Method of extracting steryl ester from high-temperature deodorized substance of edible oil through combination of enzyme hydrolysis and molecular distillation

A technology of molecular distillation and sterol ester, which is applied in the field of extraction and separation of natural products, can solve the problems of low purity, difficult industrialization of sterol ester, and low yield, and achieve the effects of simple process route, guaranteed edible quality, and low cost

Inactive Publication Date: 2015-12-09
SINOGRAIN ZHENJIANG GRAIN & OIL QUALITY TESTINGCENT CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of difficult industrialization, low yield and low purity of sterol esters in the prior art, and provide a method for extracting sterol esters in high-temperature deodorized edible oils. The high-temperature deodorized distillate obtained by the sub-fatty acid capture process is used as the raw material, and the high-boiling point substances are separated by molecular distillation, and the high-boiling point substances are further separated by enzymatic hydrolysis to obtain a sterol ester mixture, and finally the sterol ester is separated from the Purified from the mixture to obtain natural sterol ester products with a purity of more than 60%

Method used

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  • Method of extracting steryl ester from high-temperature deodorized substance of edible oil through combination of enzyme hydrolysis and molecular distillation
  • Method of extracting steryl ester from high-temperature deodorized substance of edible oil through combination of enzyme hydrolysis and molecular distillation

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Embodiment 1

[0024] 1) Primary molecular distillation process: using the high-temperature deodorized distillate obtained by the high-low temperature twice fatty acid capture process in the soybean oil refining process as raw material, the low-boiling point substances and high-boiling point substances are separated by molecular distillation, and the distillation in the molecular distillation is controlled. The temperature is 190°C, the vacuum degree is 0.1Pa, the speed of the scraping film is 300r / min, and the flow rate is 2g / min; the low boiling point components are natural vitamin E, free fatty acids, sterols and monoglycerides, and the high boiling point components are triglycerides , diglycerides and sterol esters;

[0025] 2) Enzymolysis process: collect the high boiling point components obtained in step 1), then add water and Novozymes 435 enzyme, by weight fraction, wherein high boiling point components: water: enzyme = 50:150:0.5, in Stir the enzymolysis at 40°C and 200r / min for 8 h...

Embodiment 2

[0028] 1) Primary molecular distillation process: using the high-temperature deodorized distillate obtained by the high-low temperature twice fatty acid capture process in the soybean oil refining process as raw material, separate low-boiling point substances and high-boiling point substances through molecular distillation, and the distillation temperature in molecular distillation The temperature is 230°C, the degree of vacuum is 20Pa, the rotating speed of the scraping film is 600r / min, and the flow rate is 5g / min; the low boiling point components are natural vitamin E, free fatty acids, sterols and monoglycerides, and the high boiling point components are triglycerides, glycerol Diesters and sterol esters;

[0029] 2) Enzymolysis process: collect the high boiling point components obtained in step 1), then add water and Novozymes 435 enzyme, by weight fraction, wherein high boiling point components: water: enzyme = 150:50:5, in Stir the enzymolysis at 80°C and 400r / min for 2...

Embodiment 3

[0032] 1) Primary molecular distillation process: using the high-temperature deodorized distillate obtained by the high-low temperature twice fatty acid capture process in the soybean oil refining process as raw material, separate low-boiling point substances and high-boiling point substances through molecular distillation, and the distillation temperature in molecular distillation The temperature is 210°C, the vacuum degree is 1Pa, the speed of scraping film is 450r / min, and the flow rate is 3.7g / min; the low boiling point components are natural vitamin E, free fatty acids, sterols and monoglycerides, and the high boiling point components are triglycerides, diglycerides and sterol esters;

[0033] 2) Enzymolysis process: collect the high boiling point components obtained in step 1), then add water and Novozymes 435 enzyme, by weight fraction, wherein high boiling point components: water: enzyme = 50:50:1, in Stir the enzymolysis at 60°C and 300r / min for 16 hours; after the en...

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Abstract

The invention discloses a method of extracting steryl ester from a high-temperature deodorized substance of edible oil through combination of enzyme hydrolysis and molecular distillation. In the method, with a high-temperature deodorized distillate from a soybean oil refining process as a raw material, high-boiling-point substances are separated through the molecular distillation and then are further separated through enzyme-catalyzed hydrolysis to obtain a steryl ester mixture, and finally, the steryl ester is purified out from the mixture through the molecular distillation, thereby obtaining a natural steryl ester product being 60-70% in purity.

Description

technical field [0001] The invention belongs to the technical field of extraction and separation of natural products, and specifically relates to a method for extracting sterol esters in high-temperature edible oil deodorization distillates obtained by a high-temperature and low-temperature twice fatty acid capture process by combining enzymatic hydrolysis and molecular distillation. Background technique [0002] Phytosterol esters have the same or even better physiological activity than phytosterols, and have lower melting points and better oil solubility, which can solve the limitation of phytosterols in food applications. Deodorized distillate is a by-product of the vegetable oil refining process, which contains free fatty acids, natural vitamin E, sterols, sterol esters and glycerides, etc. At present, the deodorized distillate has become an important raw material for extracting natural VE and phytosterol esters. [0003] Phytosterols have a variety of important physiol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07J9/00
Inventor 杨厚盘张榴萍单树森罗世龙方铄虹王中黄婕吴益金浩
Owner SINOGRAIN ZHENJIANG GRAIN & OIL QUALITY TESTINGCENT CO LTD
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