JPS5863374A - Covering composition - Google Patents

Abstract

PURPOSE:A covering composition useful as farm products, marine products, livestock products, etc., having improved covering properties and storage stability, obtained by emulsifying or solubilizing wax, fats and oils in an aqueous solution of a polyhydroxy compound in the presence of protein, etc. CONSTITUTION:(A) Protein (its decomposition product) and/or surface active agent(e.g., sodium caseinate, sucrose fatty acid ester) and (B) a polyhydroxy compound(e.g., sorbitol, glycerol) are dissolved in water. (C) Wax and/or fats and oils(e.g., beeswax, hardened soybean oil) made solid by heating are emulsified or solubilized gradually with stirring in water which is heated at >= the melting point of the wax to be added to give a covering composition.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coating composition, and more particularly to a coating composition for application to agricultural products, marine products, livestock products, or processed products thereof.

Conventionally, there has been a concept of applying an emulsion in which wax or oil is emulsified in an aqueous phase to, for example, eggs, fruits, vegetables, fish, etc., to maintain freshness, improve storage stability, and prevent diseases. Although it seems that some emulsions have already been put into practical use, conventional emulsions are unstable;
The current situation is that we are not necessarily getting the desired results.

The present inventor has conducted intensive studies to improve the instability of conventional coating compositions made of emulsions of oils, fats, and waxes, and as a result, has arrived at the present invention.

That is, in the coating composition of the present invention, waxes and/or fats and oils are emulsified or solubilized in a polyhydroxy compound or an aqueous solution thereof in the presence of a protein, a protein decomposition product, and/or a surfactant. It is characterized by this.

The coating composition of the present invention will be explained in detail below.

The waxes and fats and oils that can be used in the coating composition of the present invention include, for example, vegetable waxes such as carnauba wax, carnauba wax, rice bran wax, and soybean wax; animal waxes such as spermaceti wax and beeswax;
Resins such as Sandarak, Shellak, Mil 2, Norsum, etc., such as vinyl acetate resin, synthetic resins such as low molecular weight polyethylene, solid paraffin, α-olefin oligomers, extremely hardened or partially hardened resins with a melting point higher than room temperature. Vegetable oils and animal fats such as extremely hardened soybean oil and beef tallow with a melting point of 53°C can be mentioned.

Examples of proteins used in the present invention include water-soluble proteins such as sodium caseinate, soybean protein, skim milk powder, whey powder, raw egg white, dried egg white, blood meal, meat meal, microbial protein, peptone, yeast extract, albumin, lactalbumin, globulin, lactoglobulin, globulin, pronumin,
Examples include histamine, and as the protein decomposition product, those obtained by decomposing the above-mentioned proteins using protease, acid, etc. can be used.

Furthermore, various surfactants such as anionic, nonionic, cationic, and amphoteric surfactants can be used. Examples of anionic surfactants include soap N-acylamino acid salts, alkyl ether carboxylic acids, carboxylic acid salts such as acylated bephus, alkyl sulfo/acids, alkylbenzene sulfonates, alkylnaphthalene sulfonates, and formalin condensates thereof. , dialkyl sulfosuccinic acid ester salts, α-olefin sulfo/acids, sulfonates such as N-acylmethyltaurine, e.g. grinding oils, alkyl sulfates, alkyl nyf/'a acid salts, alkyla I7 phenite sulfates, alkyl Sulfuric acid ester salts such as amide value acid salts, for example, phosphoric acid ester salts such as alkyl phosphates, alkyl ether phosphates, and alkyl allyl ether phosphates, and the like. Examples of nonionic surfactants include polyoxyethylene alkyl ether, polyoxyethylene secondary alcohol ether, polyoxyethylene alkylphenyl ether,
Ether-type activators such as ethylene oxide derivatives of alkylphenol formalin condensates, polyoxyethylene polyoxy-7 propylene polymers, polyoxyethylene glycerin fatty acid esters, polyoxyethylene, ethylene castor oil and hydrogenated castor oil, polyoxyethylene Ether ester type active agents such as tyrene sorbitol fatty acid ester, polyoxyethylene sorbitol fatty acid ester, etc.
Examples include ester-type active agents such as fatty acid monoglycerides, sorbitan fatty acid esters, and sucrose fatty acid esters, and nitrogen-containing active agents such as fatty acid alkanolamides, polyoxyethylene fatty acid amides, polyoxyethylene alkyl amines, and alkylamine oxides. Examples of cationic surfactants include alkylamine salts, quaternary ammonium salts, benzalkonium salts, pembytonium chloride, and pyridinium salts, and examples of amphoteric surfactants include carboxypetai/type surfactants,
Examples include sulfobetaine type, aminocarboxylic acid salts, imidazolinium betaine, lecithin, etc. In addition, □, fluorine-based surfactants, silicone-based surfactants, etc. can also be used.

