JPH0748203A - Freshness preservative for cut flower - Google Patents

Abstract

PURPOSE:To obtain a freshness preservative for cut flowers for making flowers admirable until the flowers completely come into full bloom almost without withering flowers even in the case of cut flowers. CONSTITUTION:This freshness preservative for cut flowers is obtained by mixing a solution containing a guanidine salt compound and an alkali silicate metal with water and is used. For example, when the guanidine compound and sodium silicate are dissolved in water, sodium silicate is reacted with water and is changed into sodium silicate containing a large amount of oxygen. Sodium hydroxide is considered to arise in the process. The sodium hydroxide shows strong alkali and suppresses occurrence of bacteria. On the other hand, the guanidine compound directly prevents oxidation of methionine, extremely subdues biosynthesis of ethylene. Further sodium hydroxide is added and the guanidine compound is considered to prevent change of qualities of proteins and carbohydrates and amino acids constituting cut flowers with sodium hydroxide. Consequently, the freshness preservative for cut flowers capable of making flowers come into full bloom and admirable almost without withering cut flowers can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a freshness-retaining agent for cut flowers, which retains the freshness of cut flowers during storage and during distribution.

[0002]

2. Description of the Related Art It has long been known that ethylene and microorganisms are involved in cutting flowers withering and dying. In the ethylene biosynthetic pathway in cut flowers, methionine, which is a sulfur-containing amino acid, is oxidized by oxygen around the cut end via aminocyclopropane and carboxylic acid. As a result, ethylene is biosynthesized.
Therefore, in order to suppress the biosynthesis of ethylene, it has been considered effective to reduce the oxygen concentration around the cut edge by some method.

Therefore, in recent years, in order to suppress the growth of microorganisms and reduce the oxygen concentration near the cut end,
A solution containing a silver compound that suppresses the reproduction of microorganisms and ascorbic acid, pyrogallol, etc., that lowers the oxygen concentration is used as a freshness-keeping agent for cut flowers.

[0004]

However, when the above-mentioned conventional freshness-retaining agent for cut flowers is used for cut flowers, a certain effect can be obtained, but the cut flowers still wither and wither before they fully bloom. . On the other hand, the uncut flowers died after the flowers had fully bloomed with almost no wilting. It is considered that this difference is due to the following reasons.

Silver compounds have not been able to sufficiently suppress the growth of microorganisms. Ascorbic acid, pyrogallol, etc. reduce the oxygen concentration, but do not prevent the oxidation of methionine, which is one of the amino acids.

[0006] The present invention has been made in view of the above problems, and even a cut flower, a freshness-retaining agent for a cut flower, which can be viewed with almost no wilting until the flower is completely bloomed. For the purpose of providing.

[0007]

Means for Solving the Problems The present inventor has conducted various studies using various substances in order to obtain substances that sufficiently suppress the biosynthesis of ethylene and the growth of microorganisms. As a result, they have focused on guanidine salt compounds and alkali metal silicates.

For example, it is known that when an alkali metal silicate salt is added to water, the alkali metal silicate salt is hydrolyzed to form an alkali hydroxide. This alkali hydroxide exhibits a strong alkali in water, so that microorganisms do not propagate. However, when the cut flowers were dipped in this solution, the cut flowers themselves died due to the strong alkali, and therefore they could not be used normally.

On the other hand, it is known that the guanidine salt compound itself has an antioxidant action, but if it is dissolved alone in water, an excellent effect cannot be obtained. Therefore, the present inventor has devised, as a freshness-keeping agent for cut flowers, a configuration comprising a combination of a guanidine salt compound and an alkali metal silicate.

Examples of the guanidine salt compound mentioned here include aminoguanidine hydrochloride, guanidine carbonate and guanidine phosphate. Further, examples of the alkali metal silicate include sodium silicate and potassium silicate.

For example, when the alkali metal silicate is sodium silicate, first, sodium silicate reacts with water, the sodium silicate is changed to sodium silicate containing a large amount of oxygen, and sodium hydroxide is generated in the process. I think so. This sodium hydroxide exhibits strong alkalinity and suppresses the generation of bacteria, but at the same time, it also alters the proteins and carbohydrates that form plants, so it could not be used under normal conditions.

