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Antioxidant activity of different molecular weight sulfated polysaccharides from Ulva pertusa Kjellm (Chlorophyta)

文献类型：期刊论文

作者Qi, HM; Zhao, TT; Zhang, QB; Li, Z; Zhao, ZQ; Xing, R
刊名JOURNAL OF APPLIED PHYCOLOGY
出版日期2005-12-01
卷号17期号:6页码:527-534
关键词Antioxidant Activity Metal Chelating Ability Molecular Weight Free Radical Scavenging Effect Reducing Power Ulvan
ISSN号0921-8971
DOI10.1007/s10811-005-9003-9
文献子类Article
英文摘要Polysaccharides extracted from Ulva pertusa Kjellm ( Chlorophyta) are a group of sulfated heteropolysaccharides, the ulvans. In this study, different molecular weight ulvans were prepared by H2O2 degradation and their antioxidant activities investigated including superoxide and hydroxyl radical scavenging activity, reducing power and metal chelating ability. The molecular weights of natural and degraded ulvans were 151.7, 64.5, 58.0, and 28.2 kDa, respectively, as determined by high performance gel permeation chromatography. Among the four samples, U-3 ( the lowest molecular weight sample) showed significant inhibitory effects on superoxide and hydroxyl radicals with IC50 values of 22.1 mu g mL(-1) and 2.8 mg mL(-1); its reducing power and metal chelating ability were also the strongest among the four samples. All the other samples also demonstrated strong activity against superoxide radicals. The results indicated that molecular weight had a significant effect on the antioxidant activity of ulvan with low molecular weight ulvan having stronger antioxidant activity.; Polysaccharides extracted from Ulva pertusa Kjellm ( Chlorophyta) are a group of sulfated heteropolysaccharides, the ulvans. In this study, different molecular weight ulvans were prepared by H2O2 degradation and their antioxidant activities investigated including superoxide and hydroxyl radical scavenging activity, reducing power and metal chelating ability. The molecular weights of natural and degraded ulvans were 151.7, 64.5, 58.0, and 28.2 kDa, respectively, as determined by high performance gel permeation chromatography. Among the four samples, U-3 ( the lowest molecular weight sample) showed significant inhibitory effects on superoxide and hydroxyl radicals with IC50 values of 22.1 mu g mL(-1) and 2.8 mg mL(-1); its reducing power and metal chelating ability were also the strongest among the four samples. All the other samples also demonstrated strong activity against superoxide radicals. The results indicated that molecular weight had a significant effect on the antioxidant activity of ulvan with low molecular weight ulvan having stronger antioxidant activity.
学科主题Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
URL标识查看原文
语种英语
WOS记录号WOS:000235115300007
公开日期2010-12-22
源URL[http://ir.qdio.ac.cn/handle/337002/3531]  
专题海洋研究所_海洋生物技术研发中心
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式
GB/T 7714		 Qi, HM,Zhao, TT,Zhang, QB,et al. Antioxidant activity of different molecular weight sulfated polysaccharides from Ulva pertusa Kjellm (Chlorophyta)[J]. JOURNAL OF APPLIED PHYCOLOGY,2005,17(6):527-534.
APA Qi, HM,Zhao, TT,Zhang, QB,Li, Z,Zhao, ZQ,&Xing, R.(2005).Antioxidant activity of different molecular weight sulfated polysaccharides from Ulva pertusa Kjellm (Chlorophyta).JOURNAL OF APPLIED PHYCOLOGY,17(6),527-534.
MLA Qi, HM,et al."Antioxidant activity of different molecular weight sulfated polysaccharides from Ulva pertusa Kjellm (Chlorophyta)".JOURNAL OF APPLIED PHYCOLOGY 17.6(2005):527-534.

入库方式： OAI收割

来源：海洋研究所

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