JPS5998001A - Preservative for cut flowers - Google Patents

Abstract

PURPOSE:A preservative for keeping cut flowers, flowers arranged in a base, branches of a blossoming tree, etc. for a long period in a living state, bursting buds successively, capable of preserving them for a long period, containing a mixture obtained by blending 2-pyridinethiol-1-oxide with a fatty carboxylic acid and a saccharide. CONSTITUTION:2-Pyridinethiol-1-oxide shown by the formula well-known as an antiseptic and antifungal agent, whose sodium salt is widely used as a dandruff inhibitor, etc., or its alkaline (earth) metal salt, is blended with a fatty carboxylic acid such as citric acid, succinic acid, etc. and a saccharide such as sucrose, glucose, etc. in a weight ratio of 1:(1-50):(100-500), diluted with water, and used for cut flowers, etc. When the concentration of an aqueous solution of the compound shown by the formula in use is 10-400ppm, it shows high antimicrobial activity against molds and bacteria, and decay of water can be prevented for a long period. The aqueous solution of it is colorless, transparent, and odorless, and it is harmless to a large number of flowers, men and beasts.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel preservative for preserving the lifespan of cut flowers, fresh flowers, and branches of flowering trees in a beautiful and fresh manner for a longer period of time than conventional agents. More specifically, cut flowers and fresh flowers characterized by containing 2-pyridinethiol-1-oxide represented by the following formula or salts thereof (alkali metal salts, alkaline earth metal salts), aliphatic carboxylic acids, and sugars. The present invention relates to the provision of a preservative for flowers and branches of flowering trees (hereinafter, unless otherwise specified, these are collectively referred to as cut flowers).

↓ P-nori flowers, fresh flowers, and branches of flowering trees are kept in water for 2.3 days to 1 day.
If left alone for more than a week, the flowers may change color, wilt, and shorten the lifespan of the flowers.The cause of this is that bacteria that occur in the water rot the cut ends.
This is thought to be due to a decrease in the water absorption function of the conduit.

Conventional methods for prolonging the lifespan of cut flowers include frequently replacing the water, cutting them underwater to improve the yield of cut flowers, crushing the cut ends, and baking them.
methods such as boiling, plant hormones such as kinetin [Science Vol. 125:
1.6-N-Benzoylaminopurine [P1ant & Ce1l
Physiology) Volume 7 (1966) No. 7
A variety of methods have been tried, including adding water (pages 05 to 706), spraying transpiration inhibitors to reduce the amount of water evaporation from leaves, and adding preservatives to prevent spoilage and turbidity of water. It is being An example of using a preservative is to add sugars to acidic sodium sulfite or ammonia alum alone or in combination.
No. 8-22358), 6-(N-benzyl)aminopurine or 6-(N-furfuryl)amitubinone, diuram agent, organic mercury agent, and antibiotics are dissolved in a small amount of water. (Japanese Patent Publication No. 45-16054), and one using a preservative consisting of potassium hydrogen sulfate, potassium hydrogen phthalate, a kind of polymerized phosphorous acetate which is acidic when made into an aqueous solution, and sugars (Japanese Patent Publication No. 47-2336)
No. 9), mixtures of one or more of tetramethylpyrazine, preservatives, and fertilizers, or those using an aqueous solution thereof (Japanese Patent Publication No. 12691/1971), 2 or 3
Contains basic organic aliphatic carbon dioxide, their alkali salts and sugars, and preservatives such as methylene bisthiocyanate and lauryl monomethylpentylammonium chloride, and has a buffering effect in the pH range of 3 to 6 when made into an aqueous solution (Special Publication No. 57) -10081), chlorcholine salt, citric acid, silver salt and N-nitrone-N-
Those containing salts of cyclohexylhydroxylamine (JP-A-47-232-44), those containing glucose, potassium aluminum sulfate, sodium aluminum sulfate, etc. (JP-A-48-18653 +4-
The main ingredients are sugars, cationic activators, ammonium alum, monopotassium phosphate and citric acid,
Contains formalin if necessary (Japanese Unexamined Patent Publication No. 1983-
1-1853 Gata Publication), those using the general formula or its salt as a preservative (Japanese Patent Application Laid-open No. 56-53601),
8-Containing oxyqui, norine, organic carboxylic acids (citric acid, etc.) and sugars [``Agriculture and Horticulture'' No. 5]
Vol. 0, No. 4 (1975), pp. 13-16, "Summary of the Autumn Symposium of the Japanese Society of Horticultural Science," No. 123-129, "Maintaining the Freshness of Cut Flowers" by the Floriculture Committee. It is already known that the lifespan of flowers can be extended by adding them.Additionally, ``Repeat'' (product name manufactured by Taisho Pharmaceutical Co., Ltd.) and ``Ikiiki'' (product name manufactured by Johnson Co., Ltd.) are already used as flower life-extending agents.
There is a product that has been put into practical use under the trade name ``Sounosei'' (product name manufactured by Palace Chemical Co., Ltd.).

