JP2021138768A - Cut flower sterilization method and sterilization unit - Google Patents

Abstract

To efficiently sterilize cut flower using electrolytic water for maintaining freshness of the cut water.SOLUTION: There is provided a cut flower sterilization method of embodiments is configured so that, when supplying a vaporized material of hypochlorite water to cut flowers before transport and after being harvester, at a unit time HClO arrival amount of greater than 350 μg/(m2 minute) and equal to or smaller than 700 μg/(m2 minute), a condition of preservation for one day is set so that, a HClO total arrival amount is equal to or greater than 260 μg/m2, a condition of preservation for two days is set so that, a HClO total arrival amount is equal to or greater than 1600 μg/m2, or a condition of preservation for three days is set so that, a HClO total arrival amount is equal to or greater than 3400 μg/m2, or, a condition of preservation for four days is set so that, a HClO total arrival amount is equal to or greater than 8400 μg/m2.SELECTED DRAWING: Figure 4

Description

Embodiments of the present invention relate to a method for sterilizing cut flowers and a sterilization unit.

To maintain the freshness of cut flowers, there is a treatment method in which a preservative solution is added at the time of landing.

However, when a preservative solution is used, it is effective on leaves / stems and the like, but it does not directly sterilize the petals, so it does not have the effect of removing bacteria adhering to the petals. In this case, an invisible amount of bacteria adhering to the product at the time of shipment increases during transportation, which may cause a disease that cannot be used for ornamental purposes by the time it reaches a wholesaler or a retail store. Further, sterilization of cut flowers requires treatment not only on the upper surface of the petals but also on the back surface, and there is a problem in workability with spray spraying or the like. Acidic electrolyzed water (hypochlorous acid water) is effective in controlling diseases (for example, gray mold of roses), but there is also a problem that water remains on the surface of cut flowers after deactivation of hypochlorous acid in the immersion treatment. At present, it is not so widespread that it is used for sterilizing cut flowers in earnest.

Japanese Unexamined Patent Publication No. 2005-8542 JP-A-2017-56379 Japanese Patent Publication No. 2014-518844 International Publication No. 2015/071995

An embodiment of the present invention aims to efficiently sterilize cut flowers after harvesting.

According to the embodiment, the vaporized substance of hypochlorous acid water is added to the cut flowers after harvesting and before transportation in an average ^{unit time of more than 350 μg / (m 2} · min) and 700 μg / (m ² · min) or less. When supplying in the amount reached by HClO
The condition of 1-day storage is that the total amount of HClO reached (unit time HClO reached in the surrounding atmosphere of the cut flower x processing time) is 260 μg / m ^2, or the condition of storage for 2 days is that the total amount of HClO reached is 1600 μg. / ^{m 2} or more and either, the conditions of storage for 3 days, or HClO total arrival quantity and 3400Myug / ^{m 2} or more, or the conditions of storage 4 days, the HClO total arrival quantity and 8400Myug / ^{m 2} or more A method for sterilizing cut flowers is provided.

It is a flow chart which shows the distribution from the production to the sale of cut flowers. It is a figure which shows typically the structural example of the cut flower sterilization system applicable to embodiment. It is a schematic diagram which shows an example of the cut flower management system provided with the sterilization system applicable to embodiment. It is a flow chart which shows the cut flower processing method in the cut flower management system of FIG. It is a schematic diagram which shows another example of the cut flower management system provided with the sterilization system applicable to an embodiment. It is a flow chart which shows the cut flower processing method in the cut flower management system of FIG. It is a figure which shows an example of the electrolyzed water generation apparatus which can generate the electrolyzed water used in an embodiment. It is a graph which shows the relationship between the elapsed days and the number of lesions having a diameter of 2 mm when the cut flowers are stored in a high humidity space after the sterilization treatment. It is a graph which shows the relationship between the elapsed days and the number of lesions having a diameter of 2 mm when the cut flowers are stored in a high humidity space after the sterilization treatment. It is a graph which shows the relationship between the elapsed days and the number of lesions having a diameter of 2 mm when the cut flowers are stored in a high humidity space after the sterilization treatment. It is a graph which shows the relationship between the elapsed days and the number of lesions having a diameter of 2 mm when the cut flowers are stored in a high humidity space after the sterilization treatment. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the number of lesions having a diameter of 2 mm that occur on the petals of a cut flower on the first day of high humidity storage. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the number of lesions having a diameter of 2 mm that occurred on the petals of a cut flower on the second day of high humidity storage. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the number of lesions having a diameter of 2 mm that occurred on the petals of a cut flower on the third day of high humidity storage. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the number of lesions having a diameter of 2 mm that occurred on the petals of a cut flower on the 4th day of high humidity storage. It is a graph which shows the relationship between the elapsed days and the number of lesions having a diameter of 2 mm when the cut flowers are stored in a high humidity space after the sterilization treatment. It is a graph which shows the relationship between the elapsed days and the number of lesions having a diameter of 2 mm when the cut flowers are stored in a high humidity space after the sterilization treatment. It is a graph which shows the relationship between the elapsed days and the number of lesions having a diameter of 2 mm when the cut flowers are stored in a high humidity space after the sterilization treatment. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the lesion occurrence rate in the petal of a cut flower on the first day of high humidity storage. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the lesion occurrence rate in the petal of a cut flower on the second day of high humidity storage. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the lesion occurrence rate in the petal of a cut flower on the third day of high humidity storage. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the lesion occurrence rate in the petal of a cut flower on the 4th day of high humidity storage. It is the schematic which shows an example of the sterilization unit applicable to the method of sterilizing cut flowers according to 2nd Embodiment. It is a sterilization unit applicable to the method for sterilizing cut flowers according to the second embodiment. It is a graph which shows the relationship between the elapsed days and the number of lesions having a diameter of 2 mm when the cut flowers are stored in a high humidity space after the sterilization treatment. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the number of lesions having a diameter of 2 mm that occur on the petals of a cut flower on the first day of high humidity storage. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the number of lesions having a diameter of 2 mm that occurred on the petals of a cut flower on the second day of high humidity storage. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the number of lesions having a diameter of 2 mm that occurred on the petals of a cut flower on the third day of high humidity storage. It is a graph which shows the relationship between the total amount of HClO reaching a cut flower, and the number of lesions having a diameter of 2 mm that occurred on the petals of a cut flower on the 4th day of high humidity storage.

Hereinafter, embodiments will be described with reference to the drawings.

The embodiment includes a method for sterilizing cut flowers according to the first embodiment and a method for sterilizing cut flowers according to the second embodiment.

In the cut flower sterilization method according to the first embodiment, the vaporized substance of hypochlorous acid water is added to the cut flowers after harvesting and before transportation, and the total amount of HClO reached is 260 μg / m ² or more and 42000 μg / m ² or less. Supply up to.

The total amount of HClO reached (μg / m ² ) is the sum of the unit time of HClO reached μg / (m ² · min) and the supply time in the surrounding atmosphere of the cut flower, and is per unit area of the object (cut flower). The weight of hypochlorous acid that reaches.

The amount of HClO reached per unit time μg / (m ² · min) means the weight of HClO reached per unit area and unit time.

The timing for sterilizing cut flowers according to the first embodiment is from after harvesting to before transportation.

FIG. 1 shows a flow chart showing the distribution of cut flowers from production to sale.

As shown in the figure, in the cut flower production stage, generally, the cut flowers obtained by the producer's flower production (BL11) and harvest (BL12) are landed (BL13), and the bouquets and the like are adjusted (BL14). After packing (BL15), it is stored at a low temperature until shipment and transported (BL16).

The transported cut flowers are delivered to consumers via the market (BL17), wholesalers (BL18), retail stores, etc. (BL19). In addition, when the product is directly transported from the market to a retail store, etc., or when the producer sells it directly to a consumer, for example, through Internet sales, the market (BL17), the wholesale store (BL18), the retail store, etc. ( It may reach the consumer without going through BL19).

After harvesting and before transportation means during or before and after harvesting (BL12) at the production stage, landing (BL13) before transportation (BL16), adjusting bouquets (BL14), and packing (BL15). Corresponds to either timing. These operations may be performed not only by producers, but also by purchasers such as agricultural cooperatives and trading companies.

For example, when sterilizing a flower at the stage of landing (BL13), cut flowers in a bucket containing water only at the root are stored in the refrigerator before or at the same time as the total HClO. The vaporized substance of hypochlorous acid water can be supplied until the reached amount reaches an arbitrary value. Further, for example, when the sterilization treatment is performed at the stage of bouqueting (BL14), the hypochlorous acid water is vaporized until the total amount of HClO reached reaches an arbitrary value immediately before taking out from the refrigerator and forming the bouquet. The substance can be supplied.

In the case of domestic transportation, it takes 1 to 2 days to be delivered to consumers after shipping from the producer via transportation (BL16), market (BL17), wholesale (BL18), retail store, etc. (BL19). .. If the producer sells directly to the consumer via the Internet, it may take only one day. In addition, when transporting overseas, it takes about 3 to 4 days. In this process, if the cold chain is broken and the humidity is high enough for bacteria to grow, there is a risk of developing diseases such as Botrytis cinerea.

This Botrytis cinerea is a disease that occurs in many cut flowers such as roses, and if the number of lesions with a diameter of 2 mm exceeds 4, consumers may return the disease, and if it exceeds 10, the disease may occur. Since the number of spots increases rapidly and may affect the surrounding flowers during transportation, it is desirable to suppress the number of spots to 10 or less, preferably 4 or less, and more preferably 1 or less.

The number of lesions with a diameter of 2 mm is a numerical value obtained by the following measurement criteria for Botrytis cinerea.

Botrytis 30 × 40 mm petals five ² metrics flower total surface area (surface) times as large = 6000 mm ² to.

The surface area of a lesion with a diameter of less than 2 mm is calculated ^{as 3 mm 2.}

The surface area of a lesion with a diameter of less than 4 mm is calculated ^{as 15 mm 2.}

The surface area of a lesion with a diameter of less than 9 mm is calculated ^{as 75 mm 2.}

The diameter of the lesion is visually classified into 2, 4, and 9 mm, and the number of lesions is measured for each. If each lesion (particularly a lesion having a diameter of 2 mm) is likely to exceed 20, measure in units of 10-100. If the browning part is large, the ratio shown per petal is visually measured, and the maximum value is 5.

