WO2009099008A1

WO2009099008A1 - Method of preserving cut flower, kit for preserving cut flower, method of producing processed cut flower and processed cut flower

Info

Publication number: WO2009099008A1
Application number: PCT/JP2009/051572
Authority: WO
Inventors: Yasunori Yomo; Mami Furukawa
Original assignee: Suntory Flowers Limited
Priority date: 2008-02-06
Filing date: 2009-01-30
Publication date: 2009-08-13
Also published as: TW200942168A; JPWO2009099008A1

Abstract

A method of preserving a cut flower by substituting the tissue liquid in the cut flower by a preserving solution to thereby preserve the cut flower, which comprises the following steps: (1) a first substitution step of substituting the tissue liquid in the cut flower as described above by a hydrophilic organic solvent; and (2) a second substitution step of substituting the above-described hydrophilic organic solvent, by which the tissue liquid as described above in the cut flower as described above has been substituted, by a mixed solution containing a preserving solution, which is a non-volatile or hardly volatile organic solvent being compatible with the above-described hydrophilic organic solvent, and the hydrophilic organic solvent as described above.

Description

Cut flower preservation method, cut flower preservation kit, processed cut flower production method and processed cut flower

The present invention relates to a method for preserving cut flowers that improves the longevity of the cut flowers by replacing the tissue water in the cut flowers with a preservative solution, and a method for producing processed cut flowers with a long shelf life.

In recent years, processed cut flowers called preserved flowers have attracted attention. Preserved flowers are the ones that replace the moisture in the tissues (hereinafter referred to as tissue fluids) with cut stocks such as roses and carnations, and are more similar to fresh flowers than dried flowers (shape, texture, As a unique floral material, it is often used for wedding bouquets, ordinary household entrances, and living room arrangements.
As a conventional method for producing such a preserved flower, for example, methods disclosed in Patent Document 1 and Patent Document 2 below are known.
Japanese Patent No. 3548744 JP 2007-11959 A

However, the method described in Patent Document 1 has a problem that the flower is severely deteriorated under high temperature and high humidity, and the color of the petal changes to white or becomes partially transparent. . In the method described in Patent Document 2, depending on the type of cut flower to be treated, the step of replacing the hydrophilic organic solvent substituted with the tissue fluid in the cut flower with the preservation solution is not always successful. In some cases, the shape (size and shape) could not be sufficiently maintained.
This invention is made | formed in view of the said situation, The objective is to provide the preservation method of the cut flower which can maintain the shape of a cut flower more stably, and the manufacturing method of a processed cut flower.

The first characteristic means of the method for preserving cut flowers according to the present invention is a method for preserving the cut flowers by replacing the tissue fluid in the cut flowers with the preservative solution, and the following steps are as follows: 1. a first replacing step of replacing the tissue fluid in the cut flowers with a hydrophilic organic solvent; The hydrophilic organic solvent substituted with the tissue fluid in the cut flowers contains a storage solution that is compatible with the hydrophilic organic solvent and is a non-volatile or hardly volatile organic solvent, and the hydrophilic organic solvent A second substitution step of substituting with the mixed solution.

[Action and effect]
As shown in Example 2 to be described later, in the present invention, a mixture containing a preservative solution that is a non-volatile or hardly volatile organic solvent that is compatible with a hydrophilic organic solvent and a hydrophilic organic solvent. Compared with the conventional method using the solution and using the preservation solution as it is, the shape of the cut flower is easily maintained, and the cut flower can be stored more stably in a shape close to the original fresh flower.

The second characteristic means of the method for preserving cut flowers according to the present invention is a method for preserving the cut flowers by substituting the tissue fluid in the cut flowers with the preservative solution. 1. a first replacing step of replacing the tissue fluid in the cut flowers with a hydrophilic organic solvent; The hydrophilic organic solvent substituted with the tissue fluid in the cut flowers contains a storage solution that is compatible with the hydrophilic organic solvent and is a non-volatile or hardly volatile organic solvent, and the hydrophilic organic solvent 2. a second substitution step of substituting with the first mixed liquid; The first mixed liquid in the cut flowers is a mixed liquid containing the hydrophilic organic solvent and the preservative liquid, and the second mixed liquid having a larger content of the preservative liquid than the first mixed liquid is replaced. Including a third substitution step.

