JP3537711B2 - Plant freshener - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a freshness preserving agent for collected plants, particularly plants such as cut flowers and vegetables.

[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 / bactericides to prevent the growth of bacteria and mold, substances leaking from plants, metabolism by generation of bacteria Various methods and methods have been devised, such as a method of adding a colloid particle aggregating precipitant such as aluminum sulfate and a method of adding a chemical such as silver thiosulfate to suppress the biosynthesis of ethylene for the purpose of aggregating colloid particles such as substances. Various cut flower life prolonging agents are commercially available.

[0003]

However, in the above-mentioned known methods, a sufficient effect of maintaining the 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.

Japanese Patent Application Laid-Open No. 6-336401 discloses a technique in which a flavor glycoside enhances the aroma of cut flowers.
No. 330502 only discloses a technique for maintaining freshness of cut flowers and the like using trehalose or a salt thereof, but does not disclose a surfactant or the like.

The present invention has been made in view of the above problems, and provides an agent for preserving freshness of a plant such as a harvested plant which exhibits a freshness preserving effect and is highly safe irrespective of the type of the harvested plant. Aim.

[0006]

According to the present invention, there is provided one or more saccharides (a) selected from monosaccharides, oligosaccharides and polysaccharides,
It contains one or more surfactants (b) selected from sugar derivative surfactants and sugar alcohol derivative surfactants, and the weight ratio of (b) / (a) is 0.00001 to 2.
0 relates to a plant freshness preserving agent.

[0007] The plant freshness preservative of the present invention is suitable for harvested plants. Examples of collected plants include cut flowers, vegetables, cut leaves, and flowers and trees. The plant freshness-preserving agent of the present invention is suitably used for maintaining freshness of cut flowers and vegetables. In addition, a plant that has not been collected, such as a rooted plant, is also kept fresh by the plant freshness retaining agent of the present invention.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The one or more saccharides (a) selected from the monosaccharides, oligosaccharides and polysaccharides used in the present invention may be any saccharides serving as a nutrient source or energy source for cut flowers and vegetables. If not limited, for example, 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, cyclodextrin, xylo-oligosaccharides, oligosaccharides And oligosaccharides such as galactooligosaccharides, maltooligosaccharides, inulooligosaccharides, and nectar oligosaccharides, and polysaccharides such as agarose, amylose, glycogen, cellulose, dextrin, inulin, mannan, and chitin. One or more of these sugars are blended in the plant freshness preserving agent, and preferably two or more are blended.

The sugar derivative-type surfactant and sugar alcohol derivative-type surfactant (b) used in the present invention are those having a sugar or sugar alcohol skeleton in the molecule and having a surfactant property. Is not limited and may be any.

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,
Examples thereof include polyglycerin, polyglycerin fatty acid ester, glycerin fatty acid ester, and polyoxyalkylene glycerin fatty acid ester.

Further, those having a structure in which a hydrophobic group is glycoside-linked to sugar or sugar alcohol include alkyl glycosides, alkyl polyglycosides, polyoxyalkylene alkyl (poly) glycosides, and alkyl (poly) glycosides obtained by sulfating 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.

Further, as the component (b), those having a structure in which a hydrophobic group is amide-bonded to sugar or sugar alcohol, for example, sugar-based fatty acid amides such as fatty acid amides of glucose and fructose can also be used. Further, those having a structure in which a hydrophobic group is amide-bonded to a sugar or sugar alcohol having an amino group, for example, a sugar-based fatty acid amide such as a fatty acid amide of N-methylglucamine can be used. Examples of the saccharide-based fatty acid amide include a compound represented by the formula (1) R ¹ —CO—NR ² X ¹ (1) (wherein, R ¹ is a linear or branched alkyl group, alkenyl group or alkylphenyl having 5 to 17 carbon atoms) R ² is hydrogen, a linear or branched alkyl or alkenyl group having 1 to 18 carbon atoms, — (CH ₂ CH (R ³ ) O)
_c -H (wherein, R ³ is hydrogen or a methyl group, c is 0
Is a number from 10 to 10. _{), - CH 2 CH 2 OH} , -CH 2 C
H (OH) CH ₃ or _{-CH 2 CH 2 CH 2 OH,} X 1
Is a polyhydroxyalkyl group consisting of a sugar residue having 4 to 30 carbon atoms. ) Can be preferably used.

