Preparation method of polyglycerin ester

A technology for tripolyglycerol ester and tripolyglycerol, which is applied in the field of immobilized lipase and phospholipase A1 to catalyze the preparation of tripolyglycerol ester, can solve the problems of low product purity, low esterification rate, and low use times of enzymes, and achieves the The effect of high purity, low cost and easy separation

Active Publication Date: 2015-04-08
GUANGZHOU CARDLO BIOCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still needs to consider issues such as catalyst cost, catalytic efficiency and the development of new reactors.
At the same time, there are technical problems such as low esterification rate, low use of enzymes, and low purity of the obtained product, which have become the main technical difficulties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]Heat 10kg of glycerin and 9g of strong acidic cation exchange resin (D001SS macroporous strong acidic styrene-based cation exchange resin) to 110°C and keep constant, add 20kg of glycidol dropwise, keep the vacuum at 10pa for 3 hours, and then cool to below 80°C. Remove the product, seal and continue to cool to room temperature, filter and recover the resin, the filtrate is the crude triglycerin product, pour the crude triglycerin prepared by the reaction into the storage tank for primary molecular distillation, at a pressure of 15 pa, the speed of the scraping film 250 r / min, flow rate 3 drops / s, condensation temperature 50 ℃, and storage tank temperature 80 ℃ for distillation, the distilled light phase product is glycerin, and the heavy phase product obtained by distillation is poured into the cleaned The storage tank is subjected to two-stage molecular distillation, and the distillation is carried out under the conditions of pressure 8pa, film scraping speed 250 r / min,...

Embodiment 2

[0031] Heat 10kg of glycerin and 9g of strong acidic cation exchange resin (D001SS macroporous strong acidic styrene-based cation exchange resin) to 110°C and keep constant, add 20kg of glycidol dropwise, keep the vacuum at 10pa for 3 hours, and then cool to below 80°C. Remove the product, seal and continue to cool to room temperature, filter and recover the resin, the filtrate is the crude triglycerin product, pour the crude triglycerin prepared by the reaction into the storage tank for primary molecular distillation, at a pressure of 15 pa, the speed of the scraping film 250 r / min, flow rate 3 drops / s, condensation temperature 50 ℃, and storage tank temperature 80 ℃ for distillation, the distilled light phase product is glycerin, and the heavy phase product obtained by distillation is poured into the cleaned The storage tank is subjected to two-stage molecular distillation, and the distillation is carried out under the conditions of pressure 8pa, film scraping speed 250 r / min...

Embodiment 3

[0034] Heat 10kg of glycerin and 9g of strong acidic cation exchange resin (D001SS macroporous strong acidic styrene-based cation exchange resin) to 110°C and keep constant, add 20kg of glycidol dropwise, keep vacuum 10pa for 2 hours, and then cool to below 80°C. Remove the product, seal and continue to cool to room temperature, filter and recover the resin, the filtrate is the crude triglycerin product, pour the crude triglycerin prepared by the reaction into the storage tank for primary molecular distillation, at a pressure of 10 pa, the speed of the scraping film 250 r / min, flow rate 3 drops / s, condensation temperature 50 ℃, and storage tank temperature 80 ℃ for distillation, the distilled light phase product is glycerin, and the heavy phase product obtained by distillation is poured into the cleaned The storage tank is subjected to two-stage molecular distillation, the flow rate is 2 drops per second under the conditions of pressure 6 pa, film scraping speed 250 r / min, cond...

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Abstract

The invention relates to a method for preparing polyglycerin ester under the catalytic action of immobilized lipase and phospholipase A1. The method specifically comprises the following steps: firstly preparing tripolyglycerol, and then reacting with fatty acid in the presence of the immobilized lipase and the phospholipase A1. The polyglycerin ester is efficiently prepared under a heterogeneous and high-viscosity reaction system; various materials are easy to separate and can be recycled, thus the cost is reduced; the obtained polyglycerin ester is high in yield; the esterification rate can be over 97%; the obtained polyglycerin ester is high in purity; and the content of free fatty acid is smaller than 0.1%.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to a method for preparing triglycerides by catalyzing immobilized lipase and phospholipase A1. Background technique [0002] Polyglycerol fatty acid ester (referred to as polyglycerol ester, PGFE) is an ester formed of polyglycerol and fatty acid, and its structure varies according to the degree of polymerization of glycerin, the type of fatty acid and the degree of esterification. Polyglycerol ester is a polyhydroxy ester nonionic surfactant. Because its hydrophilicity increases with the increase of the degree of polymerization of glycerin lipids, and the lipophilicity varies with the difference of fatty acid lipids, so by changing the degree of polymerization of glycerin, the Depending on the type and degree of esterification, surfactants with different properties can be obtained with HLB values ​​ranging from 1 to 16. The interval can be adjusted arbitrarily, so it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/64
CPCC12P7/6454
Inventor 徐怀义
Owner GUANGZHOU CARDLO BIOCHEM TECH
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