The lesion area is obtained from the measured value, and evaluated by converting it into a number corresponding to the number of lesions having a diameter of 2 mm (the number corresponding to lesions having a diameter of 2 mm).

According to the first embodiment, when the amount of HClO reached per unit time is 5 to 350 μg / (m ² · min), the vaporized substance of hypochlorous acid water is supplied until the ^{total amount of HClO is 260 μg / m 2 or more.} For example, even if the high humidity condition continues for one day, the number of gray mold lesions with a diameter of 2 mm can be suppressed to 4 or less, and ^{if supplied until the number reaches 3500 μg / m 2} or more, the number of lesions with a diameter of 2 mm is equivalent to 2 mm. Can be suppressed to one or less.

In addition, the vaporized substance of hypochlorous acid water is ^{supplied to the cut flowers after harvesting and before transportation until the total reaching amount of HClO reaches 4500 μg / m 2} or more and sterilized, so that the high humidity condition continues for 2 days. Even so, the number of 2 mm diameter lesions can be suppressed to 10 or less, and if 8000 μg / m ² or more is supplied, the number of 2 mm diameter lesions can be suppressed to 4 or less, and further 15,000 μg / m ² When the above is supplied, the number of lesions having a diameter of 2 mm can be suppressed to one or less. If it can be stored for 2 days, it is possible to prevent the occurrence of lesions from shipping to distribution to sales at retail stores.

In addition, when the high humidity condition continues for 3 days, if the total amount of HClO reached is 8500 μg / m ² or more, the number of lesions with a diameter of 2 mm can be suppressed to 10 or less, and if 14000 μg / m ² or more is supplied, the diameter. The number of 2 mm lesions can be suppressed to 4 or less, and when 22000 μg / m ² or more is supplied, the number of 2 mm diameter lesions can be suppressed to 1 or less.

In addition, when the high humidity condition continues for 4 days, if the total amount of HClO reached is 14000 μg / m ² or more, the number of lesions with a diameter of 2 mm can be suppressed to 10 or less, and if 19000 μg / m ² or more is supplied, the diameter. The number of 2 mm lesions can be suppressed to 4 or less, and when 23000 μg / m ² or more is supplied, the number of 2 mm diameter lesions can be suppressed to 1 or less.

According to the first embodiment, when the amount of HClO reached per unit time is ^{more than 350 μg / (m 2} · min) and 700 μg / (m ² · min) or less, hypochlorous acid is compared with respect to the cut flowers after harvesting and before transportation. By supplying the vaporized substance of chlorous acid water until the total amount of HClO is 260 μg / m ² or more, the number of spots with a diameter of 2 mm of Botrytis cinerea can be suppressed to 4 or less even if the high humidity condition continues for one day. If it is supplied until it reaches 3,500 μg / m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to one or less.

In addition, even if the high humidity condition continues for 2 days, the vaporized substance of hypochlorous acid water is ^{supplied to the cut flowers after harvesting and before transportation until the total amount of HClO reached is 1600 μg / m 2} or more and sterilized. As a result, the number of lesions with a diameter of 2 mm can be suppressed to 10 or less, and when 2800 μg / m ² or more is supplied, the number of lesions with a diameter of 2 mm can be suppressed to 4 or less, and further 7600 μg / m ² or more. Can suppress the number of lesions having a diameter of 2 mm to one or less.

In addition, even if the high humidity condition continues for 3 days, the vaporized substance of hypochlorous acid water is ^{supplied to the cut flowers after harvesting and before transportation until the total amount of HClO reached is 3400 μg / m 2} or more and sterilized. As a result, the number of 2 mm diameter lesions can be suppressed to 10 or less, and when 6700 μg / m ² or more is supplied, the number of 2 mm diameter lesions can be suppressed to 4 or less, and further 11400 μg / m ² or more. Can suppress the number of lesions having a diameter of 2 mm to one or less.

In addition, even if the high humidity condition continues for 3 days, the vaporized substance of hypochlorous acid water is ^{supplied to the cut flowers after harvesting and before transportation until the total amount of HClO reached is 8400 μg / m 2} or more and sterilized. As a result, the number of lesions with a diameter of 2 mm can be suppressed to 10 or less, and when 10600 μg / m ² or more is supplied, the number of lesions with a diameter of 2 mm can be suppressed to 4 or less, and further, 15200 μg / m ² or more. Can suppress the number of lesions having a diameter of 2 mm to one or less.

The high humidity condition here means a humidity suitable for the onset of disease, for example, a humidity of 80 to 100%.

The number of days that the number of lesions can be suppressed in high humidity conditions can be applied to the transport period of cut flowers. According to the first embodiment, the total amount of HClO reached can be set according to the transport period of cut flowers.

On the other hand, although there is concern about deterioration of quality such as discoloration and reduction of flower scent due to excessive supply, it has been visually confirmed that there is no chlorine damage up to a ^{total reaching amount of HClO of 42000 μg / m 2.}

Vapors of the hypochlorous acid solution can be used in 5 [mu] g / ^{(m 2} · min) ～700Myug / unit time HClO arrival of ^{(m 2} · min).

When the amount of HClO reached per unit time is ^{less than 5 μg / (m 2} · min), sterilization tends to be unable to keep up with the growth of bacteria. On the other hand, at high concentrations, there is concern about chlorine damage due to oversupply, but it has been visually confirmed that there is no problem up ^{to 700 μg / (m 2 · min).}

The HClO total arrival quantity, the transporting phase makeshift 3500μg / ^{m 2} or more, may be set below 23000μg / ^{m 2.}

If the total amount of HClO reached by the vaporized substance of hypochlorous acid water ^{is less than 3500 μg / m 2} , the risk of multiple lesions tends to increase when the humidity becomes high during transportation. Even if it is supplied in excess of 23000 μg / m ² , the effect of suppressing the number of lesions having a diameter of 2 mm may not change.

By further maintaining the ambient atmosphere of the cut flowers at a humidity of 80% or more, the freshness of the cut flowers can be maintained. Further, after the treatment with the vaporized substance of the hypochlorous acid water, the ambient atmosphere of the cut flowers can be further maintained at a humidity of 80% or more.

The vaporizing substance of the hypochlorous acid water used in the embodiment is obtained by vaporizing or spraying the hypochlorous acid water, which is an aqueous solution containing hypochlorous acid, into the treatment space, and is at least an object. It is almost vaporized when it reaches the cut flower, and it is so small that it does not get wet even if it touches the cut flower, or it exists in the space with a molecular size.

As a method of vaporizing or spraying the hypochlorous acid water that can be used in the embodiment, for example, a filter is impregnated with the hypochlorous acid water and air is passed through the filter to ventilate the hypochlorous acid. A method in which water and air are brought into contact to convert hypochlorous acid water into a gas and released, a method in which a cloth containing a non-woven fabric is impregnated with hypochlorous acid water and naturally vaporized without ventilation, or Examples thereof include a method of spraying hypochlorite water or vaporizing the hypochlorous acid water mistized by an ultrasonic vibrator by evaporation due to temperature before reaching the object. The use of a filter has the advantage that even if the electrolyzed water contains chloride, it is not easily vaporized.

The total amount of HClO reached by the vaporized substance of hypochlorous acid water and the amount of HClO reached per unit time can be determined as follows.

As a method for measuring the amount of HClO sprayed into a space reaching an object, there is an APF method as an evaluation method using a fluorescent reagent APF (Aminophenyl Fluorescein) for detecting active oxygen. APF shows almost no fluorescence in a neutral aqueous solution, but when it reacts with hypochlorous acid (HClO / OCl-), it produces a strongly fluorescent compound and emits strong fluorescence near 515 nm with excitation light of 490 nm. It has been confirmed that there is a correlation between this fluorescence intensity and the amount of hypochlorous acid added.

Therefore, any container containing the APF aqueous solution is placed at a place where cut flowers are placed as a sterilization target in the HClO spray space for an arbitrary time, and the HClO reaching the container is collected. By calculating the amount of hypochlorous acid reached from the fluorescence intensity of the recovered liquid and standardizing it by the area of the container and the recovery time, the weight of hypochlorous acid reached per unit area and unit time, that is, the amount reached in HClO per unit time. μg / (m ² · min) can be obtained, and the total weight of HClO reached per unit area, that is, the total amount of HClO reached μg / m ² , can be obtained by adding the processing time to the unit time HClO reaching amount. Can be done.

According to the embodiment, since the vaporized substance of hypochlorous acid water is used, even the water-repellent cut flowers can be sterilized by supplying hypochlorous acid without wetting the surface.

For example, the following sterilization system can be applied to the method for sterilizing cut flowers according to the embodiment.

The cut flower sterilization system applicable to the embodiment includes a vaporization unit that vaporizes hypochlorous acid, and a supply unit that includes a transport unit that allows the vaporized substance of hypochlorous acid vaporized by the vaporization unit to reach the vicinity of the cut flower. The target values are the unit-time HClO arrival amount prediction unit that predicts the unit-time HClO arrival amount of hypochlorous acid that has reached the vicinity of the cut flower from the supply unit, and the total HClO arrival amount predicted by the unit-time HClO arrival amount prediction unit. It is provided with a control unit that controls the supply unit.

FIG. 2 shows a diagram schematically showing a configuration example of a cut flower sterilization system applicable to the embodiment.

As shown in the figure, the cut flower sterilization system 1 is connected to the supply unit 20, the control unit 14 that controls the supply unit 20, and the control unit 14, and the amount of hypochlorous acid that reaches the periphery of the cut flower per unit time HClO. It is provided with a unit time HClO arrival amount prediction unit 19 for predicting.

The supply unit 20 includes a tank 10, a pipe 11, a pump 12, a housing 15 having an intake port 15a and an exhaust port 15b, and a vaporizing unit 16 for vaporizing hypochlorous acid contained in the housing 15. It also has a fan 17 that allows the vaporized substance of hypochlorous acid to reach the area around the cut flowers.

The tank 10 stores hypochlorite water, which is an example of sterilizing water. The hypochlorous acid water is appropriately replenished manually through a water supply port provided in the tank 10 or by a power source such as a pump via a water supply pipe connected to the tank 10.