In the formula (1), R ¹ represents 5 carbon atoms.
A group derived from capric acid, caprylic acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, among the linear or branched alkyl, alkenyl, or alkylphenyl groups of ^{1 to} 17 And particularly preferably a group derived from capric acid and lauric acid.

Specific examples of R ² include hydrogen, a methyl group,
Ethyl group, n-propyl group, isopropyl group, n-butyl group, t-butyl group, n-hexyl group, octyl group,
-An ethylhexyl group, a decyl group, a dodecyl group, a stearyl group, an isostearyl group or a polyethylene glycol group or a polypropylene glycol group having a polymerization degree of 2 to 10, a 2-hydroxyethyl group, a 2-hydroxypropyl group, a 3-hydroxypropyl group, or the like. Can be mentioned. Among them, preferred are hydrogen, methyl, ethyl, 2-hydroxyethyl, 2-hydroxypropyl, and 3-hydroxypropyl.

The polyhydroxyalkyl group comprising a sugar residue having 4 to 30 carbon atoms of X ^{1 has} a carbon number of 4 having a glycosidic bond with a mono-, di- or oligosaccharide group.
From 7 to 7 polyhydroxyalkyl groups.

As the component (b), sorbitan fatty acid esters, alkyl polyglycosides, and sucrose fatty acid esters are preferable.

The sorbitan fatty acid ester preferably has a high ratio of monoesters, and is preferably HLB (Hydrophilic).
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, more preferably 1.1 to 2.0. 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 preferred. The hydrophobic group may be any of saturated, unsaturated, straight chain and branched chain, but preferably has 8 to 18 carbon atoms, and more preferably has 8 to 14 carbon atoms.

As sucrose fatty acid esters, mono,
It is a mixture of di, tri, and polyester (tetraester or more), but preferably has a high monoester and diester content, a low polyester content, and an HLB in the range of 4 to 18. 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 component (a) to component (b) is in the range of (b) / (a) = 0.00001 to 2.0, preferably 0.0001 to 1.0, and more preferably 0.0001 to 1.0. Preferably it is in the range of 0.0002 to 0.02.

The plant freshness-preserving agent of the present invention can be expected to have a sufficient effect by using only the component (a) and the component (b), but it also has a known method for maintaining freshness of cut flowers and vegetables or a life-extending effect. Components applied to the agent, such as a plant hormone (c), an antioxidant (d), a colloid coagulant (e), a bactericide and a preservative (f), can be added as necessary.

For example, as a plant hormone (c), IA
Natural or synthetic auxins such as A (indole-3-acetic acid), 2,4-dichlorophenoxyacetic acid, 2,6-dichlorobenzoic acid, naphthaleneacetic acid, zeatin, kinetin, 4-benzylaminobenzimidazole, benzyladenine, etc. Examples include natural or synthetic cytokinins, gibberellins, brassinolides, brassinosteroids such as castasterone, and the like.

AVG (aminoethoxyvinylglycine), AOA and the like have the function of inhibiting the production or action of ethylene and preventing plant aging.
(Aminoxyacetic acid hemihydrochloride), PACME (Isopropylidine-aminooxyacetic acid-2-methoxy-2-oxoethyl ester), STS (Silver thiosulfate or silver thiosulfato complex), AIB (Aminoisobutyric acid), DPS
S (1,1-dimethyl-4- (phenylsulfonyl) semicarbazide), PPOH (cispropenylphosphonic acid), STB (sodium tetraborate), allocoronaminic acid, aminotriazole, phenanthroline, DACP
(Diazocyclopentadiene), AITC (allyl isothiocyanate), NBD (2,5-norbornadiene), MCP (1-methylcyclopropene), ethionine and the like.

Further, for the purpose of aggregating colloid particles such as substances leaking from plants and metabolites generated by bacteria,
(E) As components, aluminum compounds such as aluminum sulfate, potassium aluminum sulfate, sodium aluminate, polyaluminum chloride, ammonium alum, aluminum lactate, aluminum silicate, calcium chloride, a combination of calcium chloride and phosphoric acid, The aggregates include neutralized salts of dimethylaminoethyl methacrylate, Mannich reactant of polyacrylamide, Hoffmann rearrangement reactant of polyacrylamide, alkylamine
It is also possible to mix epichlorohydrin condensate, polyvinylamine, chitosan and the like.

