JP2023110611A - Basil package, and basil preservation method - Google Patents

Abstract

To disclose a basil package capable of maintaining quality of basil for a long period of time, and to disclose a basil preservation method.SOLUTION: A basil package comprising basil and a packaging material according to one or more embodiments of the present invention is characterized in that the packaging material has a moisture permeability of 3 to 25 g/(m2 24 hr)(40°C, relative humidity of 90%), and the packaging material stores the basil together with gas filling an inside of the packaging material and is sealed. A basil preservation method according to one or more other embodiments of the present invention is characterized in that the basil is stored in the packaging material having the moisture permeability in the above-mentioned range, the gas is filled inside the packaging material followed by sealing to prepare the basil package, and the basil package is preserved at 10 to 20°C.SELECTED DRAWING: Figure 1

Description

The present specification discloses a basil package suitable for long-term storage and a method for preserving basil.

2. Description of the Related Art A plant cultivating apparatus for cultivating plants by artificially controlling conditions necessary for cultivating plants, such as light and temperature, is known. A large-scale plant cultivation apparatus is also called a plant factory.

Basil is an edible plant suitable for production in a plant factory. Basil produced in a plant factory or field is distributed as a basil package packed with a wrapping material.

Conventional basil packages include those in which basil is packaged with a packaging material such as a resin tray. Conventional basil packages are stored at room temperature (around 25 ° C), low temperature (10 to 20 ° C) or refrigerated (4 to 10 ° C), but the quality of basil is maintained in any temperature range after harvesting. It is up to about one week, and there was a problem that the quality tends to deteriorate.

Therefore, the present specification discloses a basil package capable of maintaining the quality of basil for a longer period of time than conventional basil packages, and a method for preserving basil.

This specification discloses the following method as means for solving the above problems.
(1) A basil package containing basil and a packaging material,
The moisture permeability of the packaging material is 3 to 25 g/(m ² · 24 hr) (40 ° C., relative humidity 90%),
A basil package, wherein the packaging material accommodates the basil together with a gas filling the inside of the packaging material and is sealed.
(2) The basil package according to (1), wherein the oxygen permeability of the packaging material is 1000 to 2000 ml/(m ² ·24 hr·MPa) (20°C, relative humidity 90%).
(3) The basil package according to (1) or (2), wherein the basil is a first harvest.
(4) A method for preserving basil,
Basil is housed in a packaging material with a moisture permeability of 3 to 25 g/(m ² 24 hr) (40 ° C., relative humidity 90%), gas is filled in the packaging material, and the package is sealed to produce a basil package. that, as well as
A method characterized by storing the basil package at 10 to 20 ° C.
(5) The method according to (4), wherein the oxygen permeability of the packaging material is 1000 to 2000 ml/(m ² ·24 hr·MPa) (20°C, relative humidity 90%).

According to the basil package and the method for preserving basil according to one or more embodiments of the present invention, the quality of basil can be maintained for a long period of time.

FIG. 1 shows a perspective view of the appearance of a basil package 1. FIG. FIG. 2 shows a schematic diagram of a cross section of the basil package 1. As shown in FIG.

<Basil>
As used herein, "basil" refers to Ocimum basilicum L., also known as sweet basil. , Ocimum tenuiflorum, also called holy basil, and Ocimum basilicum L. or crosses of Ocimum tenuiflorum with other closely related species. Although many cultivars of basil are known, the method disclosed herein can be applied to any cultivar of basil. Ocimum basilicum L. Lemon basil can be exemplified as a hybrid between C. and other closely related species.

Basil may be a basil cultivated and harvested under an environment such as a plant cultivation apparatus or a plant factory in which various conditions such as light irradiation, temperature, and nutrition are artificially controlled. , basil grown and harvested in an environment where at least some of the conditions are natural conditions.

In the basil package or the method for preserving basil according to one or more embodiments of the present invention, “basil” refers to the part of the harvested basil plant. The part of the harvested basil plant is not particularly limited as long as it is in a raw state, but it is preferably a part containing at least a part selected from leaves and stems, and a part containing at least leaves is preferred, and a portion containing at least leaves and stems is more preferred.

For basil, for example, the stem of the basil plant grown from the seedling is cut, and the part containing the stem and leaves above the cutting position is harvested for the first harvest, and the basil plant after harvest is further cultivated. Axillary buds growing from the cutting position of the stem can be grown by cutting the grown axillary buds, and the leaves and parts containing the leaves of the axillary buds can be harvested by the second and subsequent harvesting. The basil used in the basil package or the basil storage method according to one or more embodiments of the present invention may be the first harvest or the second or subsequent harvest, but the first harvest is more preferred. According to the basil package or the basil storage method according to one or more embodiments of the present invention, the first harvested basil tends to retain its quality for a longer period than the second and subsequent harvested basil. be.

