JPS63201101A - Preservation of plant growth regulator - Google Patents

Abstract

PURPOSE:To enable the long-term preservation of a plant growth regulator preventing the generation of microorganism, by putting and sealing a plant growth regulator in an air-permeable container and sealing the container together with a deoxidation agent in an air-impermeable outer bag, thereby controlling the oxygen concentration in the bag within a specific range. CONSTITUTION:A liquid plant growth regulator is sealed in a container made of an air-permeable synthetic resin, preferably a container made of a material having an oxygen permeability of >=2cc-mm/m<2>.24hr.atm (100% RH) (e.g. PE). The container and a deoxidation agent are sealed in an outer bag made of an essentially air-impermeable material, preferably a material having an oxygen permeability of <=30cc/m<2>.24hr.atm to keep the oxygen concentration in the outer bag and in the container and the dissolved oxygen concentration in the liquid plant growth regulator to <=0.1%. The generation of microorganism and the oxidative degradation of the regulator can be prevented and the quality of the regulator can be maintained over a long period.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for preserving a plant growth regulator, and more particularly to a method for preserving a liquid plant growth regulator using an oxygen scavenger.

[Conventional technology]

Traditionally, pesticides and the like have often been used in large quantities;
In recent years, environmental pollution of soil and the like has become a problem, and accordingly, the amount of chemicals used has also tended to decrease. For example, some herbicides are now effective at just a few grams per 10 ares. Recently, growth regulators are also effective pesticides when sprayed in small amounts. - A diluted solution is used to spray a small amount of this plant growth regulator, and the diluted solution is usually stored in a bottle or the like during storage. However, if the concentration of the plant growth regulator solution is low, microorganisms such as mold, bacteria, and yeast will grow there and alter the plant growth regulator component.

There were problems such as.

[Problem that the invention seeks to solve]

The present invention prevents the generation of microorganisms in the plant growth regulator when a liquid, particularly a low concentration liquid, plant growth regulator is stored in a container, and the plant growth regulator deteriorates over time. The purpose of this is to preserve it for a long time without having to worry about it. □ [Means for Solving the Problems] In view of the above problems, the present inventors have conducted intensive studies and have developed a method that uses a liquid plant growth regulator stored in an air-permeable synthetic resin container together with an oxygen scavenger. By packaging it in a non-breathable bag, it is possible to reduce not only the oxygen concentration in the space inside the packaging bag, but also the oxygen concentration in the space inside the container, as well as the dissolved oxygen concentration in the liquid plant growth regulator stored in the container. The present invention was completed by discovering that the content can be reduced to 0.1% or less.

That is, the present invention stores a liquid plant growth regulator in one or more containers made of breathable synthetic resin and seals them, and then encloses the container and oxygen absorber in an exterior made of non-breathable packaging material. A liquid plant that is sealed and packaged so that the oxygen concentration in the space inside the package, the oxygen concentration in the space inside the container, and the dissolved oxygen concentration in the liquid plant growth regulator are 0.1% or less. A method for preserving a growth regulator is provided.

The plant growth regulator to be preserved in the present invention is a composition that has an effect on the growth of plants, and is used by spraying on flowers or leaves of plants, or spraying on soil. Specific examples include foliar sprays, liquid fertilizers, soil treatment agents, plant hormones, soaking agents, and plant nutrients. For more information on these drugs,
For example, trace fertilizer elements such as nitrogen, phosphate, or potassium;
It contains one or more of various plant hormones such as gibberellin, amino acids, vitamins, choline or choline salts. In addition, examples of choline salts include choline hydrochloride, phosphate, polyphosphate, sulfate,
Examples include choline inorganic salts such as nitrates, silicates, and carbonates, and choline organic salts such as choline acetates, citrates, lactates, and L-tartrates. Among the above-mentioned plant growth regulators, those preferably used in the present invention are choline or its salts, and among them, choline, choline hydrochloride, or choline phosphate are particularly preferred from a practical standpoint, and choline hydrochloride is most preferred.