One end of the pipe 11 is connected to, for example, the bottom surface of the tank 10, and the other end is connected to the vaporization unit 16. The pump 12 functions as a liquid feeding device that supplies the hypochlorous acid water of the tank 10 to the vaporization unit 16, and is provided in the pipe 11. The pump 12 can adjust the flow rate of the hypochlorous acid water sent to the vaporization unit 16 by, for example, variable control of the rotation speed. The hypochlorous acid water may be fed from the tank 10 to the vaporization unit 16 by using the head pressure or the like. In this case, for example, by providing a solenoid valve having a variable opening degree in the pipe 11, the flow rate of the hypochlorous acid water sent to the vaporization unit 16 can be adjusted.

In the example of FIG. 2, the pipe 11 extends inside the housing 15 and is connected to the vaporization unit 16.

The vaporization unit 16 vaporizes the hypochlorite water supplied through the pipe 11 and releases the bactericidal component into the space. At the same time, the vaporization unit 16 also generates mist having a relatively small particle size. As a method of generating such mist and vaporizing it before reaching the object, for example, an ultrasonic method can be adopted. In this case, the vaporization unit 16 vibrates the container for storing the hypochlorous acid water supplied via the pipe 11 and the hypochlorous acid water stored in the container by ultrasonic waves, and the hypochlorous acid water is vibrated from the liquid level. It has an ultrasonic vibrator that generates a mist of chlorinated water. In addition, as a method of vaporizing hypochlorous acid water by the vaporization unit 16, a method of vaporizing (atomizing) hypochlorous acid water by discharging hypochlorous acid water from a nozzle having micropores, etc. May be adopted. However, since it is preferable to sterilize the object without getting it wet, it is desirable that the amount of mist generated is small and the particle size is small.

Alternatively, as the vaporization unit 16, for example, a water absorption filter that absorbs hypochlorite water dropped from the pipe 11 can be used. This water absorption filter may have a fine structure such as a fine honeycomb structure in order to increase the contact area with air and efficiently vaporize the hypochlorous acid water. Further, the water absorption filter is made of a material that does not easily react with hypochlorous acid water, for example, a polyolefin-based material such as polyethylene or polypropylene, or an inorganic material, or the surface is coated with these materials. There may be. By using such a water absorption filter, it is possible to prevent corrosion of the water absorption filter by hypochlorite water and deactivation of hypochlorite water. The vaporization unit 16 vaporizes the hypochlorous acid water, and at the same time, mist having a relatively small particle size may be generated.

The vaporization unit may be any of the above-mentioned equivalents, as long as it has a heat vaporization method such as a thermal method and other functions for vaporization.

The fan 17 sends the vaporized substance and mist of the hypochlorous acid water generated by the vaporizing unit 16 to the outside of the housing 15. Specifically, air is taken into the housing 15 from the intake port 15a as the fan 17 rotates, and this air is taken from the exhaust port 15b together with the vaporized substance and mist of the hypochlorous acid water generated by the vaporizing unit 16. It is discharged (sprayed). By variable control of the rotation speed of the fan 17, it is possible to adjust the amount and air volume of the vaporized substance of the hypochlorous acid water sprayed on the outside of the housing 15.

The control unit 14 includes, for example, a processor that plays a central role in controlling the first sterilizer 1, a memory that stores various setting conditions and computer programs executed by the processor, and a power supply device that generates a voltage to be supplied to each unit. ing. The control unit 14 controls the pump 12, the vaporization unit 16, the fan 17, and the like. The control unit 14 is connected to a unit time HClO arrival amount prediction unit 19 that predicts the unit time HClO arrival amount of hypochlorous acid that has reached the vicinity of the cut flower from the supply unit.

The control unit 14 can control the operation of the supply unit 20 until the total amount of HClO reached calculated by the unit time HClO arrival amount prediction unit 19 reaches the target value.

For example, the control unit 14 can control the rotation speed of the fan 17 to the extent that the surface of the cut flower is not wet.

With such a vaporized substance of hypochlorous acid water, the surface of cut flowers can be sterilized without getting wet, and even if mist with a small particle size generated at the same time is scattered, it evaporates quickly, so that the surface of cut flowers and the like can be sterilized. Do not get too wet. Therefore, in the case of materials obtained by vaporizing hypochlorous acid water, as opposed to the use for cut flowers that are unsuitable for immersion in water and the petals that cannot be sterilized with general water-based chemicals due to their water repellency. Is suitable for sterilization because the hypochlorous acid component can reach the inside of the petals. The particle size of the mist (liquid mist) that does not wet the surface of the cut flower is, for example, about 50 μm or less.

FIG. 3 shows a schematic diagram showing an example of a cut flower management system provided with a sterilization system applicable to the embodiment.

As shown in the figure, the cut flower management system 30 includes a storage unit 2 for accommodating cut flowers, a sterilization system 40 for supplying a vaporized substance of hypochlorous acid to the cut flowers housed in the storage unit 2, and a management system 30. It has a dehumidifying unit 3 for controlling the humidity of the above.

In the sterilization system 40, the unit-time HClO arrival amount prediction unit 19 further includes a storage unit 23 that stores in advance the relationship between the unit-time HClO arrival amount and the operation time of the supply unit 20, and the unit-time HClO supply amount prediction unit 19 Based on the information from the storage unit 23, the scheduled time until the total amount of HClO reached by the hypochlorous acid reaches the target value is predicted, and the control unit 14 operates the supply unit 20 until the scheduled time is reached. It has the same configuration as that of FIG. 2 except that the control unit 14 is connected to the dehumidifying unit 3.

FIG. 4 shows a flow chart showing a cut flower processing method in the cut flower management system of FIG.

As shown in the figure, in this method, first, the operation of the supply unit 20 is started, and the hypochlorous acid water supplied from the tank 10 is used for vaporization in the vaporization unit 16 to generate a vaporized substance of the hypochlorous acid water. (BL1).

The vaporized substance of hypochlorous acid water is conveyed to the outside of the housing 15 by using a fan 17 and reaches the cut flowers housed in the housing portion 2 (BL2).

Based on the information from the storage unit 23, the unit time HClO arrival amount prediction unit 19 predicts the scheduled time until the total amount of HClO arrival of hypochlorous acid reaches the target value (BL3).

Then, it is determined whether the scheduled time has passed (BL4).

When the scheduled time has elapsed, the control unit 14 stops the operation of the supply unit 20.

If the scheduled time has not elapsed, the operation of the supply unit 20 is continued.

The humidity in the management system 30 can be adjusted by operating the dehumidifier in the control unit 14 as needed.

FIG. 5 shows a schematic diagram showing another example of a cut flower management system with a sterilization system applicable to the embodiment.

In this sterilization system 50, instead of the unit-time HClO arrival amount prediction unit 19 including the storage unit 23, the total amount of hypochlorous acid HClO reached around the cut flower is connected to the unit-time HClO arrival amount prediction unit 19. It has the same configuration as that of FIG. 3 except that it further includes a measuring unit 25 for measuring.

The fluorescent reagent APF for detecting active oxygen can also be used in the measuring unit.

It is also possible that the unit time HClO arrival amount prediction unit 19 further includes the storage unit 23.

FIG. 6 shows a flow chart showing a cut flower processing method in the cut flower management system of FIG.

As shown in the figure, in this method, first, the operation of the supply unit 20 is started, and in the same manner as in FIG. 4, first, a vaporized substance of hypochlorous acid water is generated (BL1), and the hypochlorous acid water is generated. The vaporized substance is transported to reach the cut flowers contained in the accommodating portion 2 (BL2).

Subsequently, the measuring unit 25 measures the unit-time HClO reaching amount of hypochlorous acid that has reached the periphery of the cut flower (BL5).

Then, it is determined whether the total amount of HClO reached is the target value (BL6).

When the target value is reached, the control unit 14 stops the operation of the supply unit 20.

If the target value has not been reached, the control unit 14 continues the operation of the supply unit 20.

When the total amount of HClO reached is 260 μg / m ^{2 to} 42000 μg / m ² and the unit time of HClO is 700 μg / (m ² · min), the operating time of the supply unit should be 22 seconds to 60 minutes. Can be done.

When the total amount of HClO reached is 260 μg / m ^{2 to} 42000 μg / m ² and the unit time of the amount of HClO reached is 5 μg / (m ² · min), the operating time of the supply unit should be 52 minutes to 140 hours. Can be done.

The acidic electrolyzed water that can be used as the hypochlorite water in the embodiment can be produced by using the following apparatus.

FIG. 7 shows an example of an electrolyzed water generator capable of generating electrolyzed water used in the embodiment.

As shown in the figure, the electrolyzed water generator includes a so-called three-chamber type electrolytic cell (electrolytic cell) 100. The electrolytic cell 100 is formed in a flat rectangular box shape, and the inside thereof is formed of an intermediate chamber 115a and an intermediate chamber 115a by an anion exchange membrane (first diaphragm) 112 and a cation exchange membrane (second diaphragm) 114. It is divided into three chambers, an anode chamber 115b and a cathode chamber 115c located on both sides. The anode 116 is provided in the anode chamber 115b and faces the anion exchange membrane 112. A cathode 118 is provided in the cathode chamber 115c and faces the cation exchange membrane 114. The anode 116 and the cathode 118 are formed in the shape of a rectangular plate having substantially the same size, and face each other with the intermediate chamber 15a interposed therebetween.

The electrolytic water generator includes an electrolytic solution supply unit 119 that supplies an electrolytic solution, for example, saturated salt water, to the intermediate chamber 115a of the electrolytic cell 100, and a water supply unit that supplies electrolytic raw water, for example, water to the anode chamber 115b and the cathode chamber 115c. A unit 211 and a power supply 213 that applies positive and negative voltages to the anode 116 and the cathode 118, respectively, are provided.

The electrolytic solution supply unit 119 includes a salt water tank 215 that generates saturated salt water, a supply pipe 119a that guides saturated salt water from the salt water tank 215 to the lower part of the intermediate chamber 115a, and a liquid supply pump 219 provided in the supply pipe 119a. It is provided with a drain pipe 119b for sending the electrolytic solution flowing in the intermediate chamber 115a from the upper part of the intermediate chamber 115a to the salt water tank 215.

The water supply unit 211 includes a water supply source (not shown) for supplying water, a water supply pipe 211a for guiding water from the water supply source to the lower part of the anode chamber 115b and the cathode chamber 115c, and an upper portion of the anode chamber 115b for water flowing through the anode chamber 115b. A first drainage pipe 211b for discharging water from the cathode chamber 115c and a second drainage pipe 211c for discharging water flowing through the cathode chamber 115c from the upper part of the cathode chamber 115c are provided.