<Basil package>
A basil package according to one or more embodiments of the present invention,
including basil and packaging material;
The moisture permeability of the packaging material is 3 to 25 g/(m ² · 24 hr) (40 ° C., relative humidity 90%),
The packaging material is characterized in that the basil is housed together with a gas that fills the inside of the packaging material, and the packaging material is sealed.

The basil package according to the present embodiment is stored under normal temperature (around 25 ° C.), low temperature (10 to 20 ° C.), or refrigerated (4 to 10 ° C.) temperature conditions, and basil remains even after 14 days or more. It is possible to maintain quality with little deterioration in quality. As described above, the conventional basil package could keep its quality for only about one week.

The basil package according to the present embodiment can be stored for a long period of 21 days or more when stored in a particularly low temperature range (10 to 20 ° C.), specifically in a temperature range of 13 to 17 ° C. .

In the basil package according to the present embodiment, by using the packaging material having a moisture permeability of 3 to 25 g / (m ² · 24 hr) (40 ° C., relative humidity 90%), the quality of basil is maintained for a long period of time. Although the mechanism of this is not necessarily clear, the following mechanism is presumed. That is, with a packaging material having a moisture permeability within the above range, the inside of the container is kept in a high humidity state, and transpiration of water from basil leaves etc. can be prevented, so that wilting of the leaves is suppressed and long It is possible to save the period.

The moisture permeability (40° C., relative humidity 90%) of the packaging material is more preferably 3 to 20 g/(m ² ·24 hr), still more preferably 3 to 15 g/(m ² ·24 hr), especially It is preferably 3 to 10 g/(m ² ·24 hr), most preferably 3 to 7 g/(m ² ·24 hr).

More preferably, the packaging material is further characterized by having an oxygen permeability of 1000 to 2000 ml/(m ² ·24 hr·MPa) (20°C, relative humidity 90%). According to the basil package using the packaging material that satisfies this condition for oxygen permeability in addition to moisture permeability, the moisture permeability is 3 to 25 g / (m ² 24 hr) (40 ° C., relative humidity 90%). is preferable because the quality of basil can be maintained for a long period of time as compared with a basil package using a packaging material whose oxygen permeability does not satisfy the above conditions. This effect is particularly remarkable in storage in a low temperature range (10 to 20°C), specifically in a temperature range of 13 to 17°C.

In the basil package according to the present embodiment, the moisture permeability is 3 to 25 g / (m ² 24 hr) (40 ° C., relative humidity 90%), and the oxygen permeability is 1000 to 2000 ml / (m ² 24 hr MPa) ( Although the mechanism by which the quality of basil is maintained for a long period of time by using the packaging material (20° C., relative humidity of 90%) is not necessarily clear, the following mechanism is presumed.
That is, with a packaging material having an oxygen permeability within the above range, the respiration rate of basil is suppressed and the consumption rate of components in the body is reduced. Presumed. If the oxygen permeability is too high, oxygen will be constantly supplied, and the respiration volume and the consumption rate of body components will increase. Corruption is likely to start. These problems can be avoided by setting the oxygen permeability to the above range. Methods for measuring moisture permeability and oxygen permeability are described in Examples.

In the basil package according to the present embodiment, it is preferable that the inner surface of the packaging material containing at least the basil has antifogging properties. Since dew condensation is suppressed by the inner surface having antifogging properties, adhesion of water droplets, which causes deterioration of the basil, to the basil in contact with the surface is suppressed.

The packaging material is preferably a bag-shaped packaging material formed of a flexible film material. As the film material, a film material containing polypropylene or polyethylene as a main component is preferable, and a film material containing polypropylene as a main component is particularly preferable. The polypropylene may be unstretched polypropylene or biaxially stretched polypropylene, but biaxially stretched polypropylene is particularly preferred. The film material is preferably a transparent film material.

In the basil package according to the present embodiment, the packaging material contains basil together with gas filling the packaging material and is sealed. The gas is preferably air, but may be an inert gas such as nitrogen. In a mode in which the packaging material is a bag-shaped packaging material formed of a flexible film material, the packaging material is sealed while being filled with the gas so that the gas expands the voids in the packaging material. It is preferable that According to this aspect, the shape of the packaging material is easily retained by the internal gas, and the basil in the packaging material is protected from external impact.