Further, at least one kind of a bactericide having a bactericidal action or an antibacterial action and a preservative (f) can be blended. Specifically, sodium hypochlorite, copper sulfate, 8-hydroxyquinoline, ethanol, isopropanol, methyl parahydroxybenzoate (or ethyl, propyl,
Butyl), proxel (trade name, Nagase Kasei), bronopol (trade name, Nagase Sangyo), cationic surfactant, 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.

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 esters, resin acid esters, polyoxyalkylene resin acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene alkyl phenyl ethers, and silicone surfactants. Can be

Examples of the anionic surfactant include carboxylic acid-based, sulfonic acid-based, sulfate ester-based and phosphate ester-based surfactants.

Examples of the carboxylic acid surfactant include fatty acids having 6 to 30 carbon atoms or salts thereof, polyvalent carboxylic acids or salts thereof, polyoxyalkylene alkyl ether carboxylic acids or salts thereof, and polyoxyalkylene alkyl amide ether carboxylic acids. Acids or salts thereof, rosin acids or salts thereof, dimer acids or salts thereof, polymeric acids or salts thereof, tall oil fatty acids or salts thereof, and the like.

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, naphthalenesulfonic acid or a salt thereof, diphenylethersulfonic acid or a salt thereof, and alkyl. Examples include a condensate of naphthalenesulfonic 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, and tristyrenated phenol sulfates or salts thereof. And polyoxyalkylene distyrenated phenol sulfate or a salt thereof.

Examples of the phosphoric acid ester surfactant include alkyl phosphates or salts thereof, alkylphenyl phosphates or salts thereof, polyoxyalkylene alkyl phosphates or salts thereof, polyoxyalkylene alkylphenyl phosphates and the like. And salts thereof.

As salts of these compounds, for example, metal salts (Na, K, Ca, Mg, Zn, etc.), ammonium salts,
Examples thereof include alkanolamine salts and aliphatic amine salts.

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, amide dimethyl carboxymethyl ammonia betaine ricinoleate, and the like.

Examples of the imidazoline type include alkyl carboxymethyl hydroxyethyl imidazolinium betaine and alkyl ethoxy carboxymethyl imidazolium betaine.

Examples of the amine oxide include alkyldimethylamine oxide, alkyldiethanolamine oxide, and alkylamidopropylamine oxide.

[0040] The plant freshness-preserving agent of the present invention comprises a saccharide (a)
And a powder formulation containing a sugar derivative type surfactant and a sugar alcohol derivative type surfactant (b), a concentrated aqueous liquid formulation containing the components (a) and (b) in high concentration, or as it is The aqueous liquid preparation to be used can be obtained.

When a powder preparation or a concentrated liquid preparation is used by mixing them with water, the component (a) may be used in an amount of 0.05%.
10 to 10% by weight, especially 0.5 to 5% by weight,
(B) component is 0.0001 to 0.1% by weight, and further 0.0%;
It is preferable to add 005 to 0.05% by weight, particularly 0.001 to 0.01% by weight. Further, if necessary, the plant hormone (c) may be 0.00001 to 0.5% by weight, particularly 0.0001 to 0.01% by weight.
The amount of the colloidal particle coagulant (e) is 0.0001 to 0.5% by weight so that the antioxidant (d) is 0.0001 to 0.5% by weight.
The disinfectant and preservative (f) are present in an amount of 0.0001 to 0.5% by weight, especially 0.0005 to 0.5% by weight, so as to be 0.5% by weight.
It is preferable to blend each component singly or in combination so as to be 1% by weight. When preparing an aqueous liquid preparation to be used as it is, each component is dissolved or dispersed in water so as to have the above concentration.

The weight ratio (b) / (c) of the component (b) to the plant hormone (c) is preferably 0.0002 to 10000, more preferably 0.001 to 1000, and still more preferably 0.01 to 1000. The range is 100. (B)
The (d) / (b) weight ratio of the component and the antioxidant (d) is 0.1.
0002 to 1000, more preferably 0.02 to 1000.
The range is from 0.01 to 50, and more preferably from 0.01 to 10. The weight ratio (b) / (e) of the component (b) and the colloidal particle flocculant (e) is preferably 0.0002 to 1000, more preferably 0.0002 to 20, and still more preferably 0.001 to 10. And particularly preferably 0.002 to 2
Range. The weight ratio (b) / (f) of the component (b) and the disinfectant and preservative (f) is 0.00001 to 20.
0 is preferable, and 0.0001 to 100 is more preferable.
More preferably, it is in the range of 0.01 to 50.

