JP2005281196A - Spraying agent for retaining freshness of cut flower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a spraying agent for retaining freshness of cut flowers in which contract of petal and inclination of the base of petal are prevented and flowering is delayed and freshness of petals of rose , carnation, and the like, is retained over a long period and waste liquid is not discharged by spraying the agent to the cut flower. <P>SOLUTION: This spraying agent for retaining the freshness of cut flowers comprises an aqueous solution containing 0.001-1% one or more kinds of sugars such as trehalose and fructose and 0.01-10 ppm 6-benzylaminopurine and preferably further comprises 0.01-5% one or more kinds of alcohols such as glycerol and slight amount of silver, and the spraying agent has pH 6-8. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention belongs to a cut flower freshness-keeping spray and can be suitably used to keep freshness of roses and carnations.

JP-A-11-12101 Conventionally, it has been said that the freshness of cut flowers decreases due to nutrient outflow, conduit blockage, bacterial growth in fresh water, and the like. In order to solve these problems, various cut flower freshness preservation agents containing sugars, ethylene inhibitors, antibacterial agents and the like have been proposed.

However, the conventional cut flower freshness-keeping agent is used by directly growing cut flowers in a solution prepared by diluting with tap water. The retention agent contains an organic acid or an organic acid salt as an antibacterial agent. Therefore, the solution is acidic, and a drug such as silver is contained as a bactericidal component. Therefore, the usage is limited to cut flowers, and there is a concern about environmental problems when the used solution is discarded.
Therefore, the subject of this invention is providing the cut flower freshness maintenance spray agent which does not have a waste liquid, maintaining the freshness of a petal over a long period of time by spraying with respect to a cut flower.

In order to solve the problem, the cut flower freshness-keeping spray (hereinafter referred to as “spraying agent”) of the present invention is one or two or more sugars 0.001 to 1%, preferably 0.01 to 0.5. % And 6-benzylaminopurine 0.01 to 10 ppm, preferably 0.1 to 5 ppm.
Sugar nourishes petals without acidifying the aqueous solution. However, if the content is less than 0.001%, the action is poor, and if it exceeds 1%, the leaf surface is not suitable for sticky appreciation. Therefore, the content is limited to the above range. 6-Benzylaminopurine is a plant growth agent that exhibits an action similar to that of a cytokine which is a kind of plant hormone. However, if the content is less than 0.01 ppm, the action is poor, and if it exceeds 10 ppm, the growth may be promoted too much.

  According to the spray of the present invention, the contraction of petals and the inclination of the roots of petals can be prevented, and the freshness of cut flowers can be maintained for a long time. For this reason, it is beneficial to enjoy observation over a long period of time.

  In the spray of the present invention, glucose, fructose, galactose, maltose, sucrose, lactose, trehalose, mannitol, raffinose, etc. can be used as the sugar. Fructose and trehalose are preferred from the viewpoint of nutrient supply and cytoprotective effect.

  In the spray of the present invention, examples of alcohols include monoalcohols such as methanol, ethanol, propanol and butanol, and polyhydric alcohols such as glycerin, propylene glycol, dipropylene glycol, 1,3-butylene glycol, sorbitol and polyethylene glycol. Can be used. From the viewpoints of moisturizing action and film action, ethanol and glycerin are preferred, and glycerin is particularly preferred. This is because glycerin suppresses moisture transpiration from the surface of the flower or leaf, and thus suppresses the growth rate. The concentration of the alcohol is 0.01 to 5%, preferably 0.1 to 1%. If the blending amount of the alcohol is less than 0.01%, the effect is poor, and if it exceeds 5%, droplets remain on the surface of the leaves, resulting in a loss of appreciation.