[0012] However, the guanidine salt compound directly prevents the oxidation of methionine and extremely suppresses the biosynthesis of ethylene. Furthermore, sodium hydroxide is added, and proteins, carbohydrates and amino acids forming cut flowers are hydroxylated. It seems to prevent alteration by sodium. In addition to the above-mentioned components, an oxygen concentration lowering agent and nutrients for cut flowers may be contained in use.

The most preferred mode of use is 1000 ml of water.
On the other hand, 0.1 to 1 g of guanidine salt compound, 0.3 g to 1 g of sodium silicate (or potassium silicate), 0.1 g to 0.2 g of magnesium sulfate, and sodium carbonate of 0.
It is used by mixing and dissolving 1 g to 0.2 g.

[0014]

In the present invention, when a solution containing a guanidine salt compound and an alkali metal silicate is added to water, the alkali metal silicate is dissolved in the water to prevent the growth of microorganisms. On the other hand, the guanidine salt compound prevents oxidation of the compounds forming the cut flowers (carbohydrate, protein, amino acid, methionine). In particular, preventing the oxidation of methionio suppresses the biosynthesis of ethylene. Then, the synergistic effect of the guanidine salt compound and the alkali metal silicate protects the cut flowers even though the aqueous solution of the alkali metal silicate is strongly alkaline.

[0015]

EXAMPLES The present invention will be described with reference to specific examples, which will be used for understanding the present invention. The embodiments are examples embodying the present invention and do not limit the technical scope of the present invention.

Example 1 1 g of sodium silicate and 1 g of a guanidine salt compound were added to 10 parts of water.
It was mixed and dissolved in 00 ml to obtain an aqueous solution containing a freshness-keeping agent for cut flowers.

Example 2 1 g of potassium silicate and 1 g of guanidine salt compound were added to 100 parts of water.
An aqueous solution containing a freshness-keeping agent for cut flowers was obtained by mixing and dissolving in 0 ml.

Example 3 0.5 g of potassium silicate, 0.5 g of sodium silicate,
1 g of a guanidine salt compound was mixed and dissolved in 1000 ml of water to obtain an aqueous solution containing a freshness-retaining agent for cut flowers.

Example 4 1 g of sodium silicate, 1 g of guanidine salt compound, 0.2 g of magnesium sulfate and 0.2 g of sodium carbonate were mixed and dissolved in 1000 ml of water to obtain an aqueous solution containing a freshness-retaining agent for cut flowers. .

Example 5 3 g of silver nitrate, 20 g of sodium thiosulfate, 1 g of sodium silicate and 1 g of a guanidine salt compound were added to 1000 parts of water.
An aqueous solution containing a freshness-keeping agent for cut flowers was obtained by mixing and dissolving in ml.

To each aqueous solution containing the freshness-retaining agent for cut flowers of Examples 1 to 5 above, at room temperature (20 to 25 ° C.),
Soaked 20 rose cut flowers each.

When the cut flowers were dipped in the respective aqueous solutions containing the freshness-retaining agent for cut flowers obtained as in Examples 1 to 5, the cut flower buds all became very large and bloomed beautifully after a few days. This cut flower almost never wilted, and died after the flower had bloomed. In other words, I was able to extend the period in which I could appreciate cut flowers to the maximum.

As a comparative control, the first solution in which nitrogen, phosphoric acid and potassium necessary for flowers were dissolved and mixed and dissolved in an appropriate amount, 3 g of silver nitrate and 20 g of sodium thiosulfate were added to 1 part of water.
A second solution was prepared by mixing and dissolving it in 000 ml, and 20 cut flowers were dipped in each solution. In each solution, the cut flowers eventually wilt and scatter before the flowers bloom.

[0024]

According to the constitution of the present invention, when a solution containing a guanidine salt compound and an alkali metal silicate is added to water, the aqueous solution of the alkali metal silicate is dissolved in water to prevent the growth of microorganisms. On the other hand, the guanidine salt compound prevents the oxidation of methionine and suppresses the biosynthesis of ethylene.
By the synergistic effect of this guanidine salt compound and the alkali metal silicate, the cut flowers can be protected even though the aqueous solution of the alkali metal silicate is strongly alkaline. Therefore, cut flowers almost never wilt,
After flowers bloom, they die. That is, it was possible to obtain a freshness-retaining agent for cut flowers that allows the flowers to be viewed over a long period of time.

Claims (1)

[Claims] 1. A freshness-keeping agent for cut flowers, which comprises a guanidine salt compound and an alkali metal silicate.