In the present invention, the plant growth regulator is used after being diluted in liquid form, and its concentration is not particularly limited, but in practice it is usually from o, oooi to 30% by weight, preferably from 0 to 30% by weight in water.
．． A concentration of 1 to 10% by weight is used for preservation.

In the present invention, a container made of a synthetic resin having air permeability is, for example, a bottle made of a synthetic resin having air permeability but not allowing liquid to pass through, and is practically 0.1 CC-111.
11/I11” 24hr ate (100%RH
) or more, preferably 2cc-am/m” 24hr
A material having an oxygen permeability higher than (100% RH) is used. Specifically, materials such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, and polyethylene terephthalate are preferably used. The material of the container may be a so-called multilayer container having two or more layers. Among these synthetic resin materials, polyethylene is particularly preferred in view of strength, air permeability, and the like.

The shape of the container is not particularly limited as long as it can seal the liquid, and for example, a regular screw cap bottle can be used.

In the present invention, the container containing the liquid plant growth regulator is sealed and packaged together with the oxygen absorber.

Not only one container but also a plurality of containers may be sealed and packaged in the outer package.

In the present invention, the exterior is a bag made of a substantially non-breathable material, and has an oxygen permeation rate of 100cc/a+'24hrs.
ata+ or less, preferably 30cc/m" 24hr
Bags made of packaging materials of sata+ or less are used. Examples of the gas barrier material that forms the exterior include two or more layers of plastic film, paper and plastic film, aluminum foil and plastic film, or a laminate that combines aluminum foil, paper, and plastic film. A sheet is used, with a low softening point film laminated on the inside. For example, polyethylene terephthalate/polyethylene, nylon/polyethylene, polyvinylidene chloride coated polyethylene terephthalate/polyethylene, polyvinylidene chloride coated nylon/polyethylene, polyvinylidene chloride coated oriented polypropylene/polyethylene, polyethylene terephthalate/polyethylene/paper/
Polyethylene, nylon/polyethylene/paper/polyethylene, polyvinylidene chloride coated polyethylene terephthalate/polyethylene/paper/polyethylene, polyvinylidene chloride coated nylon/polyethylene/paper/polyethylene, polyvinylidene chloride coated stretched polypropylene/
Polyethylene/Paper/Polyethylene, Paper/Polyethylene/
Polyethylene terephthalate/polyethylene, paper/polyethylene/nylon/polyethylene, paper/polyethylene/polyvinylidene chloride coated polyethylene terephthalate/polyethylene, paper/polyethylene/polyvinylidene chloride coated nylon/polyethylene, paper/polyethylene/polyvinylidene chloride coated stretched polypropylene/polyethylene , paper/polyethylene/polyvinylidene chloride/polyethylene, polyethylene terephthalate/polyethylene/aluminum foil/polyethylene, nylon/polyethylene/aluminum foil/polyethylene, oriented polypropylene/polyethylene/aluminum foil/polyethylene, aluminum foil/polyethylene/polyethylene terephthalate/polyethylene, Examples include aluminum foil/polyethylene/paper/polyethylene, and furthermore,
Polyvinylidene chloride coated cellophane/Those containing a cellophane layer such as polyethylene, Polyvinylidene chloride coated polyethylene terephthalate/Aluminum vapor deposition/Those containing an aluminum vapor deposited layer such as polyethylene, Stretched polypropylene/
For Ever (product name, made by Kuraray)/Polyethylene, Ov
(Product name) / Polyethylene, Boblon (Product name) / Polyethylene and other materials containing polyvinyl alcohol film layers, Varion (Product name) / Unstretched polypropylene, polyvinylidene chloride coated polyethylene terephthalate / Unstretched polypropylene, etc. Examples include those containing a polypropylene layer and nylon coextruded films with two to three layers.