[Action and effect]
The present invention relates to a second substitution step of substituting a first liquid mixture containing a preservation solution that is a non-volatile or hardly volatile organic solvent having affinity with a hydrophilic organic solvent, and a hydrophilic organic solvent, and The first mixed liquid in the cut flowers is a mixed liquid containing the hydrophilic organic solvent and the preservative liquid, and the second mixed liquid having a larger content of the preservative liquid than the first mixed liquid is replaced. Including a third substitution step.
That is, the present invention is capable of carrying out a plurality of substitution steps step by step while increasing the content of the preservation solution in the mixed solution to be used. Compared with the conventional method using the liquid as it is, the shape of the cut flower is easily maintained, and it is resistant to drying, and it is possible to store the cut flower in a shape close to the original fresh flower more stably.

The third characteristic means of the method for preserving cut flowers according to the present invention is that the hydrophilic organic solvent contains at least one liquid selected from the group consisting of ethanol, normal propyl alcohol, and isopropyl alcohol.

[Action and effect]
The hydrophilic organic solvent containing at least one liquid selected from the group consisting of ethanol, normal propyl alcohol, and isopropyl alcohol is immersed in cut flowers in the hydrophilic organic solvent as shown in Example 1 described later. In this case, the natural pigment contained in the cut flower is difficult to be leached and the cut flower is also difficult to contract.
These properties of the hydrophilic organic solvent have been found for the first time by the inventors' diligent research.

The fourth characteristic means of the method for storing cut flowers according to the present invention is that the storage solution is polypropylene glycol.

[Action and effect]
As described in Example 2 and Example 3 described later, the mixed solution containing polypropylene glycol can store cut flowers in a form (shape, texture, flower color, etc.) close to the original fresh flowers for a long period of time. . In particular, the mixed solution is difficult to leach natural pigments (anthocyanins, etc.) contained in cut flowers, and natural pigments are easily retained in the cut flowers, so the flower color of the cut flowers is close to the original flower color or an equivalent flower color. Can be held in.

The fifth characteristic means of the method for preserving cut flowers according to the present invention is that the content of polypropylene glycol in the mixed solution is 1% by volume to 80% by volume.

[Action and effect]
When 100% polypropylene glycol is used, (1) Progression of floret and petal atrophy occurs, (2) Deterioration of washing tends to occur in the washing process after replacement, and (3) Shape caused by the high hygroscopicity of polypropylene glycol. There are some problems that need to be solved, such as collapse and (4) always wet, but by replacing with a mixture of alcohols such as ethanol, isopropyl alcohol, normal propyl alcohol, These problems are solved.

The sixth characteristic means of the method for preserving cut flowers according to the present invention is that the content of polypropylene glycol in the first mixed solution is 1% to 40% by volume, and the content of polypropylene glycol in the second mixed solution Is 41 to 80% by volume.

[Action and effect]
Replacing with a first mixture having a polypropylene glycol concentration of 1% to 40% by volume and then replacing again with a second mixture having a polypropylene glycol concentration of 41% to 80% by volume reduces petal atrophy. It is suppressed and the shape of the cut flower can be maintained more stably.

The seventh characteristic means of the method for preserving cut flowers according to the present invention is that the method further comprises a step of rinsing the surface of the cut flowers with a hydrophilic organic solvent or a hydrophilic organic solvent other than the hydrophilic organic solvent.

[Action and effect]
Cut flowers that have undergone a replacement step with a mixed solution containing a hydrophilic organic solvent and a preservative solution may have unnatural color and texture due to the preservative solution adhering to the surface thereof.
Therefore, according to the present invention, the color and texture of the cut flower can be made closer to the original fresh flower by rinsing the preservative solution adhering to the cut flower surface with a hydrophilic organic solvent and washing it away.

A feature of the cut flower preservation kit according to the present invention is that it can be used in the method for preserving cut flowers provided with the feature means, and includes at least the hydrophilic organic solvent and the preservation solution.

[Action and effect]
If the kit for preserving cut flowers of the present invention is used, the method for preserving cut flowers provided with the above characteristic means can be easily carried out.

The first characteristic means of the method for producing a processed cut flower according to the present invention is a method for manufacturing a processed cut flower by substituting the tissue fluid in the cut flower with a preservation solution, which comprises the following steps: 1. a first replacing step of replacing the tissue fluid in the cut flowers with a hydrophilic organic solvent; The hydrophilic organic solvent substituted with the tissue fluid in the cut flowers contains a storage solution that is compatible with the hydrophilic organic solvent and is a non-volatile or hardly volatile organic solvent, and the hydrophilic organic solvent A second substitution step of substituting with the mixed solution.