The composition of the present invention uses one or more selected from the group consisting of proteins, protein decomposition products, and surfactants as essential components, and among these, proteins and protein decomposition products such as sodium caseinate are particularly used. It is preferable to use

Furthermore, polyhydroxy compounds include, for example, dihydric alcohols such as propylene glycol, trihydric alcohols such as glycerin, sugar alcohols such as sorbitol and mannitol, monosaccharides such as glucose, 7-lactose, sucrose, maltose, and caractose. Isodisaccharides and trisaccharides and higher oligosaccharides, various invert sugars obtained by hydrolysis of starch, starch syrup, dextrin, isomerized sugar, syrup, honey, jams, etc. can be used. As the liquid polyhydroxy compound, one selected from the above-mentioned polyhydroxy compounds that is liquid at room temperature, such as propylene glycol, glycerin, etc., can be used.

Regarding the usage ratio of each component of the present invention, one or more components selected from the group consisting of protein, protein decomposition product, and surfactant are used in proportion to the total amount of protein, protein decomposition product, and surfactant. , oos% (the same below weight basis) or more, preferably Fio, osti or more, particularly preferably 5- or less, and the polyhydroxy compound is 20% or more, preferably 30ti or more with respect to the above total amount, e.g. When using a liquid polyhydroxy compound, 100
It is possible to reach close to %. The amount of waxes and/or fats and oils may be up to about 90% of the total composition, but is preferably Fi 30 to 70%.

The coating composition of the present invention can be produced in a liquid state, a non-flowable paste state, or The physical properties can be changed to a gel-like state, and various additional components can be further included if necessary.

The coating composition of the present invention contains a polyhydroxy compound or an aqueous solution thereof, for example, when they are in a liquid state and 1. For example, waxes or Fi/ and fats and oils are kept at a temperature in a liquid state, and while stirring, waxes or ill/
It can be obtained by gradually adding oils and fats and emulsifying or solubilizing them.

- In producing this emulsified or solubilized composition, it is essential to have proteins, protein decomposition products, or surfactants present in the system, and these are maintained at a temperature where they are in a liquid state, for example. It may be added into waxes and/or oils and fats, or may be added, for example, into a polyhydroxy compound or an aqueous solution thereof maintained at a temperature in a liquid state, but the latter is preferred.

For example, a homomixer may be used for mixing and stirring for emulsification or solubilization, if necessary, and emulsification or solubilization can be further stabilized by passing through a homogenizer.

The coating composition of the present invention has waxes and/or oils and fats emulsified or solubilized as very fine particles and has excellent oral stability. The coating performance of the coating is effectively demonstrated.

Furthermore, the coating composition of the present invention can be easily emulsified or dispersed in water simply by adding it to water and stirring, and can be used to prepare a stable composition in which a small amount of wax or oil is emulsified or dispersed in a large amount of water. can also be used.

Specific uses of the coating composition of the present invention include, for example, preserving and preserving eggs, preserving the freshness of agricultural products such as fruits and vegetables, preventing plant diseases, killing insects, fertilizing leaves, preventing mold, and spreading pesticides. ,
For preventing frost damage on tea cakes, for keeping fish and meat fresh and preserving, for covering fruit bags 1, for polishing, for mold release, for baking oil, for coating various foods, for water-repellent coating, for metal coating, etc. It can be used for various purposes.

