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Method for extracting and comprehensively utilizing active matters of rice bran

A technology of rice bran and rice bran polysaccharides, which is applied in the field of deep rice processing, can solve the problems of expensive products and achieve the effects of reducing waste pollution and high economic benefits

Inactive Publication Date: 2011-05-04
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The original ceramide products are mainly made from wheat, and the products are expensive

Method used

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  • Method for extracting and comprehensively utilizing active matters of rice bran

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Embodiment 1

[0026] 1. Transformation and extraction of natural γ-aminobutyric acid: crush fresh rice bran and pass through a 36-mesh sieve, take 10kg of sieved rice bran, add 70kg of water, 30g of glutamic acid, and 0.3g of calcium chloride in sequence, according to 0.5mmol / Add pyridoxal phosphate to a concentration of L, and react at a temperature of 40°C and a pH of 5.6. After 7 hours, the supernatant and filter cake 1 were obtained by centrifugation. Add 42L of ethanol to the supernatant, precipitate for 8 hours, centrifuge to take the supernatant, and then perform ultrafiltration through a 50nm inorganic ceramic membrane under a pressure of 0.2MPa after microfiltration, and the filtrate is concentrated under reduced pressure in the second effect until the solid content reaches 30 % after spray drying, the temperature of the air outlet is 95°C, to obtain 37g of high-containing γ-aminobutyric acid powder, and the ethanol is recycled for reuse.

[0027] 2. Extraction of natural rice br...

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Abstract

The invention discloses a method for comprehensively extracting active matters from rice processing byproducts such as rice bran and grain embryo. The rice bran, the grain embryo and the like are taken as raw materials, and the method comprises the following steps of: converting by using an endogenous enzyme method and extracting to obtain gamma-aminobutyric acid; extracting the active matters according to physical and chemical characteristics of the active matters in a certain order; extracting natural rice bran ceramide from a filter cake subjected to gamma-aminobutyric acid extraction by using an amphiprotic solvent; stepwise precipitating by using ethanol to obtain rice bran polysaccharide; and extruding and bulking the filter cake to prepare rice bran dietary fibers. The rice processing byproduct resources such as the rice bran and the grain embryo are fully utilized, the wastes generated in the production process are reduced, and higher economic and social benefits are achieved.

Description

technical field [0001] The invention relates to a method for extracting and comprehensively utilizing active substances in by-products of rice processing such as rice bran and grain germ, specifically to a separation technology for comprehensively extracting active substances in rice bran and grain germ, and improving the added value of processing rice bran and grain germ, which belongs to the field of rice refining processing field. Background technique [0002] According to statistical data, China's annual total rice output is about 200 million tons, accounting for 42% of the country's total grain output, accounting for about 35% of the world's total rice output, but more than 10 million tons of rice bran has not been processed by food Industrial use. Rice bran is rich in nutrients such as high-quality protein, cellulose, mineral elements, B vitamins (VB1, VB2, VB6), a large amount of dietary cellulose, and polysaccharides, 28-carbon alkanol, 30-carbon alkanol, and cerami...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P13/00C07C233/18C07C231/24C08B37/00A23L1/10A23L1/28A23L1/308A23L33/21
Inventor 毛建卫崔艳丽吴元锋黄俊刘士旺杨志祥平丽娟葛青刘宝鉴
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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