The second characteristic means of the method for producing a processed cut flower according to the present invention is a method for manufacturing a processed cut flower by replacing the tissue fluid in the cut flower with a preservation solution, which comprises the following steps: 1. a first replacing step of replacing the tissue fluid in the cut flowers with a hydrophilic organic solvent; The hydrophilic organic solvent substituted with the tissue fluid in the cut flowers contains a storage solution that is compatible with the hydrophilic organic solvent and is a non-volatile or hardly volatile organic solvent, and the hydrophilic organic solvent 2. a second substitution step of substituting with the first mixed liquid; The first mixed liquid in the cut flowers is a mixed liquid containing the hydrophilic organic solvent and the preservative liquid, and the second mixed liquid having a larger content of the preservative liquid than the first mixed liquid is replaced. Including a third substitution step.

The third characteristic means of the method for producing a processed cut flower according to the present invention is that the hydrophilic organic solvent contains at least one liquid selected from the group consisting of ethanol, normal propyl alcohol, and isopropyl alcohol.

The fourth characteristic means of the method for producing a processed cut flower according to the present invention is that the preservation solution is polypropylene glycol.

The fifth characteristic means of the method for producing a processed cut flower according to the present invention is that the content of polypropylene glycol in the mixed solution is 1% by volume to 80% by volume.

According to a sixth feature of the method for producing a processed cut flower according to the present invention, the content of polypropylene glycol in the first mixed solution is 1% by volume to 40% by volume, and the content of polypropylene glycol in the second mixed solution is The amount is from 41% to 80% by volume.

The seventh characteristic means of the method for producing a processed cut flower according to the present invention is that it further includes a step of rinsing the surface of the cut flower with a hydrophilic organic solvent or a hydrophilic organic solvent other than the hydrophilic organic solvent.

The characteristic configuration of the processed cut flower according to the present invention is that it is manufactured by a method for manufacturing a processed cut flower provided with the characteristic means.

[Action and effect]
The processed cut flower of the present invention can maintain a shape close to the original fresh flower over a long period of time.

Before describing the embodiments of the present invention, terms used in the claims and specification will be described below.

(Cut flowers)
Examples of cut flowers to which the present invention can be applied include Turkish Kyocera (Symphony Marine, King of Blue Picot, Picco Rosa Pink Picot, Diamond Peach, Eucosa White, Rosina Pink), Delphinium (Aurora Blue Imp, Triton Light Blue), etc. However, it is not limited to these.

(Tissue fluid)
The tissue fluid in the present invention means a fluid (mainly moisture) present in cut flower tissue.

(Processed cut flowers)
The processed cut flowers in the present invention are those obtained by performing at least a first replacement step and a second replacement step, which will be described later, on the aforementioned cut flowers, and further performing a washing step and a drying step as necessary. A processed product of cut flowers. In the processed cut flower according to the present invention, the water held by the fresh flower is substantially replaced by the preservation solution, and the preservation is improved as compared with the fresh flower.

(Hydrophilic organic solvent)
The hydrophilic organic solvent in the present invention means an organic solvent having at least an affinity for water and a property that it can be replaced with a cut tissue fluid. In addition, as such a hydrophilic organic solvent, the natural pigment contained in the cut flower is hardly leached, and the cut flower is not easily contracted when the cut flower is immersed in the first substitution step described later. Those are preferred. Specifically, a hydrophilic organic solvent having a partition coefficient logP (parameter indicating the hydrophilicity / hydrophobicity of a molecule) in the vicinity of −0.271 to 0.344 and low viscosity is preferable.

Examples of the hydrophilic organic solvent applicable to the present invention include those containing at least one liquid selected from the group consisting of ethanol, normal propyl alcohol, and isopropyl alcohol. That is, as the hydrophilic organic solvent in the present invention, any one of the above-mentioned ethanol, normal propyl alcohol, and isopropyl alcohol may be selected and used, or these alcohols may be used as necessary. A plurality of alcohols may be arbitrarily selected and mixed, and the mixture may be used. In particular, when the cut flower is a white flower, in order to maintain a better flower color, a product obtained by adding a certain amount of methanol to the alcohols or a mixture thereof may be used.

(Preservation solution)
The preservation solution in the present invention means at least an organic solvent that has affinity with the hydrophilic organic solvent and is non-volatile or hardly volatile. In addition, as such a preservation solution, an organic solvent having a property that it is difficult to leach out a natural pigment contained in cut flowers is preferable. Specifically, it is non-volatile, has a partition coefficient logP (parameter indicating the hydrophilicity / hydrophobicity of the molecule) of around −0.236 to 2.8266, and a liquid storage solution at room temperature can improve the storage stability of the petal shape. It is preferable because it is excellent.
Examples of the preservation solution that can be applied to the present invention include polypropylene glycol, but are not limited thereto.