Examples of the present invention will be shown below to specifically clarify the effects of the present invention.

Example 1 A solution was prepared by dissolving 5f of sodium caseinate and 200t of D-sorbitol in 959ml of water.

This was heated to 70℃, and 100 beeswax heated to the same temperature
The mixture was stirred while gradually adding t to obtain a solubilized product. When the obtained solubilized material was cooled, a suspension was obtained.

When this composition was applied to eggshells, a high-quality coating was obtained, and it was extremely effective in preventing eggshell breakage and maintaining egg quality.

Example 2 A solution was prepared by dissolving 5f of sucrose fatty acid ester and 150f of invert sugar (purity: 70%) in 959ml of water. This was heated to 85° C. and stirred while gradually adding 50 t of carnauba wax heated to the same temperature to obtain a solubilized product. When the resulting solubilized product was cooled, a suspension was obtained, into which an orange was immersed for 1 to 2 seconds and immediately withdrawn to form a film on the surface of the orange. Oranges treated in this way were kept fresher for a longer period of time than untreated oranges.

Similar results were obtained for apples, oysters, and pears.

Example 3 Sodium caseinate 52 was dissolved in glycerin 952, and α-olefin oligomer 3of was added thereto and mixed to obtain a solubilized product. The obtained solubilized product was a liquid with a slightly transparent appearance. This was diluted appropriately with water, applied to fruit wrapping paper, and air-dried to form a film. Fruit packaging was created using this wrapping paper. This fruit mount was ideal for wrapping fruits such as apples and pears, and was able to grow high-quality fruits.

Furthermore, by adding an insecticidal component or a bactericidal component to the solubilized product, it was possible to obtain fruit pods having insecticidal and bactericidal properties.

Example 4 A solubilized product obtained in the same manner as in Example 1 was diluted with water, and a sausage cased with a semipermeable membrane was soaked therein, and dried to obtain a sausage with good shelf life.

Example 5 A solubilized product obtained in the same manner as in Example 1 was diluted with water, and soaked peanuts were soaked in the solubilized material and dried to obtain peanuts with good storage stability.

Example 6 A solubilized product obtained in the same manner as in Example 1 was diluted with water, and harvested corn was soaked therein and dried to obtain corn with good shelf life.

Example 7 A solubilized product obtained in the same manner as in Example 1 was diluted with water, and shrimp were soaked in the solution and dried to obtain shrimp with improved preservability.

Example 8 A solubilized product obtained in the same manner as in Example 1 was diluted with water and sprayed on unpolished rice to obtain rice with good shelf life by drying.

Example 9 When the solubilized product obtained in the same manner as in Example 1 was diluted with water and sprayed on tea leaves, frost damage to the tea leaves could be prevented.

Example 10 In the same manner as in Example 2, rice cakes were immersed in a suspension obtained by diluting the solubilized product with water and dried to obtain rice cakes with good storage stability.

Example 1-1 A suspension obtained by diluting the solubilized material with water in the same manner as in Example 2 was sprayed on adzuki beans and dried to obtain adzuki beans with good shelf life.

Example 12 When the solubilized product obtained in Example 3 was diluted with water and applied or dipped onto the surfaces of plant roots, stems, leaves, flowers, bulbs, seeds, etc., roots, stems, leaves, etc. It was possible to prevent the wilt of the leaves. Furthermore, the efficacy increased when a preservative and fungicide was added. Example 13 0.3 f of colloidal sulfur and 0.1 f of ethylene bisdithiocarbamate were added to the solubilized material obtained in Example 3,
A dilution with water was prepared.

This was sprayed on young apple trees three times at 40-day intervals between days 5 and 8, and despite being washed away by wind and rain, it was sufficiently effective in preventing the disease. In other words, it was excellent as a spreading agent for agricultural chemicals.

Claims (1)

[Claims] A coating composition characterized in that waxes and/or fats and oils are emulsified or solubilized in a polyhydroxy compound or an aqueous solution thereof in the presence of a protein, a protein decomposition product, and/or a surfactant.