JPH0525003A - Preservative of cut flower - Google Patents

Abstract

PURPOSE:To obtain a preservative for cut flowers safely usable for any plant, not limiting usage because of no use of chemical having strong action on organisms and no fear of residual toxicity, not causing break of flowers at neck. CONSTITUTION:A preservative for cut flowers comprising a solution or suspension containing silver ion, calcium ion and a phosphate-based ion as active ingredients, having pH3-7, a molar ratio of calcium/P of 1:2-2:1 and 0.0001-20wt.% silver ion based on sum of calcium ion and phosphate ion or a preservative for cut flowers comprising a solution or suspension containing a substance prepared by supporting 0.0001-20wt.% silver ion on hydroxyapatite by adsorption or ion exchange as an active ingredient, having pH3-7.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a cut flower preservative for prolonging the lifespan of cut flowers and ikebana and preserving cut flowers beautifully and vividly for a long period of time. More specifically, silver, calcium and phosphoric acid are ionized in an acidic solution. The present invention relates to a preservative or a pretreatment agent for cut flowers, which can preserve cut flowers beautifully and freshly for a longer time than conventional preservatives for cut flowers.

[0002]

2. Description of the Related Art Conventionally, cut flowers and ikebana have been preserved for a long time. In order to increase the water absorption from the stem cutting portion, stem cutting in water, salt cutting at the cutting portion, crushing, baking, aluminum sulfate etc. For example, treatment with a scavenger such as, treatment with an enzyme inhibitor such as 8-hydroxyquinoline sulfate, treatment with a cell activator such as sugar and cytokinin, malachite green, orthophenylphenol, boric acid, copper or silver salt, etc. Treatments with organic or inorganic fungicides, treatments with antibiotics such as chloramphenicol, streptomycin and combinations thereof have been performed.

However, in the conventional treatment methods, the chemicals used are bactericidal agents, antibiotics, and other substances that have a strong effect on the living body, so that their use is limited, and a sufficient life-prolonging effect cannot be obtained, or metal cannot be obtained. On the contrary, the use of salt may cause the plants to have poor flower life, or even cause phytotoxicity. Especially, it is said that silver ion is an element that does not easily migrate to the body, and it is used as a silver thiosulfate complex ion that migrates to the body.However, it takes time to adjust it, and it gradually decomposes and turns black, so its use is restricted. ing. Calcium is also an element that does not easily migrate into the body, and its deficiency causes breakage of flowers, and phosphoric acid has a large effect on plant growth and flowering. ing.

[0004]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention The drawbacks of the conventional preservatives for cut flowers have been solved, the drug used has no strong effect on the living body, and there is no concern about residual toxicity. It does not cause neck breakage and does not cause discoloration due to silver regardless of the use of silver. Therefore, it is an object of the present invention to safely provide a preservative or pretreatment agent for cut flowers that can be used for any plant.

[0005]

[Means for Solving the Problems] To solve the above problems, as a result of various studies, it was found that phosphate ions, calcium ions and silver ions as active ingredients were dissolved in an acidic solution and used as a cut flower preservative. As a result, it was confirmed that the respective absorbability was improved and the preservability of cut flowers was enhanced, and a preservative or pretreatment agent for cut flowers, which was economical and easy to use and was highly practical, could be obtained.

[0006] The active ingredients, phosphate ion, calcium ion and silver ion used in the present invention may be separate salt compounds. That is, calcium ion, silver ion and phosphate ion can be used if they are salts which are soluble in water. Generally, phosphoric acid is a general term for acids formed by hydration of phosphorus pentaoxide, and is meant to mean polyphosphoric acid such as metaphosphoric acid, pyrophosphoric acid, orthophosphoric acid, and triphosphoric acid and tetraphosphoric acid. There is.

However, it is well known that phosphoric acid reacts with various metals to form complex phosphates. For example, calcium pyrophosphate [Ca ₂ P ₂ O ₇ ], calcium tertiary phosphate [Ca ₃ (P
O ₄ ) ₂ ], tetracalcium phosphate [Ca
₄ (PO ₄ ) ₂ O], octacalcium phosphate [Ca ₈ H ₂ (PO ₄ ) ₆ 5H ₂ O], hydroxyapatite [Ca ₅ (PO ₄ ) ₃ (OH)], halogenated apatite [Ca ₅ ( PO ₄ ) ₃ X] and the like. These salts also slightly dissolve in acid and effectively act as preservatives as calcium ions and phosphate ions in the present invention. Anions are also included.
Therefore, it is to be understood that the phosphate ion according to the present invention includes all the above-mentioned phosphate ions and phosphate anions.

Generally, calcium phosphate compounds or silver phosphate compounds have low solubility in water. Therefore, when a soluble calcium salt, a silver salt and a phosphate are added as active ingredients in the present invention, a calcium phosphate-based compound,
A silver phosphate-based compound or a double salt thereof is formed and precipitates. Therefore, even if calcium phosphate-based compound, a mixture of silver phosphate-based compounds or double salts thereof are collected, and these compounds are suspended and dissolved in water as an active ingredient and adjusted to a predetermined pH and used as a preservative. Shows the effect of.