Embodiments of the present invention (a method for storing cut flowers and a method for producing processed cut flowers) will be described below.
[First Embodiment]
This embodiment includes the following (1) first substitution step and (2) second substitution step, and (3) a washing step and (4) a drying step are performed as necessary. May be.
(1) First substitution step First, the prepared cut flowers are immersed in the above-mentioned hydrophilic organic solvent for a predetermined time (for example, about 4 to 24 hours), so that the tissue fluid in the cut flower tissue is hydrophilic. Replace with organic solvent.

(2) Second replacement step Next, a container containing a mixed solution containing the hydrophilic organic solvent used in the first replacement step and the above-described preservative solution of the cut flowers dehydrated in the first replacement step. It is immersed in the inside for a predetermined time (for example, about 10 to 24 hours), and the hydrophilic organic solvent in the cut flower tissue is replaced with the mixed solution.

In this embodiment, when polypropylene glycol is used as the preservation solution, the content of polypropylene glycol in the mixed solution is preferably 1% by volume to 80% by volume.

(3) Washing step After the second replacement step, the surface of the cut flower is lightly rinsed with a washing solution described later to wash away the preservative solution adhering to the surface. This washing step is effective in removing the non-volatile organic solvent adhering to the surface of the cut flower in the second substitution step, particularly when a non-volatile organic solvent is used as the preservation solution.
(Cleaning solution)
As the cleaning liquid that can be used in the present invention, any solvent can be used as long as it can wash off the preservative liquid adhering to the cut flower surface with a solvent other than water.
Examples of such cleaning liquid include, but are not limited to, the aforementioned hydrophilic organic solvents. Moreover, the hydrophilic organic solvent used as the cleaning liquid is not limited to the hydrophilic organic solvent used in the first substitution step, and other hydrophilic organic solvents other than the hydrophilic organic solvent are used as necessary. Also good.

(4) Drying process Finally, the cut flowers that have been rinsed in the above washing process are dried to remove the cleaning liquid remaining on the surface. The drying method is a temperature / humidity condition (for example, a room temperature of 35 ° C. and a humidity of 70) that does not affect the shape of the cut flowers (processed cut flowers) that have undergone the above-described processing steps, such as standing, air drying, and warm air blowing. % Or less) is desirable. The drying time can be arbitrarily set from several minutes to several weeks.

According to this embodiment, compared with the conventional method using a preservation | save liquid as it is, the shape of a cut flower is easy to be maintained, and a cut flower can be preserve | saved more stably by the shape close | similar to the original fresh flower.
This is because the specific gravity difference between the mixed liquid of the hydrophilic organic solvent and the preservation liquid and the hydrophilic organic solvent is smaller than the specific gravity difference between the preservation liquid and the hydrophilic organic solvent. This is probably because the replacement of the mixed solution and the hydrophilic organic solvent is performed more quickly than the replacement of the above.

[Second Embodiment]
The present embodiment includes the following (1) first substitution step, (2) second substitution step, and (3) third substitution step, and (3) a washing step and (4) as necessary. ) You may make it implement a drying process.

(1) First substitution step First, the prepared cut flowers are immersed in the above-mentioned hydrophilic organic solvent for a predetermined time (for example, about 4 to 24 hours), so that the tissue fluid in the cut flower tissue is hydrophilic. Replace with organic solvent.

(2) Second Substitution Step Next, the first mixed solution containing the hydrophilic organic solvent used in the first substitution step and the above-described preservative solution is added to the cut flowers dehydrated in the first substitution step. The container is immersed in a container for a predetermined time (for example, about 10 to 24 hours), and the hydrophilic organic solvent in the cut flower tissue is replaced with the first mixed solution.
When polypropylene glycol is used as the preservation solution, the content of polypropylene glycol in the first mixed solution is preferably 1% by volume to 80% by volume, more preferably 10% by volume to 50% by volume, and even more. Preferably, it is 20 volume% to 40 volume%.

(3) Third substitution step Next, the cut flower treated in the second substitution step is a mixed solution containing the hydrophilic organic solvent used in the second substitution step and the preservation solution, and the preservation solution The first mixed solution in the cut flower tissue is immersed in a container containing the second mixed solution whose content is higher than that of the first mixed solution for a predetermined time (for example, about 10 to 24 hours). Replace with.
When polypropylene glycol is used as the preservation solution, the content of polypropylene glycol in the second mixed solution is preferably 1% by volume to 80% by volume, more preferably 41% by volume to 80% by volume, and even more. Preferably, it is 60 volume% to 80 volume%.

