JP2000169302A - Agent for holding plant freshness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an agent for holding plant freshness which can exert a fresh holding effect irrespective of the kinds of cut flowers and vegetables and shows high safety by including a specific antioxidant and a specific surfactant as essential components. SOLUTION: This agent for holding plant freshness is obtained by including (A) an antioxidant capable of inhibiting ethylene biosynthesis or controlling ethylene action and (B) at least one kind of surfactant selected from sugar derivative-type surfactants and sugar alcohol derivative-type surfactants as essential components. It is favorable that the component B is a surfactant having a structure obtained by forming a glycoside-linkage or an ester-linkage between a sugar or sugar alcohol and a hydrophobic group. Further, it is favorable that the weight ratio of the components A to B is 0.0002-1000. The agent for holding plant freshness can be used as a powder preparation containing the components A and B or the like, a concentrated aqueous liquid preparation containing the components A and B in high concentrations or an aqueous liquid preparation used as it is by means of immersion, spray or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plant freshness preserving agent for cut flowers, vegetables and the like.

[0002]

2. Description of the Related Art Conventionally, methods for extending the life of cut flowers and maintaining freshness include a method of draining in fresh water,
Crushing or baking cuts to improve watering, adding nutrients such as sugars to water, preservatives and fungicides to prevent the growth of bacteria and mold, substances leaking from plants, metabolism due to the generation of bacteria Various methods and methods have been devised, such as a method of adding a colloidal particle aggregating precipitant such as aluminum sulfate and a method of adding a chemical agent such as silver thiosulfate to suppress the biosynthesis of ethylene for the purpose of aggregating colloidal particles such as substances. Various cut flower life-promoting agents are commercially available.

[0003]

However, in the above-mentioned known methods, a sufficient effect of maintaining freshness of cut flowers and vegetables cannot be obtained, and the types of cut flowers and vegetables exhibiting the effect are limited, or the usage is limited. It has various problems, such as being complicated and having concerns about the safety of the environment and humans.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a fresh flower and vegetable freshness preserving agent which exhibits a freshness preserving effect and is highly safe regardless of various kinds of cut flowers and vegetables. The purpose is to:

[0005]

Means for Solving the Problems The present invention is selected from an aging inhibitor (a) having an ability to inhibit ethylene biosynthesis or an ability to inhibit ethylene action, a sugar derivative-type surfactant and a sugar alcohol derivative-type surfactant. The present invention relates to a plant freshness preserving agent comprising one or more surfactants (b) as an essential component.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The antiaging agent (a) used in the present invention is not limited as long as it has an ethylene biosynthesis inhibiting ability or an ethylene action inhibiting ability and is a component that prevents plant aging. , AVG (aminoethoxyvinylglycine), AOA (aminooxyacetic acid hemihydrochloride), PAC
ME (isopropylidine-aminooxyacetic acid-2-methoxy-2-oxoethyl ester), AIB (aminoisobutyric acid), DPSS [1,1-dimethyl-4- (phenylsulfonyl) semicarbazide], PPOH (cispropenylphosphonic acid) , STB (sodium tetraborate),
Allocoronaminic acid, aminotriazole, phenanthroline, DACP (diazocyclopentadiene), AIT
C (allyl isothiocyanate), NBD (2,5-norbornadiene), MCP (1-methylcyclopropene), ethionine, STS (silver thiosulfate), silver chloride, amino acid silver, silver benzoate, silver lactate, silver nitrate, Silver compounds such as zeolite silver, silica gel silver, and hydroxyapatite silver are exemplified.

[0007] The sugar derivative type surfactant and sugar alcohol derivative type surfactant (b) used in the present invention may be any type as long as it has a sugar or sugar alcohol skeleton in the molecule and has a surface activity. Is not limited and may be any.

[0008] Examples of those having a structure in which a hydrophobic group is ester-bonded to sugar or sugar alcohol include sorbitan fatty acid ester, polyoxyalkylene sorbitan fatty acid ester, sucrose fatty acid ester, sorbite fatty acid ester, polyoxyalkylene sorbit fatty acid ester,
Polyglycerin, polyglycerin fatty acid ester, glycerin fatty acid ester, polyoxyalkylene glycerin fatty acid ester and the like can be mentioned.

Further, those having a structure in which a hydrophobic group is glycosidically bonded to a sugar or a sugar alcohol include alkyl glycosides, alkyl polyglycosides, polyoxyalkylene alkyl (poly) glycosides, and alkyl (sulfated alkyl (poly) glycosides). Poly) glycoside sulfate, phosphorylated alkyl (poly) glycoside, glyceryl etherified alkyl (poly) glycoside, sulfosuccinate esterified alkyl (poly) glycoside, glyceryl esterified alkyl (poly) glycoside, carboxyalkylated alkyl (poly) glycoside, Cationized alkyl (poly) glycosides and betainated alkyl (poly) glycosides are exemplified.