The method for producing the basil package according to this embodiment is not particularly limited. For example, it can be produced by housing basil in the packaging material and sealing the packaging material in a state in which the packaging material is filled with gas. The sealing of the packaging material can be performed by an ordinary method such as heat sealing.

A preferred example of the basil package according to this embodiment will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 shows a perspective view of the appearance of the basil package 1, and FIG. 2 shows a schematic diagram of a cross section of the basil package 1. As shown in FIG.

A basil package 1 according to this example includes a basil 2 and a packaging material 3 . In the illustrated example, the packaging material 3 is a substantially regular tetrahedral bag-shaped packaging material formed of a transparent and flexible film material. The packaging material 3 accommodates and seals the basil 2 together with gas (air) 4 filling the inside of the packaging material 3 . In the basil package 1 according to this example, the packaging material 3 is filled with the gas 4 so that the gas 4 sufficiently expands the voids in the packaging material 3 . In the basil package 1 according to this example, the shape is held by the gas 4 in the packaging material 3, and the basil 2 is protected from impact.

<How to save basil>
A method for preserving basil according to one or more embodiments of the present invention comprises:
Basil is housed in a packaging material with a moisture permeability of 3 to 25 g/(m ² 24 hr) (40 ° C., relative humidity 90%), gas is filled in the packaging material, and the package is sealed to produce a basil package. that, as well as
The basil package is characterized by being stored at 10 to 20°C.

According to the method for preserving basil according to the present embodiment, it is possible to maintain the quality of basil for a long period of time, specifically 14 days or more, more preferably 21 days or more.

The features and method of making the basil package in the method for preserving basil according to the present embodiment are as described for the basil package according to one or more embodiments of the invention disclosed herein.

By storing the basil package at 10 to 20°C, the quality of the basil can be maintained for a longer period of time than when stored at a temperature of less than 10°C or more than 20°C. The storage temperature of the basil package is more preferably 13 to 17°C.

<Experiment 1>
Sweet basil (Ocimum basilicum L.): Basilina (Futaba Seed Co., Ltd.) seeds are sown in a urethane medium that has absorbed nutrient solution in a plant cultivation apparatus, and the length of a pair of true leaves is about 60 mm or more. Seedlings were obtained by raising seedlings to the size of .
In a plant cultivation apparatus, the seedlings after raising are planted, and the light-dark cycle is 24 hours (16 hours light period / 8 hours dark period), the temperature is 26 ° C., the relative humidity is 75%, and _the CO concentration is 1000 ppm. Cultivation was continued until the last 7 cycles, and in the 8th cycle, the grown basil was harvested at a position about 2 cm above the lowermost leaf to obtain the first crop. In order to regenerate basil from the stems remaining after the first harvest, it is cultivated for 14 more cycles after the first harvest. It was harvested at a position of about 4 cm and used as the second crop.

Approximately 13 to 15 g of the basil harvested above was housed in each of the following packaging materials, and sealed so that the gaps in the packaging materials were filled with air to obtain basil packages.
Packaging material 1 (Example 1): As shown in Fig. 1, a transparent and flexible biaxially oriented polypropylene (OPP) film material was processed into a regular tetrahedral bag having a side of approximately 16 cm, and the basil was added. , a packaging material in which a regular tetrahedral shape is accommodated and sealed with an amount of air that can stand on its own. The OPP film material has a thickness of 20 μm, a moisture permeability of 4 to 5 g/(m ² 24 hr) (40° C., relative humidity 90%), and an oxygen permeability of 1500 ml/(m ² 24 hr MPa) (20° C.). , 90% relative humidity), and the inner surface is anti-fog treated.
Packaging material 2 (Comparative Example 1, not shown): The basil was placed in a transparent polyethylene terephthalate (PET) tray (inner space depth: 5 cm, width: 13.5 cm, length: 13.5 cm) together with air. A packaging material in which the opening is closed and sealed with a film lid. The PET tray has a moisture permeability of 45 to 50 g/(m ² 24 hr) (40° C., relative humidity 90%) and an oxygen permeability of 110 to 120 ml/(m ² 24 hr MPa) (20° C., relative humidity 90%).
Packaging material 3 (Example 2): As shown in Fig. 1, a transparent and flexible polyethylene (PE) film material was processed into a regular tetrahedral bag having a side of approximately 16 cm. A packaging material containing and sealed with an amount of air that allows the body shape to stand on its own. The PE film material has a thickness of 20 μm, a moisture permeability of 18 g/(m ² 24 hr) (40° C., relative humidity 90%), and an oxygen permeability of 3900 to 13000 ml/(m ² 24 hr MPa) (20° C.). , 90% relative humidity) and is not anti-fog treated.

