| Degradation of sulfated polysaccharides from Enteromorpha prolifera and their antioxidant activities | |
Li, Bing1,2; Liu, Song1; Xing, Ronge1 ; Li, Kecheng1,2; Li, Rongfeng1,2; Qin, Yukun1,2; Wang, Xueqin1,2; Wei, Zhenhua1,2; Li, Pengcheng1; Xing, RG
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| 2013-02-15 | |
| 发表期刊 | CARBOHYDRATE POLYMERS
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| ISSN | 0144-8617 |
| 卷号 | 92期号:2页码:1991-1996 |
| 文章类型 | Article |
| 摘要 | The effects of degradation on molecular weights (Mws) of polysaccharides from Enteromorpha prolifera were investigated. Microwave-assistance could highly accelerate reaction rate. Six representative sulfated polysaccharides (Mw 446.5, 247.0, 76.1, 19.0, 5.0 and 3.1 KDa) were prepared by a microwave-assistance acid hydrolysis method. Chemical analysis and FT-IR spectrum showed only glycosidic linkages were cleft without breaking significant structural units. Antioxidant activities of representative polysaccharides revealed that all samples showed great inhibitory effects on superoxide radical at a low concentration compared to Vitamin C and samples with high Mws exhibited higher inhibitory effects. On the contrary, samples with low Mws possessed stronger inhibitory effects on hydroxyl radical, IC50 of Mw 3.1 KDa was 0.39 mg/mL. The chelating effect of Mw 3.1 KDa was 77.3% at 5 mg/mL, which was twice more than initial polysaccharide. The study indicated Mw was the most significant factor to influence antioxidant activities of polysaccharides from E. prolifera. (C) 2012 Elsevier Ltd. All rights reserved.; The effects of degradation on molecular weights (Mws) of polysaccharides from Enteromorpha prolifera were investigated. Microwave-assistance could highly accelerate reaction rate. Six representative sulfated polysaccharides (Mw 446.5, 247.0, 76.1, 19.0, 5.0 and 3.1 KDa) were prepared by a microwave-assistance acid hydrolysis method. Chemical analysis and FT-IR spectrum showed only glycosidic linkages were cleft without breaking significant structural units. Antioxidant activities of representative polysaccharides revealed that all samples showed great inhibitory effects on superoxide radical at a low concentration compared to Vitamin C and samples with high Mws exhibited higher inhibitory effects. On the contrary, samples with low Mws possessed stronger inhibitory effects on hydroxyl radical, IC50 of Mw 3.1 KDa was 0.39 mg/mL. The chelating effect of Mw 3.1 KDa was 77.3% at 5 mg/mL, which was twice more than initial polysaccharide. The study indicated Mw was the most significant factor to influence antioxidant activities of polysaccharides from E. prolifera. (C) 2012 Elsevier Ltd. All rights reserved. |
| 关键词 | Enteromorpha Prolifera Sulfated Polysaccharide Microwave-assistance Molecular Weight Antioxidant Activity |
| 学科领域 | Chemistry ; Polymer Science |
| DOI | 10.1016/j.carbpol.2012.11.088 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Chemistry ; Polymer Science |
| WOS类目 | Chemistry, Applied ; Chemistry, Organic ; Polymer Science |
| WOS记录号 | WOS:000315616900135 |
| WOS关键词 | DIFFERENT MOLECULAR-WEIGHT ; RADICAL SCAVENGING ACTIVITY ; IN-VITRO ; EXTRACTS ; CHITOSAN ; CHLOROPHYTA ; RELEVANCE ; FUCOIDAN |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/16693 |
| 专题 | 海洋生物技术研发中心 |
| 通讯作者 | Xing, RG |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Li, Bing,Liu, Song,Xing, Ronge,et al. Degradation of sulfated polysaccharides from Enteromorpha prolifera and their antioxidant activities[J]. CARBOHYDRATE POLYMERS,2013,92(2):1991-1996. |
| APA | Li, Bing.,Liu, Song.,Xing, Ronge.,Li, Kecheng.,Li, Rongfeng.,...&Xing, RG.(2013).Degradation of sulfated polysaccharides from Enteromorpha prolifera and their antioxidant activities.CARBOHYDRATE POLYMERS,92(2),1991-1996. |
| MLA | Li, Bing,et al."Degradation of sulfated polysaccharides from Enteromorpha prolifera and their antioxidant activities".CARBOHYDRATE POLYMERS 92.2(2013):1991-1996. |
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