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Method for preparing high concentration gamma-aminobutyric acid powder using rice bran as material

A technology of aminobutyric acid powder and aminobutyric acid, which is applied in the direction of fermentation, can solve the problems of poor taste, inferior application prospect, inconvenient consumption of germinated brown rice, etc., and achieves rich nutrition, improved comprehensive utilization value and excellent physiological function Effect

Inactive Publication Date: 2007-07-11
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, it is very inconvenient to eat germinated brown rice, and the taste is relatively poor, so the application prospect is not as good as that of rice bran.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 15kg of rice bran, add 90kg of water, add 15g Glu, 55mg Cacl 2 , shaking at pH 5.6 and 40°C for 8 hours. Centrifuge to get supernatant, add ethanol to 70% volume ratio, settle for 12 hours, centrifuge to get supernatant. Ultrafiltration was carried out at a pressure of 0.2MPa using a 50nm inorganic ceramic membrane. The ultrafiltration permeate is concentrated by a falling film double-effect concentrator at 60°C, and the concentrated feed liquid is spray-dried, the outlet temperature is 85°C, and the dried product is High concentration GABA powder.

Embodiment 2

[0016] Weigh 15kg of rice bran, add 120kg of water, add 75g Glu, 65mgCacl 2 , shaking at pH 5.6 and 40°C for 6 hours. Centrifuge to get supernatant, add ethanol to 80% volume ratio, settle for 12 hours, centrifuge to get supernatant. Ultrafiltration was carried out at a pressure of 0.2MPa using a 50nm inorganic ceramic membrane. Concentrate the ultrafiltration permeate with a falling film double-effect concentrator under the condition of 65°C, and spray-dry the concentrated feed liquid at an outlet temperature of 85°C. The dried product is High concentration GABA powder.

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Abstract

The invention discloses a making method of high-density gamma-aminobutyric acid powder, which comprises the following steps: adopting rice bran as raw material; adding glutamic acid, calcium chloride and phosphopyridoxal to obtain the reacting liquid with rich gamma-aminobutyric acid through endogenous enzyme; centrifuging and separating to obtain supernatant; adding alcohol to remove impurity; hyperfiltering; condensing; drying to obtain the product with content over 50%.

Description

technical field [0001] The invention discloses a method for preparing high-concentration γ-aminobutyric acid powder from rice bran, which belongs to the technical field of rice deep processing. Background technique [0002] The cortex that is rolled off during the whitening process of brown rice is rice bran, which is composed of a mixture of pericarp, seed coat, nacelle, aleurone layer, rice germ and small rice crumbs. In the process of rice processing, brown rice is first obtained by removing the husk and husk of rice, and secondly, white rice is obtained by removing the brown cortex outside the brown rice. The main by-product rice bran includes aleurone layer, nacelle layer, pericarp layer and the interlayer Several sublayers, but the bran in actual production is also mixed with rice germ and broken rice. The composition of full-fat rice bran has 12%-18% protein, 16%-20% fat, about 12% ash and about 50% carbohydrates, among which carbohydrates include starch, phytate, he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P13/00
Inventor 张晖姚惠源王立郭晓娜
Owner JIANGNAN UNIV
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