In the present embodiment, if necessary, after the second substitution step and the third substitution step, the content of the preservation solution in the mixed solution is increased and further substitution step (fourth substitution step, second substitution step) is performed. 5 substitution step etc.) may be carried out (the content of the preservative in the first mixture used in the second substitution step <the content of the preservative in the second mixture used in the third substitution step) Content <Content of preservation solution in third mixed solution used in fourth substitution step <...).

(4) Washing step After the third replacement step, the surface of the cut flower is lightly rinsed with a washing solution described later to wash away the preservative solution adhering to the surface. In addition, this washing process removes the non-volatile organic solvent adhering to the cut flower surface in the second substitution process and the third substitution process, particularly when a non-volatile organic solvent is used as a preservation solution. It is effective for.
(Cleaning solution)
As the cleaning liquid that can be used in the present invention, any solvent can be used as long as it can wash off the preservative liquid adhering to the cut flower surface with a solvent other than water.
Examples of such cleaning liquid include, but are not limited to, the aforementioned hydrophilic organic solvents. Moreover, the hydrophilic organic solvent used as the cleaning liquid is not limited to the hydrophilic organic solvent used in the first substitution step, and other hydrophilic organic solvents other than the hydrophilic organic solvent are used as necessary. Also good.

(5) Drying process Finally, the cut flowers that have been rinsed in the above washing process are dried to remove the cleaning liquid remaining on the surface. The drying method is a temperature / humidity condition (for example, a room temperature of 35 ° C. and a humidity of 70) that does not affect the shape of the cut flowers (processed cut flowers) that have undergone the above-described processing steps, such as standing, air drying, and warm air blowing. % Or less) is desirable. The drying time can be arbitrarily set from several minutes to several weeks.

According to this embodiment, compared with the conventional method using the preservation solution as it is, the shape of the cut flower is easily maintained, and it is resistant to drying, and the cut flower can be stored more stably in a shape close to the original fresh flower. .
This is because the specific gravity difference between the mixed liquid of the hydrophilic organic solvent and the preservation liquid and the hydrophilic organic solvent is smaller than the specific gravity difference between the preservation liquid and the hydrophilic organic solvent. In addition to the fact that the replacement of the mixed liquid and the hydrophilic organic solvent is performed more quickly than the replacement of the above, in addition to increasing the content of the storage liquid in the mixed liquid used stepwise, a plurality of By performing the substitution step, it is considered that the substitution of the hydrophilic organic solvent and the preservation solution can be carried out more smoothly than in the conventional method.

[Other Embodiments]
1. The present invention is not limited to the above-described embodiment, and if necessary, a step of re-dying cut flowers by adding an artificial dye to the preservation solution may be added.
2. The present invention may be carried out by using a cut flower preservation kit (at least in a suitable container) comprising at least a hydrophilic organic solvent and a preservation solution.

Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.

[Comparative example]
Mixed ethanol prepared by mixing ethanol, normal propyl alcohol, and isopropyl alcohol as a hydrophilic organic solvent (ethanol 85.5 vol%, normal propyl alcohol 9.6 vol%, isopropyl alcohol 4.9 vol%) After carrying out the first substitution step using a conventional preserved solution, the second substitution step is carried out using polypropylene glycol (100% by volume) as a preservative solution, followed by washing with mixed ethanol and natural drying. It was tested whether the flower production method could be reproduced by mass production in a 100 L container.

As cut flowers, we use Turkish Kyoko (Symphony Marine, King of Blue Picot, Picco Rosa Pink Picot, Diamond Peach, Ecrosa White, Rosina Pink), Delphinium (Aurora Blue Imp, Triton Light Blue) and use these cut flowers on the basket. A 100 L container was used as a drug container, and 200 to 400 wheels per container were simultaneously processed.
The 1st substitution process was performed by using the above-mentioned mixed ethanol and immersing for 6 hours.
In the second substitution step, 100 L of polypropylene glycol was added using the same type of container as the first substitution step, and the cut flowers subjected to the first substitution step were transferred to a container containing polypropylene glycol and immersed for 15 hours.
After the second substitution step, the cut flowers were washed several times with the above mixed ethanol (washing step) and naturally dried indoors (drying step).

(Results and discussion)
Immediately after the second substitution step, alcohol leaching was clearly seen from within the petals, and as leaching progressed, the flower size was reduced by up to about 40%. The petal tip curled.
In the washing process, it took 5 minutes or more to wash away the polypropylene glycol attached to the flower base. However, the tip of the petal was already overwashed in about 20 seconds, and atrophy started immediately after drying and did not become a product.
These problems are expected to occur because the specific gravity difference from the hydrophilic organic solvent (hydrophilic organic solvent: polypropylene glycol = 1.004) is increased by using 100% by volume of polypropylene glycol. did it. Therefore, it was considered that there is a high possibility that this can be avoided by reducing the specific gravity difference (that is, using a mixture of polypropylene glycol and mixed ethanol).