However, conventional methods are not always satisfactory. In other words, just replacing the water frequently has little effect on extending the lifespan of flowers, and is also complicated. Also, cutting flowers underwater, crushing the cut ends, baking them, etc.
Methods such as boiling are difficult to process large quantities of flowers,
It is also complicated. Moreover, the flowers have no life-prolonging effect. In addition, some commercially available methods of adding preservatives have a certain degree of life-extending effect, but they are generally insufficient and can cause problems such as water buildup, rot, discoloration of flowers, wilting, and distorted appearance. Monomoa(.

The present inventors have developed a method that allows cut flowers, fresh flowers, flowering tree branches, etc. to remain fresh for a longer period of time than conventional methods, buds to bloom sequentially, and to preserve cut flowers and fresh flowers for a long period of time. We investigated various aspects. As a result, the present invention was completed.

In other words, by using 2-pyridinethiol-1-oxide as the main component of the preservative and adding aliphatic carboxylic acids and sugars to it, cut flowers can be preserved for a much longer period of time than with conventional methods or preservatives. He was able to preserve the scales and discover the scales.

The cut flower preservative of the present invention will be explained in more detail as follows.

First, to produce the preservative of the present invention, 2-pyridinethiol-1-oxide, aliphatic carboxylic acid, and sugar, which are used as the main components of the preservative, are mixed in a ratio of approximately 1:1 to 50:100 to 500. You just need to mix them in a ratio of 1. You may use this mixture diluted with water, but first dilute this mixture with a small amount of water to a high concentration (2 to 3 times), and when actually using it, dilute it with water.
It is convenient to use it by diluting it 0 to 100 times (usually about 50 times: the concentration of the main preservative component is about 10 to 400 ppm). The 2-pyridinethiol-1-oxide used is already known as an antiseptic agent, and its thorium salt and zinc salt (complex salt) are widely used in various industrial fields and as an anti-dandruff agent for hair. has been done. In the present invention, these sodium salts and zinc salts are effectively used, but other potassium salts, magnesium salts, barium salts, calcium salts, etc. may also be used. In addition, during actual use, the equilibrium of zinc salt advances to 2-pyridinethiol-1-oxide due to the addition of aliphatic carboxylic acid, and p
With H4, it becomes acid form 2-pyridinethiol-1-oxide and dissolves in water. Moreover, the sodium salt is in an equilibrium relationship with the acid form of 2-pyridinethiol-1-oxide on the acidic side. Therefore, substantially both acid type 2-pyridinethiol-1-oxide and its salts can be effectively used. These 2-pyridinethiol-1-oxides with an aqueous solution concentration of 10 to 400 ppm, preferably 40 to 1100 ppm, exhibit high antibacterial activity against a wide range of molds and bacteria, and prevent water from rotting for a long period of time. It can be prevented.

This antibacterial activity tends to be stronger in acidic regions than in neutral or alkaline regions. In this case, it is preferable to add an aliphatic carboxylic acid to adjust the pH to the acidic side. Suitable examples thereof include citric acid, succinic acid, malonic acid, maleic acid, fumaric acid, malic acid, tartaric acid, and the like. These were then diluted in water to a maximum of 0.01 to 0.
It is preferable to add it to a concentration in the range of 5%.

Sugars, such as glucose, sucrose, and fructose, may be added to this as a nutrient source so that the amount when diluted in water is 0.5 to 2%.

