RU2809599C1 - Method of extending life of cut flowers in vase - Google Patents

Abstract

FIELD: floristry.

SUBSTANCE: invention relates to the preservation of cut flowers. A method of extending the vase life of cut flowers involves watering by immersing the cut flowers in an aqueous solution of sodium dichloroisocyanurate (NaDCC), storing the watered cut flowers at the room temperature or in the refrigerator for 2 to 36 hours, and then irradiating the cut flowers. The concentration of aqueous sodium dichloroisocyanurate (NaDCC) solution ranges from 10 ppm to 200 ppm. Immersion lasts from 1 hour to 10 hours. Irradiation is carried out at a dose of 100 Gy to 300 Gy with any radiation from electron beams, X-rays and gamma rays. Storage in the refrigerator is carried out at a temperature of 1°C to 10°C.

EFFECT: proposed method of extending the life of cut flowers in a vase improves the condition of cut flowers, prolongs flowering and improves the quality of the bud.

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Description

Technical field

The present invention relates to a method for extending the life of cut flowers in a vase.

State of the art

Cut flowers are flowers or flower buds cut from a plant along with its stems and leaves, and they are used for ornamental or ornamental purposes. Because cut flowers have a very short wilting period compared to other flowering plants, it is important to extend their vase life.

In general, the method of extending the life of cut flowers after picking can be thought of as pre-treatment (in which the cut flowers are treated with a chemical immediately after picking) and post-treatment (in which the consumer properly dilutes the chemical in a solution in a vase). In addition, in terms of the propagation process of cut flowers, a distinction is made between dry and wet propagation; however, since wet propagation is costly, most growers propagate cut flowers after directly pre-treating them with a chemical after harvesting the flowering plants in order to extend their life in the vase during propagation.

It is currently estimated that the losses incurred during storage and distribution after harvesting flower plants in Korea account for about 30-40% of the total production. Although the export potential of domestic flowers is gradually increasing, the development of long-term storage and export technologies is lagging behind, resulting in weakening international competitiveness. Therefore, there is a need to develop a continuous and systematic technology to maintain freshness and improve quality during cut flower distribution.

Patent Document 1: Republic of Korea Patent Application Publication No. 2017-0140711 (December 21, 2017).

One aspect of the present invention provides a method for extending the life of cut flowers in a vase to maintain freshness even while the flowering plants are propagating in a dry state.

Another aspect of the present invention relates to a method for producing cut flowers with increased vase life.

Brief description of the invention

To solve the problems described above, one aspect of the present invention provides a method for extending the vase life of cut flowers, which includes watering by immersing the cut flowers in an aqueous solution of sodium dichloroisocyanurate (NaDCC) and then irradiating the cut flowers.

Another aspect of the present invention relates to a method of producing cut flowers with increased vase life, which includes watering by immersing the cut flowers in an aqueous solution of sodium dichloroisocyanurate (NaDCC) followed by irradiation of the cut flowers.

According to the present invention, cut flowers treated with irradiation after watering with an aqueous NaDCC solution can have the effect of significantly improving survival compared to those treated with NaDCC alone or irradiation alone, or sprayed with an aqueous NaDCC solution.

Additionally, with respect to cut flowers with extended vase life, according to the present invention, flowering is delayed by 36 hours or more and vase life is extended by three days or more. It is therefore expected that the losses that may occur during the storage and distribution of cut flowers can be reduced and, as a consequence, this can contribute to the diversity of exporting countries.

Brief description of drawings

In fig. Figure 1 shows a graph illustrating the effect of NaDCC aqueous solution concentration on extending the vase life of cut roses, expressed as survival rate (%).

In fig. Figure 2 is a graph illustrating the effect of irradiation treatment and NaDCC aqueous solution concentration on increasing the vase life of cut roses, expressed as survival rate (%).

In fig. Figure 3 shows an image and graph illustrating the effect of the NaDCC aqueous treatment method on extending the life of cut roses in a vase (where A represents the group in which watering was carried out by treating with purified water; B represents the group in which watering was carried out by treating with 70 ppm (ppm) NaDCC; and C represents the group that was sprayed with 70 ppm NaDCC).

In fig. 4 is a graph illustrating the effect of treatment with NaDCC, electron beams or both on extending the vase life of cut roses, expressed as survival rate (%).

In fig. 5 is an image illustrating the effect of treatment with NaDCC, electron beams, or both on extending the life of cut roses in a vase (where 5A represents the group in which watering was carried out by treating with purified water; 5B represents the group in which watering was carried out using NaDCC; 5C represents the group irrigated with NaDCC and irradiated with 200 Gy; 5D represents the group irradiated with 200 Gy electron beams).

