Optimizing Ultrasonic-assisted Extraction Process for Water-soluble Polysaccharides from Sophora japonica Flower by Response Surface Methodology

doi:10.7506/spkx1002-6630-201104023

Abstract

Abstract: Purpose: To optimize the ultrasonic-assisted extraction process for water-soluble polysaccharides from Sophora japonica flower for improved extraction efficiency. Methods: The optimization strategy used was a series of one-factor-at-a-time investigations and subsequent response surface analysis based on a quadratic regression rotary combination design. Results: Within tested level ranges, the importance of four process parameters affecting extraction yield of polysaccharides from big to small was ultrasonic treatment time, liquid-to-solid ratio and ultrasonic power in turn. Ultrasonic treatment time of 58 min, ultrasonic power of 217 W and extraction temperature of 30 ℃ were found optimum for polysaccharide extraction. Conclusion: ultrasonic assistance is beneficial to shorten extraction time and improve extraction efficiency and consequently, suitable for the extraction of water-soluble polysaccharides from Sophora japonica flower.

Key words: Sophora japonica, polysaccharides, ultrasonic, extraction

CLC Number:

TS224，TS201.1

XU Jian-guo，TIAN Cheng-rui，HU Qing-ping，DONG Jun-rong. Optimizing Ultrasonic-assisted Extraction Process for Water-soluble Polysaccharides from Sophora japonica Flower by Response Surface Methodology[J]. FOOD SCIENCE, 2011, 32(4): 112-116.

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Optimizing Ultrasonic-assisted Extraction Process for Water-soluble Polysaccharides from Sophora japonica Flower by Response Surface Methodology

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