JPS6295132A - Oil-in-polyhydric alcohol emulsion composition - Google Patents

Abstract

PURPOSE:To prepare the title stable and uniform emulsion by blending lisolecithin, a water-soluble polyhydric alcohol having >=2 hydroxyl groups in the molecule, and an oil-phase component to obtain the emulsion composition. CONSTITUTION:Lisolecithin and a water-soluble polyhydric alcohol having >=2 hydroxyl groups in the molecule are mixed and an oil-phase component is further incorporated to prepare the oil-in-polyhydric alcohol emulsion composition. Ethyleneglycol, 1,3-butylene glycol, diprpylene glycol, glycerin, etc., are used as the polyhydric alcohol and beef tallow, olive oil, hydrocarbons, fatty acids, etc., are used as the oil-phase component. Soybean lecithin, egg yolk lecithin, etc., can be exempleified a the lisolecithin. The total amt. of the polyhydric alcohol and lisolecithin to be used, based on the oil-phase component, is preferably adjusted to >=10wt%.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention aims to utilize lysolecithin, which is a highly safe surfactant, in a wide range of fields including oil thickening and gelling agents and emulsifiers. The present invention relates to an oil-in-polyhydric alcohol emulsion composition containing lysolecithin.

[Conventional technology]

In recent years, much research has been conducted on emulsification, new emulsifiers have been developed, and emulsification technology has progressed, and the demand for particularly safe emulsifiers has increased significantly. Highly safe emulsifiers include polyhydric alcohol fatty acid esters (R oil-based emulsifiers) such as sorbitan fatty acid ester, glycerin fatty acid ester, and propylene glycol fatty acid ester, and hydrophilic emulsifiers such as lecithin, sucrose fatty acid ester, and polyglycerin fatty acid ester. It is widely used in cosmetics, medicine, food, etc.

[Problem that the invention seeks to solve]

However, since polyhydric alcohol fatty acid esters have low HI and B, stable water-dispersible emulsions cannot be made. On the other hand, lecithin, sucrose fatty acid ester, and polyglycerin fatty acid ester have much lower emulsifying power than nonionic surfactants having polyoxyethylene chains, and it is difficult to obtain a uniform and stable emulsion. In order to obtain a stable emulsion, strong mechanical power such as a homogenizer or colloid mill is required. Therefore, it has been strongly desired to produce a uniform and stable emulsion using a highly safe emulsifier without using strong mechanical force.

[Means for solving problems]

In order to meet these demands, the present inventors have conducted repeated studies to create a stable and uniform emulsion using lysolecithin, a highly safe emulsifier, and have developed a novel polyvalent emulsion containing lysolecithin. We have discovered a composition that emulsifies oil in alcohol. That is, by combining lysolecithin, a polyhydric alcohol, and optionally a nonionic surfactant and water, and adding the oil phase components to these, the oil phase components were solubilized or uniformly dispersed as a microemulsion in the polyhydric alcohol. The present invention was completed by discovering that an oil-in-polyhydric alcohol emulsion composition can be obtained. The oil-in-polyhydric alcohol emulsion composition obtained according to the present invention is a transparent or translucent viscous liquid or gel. Further, by diluting this polyhydric alcohol-in-oil emulsion composition with water or adding water and mixing it, an oil-in-water emulsion composition with uniform fine particles can be obtained.

The polyhydric alcohol used in the present invention is a water-soluble polyhydric alcohol having two or more hydroxyl groups in the molecule, such as ethylene glycol, propylene glycol, 1,3-7' ethylene glycol, diglobylene glycol, glycerin,
Preferred examples include polyglycerols such as diglycerin, triglycerin, and tetraglycerin, glucose, maltose, maltitol, sucrose, fructose, xylitol, inositol, pentaerythritol, nrubitol, maltotriose, starch-degrading sugar, and starch-degrading sugar-reduced alcohol. Oil phase components include animal and vegetable oils and fats such as beef tallow, squalane, and olive oil, hydrocarbons, fatty acids, silicones, fluorine oil, and ingropyrmi IJ state, batyl monoisostearate, vitamin A1 acetate, and pyridoxine dioctanoate. Examples include esters such as.

In addition, the lysolecithin used in the present invention is made from vegetable lecithin such as soybean lecithin and corn lecithin, and animal lecithin such as egg yolk lecithin, and is prepared in an aqueous dispersion system.
The temperature is maintained at 5 to 57°, phospholipase is added, and the mixture is allowed to stand overnight while stirring to hydrolyze the β-position fatty acids.

Lysolecithin is used in an amount of 1.5 to 0.07 per 1 (f) of the water-soluble polyhydric alcohol.

It is desirable that the total amount of polyhydric alcohol and lecithin used be 10 wt% or more based on the oil phase components.

However, in the oil-in-polyhydric alcohol emulsion composition of the present invention, emulsifying properties can be further improved by adding a nonionic surfactant in addition to the essential components of lysolecithin, polyhydric alcohol, and oil phase components. As the nonionic surfactant, sugar or sugar alcohol fatty acid esters such as sucrose fatty acid ester and maltitol fatty acid ester, polyhydric alcohol fatty acid esters such as glycerin fatty acid ester and polyglycerin fatty acid ester are particularly preferred, but other ethylene oxide-added Nonionic surfactants such as type surfactants may also be used.

Furthermore, an anionic surfactant, a cationic surfactant, and an amphoteric surfactant may be mixed and added depending on the purpose of use. Further, for the purpose of homogeneity stabilization, viscosity adjustment, etc., water-soluble polymers such as water, alcohol, fatty acids, proteins, PEGtides, and starches may be added.

〔Effect of the invention〕

The oil-in-polyhydric alcohol emulsion composition of the present invention is a uniform, transparent or translucent gel or viscous liquid, and can be successfully used in all fields such as food, cosmetics, medicine, and feed.

Furthermore, when water is added to the above emulsified composition, a good oil-in-water emulsion is produced, and without using strong mechanical force,
A uniform, stable and highly safe emulsion can be made. This emulsion can be widely used in all fields including food, cosmetics, medicine, and feed.

〔Example〕

The present invention will be further explained below with reference to Examples, but the present invention is not limited to these Examples in any way.

Example 1 3 tons of lysolecithin was dissolved in 1 layer of glycerin, and while stirring, soybean oil 701 was gradually added to obtain a translucent gel. The viscosity increased in proportion to the amount of soybean oil added.

Example 2 5 tons of lysolecithin was dissolved in 20 tons of glycerin, and while stirring, jojoba oil 701 was gradually added to obtain a transparent gel.

When the obtained gel is dispersed in 5 tons of water, the average particle size is 0.5μ.
It became a stable emulsion.

Example 3 Lysolecithin 5f was dissolved in sorbitol 10f, and 50 t of mineral oil was gradually added while stirring to obtain a transparent gel.

When the obtained gel is diluted with 3 tons of water, the average particle size is 0.35μ.
A good emulsion was obtained.

Claims (1)

[Scope of Claims] 1. An oil-in-polyhydric alcohol emulsion composition comprising lysolecithin, a water-soluble polyhydric alcohol having two or more hydroxyl groups in the molecule, and an oil phase component. 2. The oil-in-polyhydric alcohol emulsion composition according to claim 1, wherein the ratio of lysolecithin and water-soluble polyhydric alcohol used is in the range of 1.5 to 0.07 of the former to 1 of the latter by weight.