Detailed Description of the Preferred Embodiment The present invention will be described in detail below.

In one aspect, the present invention provides a method for extending the vase life of cut flowers.

The method of extending the life of cut flowers in a vase according to the present invention includes watering by immersing the cut flowers in an aqueous solution of NaDCC and then irradiating the cut flowers.

The term "cut flowers" refers to flowers or flower buds that have been cut from a plant along with its stems and leaves, and cut flowers as used herein can include any flowering plants without limitation when their period from maturity to wilting is short, e.g. roses, lilies, chrysanthemums, etc..

The term "watering" generally refers to the circulation of water through the body of cut flowers by immersing them in purified water to a certain level in order to preserve the life of the flowering plant which is in a cut state in a vase, and in the present description "watering" can be used to mean, involving dipping cut flowers in an aqueous solution of NaDCC instead of water.

An aqueous solution of NaDCC is used as a watering treatment and can be used to extend the vase life of cut flowers. Specifically, the concentration of the NaDCC aqueous solution can be from 10 ppm to 200 ppm, namely: 10 ppm to 150 ppm, 10 ppm to 100 ppm, 10 ppm to 80 ppm, 20 ppm to 100 ppm, 20 ppm to 80 ppm, from 20 ppm to 70 ppm, from 30 ppm to 100 ppm, from 30 ppm to 80 ppm, from 50 ppm to 100 ppm, from 50 ppm to 80 ppm or from 50 ppm to 70 ppm.

The immersion can be carried out for a period of time typically required to circulate the NaDCC aqueous solution within the body of the cut flowers, and in particular can last from, but is not limited to, 1 to 10 hours, 2 to 8 hours, or 3 to 8 hours.

Radiation can be any type of radiation (such as electron rays, x-rays, and gamma rays) that can prolong the bloom of cut flowers or extend their life in a vase.

You can be exposed to radiation at a radiation dose of 100 Gy to 300 Gy, a radiation dose of 100 Gy to 250 Gy, and a radiation dose of 100 Gy to 200 Gy. When irradiated within the radiation dose range described above, the overall vase life of cut flowers can be further extended.

The method of extending the life of cut flowers of the present invention may further include storing watered cut flowers at room temperature or in a refrigerator.

In particular, watered cut flowers can be stored at room temperature or in the refrigerator for a specified period of time. The predetermined period of time may be from 2 to 36 hours, namely: 5 to 36 hours, 5 to 24 hours, 5 to 20 hours, 8 to 36 hours, 8 to 24 hours, 8 to 20 hours, from, but not limited to, 10 to 36 hours, 10 to 24 hours, or 10 to 20 hours.

Refrigerated storage may be carried out at a temperature of 1°C to 10°C, in particular, but not limited to, 2°C to 10°C, 3°C to 10°C, or 4°C to 10°C .

By storing watered cut flowers under the above-described temperature conditions for the above-mentioned time, the shape of the flower can be well preserved during the flowering period, and the effect of extending the vase life of the cut flowers can be further improved.

With the vase life extension method of the present invention, flowering can be extended by more than 36 hours compared to the prior art in which cut flowers were simply watered with purified water, thereby extending their vase life.

In another aspect, the present invention includes immersing cut flowers in an aqueous solution of sodium dichloroisocyanurate (NaDCC) and then irradiating the cut flowers.

The method of preparing cut flowers with extended vase life of the present invention may further include storing the watered cut flowers at room temperature or in a refrigerator for a predetermined period of time.

NaDCC aqueous solution, immersion, specified period of time and refrigerated storage are described above.

The present invention is described in detail through examples and experimental examples. However, the following examples and experimental examples are intended to illustrate the present disclosure only, and the content of the present invention is not limited to the examples and experimental examples described below.

Example 1. Effect of treatment with various concentrations of an aqueous solution of NaDCC on extending the life of cut roses in a vase

After treating cut roses with an aqueous solution of NaDCC at various concentrations, the effect of extending the life of cut roses in a vase was compared depending on the concentration.

Specifically, NaDCC aqueous solution was prepared at different NaDCC concentrations by dissolving NaDCC in purified water to concentrations of 0 ppm, 1 ppm, 10 ppm, 50 ppm, 100 ppm and 500 ppm. The experimental groups were divided in such a way that each experimental group contained 20 cut roses of the Autumn Party variety, which have a weaker survival rate compared to other varieties. Cut roses were watered by immersing them in 1 L of NaDCC aqueous solution of varying concentrations for 6 hours. After watering was completed, the watered cut roses were placed separately in a vase containing 500 ml of purified water, and in particular, the flowers were trimmed again from the bottom before being placed in the vase. After storage at room temperature for 5 days, changes were observed in the cut roses. Cut roses with bent necks and those with dried or fallen petals were excluded when calculating the number of survivors, and the survival rate was calculated from the ratio of the number of survivors to the number of pieces, and the results are shown in Fig. 1.