As the component (b), those having a structure in which a hydrophobic group is amide bonded to sugar or sugar alcohol, for example, fatty acid amides of glucose and fructose can also be used.

As the component (b), sorbitan fatty acid esters, alkyl polyglycosides and sucrose fatty acid esters are preferred. The sorbitan fatty acid ester preferably has a high monoester ratio, and is preferably HLB (Hydrophilophil).
ic Lypophilic Balance) is preferably in the range of 3 to 10.
The acyl group constituting the hydrophobic group may be saturated, unsaturated, linear or branched, but preferably has 8 to 18 carbon atoms. The alkyl polyglycoside preferably has an average degree of sugar condensation of 1.1 to 5.0, and more preferably 1.1 to 2.0.
Is more preferable. Further, those having a glucose skeleton as the sugar skeleton and having an average degree of sugar condensation of 1.1 to 2.0 are preferable. The hydrophobic group may be saturated, unsaturated, linear, or branched, but preferably has 8 to 18 carbon atoms, and more preferably has 8 to 14 carbon atoms. The sucrose fatty acid ester is a mixture of mono, di, tri, and polyester (tetraester or more), but has a high monoester and diester content, a low polyester content, and an HLB of 4-1.
It is preferably in the range of 8. The acyl group constituting the hydrophobic group may be saturated, unsaturated, linear or branched, but preferably has 8 to 18 carbon atoms.

The weight ratio of the component (a) to the component (b) is (a) / (b) = 0.002-1000,
Preferably 0.001 to 50, more preferably 0.01
10 to 10.

Although the plant freshness preserving agent of the present invention can be expected to be sufficiently effective only with the component (a) and the component (b), it also has a known method for preserving the freshness of cut flowers and vegetables or a life-extending effect. Components applied to the agent, such as saccharides, bactericides / preservatives, plant hormones, colloid-precipitating coagulants, and the like can be added as necessary.

As sugars, glucose, xylose,
Arabinose, ribose, galactose, fructose, mannose, rhamnose, inositol, sorbitol, mannitol, xylitol, glycerol, erythritol, glucosamine, monosaccharides such as galactosamine, sucrose, trehalose, trehalulose, maltose, cellobiose, palatinose, lactose, raffinose, raffinose , Xylo-oligosaccharides, fructooligosaccharides, galactooligosaccharides, maltooligosaccharides,
Oligosaccharides such as inulooligosaccharides and nectar oligosaccharides, and polysaccharides such as agarose, amylose, glycogen, cellulose, dextrin, inulin, mannan, chitin and the like can be mentioned. It is preferable that two or more of these saccharides are blended.

[0015] As disinfectant components, sodium hypochlorite, copper sulfate, 8-hydroxyquinoline, ethanol, isopropanol, methyl (or ethyl, propyl, butyl) parahydroxybenzoate, proxel (trade name, Nagase Kasei) , Bronopol (trade name, Nagase & Co., Ltd.), cationic surfactants and the like. Examples of the cationic surfactant include alkyl trimethyl ammonium chloride, dialkyl dimethyl ammonium chloride, benzalkonium chloride, polyoxyethylene monoalkyl monomethyl ammonium chloride, and the like.

As plant hormones, natural or synthetic auxins such as IAA (indole-3-acetic acid), 2,4-dichlorophenoxyacetic acid, 2,6-dichlorobenzoic acid, naphthaleneacetic acid, zeatin, kinetin,
Examples include natural or synthetic cytokinins such as benzylaminobenzimidazole and benzyladenine, and brassinosteroids such as gibberellins, brassinolide and castosterone.

Further, for the purpose of aggregating colloid particles such as substances leaking from plants and metabolites generated by bacteria, aluminum sulfate, sodium aluminate, polyaluminum chloride, ammonium alum, aluminum lactate,
Aluminum compounds such as aluminum silicate, calcium chloride, combined use of calcium chloride and phosphoric acid, and polymer aggregates include neutralized salts of dimethylaminoethyl methacrylate, Mannich reactant of polyacrylamide, Hoffmann rearrangement reactant of polyacrylamide , An alkylamine / epichlorohydrin condensate, polyvinylamine, chitosan, and the like.

Further, amino acids and inorganic nutrients which can be a nutrient source of plants may be added.

The plant freshness preserving agent of the present invention may contain one or more other surfactants. The following are examples of the surfactant used in the present invention.

