A kind of preparation method of epoxy fatty acid glyceride

A technology of epoxidized fatty acid glyceride and fatty acid glyceride, which is applied in directions such as fermentation, can solve the problems of low yield, many side reactions in epoxidation process, etc., and achieves high yield, good economy and environmental protection, and preparation technology. simple effect

Active Publication Date: 2020-08-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of the existing fatty acid glyceride oil enzymatic epoxidation process with many side reactions and low yield, the present invention provides an esterase-catalyzed fatty acid glyceride epoxidation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add soybean oil 900g, hydrogen peroxide (containing 30% hydrogen peroxide) 150g, AFEST esterase 9g, glycerin 500g in reaction container, carry out epoxidation reaction with the stirring speed of 600rpm in the constant temperature magnetic stirrer of 40 ℃ for 24h. After the reaction is over, the reaction mixture is centrifuged (or settled) to separate and recover the oil phase and the glycerin phase. After testing, its acid value is 0.25 mg KOH / g, and its epoxy value is 6.1. Composition of epoxy fatty acid glyceride in the product through liquid chromatography analysis, epoxy fatty acid triglyceride is 84.1%, the content of epoxy fatty acid diglyceride is 1.2%, and the content of epoxy fatty acid monoester is 0.2%.

Embodiment 2

[0028] Add soybean oil 900g, hydrogen peroxide (containing hydrogen peroxide 30%) 250g, PestE esterase 9g, glycerin 450g in reaction vessel, carry out epoxidation reaction with the stirring speed of 600rpm in the constant temperature magnetic stirrer of 50 ℃ for 24h. After the reaction is over, the reaction mixture is centrifuged (or settled) to separate and recover the oil phase and the glycerin phase. After testing, its acid value is 0.12mgKOH / g, and its epoxy value is 7.4. The content of epoxy fatty acid triglyceride in the product analyzed by liquid chromatography-mass spectrometry is 96.5%, and the content of epoxy fatty acid diglyceride and monoester is 1.0%.

Embodiment 3

[0030] Add soybean oil fatty acid diglyceride 900g in reaction vessel, hydrogen peroxide (containing hydrogen peroxide 30%) 300g, EstE1 esterase 9g, glycerin 900g, carry out epoxidation with the stirring speed of 600rpm in the constant temperature magnetic stirrer of 60 ℃ Reaction 24h. After the reaction is over, the reaction mixture is centrifuged (or settled) to separate and recover the oil phase and the glycerin phase. After testing, its acid value is 0.16mgKOH / g, and its epoxy value is 7.2. The composition of epoxy fatty acid glyceride in the product was analyzed by liquid chromatography, the content of epoxy fatty acid diglyceride was 94.1%, and the content of epoxy fatty acid monoglyceride was 1.3%.

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Abstract

The invention discloses a preparing method for epoxy fatty glyceride. The preparing method comprises the following steps that 1, esterase serves as a catalyst, glycerin serves as a reaction auxiliary, and fatty glyceride and hydrogen peroxide are subjected to an epoxidation reaction; 2, a reaction product is separated, and an oil phase is recovered, so that epoxy fatty glyceride is obtained. Epoxy fatty glyceride is not subjected to side reactions such as hydrolysis and glycerolysis, and therefore the yield of epoxy fatty glyceride is high. The product is single, the production process is easy to control, the product is easy to separate and recover, and the better economy and environmental-protection property can be achieved.

Description

technical field [0001] The invention relates to an enzymatic preparation method of epoxy fatty acid glyceride. Background technique [0002] Substances added to polymer materials that can enhance the plasticity of polymers can be called plasticizers, also known as plasticizers or plasticizers; they are indispensable processing aids in the processing of plastic products, which can increase the softness of materials Or liquefy the material. For a long time, plasticizers have been dominated by o-phthalic products such as DOP (dioctyl phthalate). DOP is a general-purpose plasticizer, mainly used for the processing of polyvinyl chloride resin, and can also be used for acetate resin, Processing of high polymers such as ABS resin and rubber. With the widespread use of plasticizers in the fields of food and medical packaging products, more and more attention has been paid to the research on their toxicity. The US Environmental Protection Agency has found that DOP can cause tissue...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/64
CPCC12P7/6445
Inventor 杨博周鹏飞王永华王卫飞蓝东明严慧玲王旭苹
Owner SOUTH CHINA UNIV OF TECH
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