It is well known that calcium phosphate compounds have an ion exchange ability or an adsorption ability. Therefore, it is also possible to suspend and dissolve a substance in which silver ions are supported by these calcium phosphate-based compounds by ion exchange or adsorption in water, adjust to a predetermined pH and use as a preservative. In some cases, silver-supported calcium phosphate is used. It can be said that it is preferable to use a system compound because the handling is simple.

The dissolved amount of calcium ion, silver ion and phosphate ion used in the present invention depends on their ionic product and the pH of the solution used. Therefore, even if calcium, silver and a phosphate salt are used in excess, the calcium phosphate compound and the silver phosphate compound are precipitated at an ionic product or more, so that the ratio of the salts to be used is not as important as the left. The plant tissue is not violated, and the pH of the solution is adjusted to 3 to ensure that calcium, silver and phosphate ions are stably present.
7, the Ca / P molar ratio was 1: 2 to 2: 1 and the amount of silver ions was 0.000 by weight based on the calcium phosphate compound.
It can be said that it is preferable to adjust to about 1 to 20%.

Since this amount of silver ions can be supported on the calcium phosphate compound by adsorption or ion exchange as described above, Ca / P of Ca / P obtained by adsorption or ion exchange treatment of a water-soluble silver salt by a conventional method. Molar ratio 1: 2
A solution or suspension in which a calcium phosphate compound having a ratio of 2: 1 is solely used as an active ingredient and the pH is adjusted to 3 to 7 can be used as a preservative. Silver supported by this method is
It does not discolor with chemicals and is harmless to living organisms.

That is, a water-soluble silver salt, a water-soluble calcium salt and phosphoric acid are contained in a Ca / P molar ratio of 1: 2 to 2: 1, and a silver ion / calcium phosphate compound 0.0001 to 20% by weight.
After adding to water in a ratio such that
Adjust pH to 3-7. Depending on the amount of the reagent used, the reaction product precipitates and becomes a suspension, but the suspension can be used as it is as a preservative, but the precipitate is separated,
It is preferred to use the solution as a preservative. Ca / P
The calcium phosphate-based compound having a molar ratio of 1: 2 to 2: 1 may be adsorbed or ion-exchanged with an aqueous silver salt solution, and the substance obtained may be dissolved in water having a pH of 3 to 7 before use. It is also possible to use a substance prepared by mixing a calcium phosphate-based compound in a molar ratio of / P1: 2 to 2: 1 and a water-soluble silver salt in the above ratio in a liquid adjusted to pH 3 to 7.

The preservative thus obtained can be used by mixing it with a conventionally used preservative, such as rose, carnation, orchid, gladiolus, gerbera, turkish kyouyou, chrysanthemum, tulip, freesia, It is effective even when used on various flowers such as sweet pea, lily, and iris, and its use is not limited to a specific type of flower or variety.

[0014]

[Example] Cut flowers of roses (superstar, omega species) and carnations (barbara, coral species) 10 each
Book, and 5 gladiolus each, in a room at 20 to 25 ° C., into an aqueous solution having the composition shown in Table 1, tap water, and 500 ml of a commercially available preservative solution, and inspecting the number of healthy flowers after the lapse of days, The ratio of water absorption was calculated with 100 using tap water. Table 2 and Table 3 show the results obtained by observing the degree of atrophy of each flower and investigating the number of storage days.

[0015]

[Table 1]

[0016]

[Table 2]

[0017]

[Table 3]

[0018]

The preservative or pretreatment agent for cut flowers according to the present invention can be obtained by a simple operation and, even if it contains silver, does not cause discoloration due to silver, and in addition to the conventional preservatives. Since it does not contain any chemicals such as antibiotics and bactericides, which exert a strong effect on the living body and cause phytotoxicity, it can be safely used for any kind of cut flowers.

Claims (4)

[Claims] 1. A preservative or pretreatment agent for cut flowers, which is a solution or suspension having a pH of 3 to 7 and containing silver ions, calcium ions and phosphate ions as active ingredients. 2. A calcium / P molar ratio of 1: 2 to 2:
The preservative or pretreatment agent for cut flowers according to claim 1, wherein the content of silver is 0.0001 to 20% by weight based on the sum of calcium and phosphate ions. 3. The calcium ion and the phosphate ion are present in the form of at least one calcium phosphate selected from tricalcium phosphate, calcium diphosphate, calcium hydrogen phosphate, octadecaphosphate and hydroxyapatite. Preservative or pretreatment agent for cut flowers of 2. 4. The preservative or pretreatment agent for cut flowers according to claim 1, wherein the silver ion, calcium ion and phosphate ion are in the form of hydroxyapatite in which silver is carried by ion exchange or adsorption.