JPH05139903A - Preservative for cut flower - Google Patents

Abstract

PURPOSE:To obtain a preservative for cut flowers, composed of an aqueous solution prepared by dissolving a silver salt or the silver salt and an inorganic carbonate together in water and capable of maintaining the life of the various ornamental cut flowers such as rose. CONSTITUTION:A preservative for cut flowers is obtained by dissolving a silver salt (a salt selected from nitrate radical, carbonate radical, phosphate radical, sulfate radical and thiosulfate radical is especially preferred) or the silver salt and an inorganic carbonate (a carbonate selected from potassium carbonate, potassium hydrogencarbonate, sodium carbonate and sodium hydrogencarbonate is especially preferred) together in water. The concentration of the silver salt and inorganic carbonate is preferably about 0.01-100ppm, respectively. The preservative for the cut flowers is poured into a vessel for flower arrangement or preservation such as a vase and the cut ends of the flowers are inserted thereinto for use. Excellent longevity effects are obtained by using this preservative for the cut flowers. Since the silver nitrate, etc., is used, the raw material is readily available and the cost is low.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a cut flower preservative,
More specifically, the present invention relates to a cut flower preservative capable of maintaining the longevity of various cut flowers for ornamental use such as roses. The variety and quantity of fresh flowers used for appreciation are increasing, and at the same time, there is a strong demand for keeping these cut flowers for a long time.

[0002]

2. Description of the Related Art Researches for prolonging the life of cut flowers by using chemicals have been conducted for a long time, and various preservatives have been proposed. These preservatives are used to produce rose cut flowers.
(Seibundo Shinkosha, 1973, Kiyoshi Okawa) is well summarized, for example, by Scholes-Bodyley, 200 ppm of 8-hydroxyquinoline sulfate, 50 ppm of silver acetate and 5% of sugar dissolved in water. In addition, 200 ppm of citric acid-8-hydroxyoxyquinoline and 3% of sugar were dissolved in Marousky and 3% of water, and further, Mayak. 50ppm, 4 sugar
% Dissolved in water has been reported.

[0003]

[Problems to be Solved by the Invention] However, sulfuric acid-
The one using 8-hydroxyoxyquinoline has a not so high preservation effect, and the one using citric acid-8-hydroxyoxyquinoline has some effect, but it has a metal-containing effect on citric acid-8-hydroxyoxyquinoline. Since it is corrosive, it has inconveniences such as the inability to use a metal container, and it is difficult to say that the preservation effect is satisfactory.
Further, all of these drugs have the drawback of being expensive. Therefore, at present, there is no known cut flower preservative with low cost and excellent effect.

[0004]

[Means for Solving the Problems] The inventors of the present invention have tackled these problems and have conducted diligent research to obtain a preservative having an excellent life-prolonging effect on cut flowers, especially roses. It was found that a high effect can be obtained by using an aqueous solution in which an inorganic carbonate is dissolved simultaneously with a salt or a silver salt, and the present invention has been completed. That is, the present invention is a silver salt in water,
Alternatively, it is a cut flower preservative in which an inorganic carbonate is dissolved simultaneously with a silver salt. INDUSTRIAL APPLICABILITY The present invention is used for a variety of cut flowers, particularly roses, in order to prolong their life in a fresh state.

The silver salt used in the present invention is not particularly limited in its kind as long as it is soluble in water, but it is desirable that it is easily available and relatively inexpensive as well as having excellent effects. For example, silver nitrate, silver carbonate, silver phosphate, silver sulfate, silver thiosulfate, etc., among which the effect of silver nitrate and silver carbonate is particularly remarkable. In addition, as the silver salt, a higher purity is preferable, and usually, a reagent of the first class or a special class is suitable. The silver salt may be used alone or in combination of two or more, but the concentration in the aqueous solution is usually 0.001 to 100 ppm,
It is preferably about 0.05 to 10 ppm, more preferably about 0.01 to 1 ppm. Silver salt concentration is 0.0
When it is lower than 01 ppm, the preservation effect is small, and
Even if it is higher than 100 ppm, no further effect can be expected,
On the contrary, the life of cut flowers may be adversely affected.

In the present invention, an inorganic carbonate is used together with a silver salt, if necessary, for the purpose of keeping the cut end of the flower in a fresh state and further prolonging the life of the flower. Examples of the carbonate include potassium carbonate, potassium hydrogen carbonate, sodium carbonate, sodium hydrogen carbonate, rubidium carbonate, rubidium hydrogen carbonate, cesium carbonate, cesium hydrogen carbonate, ammonium carbonate, ammonium hydrogen carbonate, and the like. , Potassium carbonate, sodium hydrogen carbonate, sodium carbonate and the like are preferable, and potassium hydrogen carbonate and potassium carbonate are particularly preferable. In general, the higher the purity of these inorganic carbonates, the more preferable, and the reagent of the first class or the special class is suitable.