When the electrolyzed water generator configured as described above produces acidic water (hypochlorous acid water and hydrochloric acid) and alkaline water (sodium hydroxide), the liquid feed pump 219 is operated and the middle of the electrolytic cell 100. Saturated salt water is supplied to the chamber 115a, and water is supplied to the anode chamber 115b and the cathode chamber 115c. At the same time, positive and negative voltages are applied from the power supply 213 to the anode 116 and the cathode 118, respectively. The sodium ions ionized in the salt water flowing into the intermediate chamber 115a are attracted to the cathode 118, pass through the cation exchange membrane 114, and flow into the cathode chamber 115c. Then, in the cathode chamber 115c, water is electrolyzed at the cathode 118 to generate hydrogen gas and an aqueous sodium hydroxide solution. The generated sodium hydroxide aqueous solution and hydrogen gas flow out from the cathode chamber 115c to the first drain pipe 211b, and are separated into the sodium hydroxide aqueous solution and hydrogen gas by a gas-liquid separator (not shown). The separated sodium hydroxide aqueous solution (alkaline water) is discharged through the first drainage pipe 211b.

Further, the chloride ions ionized in the salt water in the intermediate chamber 115a are attracted to the anode 116, pass through the anion exchange membrane 112, and flow into the anode chamber 115b. Then, chlorine ions are reduced at the anode 116 to generate chlorine gas. After that, the chlorine gas reacts with water in the anode chamber 115b to produce hypochlorite water and hydrochloric acid. The acidic water (hypochlorous acid water and hydrochloric acid) thus produced flows out from the anode chamber 115b through the second drainage pipe 211c.

This electrolyzed water generator is a three-chamber type, but other types such as a two-chamber type electrolyzed water generator can be used. In the three-chamber type, chloride is hardly mixed in the acidic electrolyzed water, but in the two-chamber type, chloride is mixed. In this case, when the filter is impregnated with acidic electrolyzed water and vaporized, there is an advantage that the chloride contained in the electrolyzed water is not vaporized.

In the method for sterilizing cut flowers according to the second embodiment, the vaporized substance of hypochlorous acid water is supplied to the cut flowers, and the unit time HClO reaching amount of the surrounding atmosphere of the cut flowers is 5 to 60 μg / (m ² · min) on average. maintain.

In this method, since the sterilization treatment is performed in an ambient atmosphere where the amount of HClO reached per unit time is relatively low, in the distribution from the production to the sale of cut flowers shown in FIG. The obtained cut flowers are landed (BL13), adjusted for bouquets (BL14), and packed (BL15), and then stored at a low temperature until shipment (BL16), market (BL17), and wholesale (BL18). It can be applied at any time from the above to the retail store (BL19). Therefore, for example, even if the cold chain is broken in the process of distribution, the risk of cutting flower diseases can be reduced.

If the amount of HClO reached per unit time in the surrounding atmosphere of cut flowers ^{is less than 5 μg / (m 2} · min) on average, sterilization tends to be unable to keep up with the growth of bacteria. In addition, there is a high possibility that cut flowers will come into contact with the outside air during the distribution process from post-shipment transportation (BL16), market (BL17), wholesale (BL18) to retail stores (BL19), and the atmosphere around the cut flowers. It may be difficult to sufficiently maintain the ambient atmosphere in which the amount of HClO reached per unit time ^{exceeds 60 μg / (m 2 · min) on average.}

Range in which the unit time HClO arrival amount of the surrounding atmosphere of the cut flower is relatively large For example, when the unit time HClO arrival amount is 15 to 60 μg / (m ² · min) on average, the total HClO arrival amount (unit time HClO arrival amount × If the treatment time) is ^{maintained within 24 hours until it reaches 7,000 μg / m 2} or more, the number of gray mold lesions with a diameter of 2 mm can be suppressed to 10 or less even if the high humidity condition continues for one day. If it is maintained until it reaches 10000 μg / m ² or more, the number of lesions equivalent to 2 mm in diameter can be suppressed to 4 or less, and ^{if it is maintained until it becomes 16000 μg / m 2} or more, the number of lesions equivalent to 2 mm in diameter can be suppressed to 1 or less. can. ^{In addition, if the temperature is maintained at 20000 μg / m 2} or more within 24 hours, the number of spots with a diameter of 2 mm of Botrytis cinerea can be suppressed to 10 or less even if the high humidity condition continues for 2 days, and 22500 μg / m / m. If it is maintained until it becomes m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to 4 or less. In addition, by maintaining this ambient atmosphere until the total amount of HClO reached is 23000 μg / m ² or more, the number of lesions with a diameter of 2 mm can be suppressed to 10 or less even if the high humidity condition continues for 3 days. Is possible.

Further, in the range where the unit time HClO arrival amount of the surrounding atmosphere of the cut flower is relatively small, for example, when the unit time HClO arrival amount is 5 to 15 μg / (m ² · min) on average, the total HClO arrival amount (unit time HClO arrival amount). Amount x treatment time) is maintained at the unit time HClO reaching amount of the ambient atmosphere until ^{it reaches 7,000 μg / m 2 or more within 24 hours, and the vaporized substance of hypochlorous acid water is resupplied within 48 hours to surround the environment.} The atmosphere can be maintained at an average of 5 to 15 μg / (m ² · min) unit time HClO reach. Further, after maintaining the total amount of HClO reached to 16000 μg / m ² or more, the vaporized substance of hypochlorous acid water can be resupplied within 48 hours to maintain the same amount of HClO reached per unit time. Further, after maintaining the total amount of HClO reached to 20000 μg / m ² or more, the vaporized substance of hypochlorous acid water can be resupplied within 48 hours to maintain the same amount of HClO reached per unit time. be.

When the vaporized substance of hypochlorous acid water is re-supplied within 48 hours, the amount of HClO reached per unit time ^{can be adjusted to an average ambient atmosphere of 15 to 60 μg / (m 2} · min).

It is also possible to maintain the amount of HClO reached per unit time in ^{an ambient atmosphere of 5 to 15 μg / (m 2 · min) on average for 48 hours or more.}

According to the second embodiment, even when the unit time HClO arrival amount is smaller, the total HClO arrival amount (unit time HClO arrival amount × processing time) is averaged 5 to 60 μg / (m ^{2) within 48 hours.}・ If the surrounding atmosphere is maintained, the cut flowers can be sufficiently sterilized.

In addition, the vaporized substance of hypochlorous acid water is supplied to the cut flowers to maintain the unit-time HClO reaching amount of the surrounding atmosphere of the cut flowers at an average of 5 to 60 μg / (m ² · min), and further enhance the surrounding atmosphere of the cut flowers. Humidity can be maintained at 80% or higher. As a result, cut flowers can be sterilized and freshness can be maintained.

It is also possible to store the cut flowers at a humidity of 80% or more after the step of maintaining the unit time HClO reaching amount of the ambient atmosphere of the cut flowers at an average of 5 to 60 μg / (m ^{2 · min).} As a result, the freshness of cut flowers can be maintained.

In the cut flower sterilization method according to the second embodiment, a sterilization unit for supplying a vaporized substance of hypochlorous acid water can be used.

FIG. 23 shows a schematic view showing an example of a sterilization unit applicable to the method for sterilizing cut flowers according to the second embodiment.

As shown in the figure, the sterilization unit 60 has a main body 65 having an upper opening, a filter paper 64, a support 62 for supporting the filter paper 64, and a cap 63 provided on the support 62. A support 62 to which a filter paper 64 is attached is inserted into the opening of the main body 65 containing the chlorinated water 65. By using this sterilization unit 60, the hypochlorous acid water 65 can be naturally vaporized via the filter paper 64.

Such a sterilization unit can be arranged in a space containing cut flowers to supply a vaporized substance of hypochlorous acid water. The unit-time HClO arrival amount of the vaporized substance of hypochlorous acid water can be adjusted by moving the filter paper 64 up and down using the cap 63.

FIG. 24 shows a schematic view showing another example of a sterilization unit applicable to the method for sterilizing cut flowers according to the second embodiment.

As shown in the figure, the sterilization unit 70 is provided in the flower tub main body 71, the inner container 73 and the outer container 74 provided in the flower tub main body 71 and separated via the partition wall 72, and the inner container 73 and the outer container 73. The container 74 has water-absorbing sponges 75 and 76, respectively, and water is applied to the inner water-absorbing sponge 75 and hypochlorite water is applied to the outer water-absorbing sponge 76. The partition wall 72 is attached to the outer container 74 at a certain distance by a support member (not shown). When the cut flowers are housed in the inner container 73 using the sterilization unit 70, the vaporized substance of the naturally vaporized hypochlorous acid water can be supplied to the cut flowers from the outer container 74.

The sterilization unit of FIGS. 23 and 24 can be installed, for example, in a container used in the process of transporting cut flowers, a showcase of a retail store, or the like. Although these sterilization units utilize the natural vaporization of hypochlorous acid water, a sterilization system that vaporizes the hypochlorous acid water using a fan as shown in FIG. 2 may be used.

Hereinafter, examples will be shown and embodiments will be specifically described.

Example 1
Relationship between spontaneous onset of Botrytis cinerea and the amount of hypochlorous acid supplied The entire surface is covered with 0.3 mm thick agricultural vinyl chloride with an effective internal volume of approximately 1.3 m3 (width 1200 mm x depth 600 mm x height 1800 mm). A dehumidifier for humidity control, a vaporization generator for electrolyzed water, and a container container were placed in the covered test booth.

As hypochlorite water, acidic electrolyzed water having a pH of 6.15 and a free active chlorine (FAC) concentration of 40 mg / kg was prepared, introduced into a tank of a supply unit, and sprayed for 10 minutes.

Next, we obtained cut flowers of roses (variety Avalanche) immediately after landing from a rose producer, placed them in a test tube rack at regular intervals, placed them in a container, and sprayed hypochlorous acid water for each treatment time. It was sterilized by setting it to 0, 15, 30, and 60 minutes. The temperature inside the test booth during the spray treatment was adjusted to 15 ° C to 25 ° C, and the relative humidity was adjusted to 60 to 70%.