Examples of the nonionic surfactant include polyoxyalkylene fatty acid ester, resin acid ester, polyoxyalkylene resin acid ester, polyoxyalkylene alkyl ether, polyoxyalkylene alkyl phenyl ether, and silicone surfactant. Can be

Examples of the anionic surfactant include carboxylic acid type, sulfonic acid type, sulfate ester type and phosphate ester type surfactants. Examples of the carboxylic acid surfactant include fatty acids having 6 to 30 carbon atoms or salts thereof,
Polycarboxylic acid or its salt, polyoxyalkylene alkyl ether carboxylic acid or its salt, polyoxyalkylene alkyl amide ether carboxylic acid or its salt, rosin acid or its salt, dimer acid or its salt, polymer acid or its salt, toll Oil fatty acids or salts thereof are exemplified. Examples of the sulfonic acid-based surfactant include alkylbenzenesulfonic acid or a salt thereof, alkylsulfonic acid or a salt thereof, alkylnaphthalenesulfonic acid or a salt thereof,
Examples include naphthalenesulfonic acid or a salt thereof, diphenylethersulfonic acid or a salt thereof, a condensate of alkylnaphthalenesulfonic acid or a salt thereof, a condensate of naphthalenesulfonic acid or a salt thereof, and the like. Examples of the sulfate-based surfactant include alkyl sulfates or salts thereof, polyoxyalkylene alkyl sulfates or salts thereof, polyoxyalkylene alkyl phenyl ether sulfates or salts thereof, tristyrenated phenol sulfates or salts thereof, and polyoxyalkylene alkyl sulfates or salts thereof. Examples thereof include alkylenedistyrenated phenol sulfate or a salt thereof. Examples of the phosphate-based surfactant include alkyl phosphates or salts thereof, alkylphenyl phosphates or salts thereof, polyoxyalkylene alkyl phosphates or salts thereof, and polyoxyalkylene alkylphenyl phosphates or salts thereof. Is mentioned. As salts of these compounds, for example, metal salts (Na, K, Ca, Mg, Zn
Etc.), ammonium salts, alkanolamine salts, aliphatic amine salts and the like.

Examples of the amphoteric surfactant include amino acids, betaines, imidazolines, and amine oxides. Examples of the amino acid system include acyl amino acid salts, acyl sarcosine salts, acyloylmethylaminopropionates, alkylaminopropionates, and acylamidoethylhydroxyethylmethylcarboxylates. Examples of the betaine include alkyl dimethyl betaine, alkyl hydroxyethyl betaine, acylamidopropyl hydroxypropyl ammonia sulfobetaine, acylamidopropyl hydroxypropyl ammonia sulfobetaine, ricinoleic acid amidopropyl dimethyl carboxymethyl ammonia betaine, and the like. Examples of the imidazoline-based compounds include alkylcarboxymethylhydroxyethyl imidazolinium betaine and alkylethoxycarboxymethylimidazolium betaine. Examples of the amine oxides include alkyldimethylamine oxide, alkyldiethanolamine oxide, and alkylamidopropylamine oxide.

The plant freshness-preserving agent of the present invention comprises a powder preparation containing an anti-aging agent (a), a sugar derivative-type surfactant, a sugar alcohol derivative-type surfactant (b), and the like;
A concentrated aqueous liquid preparation containing the component and the component (b) at a high concentration or an aqueous liquid preparation to be used as it is can be obtained.

When a powder preparation or a concentrated liquid preparation is used by mixing them with water, the component (a) should be 0.00
Component (b) is 0.0001 to 0.1% by weight, more preferably 0.0005 to 0.05% by weight, particularly 0.0005 to 0.05% by weight, so that the content is 0.01 to 0.5% by weight, particularly 0.001 to 0.1% by weight. 0.00
It is blended to be 1 to 0.01% by weight. Further, if necessary, the phytohormone may be used in an amount of 0.00001 to 0.05% by weight, particularly 0.5 to 5% by weight.
The amount of the colloidal particle aggregating and precipitating agent is from 0.0001 to 0.5% by weight, especially from 0.0001 to 0.01% by weight.
Each component is blended singly or in combination so as to be 0.5% by weight. When using an aqueous liquid preparation to be used as is,
Each component is dissolved or dispersed in water to have the above concentration.

It is also effective to add the anti-aging agent of the present invention and a sugar derivative or sugar alcohol derivative type surfactant-containing plant freshness preserving agent to commercially available plant freshness preserving agents and life-extending agents conventionally used. It is. As the addition method, the plant freshness preserving agent of the present invention can be added in the form of an aqueous solution or a powder.

As a method of using the plant freshness preserving agent of the present invention, the cut portion (cut portion) or the whole of cut flowers and vegetables is used to maintain the plant anti-aging agent and the sugar derivative or sugar alcohol derivative type surfactant-containing plant freshness preserving agent of the present invention. A method of immersing the plant freshness retaining agent aqueous solution of the present invention into cut flowers and vegetables, a nonwoven fabric of the plant freshness retaining agent aqueous solution of the present invention,
There is a method in which a suitable absorbent such as fiber, paper product, urethane, cotton, and water-absorbing polymer is absorbed to wrap the cut flowers and vegetables.