It is also effective to add the plant freshness preserving agent of the present invention to conventionally used commercially available plant freshness preserving agents and life-extending agents. 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.

The method of using the plant freshness preserving agent of the present invention includes a method of immersing a cut portion (cut portion) or the whole cut flower or vegetable in the aqueous solution of the plant freshness preserving agent of the present invention, and a method of using the aqueous solution of the plant freshness preserving agent of the present invention. By spraying the plant freshness-preserving agent aqueous solution of the present invention onto a nonwoven fabric, fiber, paper product, foam such as urethane or phenolic resin, cotton, a suitable absorbent such as a water-absorbing polymer, and cut flowers. There is a method of wrapping or piercing vegetables and vegetables.

The cut flowers and vegetables to which the plant freshness preserving agent of the present invention can be applied are not limited, and cut flowers such as rose, carnation, lily, orchid, gypsophila, eustoma, gerbera, chrysanthemum, solidus,
Sakura, peach, maki, alstroemeria, hydrangea, delphinium, starch, stock and the like. Examples of vegetables include leafy vegetables such as Chinese cabbage, cabbage, spinach, lettuce, komatsuna and shungiku, fruit and vegetables such as cucumber, tomato, eggplant, bell pepper and strawberry, and root vegetables such as radish, burdock and carrot.

[0046]

EXAMPLES <Preparation of Plant Freshness Preserving Agent> Example 1 Freshness preserving agents having the compositions shown in Table 1 were prepared (Products 1 to 5 of the present invention).
21 and comparative products 1 to 9). The remainder in Table 1 is tap water.

[0047]

[Table 1]

(Note) Decyl 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 ・ Sugar fatty acid amide: Compound represented by the following formula

[0049]

Embedded image

Krisal: Commercially available plant freshness preserving agent, Cryzar Japan Repeat: Commercially available plant freshness preserving agent, manufactured by Taisho Pharmaceutical. <Test for maintaining freshness of cut flowers> Commercially available cut flowers [chrysanthemum (cultivar: red fan), carnation (cultivation:
Juliet) and rose (variety Valerie)]. Cut flowers whose growth state and freshness state were the same were selected as much as possible, and the stems were cut with sharp scissors in water before use. The growth conditions were cut flowers in 200 ml of freshness preservative, temperature 23 ° C, humidity 60, and illuminance 5000lux.
Was performed under the following conditions. The freshness retention evaluation is performed visually,
The number of days from the state of petal withering, the occurrence of bent neck, the state of foliage withering, etc. until it became unbearable to ornamentation was taken as the number of days to last. The results are shown in Table 2. As compared with the comparative product, the product of the present invention showed a flower long-lasting effect in all the test systems, and the freshness of the sugar derivative or sugar alcohol derivative surfactant (b) A retention effect was observed.

[0051]

[Table 2]

Example 2 A test was conducted in the same manner as in Example 1 for the number of days for keeping roses when freshness preservatives (the remainder being tap water) in which the concentrations of sucrose and sucrose fatty acid ester were changed as shown in Table 3 were used. did. The numbers in Table 3 are the number of days in storage, the content of sucrose fatty acid ester is in the range of 0.0001 to 0.1% by weight, and the weight ratio of sucrose fatty acid ester / sucrose is 0.00001 to 2.
It can be seen that when the number is within the range of 0, the number of days to be held is significantly improved. The sucrose fatty acid ester is the same as in Example 1. In addition, in the case of using a commercially available 50-fold diluted liquid of Cryzar and a 50-fold diluted liquid, the shelf life was 5 days.

[0053]

[Table 3]

Example 3 From the commercially available Chinese cabbage and spinach, those having the same freshness and growth state as possible were selected, and each leaf was collected and subjected to a test. Each leaf was immersed in the freshness preserving agent prepared in Example 1 (Products 1 to 22 of the present invention and Comparative products 1 to 8, 10, and 11 in Table 1) for 5 minutes at room temperature. After that, each leaf is taken out and left at room temperature for 48 hours.
The weight of the leaves was measured and used as an index for maintaining freshness.
The results are shown in Table 4 as relative values when the weight of each leaf immediately before immersion is set to 100. From Table 4, it can be seen that the product of the present invention has a freshness-retaining effect on vegetables in all test systems as compared with the comparative product, and that the sugar (a) and the sugar derivative-type or sugar alcohol derivative-type surfactant (b) have a freshness-retaining effect. Was observed.

