Optimization of Ultrasonic Extraction of Polysaccharides from Salvia officinalis L. Leaves and Their DPPH Free Radical Scavenging Activity

doi:10.7506/spkx1002-6630-201116016

Abstract

Abstract: The conditions for ultrasonic extraction of polysaccharides from Salvia officinalis L. leaves were optimized by one-factor-at-a-time and orthogonal array design methods. A material-to-liquid ratio of 1:40 for 7 min extractions performed twice proved optimal. The resultant polysaccharide yield was 3.27%. The polysaccharide extract obtained had excellent DPPH free radical scavenging effect, revealing a scavenging rate of 82% at the concentration of 160μg/mL and an IC50 of 112μg/mL.

Key words: Salvia officinalis, polysaccharide, ultrasonic extraction, 1,1-diphenyl-2-picrylhydrazyl (DPPH)

CLC Number:

TQ929.2

ZHU Yuan-ting，WU Wen-lin，ZHANG Li，LIU Qi. Optimization of Ultrasonic Extraction of Polysaccharides from Salvia officinalis L. Leaves and Their DPPH Free Radical Scavenging Activity[J]. FOOD SCIENCE, 2011, 32(16): 76-79.

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Optimization of Ultrasonic Extraction of Polysaccharides from Salvia officinalis L. Leaves and Their DPPH Free Radical Scavenging Activity

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