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2011•Hunan Agricultural SciencesRequires access

Study on Extraction Method and Purification Method for Rice Starch

Huaxi Xiao

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Abstract

This research intended to extract high purity starch(protein0.4%) from early indica rice by using composite method of alkali and enzyme.This research found out that the optimum technology conditions for extracting rice starch by using ultrasonic-assisted enzymatic method were as follows: time of ultrasonic treatment was 25 min;enzyme adding dosage was 5 mg/g;time of enzymolysis was 2 h;temperature of enzymolysis was 45℃;proportion of solid and liquid was 1:4.Under this optimum conditions,the extraction rate of rice starch reached 91.2%,and the purity of it was 98.7%.

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What this paper is about

This research intended to extract high purity starch(protein0.4%) from early indica rice by using composite method of alkali and enzyme.This research found out that the optimum technology conditions for extracting rice starch by using ultrasonic-assisted enzymatic method were as follows: time of ultrasonic treatment was 25 min;enzyme adding dosage was 5 mg/g;time of enzymolysis was 2 h;temperature of enzymolysis was 45℃;proportion of solid and liquid was 1:4.Under this optimum conditions,the extraction rate of rice starch reached 91.2%,and the purity of it was 98.7%.

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Available abstract

This research intended to extract high purity starch(protein0.4%) from early indica rice by using composite method of alkali and enzyme.This research found out that the optimum technology conditions for extracting rice starch by using ultrasonic-assisted enzymatic method were as follows: time of ultrasonic treatment was 25 min;enzyme adding dosage was 5 mg/g;time of enzymolysis was 2 h;temperature of enzymolysis was 45℃;proportion of solid and liquid was 1:4.Under this optimum conditions,the extraction rate of rice starch reached 91.2%,and the purity of it was 98.7%.

Key concepts: Starch, Extraction (chemistry), Chromatography, Chemistry, Enzyme, Food science, Materials science, Biochemistry

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