  Furthermore, a pH adjuster, a bactericidal agent, and a surfactant can be used in combination in the spray of the present invention at a concentration that does not impair the effects of the invention. Examples of the pH adjuster include citric acid, disodium hydrogen citrate, dipotassium hydrogen citrate, and tripotassium citrate. By adjusting the pH of the propellant to 6 or more, preferably 6 to 8 with a pH adjusting agent, the alteration of the pigment in the petal is suppressed. Examples of the disinfectant include 8-hydroxyquinoline enoate, sulfate, quaternary ammonium such as benzalkonium chloride, chlorine compounds such as sodium hypochlorite, silver nitrate, aluminum sulfate, and the like. Since the spray of this invention is sprayed, it does not flow into sewage or the like as a waste liquid, and is disposed of with flowers. Therefore, even if such a disinfectant is included, it does not directly harm the environment. Examples of the surfactant include nonionic surfactants such as polyoxyethylene sorbitan monolaurate.

  Examples of the types of flowers to which the spray of the present invention can be applied include roses, carnations, chrysanthemum, gypsophila, orchids, eustoma, starches, lilies and tulips.

  When spraying the spray of the present invention onto cut flowers, it is preferable to spray the whole cut flowers using a spraying device, but it may be applied to the leaves with a brush or the like.

  Hereinafter, although an Example is shown, this invention is not limited to this.

  The rose buds and carnation buds purchased from the market were cut to a uniform stem length of 30 cm and immersed in tap water at 20 ° C. On the next day, 300 ml of tap water was put in each of a plurality of beakers, each of the flowers was inserted into each beaker, left in a room at 20 ° C., and continuously irradiated with a fluorescent lamp for 24 hours a day. Thus, the spray which consists of a solution of the predetermined composition of Examples 1-5 mentioned later was sprayed to each flower in the state which arranged the flower in tap water. The number of times of spraying was 2 times in total immediately after the flower bloomed (on the third day after the insertion of one wheel), and 3 days later, and the amount of spraying was 10 mL / time.

  Each solution was carried out in parallel three by three under the same conditions, and the inclination of the stalk and the contraction degree of the petals were observed. The evaluation was expressed by averaging three scores. Regarding roses, the situation on the second, fourth, and eighth days from the first spraying date is shown in Table 1. Regarding carnations, the situation on the fourth, sixth and eighth days is also shown in Table 2. For comparison, the results of observation without spraying (Comparative Example 1) and the results of spraying with tap water instead of the spray (Comparative Example 2) are also shown in the table.

Comparative Example 1: No spraying Comparative Example 2: Tap water only Example 1: Trehalose 0.1%, 6-benzylaminopurine 2 ppm, balance tap water Example 2: Trehalose 0.1%, fructose 0.2%, 6 -Benzylaminopurine 2 ppm, balance tap water Example 3: Trehalose 0.1%, fructose 0.2%, 6-benzylaminopurine 2 ppm, glycerin 1%, balance tap water Example 4: Trehalose 0.05%, fructose 0.1%, 6-benzylaminopurine 0.2 ppm, ethanol 0.5%, glycerin 0.5%, balance tap water Example 5: trehalose 0.1%, fructose 0.2%, 6-benzylaminopurine 2ppm, 1% glycerin, 0.1ppm silver, remaining tap water

  As can be seen from the table, the single-row insert (Examples 1-5) sprayed with the spray of the present invention is not sprayed (Comparative Example 1), of course, and the single-wheel insert sprayed with tap water (Comparison) Freshness was maintained over a longer period than in Example 2). In Example 1-4, an inclination occurred on the eighth day, but in Example 5, it was not recognized.

  As can be seen from the table, the carnation sprayed with the propellant of the present invention (Examples 3 to 5) is not sprayed (Comparative Example 1), and of course one tap with water sprayed (Comparison 1). Freshness was maintained over a longer period than in Example 2).

Claims (4)

  A spray for maintaining freshness of cut flowers, comprising an aqueous solution containing 0.001 to 1% of one or more sugars and 0.01 to 10 ppm of 6-benzylaminopurine.   The cut flower freshness-keeping spray according to claim 1, further comprising 0.01 to 5% of one or more alcohols.   The cut flower freshness-keeping spray according to claim 1 or 2, wherein the pH is 6-8. The spray for maintaining freshness of cut flowers according to claim 2, wherein the alcohol is glycerin.