As a result, as shown in FIG. 1, it was confirmed that the survival rate of cut roses that were watered by immersion in aqueous NaDCC solution with a concentration of 10 ppm to 100 ppm was significantly higher compared to the survival rate of cut roses immersed in 1 ppm or 500 ppm NaDCC aqueous solution and compared to untreated cut roses.

Example 2. The effect of combined treatment with irradiation and treatment with various concentrations of an aqueous solution of NaDCC on extending the life of cut roses in a vase

After treating cut roses with an aqueous solution of NaDCC at various concentrations followed by irradiation, the effect of extending the life of cut roses in a vase was compared depending on the concentration.

Namely, NaDCC aqueous solution was prepared with different concentrations of NaDCC by dissolving NaDCC in purified water to concentrations of 0 ppm, 1 ppm, 10 ppm, 50 ppm, 100 ppm and 500 ppm. The experimental groups were divided in such a way that each experimental group had 20 cut roses of the Narsha variety. Cut roses were watered by immersion in 1 L of NaDCC aqueous solution of different concentrations for 6 hours and then irradiated with 0.15 mA electron beams at a dose of 200 Gy. The irradiated cut roses were separately placed in a vase containing 500 ml of purified water, and in particular, the cut flowers were trimmed from the bottom again before being placed in. Changes in cut roses were observed at room temperature for 11 days. Cut roses with bent necks and those whose petals withered or fell off were excluded when calculating the number of survivors, and the survival rate was calculated from the ratio of the number of survivors to the number of pieces, and the results are shown in Fig. 2.

As a result, as shown in FIG. 2, it was confirmed that the survival rate in all groups did not change after the first 3 days; however, after 8 days, the vase life extension effect of cut roses immersed in 50 ppm and 100 ppm NaDCC aqueous solution was significantly enhanced compared to other groups.

Example 3. The effect of various methods of treatment with an aqueous solution of NaDCC on increasing the lifespan of cut roses in a vase

After spraying cut roses with an aqueous solution of NaDCC or treating cut roses with irradiation after watering, the effect of extending the vase life of cut roses was compared.

Specifically, for the control group (A) and watered group (B), 20 cut roses of the Narsha variety in each group were watered by immersion in 1 L of purified water or an aqueous solution containing 70 ppm NaDCC. For spray group (C), 25 ml of aqueous solution containing 70 ppm NaDCC was evenly sprayed on 20 cut roses and then watered by immersion in purified water in the same manner as the control group. Cut roses in each group were watered for 6 h, cooled by storing at 4°C and after 18 h irradiated with electron beams at a dose of 200 Gy. After irradiation, cut roses were placed in a vase containing 1 liter of purified water, kept at room temperature for 5 days, and changes in the cut roses were observed. Cut roses with bent necks and those whose petals withered or fell off were excluded when calculating the number of survivors, and the survival rate was calculated from the ratio of the number of survivors to the number of pieces, and the results are shown in Fig. 3.

As a result, as shown in FIG. 3, it was confirmed that the survival rate was increased by 45% or more in the group that was treated with NaDCC spray compared with the group that was treated with NaDCC spray.

Example 4. Effect of combined treatment with an aqueous solution of NaDCC and irradiation on extending the life of cut roses in vases

After treating cut roses alone or in combination with aqueous NaDCC and irradiation, the effect of extending the vase life of cut roses was compared.

Namely, cut roses of the Orange gold variety, which were divided into experimental groups of one bunch (10 roses), were watered with an aqueous solution containing 70 ppm NaDCC, watered with an aqueous solution containing 70 ppm NaDCC, followed by irradiation with electron beams at a dose of 200 Gy or only irradiated with electron beams at a dose of 200 Gy, respectively, and then separated into a vase containing 500 ml of purified water, kept for 3 days at constant temperature and humidity (24 ° C and 60% humidity), and changes in the cut roses were observed. Cut roses with bent necks and those with dried or fallen petals were excluded when calculating the number of survivors, and the survival rate was calculated from the ratio of the number of survivors to the number of pieces, and the results are shown in Table 1.

As a result, as can be seen from Table 1 and Fig. 4, it was confirmed that while the group treated with irradiation alone had no surviving cut roses after 2 days, and the group treated with NaDCC only showed a survival rate of only 5.88% after 3 days, the group treated with NaDCC and irradiation together gave a survival rate of 68.75% even after 3 days.

