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| Extraction of Polysaccharides from Razor Clam Sinonovacula constricta and Their Antioxidant Activity |
| ZHAO Yan-jing,HU Hong,WANG Ying |
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Abstract The crude product of polysaccharides was isolated from fresh razor clam Sinonovacula constricta chopper added water by ultrasonic extraction and further purified by DEAE ion-exchange chromatography and Sephadex G-75 chromatography. The antioxidant activity of the polysaccharide substances was determined by fenton system and Pyrogallol oxidation. The results showed that the polysaccharide rate of ultrasonic extraction was 19.93%. The razor clam polysaccharides had effect on scavenging hydroxyl free radicals,and the scavenging hydroxyl free radical ability was increased up to 94.76% and scavenging superoxide anion radical ability was up to 83.08%.
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Received: 25 February 2010
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