There are no particular restrictions on the type of water used to dissolve the silver salt, but water with a high degree of cleanliness is preferable, and examples thereof include pure water, distilled water, tap water, and natural fresh water. Of these, pure water and distilled water are particularly preferable. The concentrations of silver salts and inorganic carbonates as cut flower preservatives are usually as described above, but if the storage period is long, store them at a high concentration and further before use. Water may be added to dilute it to a predetermined concentration, or a silver salt and an inorganic carbonate may be put in a pouch or the like to be prepared and dissolved in a predetermined amount of water at the time of use. The cut flower preservative of the present invention is used by pouring it into an ikebana container such as a vase or a container for storage, and inserting a cut end of the flower into the container.

[0008]

【Example】

Example 1 0.002 mg (0.01 p) of silver nitrate, silver carbonate, silver phosphate, silver sulfate or silver thiosulfate was added to 200 ml of pure water.
pm) Dissolved and prepared samples each put in a 300 ml plastic container. Room temperature 20 ° C, relative humidity 6
At 5%, fresh roses (tinets) in the form of buds were placed in each container, and the condition of flower holding was observed. The observation results are shown in Table 1. The number of days the flowers lasted was 10 days or longer. Note that the number of days the flower lasts is the number of days until the appreciation value is objectively lost due to a situation where the flower is bent.

[Table 1] Table 1 Number of days to hold flowers (days) (0.002 mg / 200 ml, pure water) AgNO ₃ 16 Ag ₂ CO ₃ 15 Ag ₃ PO ₄ 14 Ag ₂ SO ₄ 14 Ag ₂ S ₂ O ₃ 16

Example 2 In 200 ml of pure water, 0.2 mg (1 ppm) of potassium hydrogen carbonate or sodium hydrogen carbonate and 0.002 mg of silver nitrate were added.
(0.10ppm) dissolved at the same time, 300ml of this
Sample in a plastic container and 200 ml of pure water
Potassium carbonate or sodium carbonate (0.2 mg) and silver nitrate (0.002 mg) were dissolved in the solution, and four types of samples were prepared by placing the solutions in 300 ml plastic containers. At room temperature of 20 ° C. and relative humidity of 65%, fresh roses (tinets) in the form of buds were placed in each container, and flower holding was observed. The observation results are shown in Table 2. The number of days of flower holding was 10 days or more.

[Table 2] Table 2 Number of days of flower retention (days) AgNO ₃ + K ₂ CO ₃ 18 AgNO ₃ + KHCO ₃ 18 AgNO ₃ + Na ₂ CO ₃ 16 AgNO ₃ + NaHCO ₃ 17

Comparative Example A sample in which only 200 ml of pure water was placed in a 300 ml plastic container, and an aqueous solution in which 0.04 g of citric acid-8-hydroxyquinoline and 6 g of sugar were dissolved in 200 ml of pure water were placed in a 300 ml plastic container. Two types of samples were prepared. Room temperature 20 ° C, relative humidity 65%
Then, fresh roses (tinets) in the state of buds were placed in each container, and the condition of the flowers was observed. Table 3 shows the observation results
Shown in. The number of days of holding pure water was shorter, and that of citric acid-8-hydroxyquinoline was longer than pure water.
It was less than 0 days.

[Table 3] Table 4 Days to hold flowers (days) Pure water 7 Citric acid-8-hydroxyquinoline 9

[0011]

EFFECTS OF THE INVENTION By using the cut flower preservative of the present invention, it has become possible to obtain an excellent life-prolonging effect which has never been seen. Moreover, since silver nitrate or the like is used, raw materials are easily available and inexpensive.

Claims (6)

[Claims] 1. A cut flower preservative characterized in that a silver salt is dissolved in water. 2. The cut flower preservative according to claim 1, wherein an inorganic carbonate is dissolved simultaneously with a silver salt. 3. The cut flower preservative according to claim 1, wherein the silver salt is one or more selected from silver nitrate, silver carbonate, silver phosphate, silver sulfate and silver thiosulfate. 4. The cut flower preservative according to claim 1, wherein the silver salt concentration is 0.001 to 100 ppm. 5. The cut flower preservative according to claim 2, wherein the inorganic carbonate is one or more selected from potassium carbonate, potassium hydrogen carbonate, sodium carbonate and sodium hydrogen carbonate. 6. The concentration of inorganic carbonate is 0.01 to 100 pp.
The cut flower preservative according to claim 2, which is m.