[Chemical properties and scavenging effects on active oxygen radicals of tea polysaccharides].
The chemical composition and scavenging effects of a kind of glycoprotein from tea on active oxygen free radicals were studied. The tea polysaccharides(TPS) were composed of arabinose, ribose, xylose, glucose and galactose. TPS(8.5-170 mg/L) could scavenge the .OH produced in deoxyribose-Fe2+ reaction and the scavenging rate was between 5.5% to 74.7%.
Food Science Department of Huazhong, Agricultural University, Wuhan 430070, China.
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H
Chen
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B
Xie
D016166:Free Radical Scavengers / Q000494:pharmacology*; D011134:Polysaccharides / Q000737:chemistry* / Q000494:pharmacology*; D017382:Reactive Oxygen Species; D013662:Tea / Q000737:chemistry*
D016166:Free Radical Scavengers; D011134:Polysaccharides; D017382:Reactive Oxygen Species; D013662:Tea