[0055]

[Table 4]

Example 4 The same evaluation as in Example 1 was performed using the products 23 to 35 of the present invention and the comparative products 12 to 19 shown in Table 5. Table 6 shows the results.
Shown in The sucrose fatty acid ester is the same as in Example 1. In addition, all reagents and the like are the same as in Example 1 unless otherwise specified.

[0057]

[Table 5]

[0058]

[Table 6]

Example 5 The same evaluation as in Example 1 was performed using the inventive products 36 to 48 and comparative products 20 to 27 shown in Table 7. Table 8 shows the results.
Shown in In each of the reagents and the like, unless otherwise specified, the same as in Example 1 is applied.

[0060]

[Table 7]

[0061]

[Table 8]

Example 6 The same evaluation as in Example 1 was performed using the products 49 to 58 of the present invention and the comparative products 28 to 34 shown in Table 9. Table 1 shows the results.
0 is shown. In each of the reagents and the like, unless otherwise specified, the same as in Example 1 is applied.

[0063]

[Table 9]

[0064]

[Table 10]

Example 7 Inventive products 59 to 68 and comparative products 35 to 41 shown in Table 11
And the same evaluation as in Example 1 was performed. Table 12 shows the results. In each of the reagents and the like, unless otherwise specified, the same as in Example 1 is applied.

[0066]

[Table 11]

[0067]

[Table 12]

In the present invention, preferably,
Products of the present invention 5, 7, 11, 18, 22 and those having a shelf life of 10 days or more in Table 3, products of the present invention 27, 28, 32, 4
0, 41, 45, 52, 53, 56, 62, 64-66
And 68, and more preferably the product of the present invention 11, 1
8. Indicated in Table 3 for 15 days of shelf life, product 2 of the present invention
7, 28, 40, 52, 53, 64 and 65.

[0069]

According to the present invention, it exerts an excellent freshness preserving effect on various collected plants, and is highly safe.
A freshness maintaining agent for plants such as collected plants is obtained.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazuhiko Kurita 1334 Minato, Wakayama-shi, Wakayama Prefecture Kao Corporation Laboratory (56) References JP-A-1-309639 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01N 3/02 A23B 7 / 08,7 / 14

Claims (8)

(57) [Claims] 1. A monosaccharide selected from glucose, xylose, arabinose, ribose, galactose, fructose, mannose, rhamnose, inositol, sorbitol, mannitol, xylitol, glycerol, erythritol, glucosamine, galactosamine, sucrose, trehalose, trehalulose, maltose, cellobiose, palatinose, lactose, cyclodextrin, xylo-oligosaccharides, fructo-oligosaccharide, galacto-oligosaccharide, malto-oligosaccharide, inulooligosaccharide, with one or more saccharides selected oligosaccharide compound or we selected from Chichihate oligosaccharide (a), sugar derivatives And one or more surfactants (b) selected from the group consisting of a surfactant and a sugar alcohol derivative surfactant, and the weight ratio of (b) / (a) is 0.00001 to 2.0. Plant freshener. 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 plant freshness preserving agent according to claim 1, wherein the component (b) is a surfactant having a structure in which a hydrophobic group is amide-bonded to sugar or sugar alcohol. 5. It contains at least one or more plant hormones (c), and the weight ratio of (b) / (c) is 0.000.
The plant freshness preserving agent according to any one of claims 1 to 4, which has a molecular weight of 2 to 10,000. 6. An anti-aging agent (d) having at least one kind of ethylene biosynthesis inhibiting ability or ethylene action inhibiting ability, wherein the weight ratio of (b) / (d) is 0.000.
The plant freshness preserving agent according to any one of claims 1 to 5, which is 2 to 1,000. 7. At least one kind of colloidal particle aggregating agent (e), wherein the weight ratio of (b) / (e) is 0.00.
The plant freshness preserving agent according to any one of claims 1 to 6, which is from 02 to 1,000. 8. A bactericide or preservative (f) having at least one kind of bactericidal or antibacterial action,
The plant freshness preserving agent according to any one of claims 1 to 7, wherein a weight ratio of (b) / (f) is 0.00001 to 200.