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Method for preparing diglyceride

A technology of diglyceride and monoglyceride, applied in the field of preparation of diglyceride, can solve the problems of a large number of chemical reagents or organic solvents, unsuitable requirements for clean production, green environmental protection, lack of specificity of the reaction, etc. The effect of production cost, reduction of raw material cost, and improvement of reaction rate

Inactive Publication Date: 2014-11-05
JIANGXI HUAMIN OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of specificity of the reaction, the resulting product is a mixture of 1,2- and 1,3-diglycerides, usually in a ratio of 7:3~6:4
Therefore the method usually cannot predict where the fatty acid will be incorporated in the final product
Although 1,3-diglyceride with a special structure can also be produced through a specific chemical reaction, protective agents are required, the reaction steps are complicated and lengthy, and a large amount of chemical reagents or organic solvents are required, which is undesirable for the food and pharmaceutical industries , it is not suitable from the perspective of clean production and green environmental protection requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Put 35% glycerol, 7% monoglyceride, and 58% oil in a round-bottomed flask, add ipozyme RM IM immobilized lipase with 5% of the total substrate, and react at 60°C and a vacuum of 0.09MPa The reaction was carried out in the container for 8 hours, and samples were taken to measure the DAG content and FFA residual content respectively, and the diglyceride content was obtained to be 66%; then the above product was separated by molecular distillation to obtain a diglyceride purity of 96%.

[0018]

example 2

[0020] Put 34% of glycerin, 8% of monoglyceride, and 58% of oil into the reactor together, add 6% of ipozyme RM IM respectively, and react for 9 hours at 55°C and a vacuum of 0.09MPa. Samples were taken to measure the DAG content and the residual FFA content, and the diglyceride content was 68%; then the above product was separated by molecular distillation to obtain a diglyceride purity of 97%.

example 3

[0022] Put 36% of glycerin, 6% of monoglyceride, and 58% of oil into the reactor together, add 4% ipozyme RM IM respectively, and carry out the reaction at 53°C and a vacuum of 0.09MPa for 10 hours. Samples were taken to measure the DAG content and the residual FFA content, and the diglyceride content was obtained to be 70%; then the above product was separated by molecular distillation to obtain a diglyceride purity of 97%.

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PUM

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Abstract

The invention provides a novel method for preparing diglyceride. The diglyceride is prepared from the following raw materials in percentage by mass: 33-36 percent of glycerinum, 5-8 percent of monoglyceride and 56-60 percent of grease. The preparation method comprises the following steps: adding the raw materials into a reactor, and adding lipase to perform an enzymatic reaction to obtain the high-purity diglyceride after the reaction is completed. The method is capable of improving the reaction speed and reducing production cost, and has a potential industrial application prospect.

Description

technical field [0001] The invention relates to a method for preparing diglyceride, which belongs to the field of food chemical industry. Background technique [0002] Diacylglycerides can reduce serum triglycerides in humans and mice, and can be used to prevent and treat hyperlipidemia and cardiovascular and cerebrovascular diseases closely related to hyperlipidemia, such as arteriosclerosis, coronary heart disease, stroke, and cerebral thrombosis. This function is mainly achieved by inhibiting the accumulation of triglycerides in the body; diglycerides can no longer form triglycerides with fatty acids in the body, reducing the accumulation of triglycerides in the body. In the pharmaceutical industry, in addition to being used as an auxiliary component of emulsions and powders, diglycerides can also be directly combined with drugs to accelerate drug absorption and control drug release. [0003] The synthesis of diglyceride mainly includes chemical method and enzymatic meth...

Claims

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Application Information

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IPC IPC(8): C12P7/64
Inventor 冷国华徐伟水
Owner JIANGXI HUAMIN OIL
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