| 冬虫夏草胞外多糖的体外抗氧化活性 |
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| 引用本文： | 闫景坤,马海乐,吴建勇,崔海英. 冬虫夏草胞外多糖的体外抗氧化活性[J]. 食品与发酵工业, 2012, 38(6): 110-113 |
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| 作者姓名： | 闫景坤 马海乐 吴建勇 崔海英 |
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| 作者单位： | 1. 江苏大学食品与生物工程学院,江苏镇江,212013
2. 香港理工大学应用生物与化学科技学系,香港 |
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| 基金项目： | 江苏省农产品物理加工重点实验室开放基金项目，江苏大学高级人才基金资助项目，江苏高校优势学科建设工程资助项目 |
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| 摘 要： | 研究了人工培养冬虫夏草胞外多糖的体外抗氧化活性。通过体外抗氧化模型和分光光度法研究了5种胞外多糖级分在不同体系中对超氧阴离子和羟自由基的清除作用、Trolox等价抗氧化能力。结果表明:胞外多糖各级分均能较好的清除O2-.、.OH和ABTS+.自由基,且级分EPS-1A-F3的作用效果强于其他各级分,进一步揭示其在膳食和理疗上具有潜在的应用价值。
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| 关 键 词： | 冬虫夏草 胞外多糖 自由基 抗氧化活性 |
Study on the Anti-oxidative Acticity of Exopolysaccharides from Cordyceps sinensis in vitro |
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| Affiliation: | Yan Jing-kun1,Ma Hai-le1,Wu Jian-yong2,Cui Hai-yin1 1(School of Food and Biological Engeering,Jiangsu University,Zhenjiang 212013,China) 2(Department of Applied and Biology and Chemical Technology,Hong Kong Polytechnic University,Hong Kong,China) |
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| Abstract: | The anti-oxidative activity of exopolysacchrides(EPS) isolated from the cultured Cordyceps sinensis in vitro was studied.In vitro trials of antioxidant activities and spectrophotometry were chosen to evaluate the free-radical scavenging activity(O-2·,·OH) and Trolox equivalent antioxidant capacity(TEAC) of five EPS fractions in different systems.The results revealed that these EPS fractions could moderately scavenge O-2·,·OH,ABTS+· radicals.Among them,EPS-1A-F3 had stronger effects on free radicals than others.It has a great potential to be an effective antioxiant for dietary and therapeutic applications. |
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| Keywords: | Cordyceps sinensis exopolysacchrides free radicals antioxidant actiity |
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