SU620474A1 - Method of isolating highly concentrated monoglycerides - Google Patents

Description

This invention relates to an improved method for isolating highly concentrated monoglycerides. Monohycerides, possessing various kf and properties of pb-active substances, are widely used in many areas of the food industry.

Methods are known for isolating monoglycerides from various glyceride mixtures by molecular distillation, chromatography, dialysis, countercurrent distribution, and multiple crystallization.

The most realistic in the industry are molecular distillation and crystallization methods.

However, with (distillation), complicated equipment is required.

A known method for isolating monoglycerols from a glyceride mixture obtained by esterifying glycerol with stearic acid yij. The isolation process is as follows.

The glyceride mixture is dissolved in ethyl ether, the ether layer is somewhat

washed with saturated sodium sulfate solution from unreacted glycerin, then the ether layer is washed with saturated sodium bicarbonate solution and dissolved in anhydrous sodium sulfate. The ether is then distilled off in vacuo. This isolation method makes it possible to obtain 60% of the monoglycerides. Further, these monoglycerides are subjected to low-temperature crystallization (temperature -) from absolate methanol. Get monoglycerides with a content of 8O-85% monoether.

The specified method is multi-stage, in its implementation it is necessary to use two different solvents and it is impossible to obtain sufficient pure product.

Claims (2)

The closest to the described invention to the technical essence of the R achieved result is a method of isolating highly concentrated monoglycerides, which consists in dissolving the hypteride mixture, its 30% 65% monoglycerides, in methanol containing 10% of water, precipitating diglyceride crystals and filtering off the residues, in methanol containing 10% of water, precipitating diglyceride crystals and filtering out the residues, in methanol containing 1O% of water, precipitating diglyceride crystals, filtering out the residues, in methanol containing 1O% of water, precipitating diglyceride crystals, filtering out the residues, in methanol containing 1O% of water, precipitating diglyceride crystals, filtering out the residues, in methanol containing 10% of water, precipitating diglyceride crystals, filtering out the residues, leaving 100% water, filtering the precipitated diglyceride, in the presence of methanol, leaving 10O% water. the filtrate is distilled methanol. The solid which remained after the distillation of methanol was dissolved in methanol containing SO-6O% water, after which the solution was cooled and filtered. Methanol is distilled off from the filtrate to obtain a monoglyieride containing 8O-9O% base material. The disadvantage of the IZEYUST method is the multistep process and the need to use methanol solutions of various concentrations. The chain of the invention is a simplified process and an increase in the yield of the desired product is achieved according to the described method of obtaining highly concentrated monoglycerides, concluded in that the glyceride mixture containing 30% monoglycerides of GO is dissolved in a menolar organic solvent (for example, benzene, hexane, petroleum solvent). ChlorO1 ormo, carbon tetrachloride and alkali usually in a ratio of 1-3 at the temperature of an appropriate solvent, i.e. at 40-7 ° C. After separation of the glycerin layer, the mixture is cooled to 19- O C, while monoglyceride B1 1 is precipitated. The residues of the desired product are removed from the polymer and dried. Yield 95-1. Distinctive features of the method are using non-polar solvent, usually taken in 3-7-fold excess relative to the initial glyceride mixtures, carrying out cristoplization at 19–30 C. fl r i me r 1. In a thermostated flask with a stirrer, reverse cold and HCOs and lower descent are charged with 1O, O g of the initial glyceride mixture containing 4O9o monoether and 7O, 0 g of benzene. Sotsorimoe holsi Namrvshot stirring to 6 -65 ° C until complete dissolution of the mass. When this occurs, the separation of the mass into two layers: the bottom - glycerin, the upper solution of glycerides in benzene. The bottom layer is drained, and the top is slowly cooled to 20-19 ° C. The precipitated monoglyceride crystals are filtered and dried. The product contains 98.2% monoester. PRI me R 2, In a thermostated flask (for example l), load 1O, Og of a glyceride mixture containing 65% mono ether and 50, O g of hexane. Further, the extraction is carried out in the same way as with primer 1, gradually cooling the solution to a temperature of 29-30 ° C. The monoester content is 99.2%. Example 3. In a thermostated flask (according to Example 1), 10.0 g of a glycerne mixture containing 42% monoether and .30.0 g of petroleum ether (bucket 4O-70 sec) are loaded. Next, the selection of monoglycerides is carried out analogously to example 1. The content of monoether is 98.0%. According to the described method, highly concentrated monoglyidides are obtained in high yield. Technological The scheme for isolating highly concentrated monogpideridov is simple and easy to maintain. Regeneration of only one solvent is possible. Highly concentrated monogliderides obtained by the described method are effective additives in bakery, confectionery, pasta, margarine, dairy and other products. They help to improve the quality and lengthen the shelf life, as well as allow to intensify the technological processes of food production. The use of highly concentrated monoglycerides tolyso in the production of bis-shsit cakes can give an economic effect of 24 rubles. on 1t. The use of highly concentrated monoglycerides will increase the effect of their action in food. Claim 1. Method of isolating highly concentrated monoglycerides by treating a glyceride mixture containing 30-65% monoglycerides with an organic solvent followed by crystallization of the target product, characterized in that, to simplify the process and increase the yield of the target product, nonpartial is used as the organic solvent. the organic solvent and the treatment process are carried out at 40 ° -7 ° C, and the crystallization at m. 19-30 ° 2. A method according to claim 1, wherein t and h and h and the fact that chloroform is used as the non-polar solvent. 562О4746 benzene, cyclohexane, hexane, four-l.Tt-C BazuTioyctioudhuri.Science petroleum carbon, petroleum ether, etc. and Cufcture, 2O, 8 -f955 395-397 Sources of information accepted by v2. US Patent No. 2727913 vrimaniya during examination: Cl. 26O-41O.7. 1955.