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Method for converting fatty acid into fatty acid ethyl ester

A technology of fatty acid ethyl ester and fatty acid, applied in the field of oil technology processing, can solve problems such as low cost and low oil yield, and achieve the effects of low cost, low price, increased flavor and health care function

Pending Publication Date: 2020-07-14
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem of low oil yield in the existing methods for reducing fatty acids in rice bran, and provides a method for converting fatty acids into fatty acid ethyl esters. The method is simple in operation, high in yield and low in cost

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0018] Add rice bran (100.00 g) and edible alcohol (300.00 g, 6.5 mol) into the reaction flask, under nitrogen protection, heat up to 60°C for extraction for 3 hours, and filter. Put the filter cake into a reaction bottle, add edible alcohol (300.00 g, 6.5 mol), protect with nitrogen, heat up to 60°C for extraction for 3 h, filter, combine the two filtrates, let stand, separate layers, the lower layer is neutral Grease, upper ethanol phase, separated. Kaolin (6.00 g) was added to the ethanol phase, under nitrogen protection, the temperature was raised to 60-65°C, and the reaction endpoint was tracked by TLC. When the acid value is less than 3 mg / g (determine the acid value according to the grade of the oil), stop stirring, filter, recover the solvent, and obtain acid-reduced and decolorized rice bran oil.

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PUM

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Abstract

The invention discloses a method for converting fatty acid into fatty acid ethyl ester, belongs to the technical field of grease processing, and aims to solve the problem of low grease yield of an existing method for reducing fatty acid in rice bran. After main fatty acid in the rice bran oil is converted into fatty acid ethyl ester, the fragrance is weak, and the flavor of the rice bran oil can be improved. Ethyl linoleate has the health-care effects of regulating blood cholesterol, preventing and treating atherosclerosis, resisting variability and the like.

Description

technical field [0001] The invention belongs to the technical field of oil processing, and in particular relates to a method for converting fatty acid into fatty acid ethyl ester. Background technique [0002] The crude rice bran oil extracted from rice bran contains a certain amount of fatty acids, which is caused by the lipase in rice bran decomposing rice bran oil into fatty acids after processing rice or millet. The longer the processed rice bran is stored, the more fatty acids it will have. Fatty acid content exceeds a certain range and will affect people's normal consumption. In order to reduce the production of fatty acids in rice bran, the fresh rice bran is generally puffed to inactivate lipase, which can greatly reduce the acid value in rice bran crude oil. The acid value of rice bran crude oil is usually 10-20 (mg / g), and it can only be sold in the market after deacidification treatment to make the acid value lower than 3 (mg / g). The conventional method of alka...

Claims

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Application Information

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IPC IPC(8): C11B1/10C11C3/00
CPCC11B1/10C11B1/108C11C3/003
Inventor 邢俊德周易赵建平祝方李兴麻啸涛
Owner TAIYUAN UNIV OF TECH
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