[Example 1] Examination of hydrophilic organic solvent applicable to the present invention As a cut flower, diamond peach of Turkish Falcon and aurora blue imp of delphinium were used, and various hydrophilic organic solvents shown in Table 1 below were used. After 4 hours of immersion (first substitution step), the dehydrated state, petal hardness, stem hardness, petal thickness, and color change were compared with fresh flowers.
(Results and discussion)
Preservation of the dye was observed in all the hydrophilic organic solvents shown in Table 1 below.
In Example 2 and Example 3 described later, the third mixed ethanol (ethanol 85.5% by volume, normal propyl alcohol 9.6% by volume, isopropyl alcohol 4.9% by volume) was used. .

[Example 2] Example of the first embodiment From the result of the comparative example, the second substitution step is not performed only with polypropylene glycol, but the specific gravity difference is obtained by mixing the third mixed ethanol and polypropylene glycol of Example 1 above. Based on the knowledge that it is effective to reduce the concentration, the state when the concentration of polypropylene glycol in the mixed liquid of the third mixed ethanol and polypropylene glycol is 30% by volume, 50% by volume, 70% by volume A comparative test was performed.
As a cut flower, Turkish Kyocera's Picco Rosa Pink Picot, Minimoni Blue Picot and Rosina Blue were used to perform the first substitution step by immersing in 3rd mixed ethanol for 4 hours. After performing the second substitution step by immersing in the mixed liquids 1 to 3 having a polypropylene glycol concentration of 15 hours for 15 hours, washing and drying were performed.
In addition, what performed the 2nd substitution process only with polypropylene glycol was prepared as control. The results are shown in Table 2 below. The symbols (+ and −) in Table 2 mean the magnitude of cut flower shape abnormalities (minimization, curl (warping), atrophy after drying), and the more +, the more Large (ie, (−) <(+ −) <(+) <(++) <(++++)).

(Results and discussion)
In the mixed solution 1 (polypropylene glycol concentration: 30% by volume), neither the petal curl nor the whole flower dwarf occurred. However, after drying, the entire flower has dried up.
In the mixed solution 2 (polypropylene glycol concentration: 50% by volume), the petal curl was observed, but the flower size was not reduced. However, after drying, it was dried like the liquid mixture 1.
In mixed solution 3 (polypropylene glycol concentration: 70% by volume), the curl of the petals and the dwarf of the whole flower occurred in the same manner as in the control, and the result was the same as in the control. It was somewhat improved.
Cut flowers that have undergone the second substitution process using liquid mixtures 1 to 3 are more effective in improving the shape of the cut flowers than the control (conventional method using the preservation solution as it is). Was found.
In particular, the liquid mixture 1 (polypropylene glycol concentration: 30% by volume) is good for maintaining the shape of cut flowers, and the polypropylene glycol concentration must be higher than 50% by volume to improve the storage condition after drying. I understood.

[Example 3] Example of the second embodiment From the results shown in the above Example 2, the specific gravity difference between the hydrophilic organic solvent and the mixed solution is within 0.08, but there is no large diffusion / substitution ability. It was suggested that when the specific gravity difference was 0.1 or more, uneven diffusion from the inside of the petal to the outside of the petal was likely to occur.
For this reason, it was considered that sufficient substitution proceeds without breaking the shape by setting the difference in specific gravity within 0.08 and moving the polypropylene glycol concentration of the mixed solution from 30 vol% to a thick solution stepwise.
Two cut varieties of Rosina blue, Piccolosa pink picoty, and Minimoni blue picoty were used as cut flowers, and test groups 1 to 4 shown below were set.

(Test Zone 1)
In test group 1, the cut flowers were treated according to the following steps.
1. First substitution step: The cut flowers were immersed in the third mixed ethanol for 4 hours.
2. Second substitution step: The cut flowers subjected to the first substitution step were immersed in the first mixed liquid (third mixed ethanol 70% by volume, polypropylene glycol 30% by volume) for 3 hours.
3. Third substitution step: The cut flowers subjected to the second substitution step were immersed in a second mixed liquid (third mixed ethanol 50% by volume, polypropylene glycol 50% by volume) for 21 hours.
4). Washing step: The cut flowers subjected to the third replacement step were washed for 10 seconds using the third mixed ethanol.
5). Drying step: The cut flowers subjected to the washing step were dried by forcedly circulating air with a stirring fan in a drying room maintaining a room temperature of 35 ° C. and a humidity of 70% or less.

