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2019•E3S Web of ConferencesOpen access

Orthogonal Optimization of Polysaccharide Extraction from Millet Bran

Songling Cai, Min Pang

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Abstract

This paper investigated the effects of liquid-solid ratio, extraction time, extraction temperature and alkali concentration on the extraction rate of millet bran polysaccharides by the enzymatic hydrolysis and alkaline extraction method, then the L9 (34) orthogonal test was designed to optimize the extraction process according to the single factor experiment.The optimum parameters were obtained as follow: 15:1 liquid-solid ratio, five hours extraction time, 80° extraction temperature, and 0.7 mol/l concentration of sodium hydroxide. The extraction rate of millet bran polysaccharide reached 11.46% through the verification experiments under these conditions,and the RSD was 1.79%. Therefore, it can provide some experimental basis for the scientific research of millet bran polysaccharides in the future.

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This paper investigated the effects of liquid-solid ratio, extraction time, extraction temperature and alkali concentration on the extraction rate of millet bran polysaccharides by the enzymatic hydrolysis and alkaline extraction method, then the L9 (34) orthogonal test was designed to optimize the extraction process according to the single factor experiment.The optimum parameters were obtained as follow: 15:1 liquid-solid ratio, five hours extraction time, 80° extraction temperature, and 0.7 mol/l concentration of sodium hydroxide. The extraction rate of millet bran polysaccharide reached 11.46% through the verification experiments under these conditions,and the RSD was 1.79%. Therefore, it can provide some experimental basis for the scientific research of millet bran polysaccharides in the future.

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Available abstract

This paper investigated the effects of liquid-solid ratio, extraction time, extraction temperature and alkali concentration on the extraction rate of millet bran polysaccharides by the enzymatic hydrolysis and alkaline extraction method, then the L9 (34) orthogonal test was designed to optimize the extraction process according to the single factor experiment.The optimum parameters were obtained as follow: 15:1 liquid-solid ratio, five hours extraction time, 80° extraction temperature, and 0.7 mol/l concentration of sodium hydroxide. The extraction rate of millet bran polysaccharide reached 11.46% through the verification experiments under these conditions,and the RSD was 1.79%. Therefore, it can provide some experimental basis for the scientific research of millet bran polysaccharides in the future.

Key concepts: Extraction (chemistry), Bran, Polysaccharide, Sodium hydroxide, Chromatography, Chemistry, Alkaline hydrolysis, Hydrolysis

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