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Method for extracting rice bran nutrients

An extraction method and nutrient technology, applied in the field of supercritical extraction of nutrients from rice bran, can solve problems such as low extraction efficiency of nutrients, and achieve the effects of easy control of operating parameters, short production cycle, and low production cost

Inactive Publication Date: 2012-07-11
ANHUI YANZHIFANG FOOD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Although there are many methods for extracting nutrients from rice bran in the prior art, most of these methods focus on the extraction of some nutrients in the nutrients, and the extraction efficiency of nutrients is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Stabilization of rice bran: Wash the fresh rice bran with water, then cook the rice bran at high temperature, the cooking temperature is controlled between 110-150°C, and the cooking time is 30 minutes;

[0024] (2) Rice bran hydrolysis: take the stabilized rice bran, add 4 times its mass of water, add 600,000 units of amylase, 200,000 units of protease, and 1.5 million units of cellulase per 100kg of rice bran, and mix them at 60°C Keep warm for 1 hour, the hydrolyzed rice bran is crushed into a slurry, filtered to obtain a slurry, and dried to remove water;

[0025] (3) Primary extraction: adding dry rice bran hydrolyzate to CO 2 In the supercritical extraction tank, then pass the carrier ethanol into the extractor for extraction, and extract continuously for 5 hours at the extraction temperature between 30-50°C and the extraction pressure of 0.5-0.8Mpa, and concentrate the extracted product under reduced pressure to recover the solvent;

[0026] (4) ...

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Abstract

The invention discloses a method for extracting rich bran nutrients through two stages of CO2 supercritical extraction. With the extraction method provided by the invention, the extraction rate of rich bran nutrients can be increased, and a part of coarse fiber can be converted into soluble dietary fiber. The nutrition constituents in rice bran are furthest utilized, poor taste caused by the coarse fiber can also be avoided, and the method has high industrial value.

Description

technical field [0001] The invention belongs to the field of food deep processing, and in particular relates to a supercritical extraction method of rice bran nutrients. Background technique [0002] my country is the main country that grows rice in the world, and the output of rice is very high. However, rice bran, which is a by-product in the rice processing process, has not been effectively utilized. It is only used as oil extraction, feed or waste treatment, and its economic benefits are also low. It also caused a lot of environmental pollution. [0003] Rice bran is a renewable resource that has excellent physiological functions and high nutritional value and can be fully absorbed and utilized by the human body. A large number of studies have proved that rice bran is the essence of rice grains. It contains high-quality fat, protein, tocopherol, tocotrienol, r-oryzanol and dietary fiber. It has significant functions in regulating the body's physiological functions and pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/10A23L1/29A23L7/10A23L33/00
Inventor 张丽琍祁斌吴雷张超
Owner ANHUI YANZHIFANG FOOD
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