(Test Zone 2)
In test group 2, the cut flowers were treated according to the following steps.
1. First substitution step: The cut flowers were immersed in the third mixed ethanol for 4 hours.
2. Second substitution step: The cut flowers subjected to the first substitution step were immersed in the first mixed liquid (third mixed ethanol 70% by volume, polypropylene glycol 30% by volume) for 3 hours.
3. Third substitution step: The cut flowers subjected to the second substitution step were immersed in the second mixed liquid (third mixed ethanol 50% by volume, polypropylene glycol 50% by volume) for 4 hours.
4). Fourth substitution step: Cut flowers subjected to the third substitution step were immersed in a third mixed solution (30% by volume of third mixed ethanol, 70% by volume of polypropylene glycol) for 17 hours.
5). Washing step: The cut flowers subjected to the fourth substitution step were washed with the third mixed ethanol for 30 seconds (10 seconds was washed three times).
6). Drying step: The cut flowers subjected to the washing step were dried by forcedly circulating air with a stirring fan in a drying room maintaining a room temperature of 35 ° C. and a humidity of 70% or less.

(Test Zone 3)
In test group 3, the cut flowers were treated according to the following steps.
1. First substitution step: The cut flowers were immersed in the third mixed ethanol for 4 hours.
2. Second substitution step: The cut flowers subjected to the first substitution step were immersed in the first mixed liquid (third mixed ethanol 70% by volume, polypropylene glycol 30% by volume) for 3 hours.
3. Third substitution step: The cut flowers subjected to the second substitution step were immersed in the second mixed liquid (third mixed ethanol 50% by volume, polypropylene glycol 50% by volume) for 4 hours.
4). Fourth substitution step: Cut flowers subjected to the third substitution step were immersed in a third mixed solution (40% by volume of third mixed ethanol, 60% by volume of polypropylene glycol) for 17 hours.
5). Washing step: The cut flowers subjected to the fourth substitution step were washed with third mixed ethanol for 20 seconds (twice for 10 seconds).
6). Drying step: The cut flowers subjected to the washing step were dried by forcedly circulating air with a stirring fan in a drying room maintaining a room temperature of 35 ° C. and a humidity of 70% or less.

(Test Zone 4)
In test group 4, the cut flowers were treated according to the following steps.
1. First substitution step: The cut flowers were immersed in the third mixed ethanol for 4 hours.
2. Second substitution step: The cut flowers subjected to the first substitution step were immersed in the first mixed liquid (third mixed ethanol 70% by volume, polypropylene glycol 30% by volume) for 3 hours.
3. Third substitution step: The cut flowers subjected to the second substitution step were immersed in a second mixed liquid (third mixed ethanol 40% by volume, polypropylene glycol 60% by volume) for 21 hours.
4). Washing step: The cut flowers subjected to the third replacement step were washed with the third mixed ethanol for 20 seconds (twice for 10 seconds).
5). Drying step: The cut flowers subjected to the washing step were dried by forcedly circulating air with a stirring fan in a drying room maintaining a room temperature of 35 ° C. and a humidity of 70% or less.

(Control area)
In the control group, the cut flowers were treated according to the following steps.
1. First substitution step: The cut flowers were immersed in the third mixed ethanol for 4 hours.
2. Second substitution step: Cut flowers subjected to the first substitution step were immersed in 100% by volume of polypropylene glycol for 15 hours.
3. Washing step: The cut flower subjected to the second replacement step was washed with the third mixed ethanol, but was not successful.
4). Drying step: The cut flowers subjected to the washing step were dried by forcedly circulating air with a stirring fan in a drying room maintaining a room temperature of 35 ° C. and a humidity of 70% or less.
The results are shown in Table 3 below. The symbols (+ and −) in Table 3 mean the magnitude of cut flower shape abnormality (minimization, curl (curving), post-drying atrophy), and the more +, the greater the degree. Large (ie, (−) <(+ −) <(+) <(++) <(++++)).

(Results and discussion)
In all of the test plots 1 to 4, cut flower dwarfing and petal curl were less than in the control plot. Only Test Zone 3 was slightly smaller than the other Test Zones. During cleaning, test group 1 was the easiest to clean, and test group 2 took three times as much cleaning time as test group 1. Test area 3 and test area 4 required more cleaning time than test area 1.
The control area could not be cleaned well.
As described above, in any of the test groups 1 to 4, the shape of the cut flower is easily maintained as compared to the control group (conventional method using the preservation solution as it is), and the resistance to drying is equal to or higher than that of the control group. The result was that it could have

As described above, the present invention is useful when storing cut flowers and manufacturing processed cut flowers, and is suitable for maintaining the shape of cut flowers stably over a long period of time.