Although the cut flowers and vegetables to which the plant freshness preserving agent of the present invention can be applied are not limited, any cut flowers can be used.
For example, rose, carnation, lily, orchid, gypsophila, eustoma, gerbera, chrysanthemum, solid duster,
Sakura, peach, maki, alstroemeria, hydrangea and the like can be mentioned. Examples of vegetables include leafy vegetables such as Chinese cabbage, cabbage, spinach, lettuce, komatsuna, and chrysanthemum, fruit vegetables such as cucumber, tomato, eggplant, pepper, and strawberry, and root vegetables such as radish, burdock, and carrot.

[0028]

Example 1 <Preparation of Freshness Preserving Agent> Freshness preserving agents having the compositions shown in Table 1 were prepared (products of the present invention 1-1 to 1-18 and comparative products 1-1 to 1-1).
1-9). The remainder in Table 1 is tap water.

[0029]

[Table 1]

(Note) STS (silver thiosulfate): Coat fresh K20C,
Nitto Co., Ltd. ・ Aminoethoxyvinylglycine: Florish,
Tomen Co., Ltd. ・ Crisal: commercial plant freshness preservative, Cryzar Japan ・ Repeat: commercial plant freshness preservative, manufactured by Taisho Pharmaceutical ・ Desyl polyglucoside: mydol 10 (condensation degree 1.
3, alkyl carbon number 9-11), manufactured by Kao Corporation ・ Sucrose fatty acid ester: DK ester S-L18A
(Fatty acid; lauric acid), manufactured by Daiichi Kogyo Seiyaku, monoester / di, triester = 70/30. Sorbitan fatty acid ester: Reodol SP-L10
(Fatty acid; coconut oil fatty acid), manufactured by Kao Corporation, HLB =
8.6.

<Test for maintaining freshness of cut flowers> Product 1-1 of the present invention
1-18 and comparative products 1-1-1-9, and freshness of commercially available cut flowers [chrysanthemum (variety: Beni Fan), carnation (variety: Juliet), rose (variety Valerie)] for each of them A retention test was performed. As the cut flowers, those having the same growth state and freshness state as possible were selected, and the stems were cut with sharp scissors in water before use. The growth conditions were as follows.
C., humidity 60, and illuminance 5000lux.
The freshness retention evaluation was visually performed, and the number of days from the state of petal dying, the occurrence of bent neck, the state of foliage dying, etc., to the point of not being able to withstand ornamentation was taken as the number of days to stay. The results are shown in Table 2. As compared with the comparative product, the product of the present invention showed a longer-lasting effect of the flower in all the test systems, and the sugar derivative type surfactant and the sugar alcohol derivative type surfactant (b)
A freshness retaining effect was observed.

[0032]

[Table 2]

Example 2 The same test as in Example 1 was conducted using the product of the present invention and the comparative product shown in Table 3. The results are shown in Table 4. As compared with the comparative product, the product of the present invention showed an increase in the life of flowers in all test systems, indicating that the antioxidant (a), the sugar derivative type surfactant, the sugar alcohol The effect of maintaining the freshness of the derivative type surfactant (b) was observed. The silver thionitrate, decyl polyglucoside, and sucrose fatty acid ester were the same as in Example 1.

[0034]

[Table 3]

[0035]

[Table 4]

[0036]

According to the present invention, a plant freshness preserving agent which exhibits an excellent freshness preserving effect on various cut flowers and vegetables and is highly safe can be obtained.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaharu Hayashi 1334 Minato, Wakayama City, Wakayama Prefecture Kao Corporation Research Institute (72) Inventor Kazuhiko Kurita 1334 Minato, Wakayama City, Wakayama Prefecture Kao Research Institute F-term (reference) 4H011 BB04 BB06 BB09 BB11 BB14 BB17 BB18 BB19 CB10 CB11 CD03 DH10

Claims (4)

[Claims] 1. An anti-aging agent (a) having an ethylene biosynthesis inhibiting ability or an ethylene action inhibiting ability, and one or more surfactants selected from a sugar derivative-type surfactant and a sugar alcohol derivative-type surfactant ( b) a plant freshness-maintaining agent comprising: 2. The plant freshness preserving agent according to claim 1, wherein the component (b) is a surfactant having a structure in which a hydrophobic group is glycoside-linked to sugar or sugar alcohol. 3. The plant freshness preserving agent according to claim 1, wherein the component (b) is a surfactant having a structure in which a hydrophobic group is ester-bonded to sugar or sugar alcohol. 4. The weight ratio of the component (a) to the component (b) is as follows:
The plant freshness preserving agent according to any one of claims 1 to 3, wherein (a) / (b) is 0.0002 to 1,000.