As a method of spraying hypochlorous acid water, a filter is impregnated with hypochlorous acid water, and air is ventilated through this filter to bring the hypochlorous acid water into contact with air to produce the hypochlorous acid water. The method of converting to gas and releasing it was used.

In the test booth at a 9cm petri dish containing the APF solution 20 ml, and HClO amount absorbed in the APF solution was measured by APF method, a unit time HClO reached amount on average 129μg / ^{(m 2} · min) there were.

After the spray treatment, a filter paper was laid on a container container in which cut rose flowers were placed, filled with water, and sealed to make the inside of the container 100% high humidity. This container was stored in a booth at a temperature of 15 ° C. to 25 ° C., and four bottles of Botrytis cinerea were investigated after 1, 2, 3, and 4 days, respectively.

The onset was investigated according to the criteria for Botrytis cinerea.

The obtained results are shown in Table 1 below.

Further, FIG. 8 shows a graph showing the relationship between the number of elapsed days created based on Table 1 and the number of lesions having a diameter of 2 mm.

In FIG. 8, graphs 101, 102, 103, and 104 represent the results of no treatment, 15-minute treatment, 30-minute treatment, and 60-minute treatment, respectively.

From Table 1 and FIG. 8, it can be confirmed that when the average amount of HClO reached per unit time is 129 μg / (m ² · min), the effect of suppressing the disease increases as the total amount of HClO reached increases. For example, when stored in a high humidity space for 2 days after sterilization treatment, the number of lesions with a diameter of 2 mm is ^{25.0 in 15 minutes treatment (total amount of HClO reached 1935 μg / m 2} ) and 30 minutes treatment (total amount of HClO reached). 4.75 pieces at 3870μg / ^{m 2),} it can be seen that suppressed to 1.5 at 60 min treatment (HClO total arrival quantity 7740μg / ^{m 2).}

Example 2
The roses obtained on a different day from Example 1 were obtained by adjusting the air volume of the supply section, the concentration of hypochlorous acid water, the vaporized area, etc., and averaging the amount of HClO reached at 250 μg / (m ^{2 · min) per unit time.} The disease caused by Botrytis cinerea was investigated in cut flowers.

The obtained results are shown in Table 2 below.

Further, FIG. 9 shows a graph showing the relationship between the number of elapsed days created based on Table 2 and the number of lesions having a diameter of 2 mm.

In FIG. 9, graphs 201, 202, 203, and 204 represent the results of no treatment, 15-minute treatment, 30-minute treatment, and 60-minute treatment, respectively. From Table 2 and FIG. 9, when the average amount of HClO reached per unit time was 250 μg / (m ² · min) and stored in a high humidity space for 2 days after sterilization, the number of lesions with a diameter of 2 mm was treated for 15 minutes (total HClO). Reached 3750 μg / m ² ) to 22.25, 30 minutes treatment (HClO total reached 7500 μg / m ² ) 6.5, 60 minutes treatment (HClO total reached 15000 μg / m ² ) to 0 I know I can do it.

Example 3
Same as Example 2 except that cut flowers of roses (variety Avalanche) immediately after landing obtained from a rose producer are used and the spraying time of hypochlorous acid water is set to 0, 1, 2, 3 hours. And sterilized.

The total amount of HClO reached in the test booth was investigated using the APF method, and the amount of HClO reached per unit time was found to be 235 μg / (m ² · min) on average. The inside of the test booth during the spray treatment was adjusted so that the temperature was 15 ° C to 25 ° C and the relative humidity was 60 to 70%, as in Example 1.

For cut rose flowers that had been sterilized, the onset of Botrytis cinerea was investigated four by four after 1, 2, 3, and 4 days had passed.

The results obtained by the sterilization treatment are shown in Table 3 below.

FIG. 10 shows a graph showing the relationship between the number of elapsed days created based on Table 3 and the number of lesions having a diameter of 2 mm.

In FIG. 10, graphs 301, 302, 303, and 304 represent the results of untreated, 1-hour, 2-hour, and 3-hour processing, respectively.

From Table 3 and FIG. 10, when the average amount of HClO reached per unit time was 235 μg / (m ² · min) and the product was stored in a high humidity space for 4 days after sterilization, the number of lesions with a diameter of 2 mm was treated for 1 hour (total HClO). It can be seen that the reaching amount of 14100 μg / m ² ) can suppress up to 0.5 pieces.

Example 4
The roses obtained on a different day from Example 3 were obtained on an ^{average of 161 μg / (m 2} · min) per unit time HClO by adjusting the air volume of the supply section, the concentration of hypochlorous acid water, the vaporized area, etc. The disease caused by Botrytis cinerea was investigated in cut flowers. The results obtained by the sterilization treatment are shown in Table 4 below.

FIG. 11 shows a graph showing the relationship between the number of elapsed days created based on Table 4 and the number of lesions having a diameter of 2 mm.

In FIG. 11, graphs 401, 402, 403, and 404 represent the results of no treatment, 15-minute treatment, 30-minute treatment, and 60-minute treatment, respectively.

From Table 4 and FIG. 11, when the average amount of HClO reached per unit time was 161 μg / (m ² · min) and the product was stored in a high humidity space for 4 days after sterilization, the number of lesions with a diameter of 2 mm was treated for 1 hour (total HClO). Reached amount 9660 μg / m ² ) 7.5 pieces, 2-hour treatment (HClO total reached amount 19320 μg / m ² ) 6.25 pieces, 3-hour treatment (HClO total reached amount 28980 μg / m ² ) suppressed to 0 pieces I know I can do it.

Comparing Examples 1 to 4, it can be seen that the total amount of HClO reached is about the same, but there are variations in the suppression of lesions. For example, lesions after storage in a high humidity space for 2 days by 30-minute treatment of Example 1 (total amount of HClO reached 3870 μg / m ² ) and 15-minute treatment of Example 2 (total amount of HClO reached 3750 μg / m ^2). The numbers are 4.75 and 22.25, respectively, and the inhibitory effect is different.

For example, lesions after storage in a high humidity space for 4 days by 60 minutes treatment of Example 2 (total amount of HClO reached 15000 μg / m ² ) and treatment of 1 hour of Example 3 (total amount of HClO reached 14100 μg / m ^2). The number is 16.0 and 0.5, respectively, and the suppressing effect is different.

This is because the number of attached bacteria is different at the time of harvesting the roses and the degree of growth of the attached bacteria is different, which causes the variation.

Therefore, in order to define the total amount of HClO reached required for controlling the disease of cut flowers, the relationship between the total amount of HClO reached and the number of lesions with a diameter of 2 mm was investigated for the results of Examples 1 to 4, and each storage day was determined. The equivalent number y of lesions having a diameter of 2 mm with respect to the total amount of HClO reached x is plotted, and the jigmoid curve equation y = d + (ad) / (1+ (x / c) b) ... (1) represented by the following equation (1). ).

FIG. 12 shows data showing the relationship between the total amount of HClO reached on the first day and the number of lesions having a diameter of 2 mm.

Here, the range of the number of lesions y in the control untreated plot is 1 <y <9.

At this time, in the formula (1), a = 4.27468, b = 1.47667, c = 1617.5583, d = −0.064598, and the correlation coefficient R2 = 0.59513.

When the number of lesions with a diameter of 2 mm estimated from the approximate formula is 4, the total amount of HClO reached is 3462 μg / m ² , when it is 1, 261 μg / m ² , and when it is 0, it is 27658 μg / m ^2.

From FIG. 12, it can be seen that if the total amount of HClO reached is 3462 μg / m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to 4 or less for one day. In order to reduce the number of lesions with a diameter of 2 mm to 0, it is 27658 μg / m ² , which is higher than the value on the second day described later. It is expected to be lower.

FIG. 13 shows data showing the relationship between the total amount of HClO reached on the second day and the number of lesions having a diameter of 2 mm.

Here, the range of the number of lesions y in the control untreated plot is 28 <y <82.

At this time, in the formula (1), a = 63.456682, b = 1.47815, c = 1572.50324, d = −1.42221, and the correlation coefficient R2 = 0.84819.

When the number of lesions with a diameter of 2 mm estimated from the approximate formula is 10, the total amount of HClO reached is 4467 μg / m ² , 4 is 7947 μg / m ² , 1 is 14171 μg / m ² , and 0 is 20536 μg / m ² . be.

From FIG. 13, it can be seen that if the total amount of HClO reached is 4467 μg / m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to 10 or less for 2 days. It can be seen that a smaller amount than the first day is sufficient to suppress the number of lesions having a diameter of 2 mm to four or one. The approximation formula was more highly correlated than day 1.

FIG. 14 shows data showing the relationship between the total amount of HClO reached on the third day and the number of lesions having a diameter of 2 mm.

Here, the range of the number of lesions y in the control untreated plot is 50 <y <115.

At this time, in the formula (1), a = 94.28938, b = 1.45731, c = 2186.3421, d = -2.41162, and the correlation coefficient R2 = 0.86647.

When the number of lesions with a diameter of 2 mm estimated from the approximate formula is 10, the total amount of HClO reached is 8139 μg / m ² , 4 is 13425 μg / m ² , 1 is 21169 μg / m ² , and 0 is 27055 μg / m ² . be.

From FIG. 14, it can be seen that if the total amount of HClO reached is 8139 μg / m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to 10 or less for 3 days. It can be seen that a smaller amount than the second day is sufficient to suppress the number of lesions having a diameter of 2 mm to four or one. Cut flowers with a high risk of occurrence exceeding 115 lesions with a diameter of 2 mm without treatment are out of the range of the approximate expression.

FIG. 15 shows data showing the relationship between the total amount of HClO reached on the 4th day and the number of lesions having a diameter of 2 mm.

Here, the range of the number of lesions y in the control untreated plot is 93 <y <313.

At this time, in the formula (1), a = 245.01217, b = 1.39773, c = 2082.32045, d = −7.66145, and the correlation coefficient R2 = 0.81374.

When the number of lesions with a diameter of 2 mm estimated from the approximate formula is 10, the total amount of HClO reached is 13355 μg / m ² , when it is 4, 18321 μg / m ² , when it is 1, 22884 μg / m ² , and when it is 0, it is 25065 μg / m ² . be.