Claims

A method for preserving a cut flower by replacing the tissue fluid in the cut flower with a preservative solution comprising the following steps:
1. A first replacement step of replacing the tissue fluid in the cut flowers with a hydrophilic organic solvent;
2. The hydrophilic organic solvent substituted with the tissue fluid in the cut flowers contains a storage solution that is compatible with the hydrophilic organic solvent and is a non-volatile or hardly volatile organic solvent, and the hydrophilic organic solvent A second substituting step of substituting with the mixed liquid
A method for preserving cut flowers.
A method for preserving a cut flower by replacing the tissue fluid in the cut flower with a preservative solution comprising the following steps:
1. A first replacement step of replacing the tissue fluid in the cut flowers with a hydrophilic organic solvent;
2. The hydrophilic organic solvent substituted with the tissue fluid in the cut flowers contains a storage solution that is compatible with the hydrophilic organic solvent and is a non-volatile or hardly volatile organic solvent, and the hydrophilic organic solvent A second substituting step for substituting with the first liquid mixture;
3. The first mixed liquid in the cut flowers is a mixed liquid containing the hydrophilic organic solvent and the preservative liquid, and the second mixed liquid having a larger content of the preservative liquid than the first mixed liquid is replaced. A third replacement step;
A method for preserving cut flowers.
The method for preserving cut flowers according to claim 1 or 2, wherein the hydrophilic organic solvent contains at least one liquid selected from the group consisting of ethanol, normal propyl alcohol, and isopropyl alcohol.
The method for preserving cut flowers according to any one of claims 1 to 3, wherein the preservative solution is polypropylene glycol.
The method for preserving cut flowers according to claim 4, wherein the content of polypropylene glycol in the mixed solution is 1% by volume to 80% by volume.
The content of polypropylene glycol in the first mixed solution is 1% by volume to 40% by volume, and the content of polypropylene glycol in the second mixed solution is 41% by volume to 80% by volume. To save the cut flowers.
The method for preserving cut flowers according to any one of claims 1 to 6, further comprising a step of rinsing the surface of the cut flowers with a hydrophilic organic solvent other than the hydrophilic organic solvent or the hydrophilic organic solvent.
A cut flower storage kit that can be used in the cut flower storage method according to any one of claims 1 to 7 and includes at least the hydrophilic organic solvent and the storage solution.
A method for producing a processed cut flower by replacing the tissue fluid in a cut flower with a preservation solution comprising the following steps:
1. A first replacement step of replacing the tissue fluid in the cut flowers with a hydrophilic organic solvent;
2. The hydrophilic organic solvent substituted with the tissue fluid in the cut flowers contains a storage solution that is compatible with the hydrophilic organic solvent and is a non-volatile or hardly volatile organic solvent, and the hydrophilic organic solvent A second substituting step of substituting with the mixed liquid
A method for producing a processed cut flower comprising:
A method for producing a processed cut flower by replacing the tissue fluid in a cut flower with a preservation solution comprising the following steps:
1. A first replacement step of replacing the tissue fluid in the cut flowers with a hydrophilic organic solvent;
2. The hydrophilic organic solvent substituted with the tissue fluid in the cut flowers contains a storage solution that is compatible with the hydrophilic organic solvent and is a non-volatile or hardly volatile organic solvent, and the hydrophilic organic solvent A second substituting step for substituting with the first liquid mixture;
3. The first mixed liquid in the cut flowers is a mixed liquid containing the hydrophilic organic solvent and the preservative liquid, and the second mixed liquid having a larger content of the preservative liquid than the first mixed liquid is replaced. A third replacement step;
A method for producing a processed cut flower comprising:
The method for producing a processed cut flower according to any one of claims 9 and 10, wherein the hydrophilic organic solvent contains at least one liquid selected from the group consisting of ethanol, normal propyl alcohol, and isopropyl alcohol.
The process for producing a processed cut flower according to any one of claims 9 to 11, wherein the preservation solution is polypropylene glycol.
The method for producing a processed cut flower according to claim 12, wherein the content of polypropylene glycol in the mixed solution is 1% by volume to 80% by volume.
The polypropylene glycol content in the first mixed solution is 1 to 40% by volume, and the polypropylene glycol content in the second mixed solution is 41 to 80% by volume. Method of processing cut flowers.
The method for producing a processed cut flower according to any one of claims 9 to 14, further comprising a step of rinsing the surface of the cut flower with a hydrophilic organic solvent other than the hydrophilic organic solvent or the hydrophilic organic solvent.
A processed cut flower produced by the method for producing a processed cut flower according to any one of claims 9 to 15.