Thus, 2-pyridinethiol-1-oxide,
If cut flowers are kept in a solution prepared by diluting aliphatic carboxylic acids and sugars with water, the intended life-extending effect of the present invention will be exhibited.

In the present invention, types of flowers from which the effect of extending the life of cut flowers can be obtained include roses, carnations, garbage, lisianthus, chrysanthemums, dahlias, iris, sweet peas, lilacs, stock, tulips, freesia, calendula, and snapdragons. . In addition, masaki, yucanaki, boke, dogwood, flower peach, forsythia, etc. can also be used effectively. Also, various varieties of these flowers are widely effective, such as roses such as Superstar and Sonia, and carnations such as Nora and Coral. Therefore, the use of the present invention is not limited to only particular types of flowers or varieties.

In addition, as shown in the examples, the cut flower preservative of the present invention has the following advantages compared to conventional methods and commercially available cut flower preservatives:
For a long period of time, 1.5 to 5 times longer, no water decay is observed, and the flowers absorb a large amount of water, allowing the flowers to remain beautiful and fresh for a long period of time.

The cut flower preservative of the present invention is colorless, transparent and odorless when diluted with water, and is harmless to many flower species and human hoardings. Therefore, places where there is an opportunity to arrange flowers such as ordinary homes, hotels, inns, conference rooms, halls, main offices, etc., or flower growers,
It can be safely used in places such as flower shops that handle large quantities of cut flowers.

Next, the present invention will be specifically described with reference to Examples, but the present invention should not be limited only to the following Examples.

Examples The flowers tested were roses (Superstar and Sonia);
carnation () and coral), garbage, and lisianthus. In a room at 17-28°C, an aqueous solution with the following composition, a commercially available preservative (comparative example), and tap water (with and without daily water exchange) were placed in glass containers each containing 500 m of water. A book, 5 carnations,
Five Garbage plants and 12 L. Rukokiki eyes were placed in separate containers, and the number of healthy flowers after a number of days and the degree of cloudiness of the water on the last survey day were investigated using the following criteria. 100 if you use
The ratio was calculated as .

1) Test agent and its composition l 2-pyjnodinethiol-1-oxide sodium salt 0.2 citric acid
2.0 sucrose
40.02 2-pyridinethiol-1-oxide zinc salt 0.2 citric acid
2,0 sucrose
40.03 2-pyridinethiol-1-oxide sodium salt 0.5 succinic acid
160 sucrose
40.04 2-Pyridinethiol-
1- Oxide strium salt 0.2 citric acid
4.0 glucose
40.02-Pyridinethiol-1-oxide sodium salt 0.2 Tartarbutyro
2.0 fructose
40,02) Investigation criteria for water turbidity: 12-no ±: Slight (white turbidity is observed when shaken) 12-slight (some white turbidity is observed when left standing) i! -: Multi(/l Obviously /I) The results are as shown in Tables 1 to 6. Table 1 (Para Superstar) Note 1) The test agent is water-based, except for tap water. It was used after being diluted 50 times. The same applies to the table below.

Note 2) In the comparative example, an aqueous solution containing 8-oxyquinoline (0.4%), citric acid (2.0%), and sucrose (40.0%) was diluted 50 times and used.

Table 2 (Rose: Sonia) Table 3 (Carnation: Nora) Table 4 (Carnation: Coral) Table 5 (Gerbera) Table 6 (Lisianthus) Hand Dyadic Amendment 1982/θ Month 5th Commissioner of the Japan Patent Office Kazuo Wakasugi 1, Indication of the case, Patent Application No. 207594 of 1982, 2, Name of the invention 3, Relationship with the case by the person making the amendment, Patent applicant 1-9-8 Asbestos, Hokuko Sangyo Co., Ltd. 5. "Detailed Description of the Invention" column 6 of the specification subject to amendment, Contents of Amendment 1, Explanation column for the definitions of M and H in the general formula at the bottom of page 3.
"M・R" is corrected to "M and R".

2. On the third line from the bottom of the 6th page, amend ``mostly'' to ``toni''.

Claims (1)

[Claims] A cut flower preservative containing 2-pyridinethiol-1-oxide or a salt thereof, an aliphatic carboxylic acid, and a saccharide.