From FIG. 15, it can be seen that if the total amount of HClO reached is 13355 μg / m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to 10 or less for 4 days. It can be seen that a smaller amount than the third day is sufficient to suppress the number of lesions having a diameter of 2 mm to four or one. Cut flowers with a high risk of occurrence exceeding 313 lesions with a diameter of 2 mm without treatment are out of the range of the approximate expression.

Table 5 below summarizes the number of days elapsed, the number of lesions with a diameter of 2 mm estimated from the approximate formula, and the total amount of HClO reached.

Therefore, when the amount of HClO reached per unit time is 5 to 350 μg / (m ² · min), the total amount of HClO reached to suppress the number of lesions with a diameter of 2 mm to 10 or less is within one day under high humidity conditions. If 260μg / ^{m 2} or more, if it is within 2 days 4500μg / ^{m 2} or more, if it is within three days 8500μg / ^{m 2} or more, if it is within 4 days defined as 14000μg / ^{m 2} or more.

When the unit time HClO arrival amount is 5 to 350 μg / (m ² · min), the total HClO arrival amount to suppress the number of lesions with a diameter of 2 mm to 4 or less is when the high humidity condition is within 1 day. 260μg / ^{m 2} or more, if it is within 2 days 8000μg / ^{m 2} or more, if it is within three days 14000μg / ^{m 2} or more, if it is within 4 days defined as 19000μg / ^{m 2} or more.

When the unit time HClO arrival amount is 5 to 350 μg / (m ² · min), the total HClO arrival amount to suppress the number of lesions with a diameter of 2 mm to 1 or less is when the high humidity condition is within 1 day. 3500μg / ^{m 2} or more, if it is within 2 days 15000μg / ^{m 2} or more, if it is within three days 22000μg / ^{m 2} or more, if within 4 days defined as 23000μg / ^{m 2} or more.

Example 5
As hypochlorous acid water, use acidic electrolyzed water having a pH of 6.12 and a free active chlorine (FAC) concentration of 80 mg / kg instead of acidic electrolyzed water having a pH of 6.15 and a free active chlorine (FAC) concentration of 40 mg / kg. , The average amount of HClO reached per unit time is 679 μg / (m ² · min), and the survey is carried out after 1, 2, 3, 4, 5, and 6 days, which is different from Example 1. The disease caused by the gray mold fungus was investigated in the same manner as in Example 1 except that the cut rose flowers obtained on the same day were used.

The results obtained are shown in Table 6 below.

Further, FIG. 16 shows a graph showing the relationship between the number of elapsed days created based on Table 6 and the number of lesions having a diameter of 2 mm.

In FIG. 16, graphs 501, 502, 503, and 504 represent the results of no treatment, 15-minute treatment, 30-minute treatment, and 60-minute treatment, respectively.

In the figure, the graphs other than the graph 501 are almost overlapped and difficult to distinguish. For example, on the 6th day after the high humidity treatment, the graphs 502, 503, and 504 are in descending order of the number of 2 mm lesions.

From Table 6 and FIG. 16, in the unit time HClO reaching average 679 μg / (m ² · min), the minimum time is 15 minutes treatment (HClO total reaching 10185 μg / m ² ), and it is stored in a high humidity space after sterilization treatment. In this case, it can be seen that the number of lesions having a diameter of 2 mm can be suppressed to 0 until the 3rd day and up to 0.25 when stored for 4 days.

Example 6
By Botrytis cinerea in the same manner as in Example 5, except that cut flowers obtained on a different day from Example 5 are used and that the average amount of HClO reached per unit time is 505 μg / (m ^{2 · min).} The onset of each disease was investigated.

The results obtained are shown in Table 7 below.

Further, FIG. 17 shows a graph showing the relationship between the number of elapsed days created based on Table 7 and the number of lesions having a diameter of 2 mm.

In FIG. 17, graphs 601, 602, 603, and 604 represent the results of no treatment, 15-minute treatment, 30-minute treatment, and 60-minute treatment, respectively.

In the figure, the graphs other than the graphs 601 and 602 are almost overlapped and difficult to distinguish. For example, on the 6th day after the high humidity treatment, the graphs 603 and 604 are in descending order of the number of 2 mm lesions.

From Table 7 and FIG. 17, when the average amount of HClO reached per unit time was 505 μg / (m ² · min) and stored in a high humidity space after sterilization, the number of lesions with a diameter of 2 mm was treated for 15 minutes (total amount of HClO reached). It can be seen that 7575 μg / m ² ) is 0.25 pieces after storage for 2 days, which is less than 1 piece, and 30 minutes treatment (total amount of HClO reached 15150 g / m ² ) can suppress up to 1 piece after storage for 4 days.

Example 7
Using cut flowers obtained on a different day from Example 5, the average arrival of HClO per unit time was 379 μg / (m ² · min), and the survey was conducted 1, 2, 3, and 4. The onset of Botrytis cinerea was investigated in the same manner as in Example 5 except after the lapse of days.

The obtained results are shown in Table 8 below.

Further, FIG. 18 shows a graph showing the relationship between the number of elapsed days created based on Table 8 and the number of lesions having a diameter of 2 mm.

In FIG. 18, graphs 701, 702, 703, and 704 represent the results of no treatment, 15-minute treatment, 30-minute treatment, and 60-minute treatment, respectively.

In the figure, the graphs other than the graphs 701 and 702 are almost overlapped and difficult to distinguish. For example, on the 4th day after the high humidity treatment, the graphs 703 and 704 are in descending order of the number of 2 mm lesions.

From Table 8 and FIG. 18, when the average amount of HClO reached per unit time was 379 μg / (m ² · min) and the mixture was stored in a high humidity space after sterilization, the number of lesions with a diameter of 2 mm was treated for 30 minutes (total amount of HClO reached). It can be seen that 11370 g / m ² ) can suppress the number to 0.25 and 1 or less after storage for 3 days.

From the results of Examples 5, 6 and 7, when the amount of HClO reached per unit time is ^{larger than 350 μg / (m 2} · min), the total amount of HClO reached to suppress the number of lesions with a diameter of 2 mm to 1 or less is determined. It can be seen that if the transportation period is 2 days or less, it is 7600 μg / m ² or more, if it is 3 days or less, it is 11400 μg / m ² or more, and if it is 4 days or less, it is 15200 μg / m ² or more.

Comparing the results of Examples 5 and 6 and 7 with the results of Examples 1 to 4, when the amount of HClO reached per unit time is ^{larger than 350 μg / (m 2} · min), the number of lesions having a diameter of 2 mm is one or less. It can be seen that the total amount of HClO reached to be suppressed to is about half that of the unit time of 5 to 350 μg / (m ^{2 · min) as long as the transportation period is within 3 days.}

On the other hand, since the concentrations of Examples 5, 6 and 7 are high, the total amount of HClO reached is 5685 μg / m ² at the minimum value, so that the number of lesions having a diameter of 2 mm is suppressed to 4 or less and 10 or less. The total amount of HClO reached for this was calculated from the sigmoid curve formula based on the experimental values.

In obtaining the sigmoid curve equations of Examples 5, 6 and 7, the vertical axis y was defined as the generation rate. This is because the number of untreated lesions in Examples 5, 6 and 7 is smaller than that in Examples 1 to 4, and thus correlates with the low concentration (Examples 1 to 4) so far.

The reason why the number of untreated lesions is small is that this verification uses bacteria that naturally occur in cut flowers, and therefore varies due to seasonal fluctuations and individual differences.

The incidence rate is defined by dividing the number of lesions after treatment by the average value of the number of untreated lesions so that it is not affected by the difference in the number of untreated lesions. The meaning of is the rate at which the occurrence of lesions could be suppressed, but here the results of deriving the sigmoid curve formula using the rate of occurrence for each storage day are shown below.

FIG. 19 shows data showing the relationship between the total amount of HClO reached on the first day and the incidence of lesions.

Here, the number of lesions having a diameter of 2 mm in the control untreated plot is greater than 0 and less than 9, and the average number of untreated lesions is 3.7.

At this time, in the formula (1), a = 1.00000, b = 264.32430, c = 6533.86133, d = 0.00000, and the correlation coefficient R2 = 1.00000.

FIG. 20 shows data showing the relationship between the total amount of HClO reached on the second day and the incidence of lesions.

Here, the equivalent number of 2 mm diameter lesions in the control untreated plot is greater than 9 and less than 83, and the average number of untreated lesions is 45.

At this time, in the formula (1), a = 1.00000, b = 1.87196, c = 810.61309, d = −0.00071607, and the correlation coefficient R2 = 0.99997.

FIG. 21 shows data showing the relationship between the total amount of HClO reached on the third day and the incidence of lesions.

Here, the equivalent number of 2 mm diameter lesions in the control untreated plot is greater than 35 and less than 159, and the average number of untreated lesions is 86.

At this time, in the formula (1), a = 1, b = 1.28774, c = 751.81239, d = −0.010432, and the correlation coefficient R2 = 0.99823.

FIG. 22 shows data showing the relationship between the total amount of HClO reached on the 4th day and the incidence of lesions.

Here, the equivalent number of 2 mm diameter lesions in the control untreated plot is greater than 93 and less than 342, and the average number of untreated lesions is 226.

At this time, in the formula (1), a = 0.99999, b = 4.177779, c = 4033.58727, d = 0.00018378, and the correlation coefficient R2 = 0.99965.

Next, from the sigmoid curve formula, the total amount of HClO reached is calculated to suppress the number of lesions having a diameter of 2 mm to 10, 4, or 1 or less. As a procedure, the number of lesions having a diameter of 2 mm, which is equivalent to 10, 4, and 1, is divided by the average value of the number of lesions without treatment to calculate the occurrence rate y of each. Further, by substituting y into the sigmoid curve equation, it is possible to derive the total amount of HClO reached x required to suppress the number of lesions having a diameter of 2 mm to 10, 4, or 1 or less.

Taking 4-day storage as an example, the average number of untreated lesions is 226, so the incidence y is 0.044 for 10 pieces, 0.018 for 4 pieces, and 0.004 for 1 piece. ^{Substituting this y into the sigmoid curve equation, the total amount of HClO reached is 8423 μg / m 2} , which is required to reduce the number of lesions with a diameter of 2 mm to 10 or less after storage for 4 days. The amount can be derived as 10574 μg / m ² , and the total amount of HClO reached to be 1 or less is 14896 μg / m ² .