In the present invention, in order to increase the efficiency of removing oxygen in the space inside the synthetic resin container and dissolved oxygen in the plant growth regulator solution, the oxygen permeability of the exterior must be higher than the oxygen permeability of the synthetic resin container. It is preferable to select materials so as to reduce the size.

The oxygen scavenger used in the present invention is a composition that absorbs oxygen in contact with air and is housed in a breathable pouch or container, such as sulfite, hydrogen sulfite, ferrous salt dithionite. Main ingredients include salt, hydroquinone, catechol, resorcinol, pyrogallol, gallic acid, rongalite, ascorbic acid and/or its salts, isoascorbic acid and/or its salts, sorbose, glucose, lignin, dibutylated hydroxytoluene or butylated hydroxyanisole, etc. Oxygen scavengers, oxygen scavengers whose main ingredient is metal powder such as iron powder, etc. are used.

Among these, oxygen absorbers containing iron powder as a main ingredient are particularly preferred.

In the present invention, since there is substantially no moisture in the space in which the oxygen absorber is stored, a self-reacting oxygen absorber is particularly preferably used. Note that a self-reactive oxygen absorber is a type of oxygen absorber that exhibits an oxygen absorbing effect without using the moisture in the stored item, and the moisture content in the composition is set high. be.

To perform the preservation method of the present invention, the liquid plant growth regulator is stored in the air-permeable container and sealed, and then the container and the oxygen absorber are sealed and packaged in the exterior made of the non-air-permeable packaging material. and save it.

In the present invention, it is also preferable that a plurality of air-permeable containers containing a liquid plant growth regulator, for example 10 to 20, shrink-wrapped with plastic films such as polyethylene films are housed in the exterior packaging together with an oxygen absorber. It is a mode.

Furthermore, the preservation method according to the present invention can be suitably used as a means for intermediate distribution, especially in the form of storing a plurality of containers.

〔Example〕

The present invention will be explained in more detail with reference to Examples below.

Example 1 A 2% solution of choline chloride was poured into a 100 ml polyethylene bottle, the bottle was capped, and an iron-based oxygen scavenger (oxygen absorption capacity 50 m
1) was placed in a bag made of KPET (polyvinylidene chloride coated polyester, 12μ)/CPP (unstretched polypropylene, 70μ) film (trade name: Doybag) and the opening was heat-sealed. This was stored at room temperature for 3 years, but no microorganisms were generated and there was no change in medicinal efficacy.

Comparative Example 1 A 2% solution of choline chloride was placed in a 100 ml polyethylene bottle, the bottle was capped, and the bottle was stored at room temperature.
Four days later, mold appeared.

〔Effect of the invention〕

According to the present invention, by the action of the oxygen scavenger, it is possible not only to absorb and remove oxygen that enters through the exterior, but also to reduce the concentration of oxygen present inside the exterior to 0.1% or less,
Deoxygenation inside the container containing the liquid plant growth regulator is carried out through the surface of the container, reducing the oxygen concentration in the air in the space inside the container and the dissolved oxygen concentration in the liquid plant growth regulator to 0.1. % or less. Therefore, according to the present invention, generation of microorganisms and oxidative deterioration can be prevented in the liquid plant growth regulator, and the quality thereof can be maintained for a long period of time.

[Brief explanation of the drawing]

FIG. 1 shows an example (front view, side view, and perspective view) of preserving the liquid plant growth regulator according to the present invention. In the figure, 1. Exterior 2. Container 3 containing a liquid plant growth regulator 3. Oxygen absorber 11 A seal portion of the exterior casing.

Claims (1)

[Claims] After storing the liquid plant growth regulator in one or more containers made of breathable synthetic resin and sealing them, the containers and the oxygen absorber are hermetically packaged in an outer case made of non-breathable packaging material, and then the outer container is sealed. Preservation of a liquid plant growth regulator, characterized in that the oxygen concentration in the interior space, the oxygen concentration in the interior space of the container, and the dissolved oxygen concentration in the liquid plant growth regulator are 0.1% or less. Method.