From these results, it can be seen that when NaDCC aqueous solution and irradiation were treated together, the survival rate of cut flowers was significantly increased compared to the cases when either NaDCC aqueous solution or irradiation were treated separately.

Example 5: Synergistic effect of extending vase life with aqueous NaDCC and irradiation treatment under simulated export cooling conditions

The effect of extending the vase life of cut roses was compared by treating cut roses alone or in combination with aqueous NaDCC and irradiation, followed by refrigeration at 4°C for 4 days, simulating long-distance export conditions.

Namely, the cut roses were divided into control group (A) and experimental groups (NaDCC watering group B), watering and irradiation combined group (C), and irradiation group (D)). Then, 10 cut Narsha roses were watered by immersing them in 1 liter of purified water or an aqueous solution containing 70 ppm NaDCC. After this, the cut roses of all groups were watered by immersion in purified water in the same way as in the control group. Cut roses in each group were watered for 6 hours, stored in a refrigerator at 4°C, and then irradiated with electron beams at a dose of 200 Gy. After irradiation, the cut roses were separated and placed in a vase containing 1 liter of purified water, cooled at 4°C for 4 days, taking into account long-distance transportation, left at room temperature for 24 hours, and then changes were observed in the cut roses.

As a result, as can be seen in FIG. 5, it was shown that when cut roses were left for 24 hours at room temperature after storage at 4°C for 4 days, only the group treated with NaDCC irrigation (B) and the group treated together with irrigation and irradiation (C) survived, where , although the NaDCC aqueous solution-treated group (B) survived, wilting was faster than the co-treated group (C).

Example 6. Effect of watering treatment with an aqueous solution of NaDCC on prolongation of flowering

The effect of prolonging the flowering of cut roses was compared after watering cut roses with an aqueous solution of NaDCC; or after irrigation with an aqueous NaDCC solution followed by irradiation.

Namely, cut roses were divided into control group (A) and experimental groups (NaDCC irrigation-treated group (B) and irrigation-irradiation combined treatment group (C)). Cut Pink Yoyo roses in each group were then watered by immersion in 1 L of purified water or an aqueous solution containing 70 ppm NaDCC. Cut roses in each group were watered for 6 hours, stored in a refrigerator at 4°C, and after 18 hours, cut roses in the co-treatment group were exposed to electron beams at a dose of 200 Gy. After irradiation, the cut roses were separated and placed in a vase containing 1 liter of purified water, cooled for 4 days, taking into account long-distance transportation, left at room temperature for 24 hours, and then the degree of flowering was calculated based on the ratio of the number of flowers to the number of pieces, and the results are shown in table 2 below. The experiment was repeated twice.

As a result, as shown in Table 2, it was found that flowering was prolonged in the group treated with NaDCC irrigation, while in the co-treatment group where NaDCC irrigation was followed by irradiation, the flowering rate was reduced more significantly.

Claims (13)

1. A method of extending the life of cut flowers in a vase, comprising watering by immersing the cut flowers in an aqueous solution of sodium dichloroisocyanurate (NaDCC); storing watered cut flowers at room temperature or in the refrigerator for 2 to 36 hours; and subsequent irradiation of cut flowers, in which the concentration of the aqueous solution of sodium dichloroisocyanurate (NaDCC) is from 10 ppm to 200 ppm, in which irradiation is carried out with any radiation from electron beams, x-rays and gamma rays, and in which irradiation is carried out at a dose of 100 Gy to 300 Gy. 2. The method according to claim 1, wherein the concentration of the aqueous solution of sodium dichloroisocyanurate (NaDCC) is from 50 ppm to 100 ppm. 3. The method according to claim 1, in which the immersion is carried out from 1 hour to 10 hours. 4. The method according to claim 1, in which irradiation is carried out at a dose of 100 Gy to 250 Gy. 5. The method according to claim 1, in which irradiation is carried out with electron beams. 6. The method according to claim 1, in which storage in the refrigerator is carried out at a temperature from 1°C to 10°C. 7. A method of preparing cut flowers with extended vase life, comprising watering by immersing the cut flowers in an aqueous solution of sodium dichloroisocyanurate (NaDCC); storing watered cut flowers at room temperature or in the refrigerator for 2 to 36 hours; and subsequent irradiation of cut flowers, in which the concentration of the aqueous solution of sodium dichloroisocyanurate (NaDCC) is from 10 ppm to 200 ppm, in which irradiation is carried out with any radiation from electron beams, x-rays and gamma rays, and in which irradiation is carried out at a dose of 100 Gy to 300 Gy.