Similarly, the total amount of HClO reached to reduce the number of 2 mm diameter lesions to 10 or less after storage for 3 days is 3397 μg / m ² , and the total amount of HClO to reach to 4 or less is 6707 μg / m ^2. The total amount of HClO reached to be one or less can be derived as ^{14403 μg / m 2.}

^{The total amount of HClO reached is 1580 μg / m 2} , which is required to reduce the number of lesions with a diameter of 2 mm to 10 or less after storage for 2 days, and the total amount of HClO reached is 2798 μg / m ² , 1 or less. The total amount of HClO reached can be derived as ^{6017 μg / m 2.}

The total amount of HClO reached can be derived to ^{6558 μg / m 2 in order} to reduce the number of lesions having a diameter of 2 mm to one or less by storage for one day. In 1-day storage, suppression of 4 or more lesions cannot be calculated because the average number of untreated lesions exceeds 3.7.

Table 9 below shows the number of days elapsed and the diameter when the measured values of Examples 5, 6 and 7 and the ^{high concentration of the unit time HClO reached over 350 μg / (m 2 · min) determined from the sigmoid curve formula.} The total amount of HClO reached to reduce the number of 2 mm lesions to 10 or less, 4 or less, and 1 or less is shown collectively.

In the table, the total amount of HClO reached 7600 μg / m 2 required to reduce the number of lesions having a diameter of 2 mm to 1 or less on the ^{second day} was estimated from the total amount of HClO reached 7575 μg / m ^{2 in Table 7. Further, the total amount of HClO reached 11400 μg / m 2} required for the number of lesions having a diameter of 2 mm on the third day to be one or less can be estimated from the ^{total amount of HClO reached 11370 μg / m 2 in} Table 8, and the total amount of HClO reached 11370 μg / m 2 on the fourth day. ^{The total amount of HClO reached 15200 μg / m 2} required for the number of spots corresponding to one or less can be estimated from the total amount of HClO reached 15150 μg / m ^{2 in Table 7.}

In addition, the total amount of HClO reached to reduce the number of lesions having a diameter of 2 mm to 10 or less on the 2nd, 3rd, and 4th days can be estimated from the sigmoid curve formula.

The total amount of HClO reached to reduce the number of lesions with a diameter of 2 mm to 1 or less on the first day is calculated from the sigmoid curve formula when the amount of HClO reached per unit time is 350 μg / (m ² · min) or less. The total amount of HClO reached to reduce the number of 2 mm diameter lesions to 4 or 1 or less on the first day is quoted from Table 5 because the concentration is larger than that of Table 5.

Therefore, when the amount of HClO reached per unit time exceeds 350 μg / (m ² · min), the total amount of HClO reached to suppress the number of lesions with a diameter of 2 mm to 10 or less is within 2 days under high humidity conditions. If 1600μg / ^{m 2} or more, if it is within three days 3400μg / ^{m 2} or more, if it is within 4 days defined as 8400μg / ^{m 2} or more.

When the amount of HClO reached per unit time exceeds 350 μg / (m ² · min), the total amount of HClO reached to suppress the number of lesions with a diameter of 2 mm to 4 or less is when the high humidity condition is within 1 day. 260 μg / m ² or more and 2 days or less is defined as 2800 μg / m ² or more and 3 days or less is 6700 g / m ² or more and 4 days or less is 10600 μg / m ² or more.

When the amount of HClO reached per unit time exceeds 350 μg / (m ² · min), the total amount of HClO reached to suppress the number of lesions with a diameter of 2 mm to 1 or less is when the high humidity condition is within 1 day. 3500μg / ^{m 2} or more, if it is within 2 days 7600μg / ^{m 2} or more, if it is within three days 11400μg / ^{m 2} or more, if within 4 days defined as 15200μg / ^{m 2} or more.

Example 8
Spread filter paper 30 cm long and 20 cm wide in a plastic container measuring 420 mm long, 330 mm wide, and 140 mm high, and add 500 ml of hypochlorite water with a free effective chlorine (FAC) concentration of 73 mg / kg. I put it in.

Cut flowers of roses (variety Avalanche) immediately after landing were obtained from rose producers, inserted into test tube racks at regular intervals, and placed in containers. A transparent lid having a length of 405 mm, a width of 315 mm, and a height of 105 mm was put on the lid, and a hygrometer was inserted between the container and the lid.

The container was stored for 24 hours in an environment with an ambient temperature of 15 ° C. to 25 ° C., and cut flowers were sterilized by natural vaporization of hypochlorous acid water.

The humidity inside the container was almost 100%, and the amount of HClO reached per unit time was 38 μg / (minute · m ² ) on average.

After 24 hours, filter paper was laid in a plastic container of the same size, filled with water, and a test tube rack with sterilized cut flowers was transferred to this container, sealed and the inside of the container was almost 100% high. Maintained in humidity. The container was stored in an environment with an ambient temperature of 15 ° C. to 25 ° C. for another 3 days. Four days each, 1, 2, 3, and 4 days after the start of the sterilization treatment, the disease caused by Botrytis cinerea was investigated.

The obtained results are shown in Table 10 below.

For comparison, except that 500 ml of water was added instead of 500 ml of hypochlorite water, the mixture was stored for 24 hours in the same manner, and then stored at high humidity for 3 days for 1, 2, 3, and 4 days from the start of storage. After the lapse of time, four cases of Botrytis cinerea were investigated.

The obtained results are shown in Table 10 below.

Example 9
A sterilization unit having the same configuration as that of FIG. 23 was prepared, and 400 ml of hypochlorite water having a free effective chlorine (FAC) concentration of 70 mg / kg was added.

Cut flowers were sterilized for 24 hours in the same manner as in Example 8 except that the sterilization unit was placed in a plastic container instead of the filter paper and electrolyzed water.

The humidity inside the container was almost 100%, and the amount of HClO reached per unit time was 13.4 μg / (minute · m ² ) on average.

Then, similarly, it was stored in high humidity for 3 days, and after 1, 2, 3, and 4 days had passed from the start of the sterilization treatment, four each of the diseases caused by Botrytis cinerea were investigated.

The obtained results are shown in Table 10 below.

The cut flowers were sterilized in the same manner as in Example 9 except that the cut flowers were sterilized for 96 hours, and 1, 2, 3, and 4 days after the start of the sterilization treatment, the disease caused by Botrytis cinerea was observed. We investigated four by four.

The obtained results are shown in Table 10 below.

FIG. 25 is a graph showing the relationship between the number of elapsed days created based on Table 10 and the number of lesions having a diameter of 2 mm.

In FIG. 25, graphs 1201, 1202, 1203, and 1204 are treated with water for 24 hours (comparison), treated with a sterilization unit for 24 hours in a container in which acidic electrolyzed water is naturally vaporized (Example 9), and sterilized. The results of 96 hours treatment (Example 10) in a container in which acidic electrolyzed water is naturally vaporized by the unit and 24 hours treatment (Example 8) in a container in which acidic electrolyzed water is impregnated with filter paper and naturally vaporized are shown. ..

From Table 10 and FIG. 25, when the average amount of HClO reached per unit time was 38 μg / (m ² · min) and the product was stored in a high humidity space after 24 hours of sterilization treatment, the number of lesions with a diameter of 2 mm 3 days after the sterilization treatment was 5. When stored in a high-humidity space after sterilization for 24 hours with an average amount of HClO reached 14.1 μg / (m ² · min) per unit time, the number of lesions with a diameter of 2 mm 2 days after sterilization is 15 per unit. It can be seen that the number of lesions having a diameter of 2 mm can be suppressed to 32 when the sterilization treatment is carried out for 96 hours at an average time of 14.1 μg / (m ^{2 · min).}

Further, as shown in FIG. 25, when the filter paper is impregnated with acidic electrolyzed water and treated in a naturally vaporized container for 24 hours, a sufficient sterilizing effect can be seen even after 4 days, but the acidic electrolyzed water is used in the sterilization unit. The bactericidal effect is inferior when the water is treated in a naturally vaporized container for 24 hours. However, by treating the acidic electrolyzed water in the naturally vaporized container with the sterilization unit for 96 hours, the same effect as when the acid electrolyzed water is impregnated in the filter paper and treated in the naturally vaporized container for 24 hours is obtained. I understand.

In order to define the total amount of HClO reached required for disease control of cut flowers, the relationship between the total amount of HClO reached and the number of lesions with a diameter of 2 mm was investigated for the results of Examples 8 to 10, and the total amount of HClO reached was examined for each storage day. A number y corresponding to a lesion having a diameter of 2 mm with respect to the reached amount x was plotted and approximated by the jigmoid curve equation represented by the above equation (1).

FIG. 26 shows data showing the relationship between the total amount of HClO reached on the first day and the number of lesions having a diameter of 2 mm.

Here, the range of the number of lesions y in the control untreated plot is 10 <y <34.

At this time, in the formula (1), a = 0.23833, b = -4.06963, c = 7106.00793, d = 20.41667, and the correlation coefficient R2 = 0.75110.

When the number of lesions with a diameter of 2 mm estimated from the approximate formula is 10, the total reach of HClO is 7220 μg / m ² , 4, when the total reach of HClO is 10206 μg / m ² , and when 1, the ^{total reach of HClO is 15748 μg / m 2} . ..

From FIG. 26, it can be seen that if the total amount of HClO reached is 7220 μg / m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to 10 or less for one day.

FIG. 27 shows data showing the relationship between the total amount of HClO reached on the second day and the number of lesions having a diameter of 2 mm.

Here, the range of the number of lesions y in the control untreated plot is 35 <y <68.

At this time, in the formula (1), a = 46.08246, b = 14.13147, c = 18157.4624, d = 2.07899, and the correlation coefficient R2 = 0.84233.

When the number of lesions with a diameter of 2 mm estimated from the approximate formula is 10, the total amount of HClO reached is 20214 μg / m ² , and when it is 4, it is 22590 μg / m ^2.

From FIG. 27, it can be seen that if the total amount of HClO reached is 20214 μg / m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to 10 or less for 2 days.

FIG. 28 shows data showing the relationship between the total amount of HClO reached on the third day and the number of lesions having a diameter of 2 mm.

Here, the range of the number of lesions y in the control untreated plot is 58 <y <155.

At this time, in the formula (1), a = 99.02931, b = 26.72381, c = 200020.0089, d = 7.60246, and the correlation coefficient R2 = 0.73408.