Moisture permeability measurement method: Based on the moisture permeability test method for moisture-proof packaging materials specified in JIS Z 0208-1976.

Oxygen permeability measurement method: Based on the plastic-film and sheet-gas permeability test method specified in JIS K 7126-2:2006.

The basil package using each packaging material was stored in a dark place under temperature conditions of 5°C, 15°C and 25°C for 28 days. After 7 days, 12 days, 14 days, 21 days, and 28 days from the start of storage, the basil package was observed from the outside to evaluate the state of the basil. Three basil packages were prepared under one condition and evaluated. In the first harvest, some were not evaluated after 7 days and 12 days, and in the second harvest, the basil package using the packaging material 3 was not evaluated. In the first harvest, in the storage test 12 days after the start of storage at 25 ° C., the individual number 2 of the basil package using the packaging material 1 was not evaluated because the sealing was incomplete (Table 16).

For each basil package, for each of the following evaluation items, the degree of deterioration is 1, and the degree of deterioration is 4, and 1, 2, 3, and 4 are scored. bottom.
Yellowing Blackening of leaves Blackening of buds Blackening of stems Withering Soft rot
Leaf mold Bud mold Stem mold Condensation

At each storage time under each condition, based on the evaluation points (1 to 4) of each evaluation item of the three basil packages, pass (◯) and fail (×) were evaluated according to the following criteria.
O: At the time of evaluation, "3" or higher was given for all evaluation items.
x: At the time of evaluation, "2" or less was attached in any of the evaluation items.

The evaluation results of pass (◯)/failure (x) for the first and second harvests are shown in Tables 1 and 2 below. In addition, raw scores (1 to 4) for each evaluation item of the three basil packages of the first harvest are shown in Tables 3 to 18 below. Raw scores for each evaluation item for the two basil packages from the second harvest are shown in Tables 19 to 31 below.
As shown in Table 1, in the first harvest, the basil package using the packaging material 1 can be stored for a long period of 14 days or more at any temperature of 5 ° C., 15 ° C., or 25 ° C. The quality of sweet basil was maintained for 21 days, especially when stored at 15°C. Moreover, the basil package using the packaging material 3 was able to maintain the quality of sweet basil at temperatures of 5° C. and 15° C. for a long period of 14 days or longer. On the other hand, in the basil package using the packaging material 2, the quality of the basil deteriorated in less than 14 days except when stored at 15°C, and long-term storage was difficult.
As shown in Table 2, in the second harvest, the basil package using the packaging material 1 can be stored at temperatures of 5 ° C. and 15 ° C. for a long period of 14 days or more, especially at 15 ° C. Sweet basil quality was maintained for 21 days when stored. Also in the second harvest, it was confirmed that the basil package using the packaging material 2 had excellent storage stability at the above temperature.
In addition, in the basil package using the packaging material 1, it was confirmed that the quality of the first harvest of sweet basil tends to be maintained for a longer period of time than the second harvest (for example, at 25 ° C. temperature).
Also, in the first and second harvests, the basil package using the packaging material 1, in which the moisture permeability of the packaging material is 4 to 5 g / (m ² 24 hr) (40 ° C., relative humidity 90%), It was confirmed that the basil package using the packaging material 2, which has a moisture permeability of 18 g/(m ² ·24 hr) (40° C., relative humidity of 90%), is superior in storage stability.

Claims (5)

A basil package containing basil and a packaging material,
The moisture permeability of the packaging material is 3 to 25 g/(m ² · 24 hr) (40 ° C., relative humidity 90%),
A basil package, wherein the packaging material accommodates the basil together with a gas filling the inside of the packaging material and is sealed. The basil package according to claim 1, wherein the oxygen permeability of the packaging material is 1000 to 2000 ml/(m ² ·24 hr · MPa) (20°C, relative humidity 90%). The basil package according to claim 1 or 2, wherein the basil is the first harvest. A method for preserving basil, comprising:
Basil is housed in a packaging material with a moisture permeability of 3 to 25 g/(m ² 24 hr) (40 ° C., relative humidity 90%), gas is filled in the packaging material, and the package is sealed to produce a basil package. that, as well as
A method characterized by storing the basil package at 10 to 20 ° C. 5. The method according to claim 4, wherein the oxygen permeability of the packaging material is 1000-2000 ml/(m ² ·24 hr·MPa) (20° C., relative humidity 90%).

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