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Method for enzymatic synthesis of glucose ester of fatty acids in organic phase

A fatty acid ester and glucose technology, applied in fermentation and other directions, can solve the problems of light color of reaction selectivity products, difficult separation and purification, complex products, etc., and achieve the effects of mild conditions, high reaction efficiency, and increased yield.

Inactive Publication Date: 2008-07-23
JIANGNAN UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0004] Currently commercially available sugar esters are mainly synthesized by chemical methods. Usually, the yield is low, the product is complex, separation and purification are difficult, and the product is dark in color. However, the enzymatic synthesis of sugar esters has high reaction selectivity, mild conditions, and few by-products. , The product is light in color and easy to purify, etc.

Method used

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  • Method for enzymatic synthesis of glucose ester of fatty acids in organic phase

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] At the beginning of the reaction, when the amount of enzyme added in the reactor is 30g / L, lauric acid is used as raw material, the acid-alcohol ratio is 1:5, the molecular sieve amount is 68g / L, the glucose concentration is 50mmol / L, and the reaction is performed in a 50°C shaking water bath at 150rpm After 30 hours, glucose laurate was obtained, and the yield of glucose monoester reached 82% as detected by HPLC, and the purity of monoester obtained after separation and purification reached more than 99%.

Embodiment 2

[0039] Embodiment 2: The reaction conditions are the same as in Example 1, and using myristic acid as a raw material, glucomyristate is obtained.

Embodiment 3

[0040] Embodiment 3: Reaction condition is the same as embodiment 1, is raw material with palmitic acid, obtains glucopalmitate.

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Abstract

The invention relates to a synthesis method of a glucose fatty acid ester by the enzyme catalysis in an organic phase, belonging to the food biochemical technical field, which is characterized in that a glucose lauric acid ester, a glucose myristate, a glucose ascorbyl palmitate and a glucose stearate are respectively catalyzed and synthesized in an acetone with a fatty enzyme NOVO435, identifying the optimized production process conditions and the product separation and purification method. The transformation of the glucose lauric acid ester is up to 80.2%, the purity of the monoester is over 99% after separation and purification under the optimized process conditions. The synthesis method of the glucose fatty acid ester by the enzyme catalysis in an organic phase has the advantages of moderate conditions, high transformation rate, easy separation and purification, and green security.

Description

technical field [0001] The invention relates to a method for synthesizing non-ionic surfactant glucose fatty acid ester catalyzed by lipase in an organic phase, which belongs to the technical field of food biochemical industry. Background technique [0002] Glucose fatty acid ester is a kind of edible non-ionic surfactant with special properties formed by the condensation of glucose and fatty acid. Glucose fatty acid esters can be widely used in the food industry, pharmaceutical industry, cosmetic industry and washing industry because of their good surface activity, non-toxicity, easy biodegradation, and wide range of HLB values. [0003] In my country, there is no report on the enzymatic synthesis of glucose fatty acid ester in acetone, but there are reports on the synthesis of sugar ester in other solvents such as tert-butanol solvent, and it is limited to the research of the synthesis process, and there is no separation of glucose fatty acid ester Purification method. Su...

Claims

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Application Information

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IPC IPC(8): C12P19/00
Inventor 张晓鸣冯骉贾承胜李霞张文斌
Owner JIANGNAN UNIV
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