When the number of lesions with a diameter of 2 mm estimated from the approximate formula is 10, the total amount of HClO reached is 22930 μg / m ² .

From FIG. 28, it can be seen that if the total amount of HClO reached is 22930 μg / m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to 10 or less for 3 days.

FIG. 29 shows data showing the relationship between the total amount of HClO reached on the 4th day and the number of lesions having a diameter of 2 mm.

Here, the range of the number of lesions y in the control untreated plot is 189 <y <235.

At this time, in the formula (1), a = 201.50817, b = 11.30435, c = 20674.7571, d = 21.81753, and the correlation coefficient R2 = 0.87720.

When the number of lesions with a diameter of 2 mm estimated from the approximate formula is 22, the total amount of HClO reached is 38036 μg / m ² .

From FIG. 29, it can be seen that if the total amount of HClO reached is 38036 μg / m ² or more, the number of lesions having a diameter of 2 mm can be suppressed to 22 or less for 4 days.

Table 11 below summarizes the number of days elapsed, the number of lesions with a diameter of 2 mm estimated from the approximate formula, and the total amount of HClO reached.

As shown in Table 11, when the amount of HClO reached per unit time is 5 to 60 μg / (m ² · min), the total amount of HClO reached to suppress the number of lesions with a diameter of 2 mm to 10 or less is high humidity. If it is within 1 day, it shall be 7,000 μg / m ² or more, if it is within 2 days, it shall be 20000 μg / m ² or more, and if it is within 3 days, it shall be 23000 μg / m ² or more.

When the amount of HClO reached per unit time is 5 to 60 μg / (m ² · min), the total amount of HClO reached to suppress the number of lesions with a diameter of 2 mm to 4 or less is when the high humidity condition is within one day. 10000μg / ^{m 2} or more, the case is within two days and 22500μg / ^{m 2} or more.

When the amount of HClO reached per unit time is 5 to 60 μg / (m ² · min), the total amount of HClO reached to suppress the number of lesions with a diameter of 2 mm to 1 or less is when the high humidity condition is within 1 day. It shall be 1600 μg / m ^{2 or more.}

Hereinafter, the inventions described in the claims of the prior application Japanese Patent Application No. 2017-183373 of the present application will be added.
[Appendix 1]
[1]
It is characterized in that the vaporized substance of hypochlorous acid water is supplied to cut flowers after harvesting and before transportation until the total amount of HClO reached (unit time HClO reached x processing time) reaches 260 μg / m ^{2 or more.} Cut flower sterilization method.
[2]
The method according to [1], wherein the total amount of HClO reached is 42000 μg / m ^{2 or less.}
[3]
The method according to [1] or [2], wherein the amount of HClO reached per unit time is 5 to 700 μg / (m ^{2 · min).}
[4]
The total reached amount of HClO is set according to the reached amount of HClO per unit time and the transportation period, and when the reached amount of HClO per unit time is 5 to 350 μg / (m ² · min), the transportation period is within one day. If it is 260 μg / m ² or more, if it is within 2 days, it is 4500 μg / m ² or more, if it is within 3 days, it is 8500 μg / m ² or more, and if it is within 4 days, it is 14000 μg / m ² or more. The method according to [3].
[5]
The HClO total arrival quantity, the case transport period is within 1 day 260μg / ^{m 2} or more, if it is within 2 days 8000μg / ^{m 2} or more, if it is within three days 14000μg / ^{m 2} or more, The method according to [4], which is set to 19000 μg / m2 or more when it is within 4 days.
[6]
The HClO total arrival quantity, the case transport period is within 1 day 3500μg / ^{m 2} or more, if it is within 2 days 15000μg / ^{m 2} or more, if it is within three days 22000μg / ^{m 2} or more 4. The method according to [5], which is set to ^{23000 μg / m 2} or more when it is within 4 days.
[7]
The total amount of HClO reached is set according to the amount of HClO reached per unit time and the transportation period, and when the amount of HClO reached per unit time is ^{greater than 350 μg / (m 2} · min), the transportation period is within one day. If 260μg / ^{m 2} or more, if it is within 2 days 1600μg / ^{m 2} or more, if it is within three days 3400μg / ^{m 2} or more, if it is within 4 days at 8400μg / ^{m 2} or more [3 ] The method described in.
[8]
The total amount of HClO reached is set according to the amount of HClO reached per unit time and the transportation period, and when the amount of HClO reached per unit time is ^{greater than 350 μg / (m 2} · min), the transportation period is within one day. If 260μg / ^{m 2} or more, if it is within 2 days 2800μg / ^{m 2} or more, if it is within three days 6700μg / ^{m 2} or more, if it is within 4 days at 10600μg / ^{m 2} or more [7 ] The method described in.
[9]
The total amount of HClO reached is set according to the amount of HClO reached per unit time and the transportation period, and when the amount of HClO reached per unit time is ^{greater than 350 μg / (m 2} · min), the transportation period is within one day. If 3500μg / ^{m 2} or more, if it is within 2 days 7600μg / ^{m 2} or more, if it is within three days 11400μg / ^{m 2} or more, if it is within 4 days at 15200μg / ^{m 2} or more [8 ] The method described in.
In addition, the inventions described in the scope of the initial claims of the application of the present application will be added below.
[Appendix 2]
[2-1]
For cut flowers after harvesting and before transportation, the total amount of HClO reached (unit time HClO reached in the surrounding atmosphere of the cut flower x processing time) is 260 μg / m ² or more and 42000 μg / m. ^A method for sterilizing cut flowers, which comprises supplying up to 2 or less.
[2-2]
The amount of HClO reached per unit time is 5 to 700 μg / (m ² · min) [2-1].
The method described in.
[2-3]
The HClO total arrival quantity, transporting phase makeshift 3500μg / ^{m 2} or more, A method according to set below 23000μg / ^{m 2} [2-2].
[2-4]
A method for sterilizing cut flowers by supplying a vaporized substance of hypochlorous acid water to the cut flowers and maintaining the amount of HClO reached per unit time in the surrounding atmosphere of the cut flowers at an average of 5 to 60 μg / (m ^{2 · min).}
[2-5]
HClO total arrival quantity (unit time HClO reach weight × processing time in the ambient atmosphere around the cut flowers) for 24 hours within 7000μg / ^{m 2} or more, until the following 23000μg / ^{m 2,} the surrounding atmosphere unit time HClO reached amount [2-4], further comprising resupplying the vaporized substance of the hypochlorous acid water to the cut flowers and maintaining the ambient atmosphere at the amount of HClO reached in the unit time within 48 hours. the method of.
[2-6]
The method according to any one of [2-1] to [2-4], wherein the ambient atmosphere of the cut flower is further maintained at a humidity of 80% or more.
[2-7]
The method according to any one of [2-1] to [2-4], further comprising storing the cut flowers at a humidity of 80% or more after maintaining the amount of HClO reached per unit time.
[2-8]
A sterilization unit for supplying a vaporized substance of hypochlorous acid water used in the method according to any one of [2-4] to [2-7].

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Cut flower sterilization system, 2 ... Storage unit, 3 ... Dehumidifying unit, 10 ... Tank, 11 ... Piping, 12 ... Pump, 13 ..., 14 ... Control unit, 15 ... Housing, 16 ... Vaporizing unit, 17 ... Fan, 19 ... HClO total arrival amount prediction unit, 20 ... supply unit, 23 ... storage unit, 30 ... management system, 40 ... sterilization system, 60, 70 ... sterilization unit, 100 ... electrolytic cell, 112 ... first diaphragm, 114 ... first 2 diaphragm, 115a ... intermediate chamber, 115b ... anode chamber, 115c ... cathode chamber, 119a ... supply pipe, 211 ... water supply unit, 211a ... water supply pipe, 211c ... drainage pipe, 213 ... power supply, 215 ... salt water tank

Claims (15)

The vaporized substance of hypochlorous acid water is supplied to the cut flowers after harvesting and before transportation at a unit time HClO reaching amount of 700 μg / (m ^{2 · min) or less, which is larger than 350 μg / (m 2 · min) on average.} When
The condition of 1-day storage is that the total amount of HClO reached (unit time HClO reached in the surrounding atmosphere of the cut flower x processing time) is 260 μg / m ^2, or the condition of storage for 2 days is that the total amount of HClO reached is 1600 μg. / ^{m 2} or more and either, the conditions of storage for 3 days, or HClO total arrival quantity and 3400Myug / ^{m 2} or more, or the conditions of storage 4 days, the HClO total arrival quantity and 8400Myug / ^{m 2} or more A method for sterilizing cut flowers. The method according to claim 1, wherein the condition of storage for one day is that the total amount of HClO reached is 3500 μg / m ^{2 or more.} The method according to claim 1 or 2, wherein the two-day storage condition is such that the total amount of HClO reached is 2800 μg / m ^{2 or more.} The method according to claim 3, wherein the two-day storage condition is such that the total amount of HClO reached is 7600 μg / m ^{2 or more.} The method according to any one of claims 1 to 4, wherein the condition of storage for 3 days is such that the total amount of HClO reached is 6700 μg / m ^{2 or more.} The method according to claim 5, wherein the condition of storage for 3 days is a total reaching amount of HClO of 11400 g / m ^{2 or more.} The method according to any one of claims 1 to 6, wherein the condition of storage for 4 days is such that the total amount of HClO reached is 10600 μg / m ^{2 or more.} The method according to claim 7, wherein the condition of storage for 4 days is a total reaching amount of HClO of 15200 g / m ^{2 or more.} The method according to any one of claims 1 to 8, wherein the amount of HClO reached per unit time is 379 μg / (m ^{2 · min) or more on average.} The method according to claim 9, wherein the amount of HClO reached per unit time is 505 μg / (m ^{2 · min) or more on average.} The method according to claim 10, wherein the amount of HClO reached per unit time is 679 μg / (m ^{2 · min) or more on average.} The method according to any one of claims 1 to 11, wherein the total amount of HClO reached is 42000 μg / m ^{2 or less.} The method according to claim 12, wherein the total amount of HClO reached is 23000 μg / m ^{2 or less.} The method according to any one of claims 1 to 13, further maintaining the ambient atmosphere of the cut flower at a humidity of 80% or more. The method according to any one of claims 1 to 14, further comprising storing the cut flowers at a humidity of 80% or more after maintaining the amount of HClO reached per unit time.

Images