Method for preparing low-energy SLS (sodium lauryl sulfate) type structure lipid by utilizing secondary enzymolysis

Abstract

The invention provides a method for preparing low-energy SLS (sodium lauryl sulfate) type structure lipid by utilizing secondary enzymolysis. According to the method, first grade bean oil, ethyl alcohol and acetic acid are used as raw materials; lipase Novozym 435 is utilized; then, a secondary enzyme method combing alcoholysis and esterification is adopted for preparing the low-energy SLS type structure lipid; through the method, the yield of the low-energy SLS type structure lipid can be effectively improved, and the reaction time is shortened. Compared with the structure lipid synthesized by a one-step method, fatty acid obtained by a two-step method has higher insertion rate and higher product yield. The method has the advantages that esterification process parameters such as reaction time, enzyme adding quantity, substrate mole ratio, reaction temperature and the like are optimized; the reaction is carried out in the optimum state, the acetic acid insertion rate is 64.5 percent, and the purity of low-energy grease after molecular distillation purification is 94.3 percent; the basis is provided for a subsequent industrial production low-energy grease process.

Description

Technical field [0001] The invention belongs to the field of edible oil processing, and specifically relates to a method for preparing low-energy SLS-type structural lipids by using a lipase Novozym 435 with primary soybean oil, ethanol and acetic acid as raw materials and using a secondary enzymatic hydrolysis method. Background technique [0002] Oil can give food a unique taste and flavor, and is an important part of food. It gives food a unique taste, texture, and flavor. However, high fat intake can cause heart disease, obesity, certain cancers and cardiovascular diseases, etc., serious Endangering human health. The oil substitutes and simulants on the market will affect human health to varying degrees, and the flavor and taste of some products are not easy to preserve. Therefore, the development of taste, flavor and other properties are the same as natural oils, and low-energy oils with lower calorific value have become a research hotspot. The long and short-chain fatty a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of long production cycle and low esterification rate in the current low-energy oil preparation method which can lead to heart disease, obesity, certain cancers and cardiovascular diseases, etc. , and the combination of alcoholysis and esterification to prepare low-energy oils can effectively increase the yield of structured lipids and shorten the reaction time