Method for extracting rice bran polysaccharides by using continuous countercurrent ultrasonic equipment

A rice bran polysaccharide and ultrasonic technology, applied in the modern biological field, can solve the problems of long production cycle, failure of comprehensive utilization of bran residue, affecting the subsequent refining of products, etc., so as to achieve the effects of ensuring product quality and expanding comprehensive utilization methods.

Inactive Publication Date: 2012-12-05
HEGANG SANJIANG PLAIN RICE IND GRP CO LTD
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Problems solved by technology

The disadvantages are that the selected enzyme preparation has low activity and poor effect, which not only affects the product quality, but also affects the subsequent refining of the

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  • Method for extracting rice bran polysaccharides by using continuous countercurrent ultrasonic equipment

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Embodiment Construction

[0009] (1) After passivating and removing impurities from the fresh rice bran, the passivated fresh rice bran 1 is obtained and set aside;

[0010] (2) Extraction: Put the passivated fresh rice bran 1 into the continuous countercurrent ultrasonic extraction equipment 2, add deionized water according to the mass ratio of 1:10-15, stir, adjust the pH of the medium to 5.0 with 10% hydrochloric acid, heat to 85°C, Continuous extraction at this temperature;

[0011] (3) Pressure filtration: the extracted mixture is sent to the drum filter 3, washed with a small amount of deionized water, and the bran residue is collected for the production of rice bran nutrients and rice bran dietary fiber. Combine the washing liquid and the filtrate and store them together;

[0012] (4) Enzymolysis: pump the filtrate into the enamel liquefaction tank 4, add high-temperature-resistant α-amylase (the addition amount is estimated at 3,000U / kg), stir, heat up to 90°C, keep the pH value at 5.8-6.2, an...

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Abstract

The invention provides a method for extracting rice bran polysaccharides by using continuous countercurrent ultrasonic equipment. An appropriate adding amount of an enzyme preparation, an appropriate PH value and an optimal control temperature during countercurrent continuous extraction are determined by selecting efficient high-temperature-resistant alpha-amylase and high-temperature-resistant glucoamylase. Due to the adoption of the method, the reaction time is shortened, the product yield is increased, and an obtained product has good quality; and bran residues left after extraction of the rice bran polysaccharides is used for producing a rice bran nutrient and rice bran dietary fiber, so that rice bran is fully utilized, waste residues are not discharged in a production process, bran residues in the production process can be utilized, and the comprehensive utilization way of rice bran is expanded.

Description

Technical field [0001] The invention belongs to the category of modern biotechnology. technical background [0002] In my country, fresh rice bran is used to extract rice bran polysaccharides, generally using hot water leaching, enzymatic hydrolysis, and ethanol precipitation methods, and this method adopts a batch process. The disadvantages are that the selected enzyme preparation has low activity and poor effect, which not only affects the product quality, but also affects the subsequent refining of the product, the yield is not high, the production cycle is long, and the bran residue extracted from rice bran polysaccharide cannot be comprehensively utilized, and the product is single . Contents of the invention [0003] In order to overcome the above-mentioned deficiencies and problems, the object of the present invention is to provide a method for extracting rice bran polysaccharides using continuous countercurrent ultrasonic equipment, select high-efficiency high-tem...

Claims

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Application Information

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IPC IPC(8): C08B37/00C12S3/02
Inventor 陈希权
Owner HEGANG SANJIANG PLAIN RICE IND GRP CO LTD
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