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Effects of extraction methods on the antioxidant activities of polysaccharides obtained from Flammulina velutipes

文献类型： 外文期刊

作者： Zhang, Zuofa 1 ; Lv, Guoying 1 ; He, Weiqiang 2 ; Shi, Liangen 3 ; Pan, Huijuan 1 ; Fan, Leifa 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Hort, Hangzhou 310021, Zhejiang, Peoples R China

2.Jiaxing Vocat & Tech Coll, Inst Biol & Environm, Jiaxing 314036, Peoples R China

3.Zhejiang Univ, Coll Anim Sci, Hangzhou 310029, Zhejiang, Peoples R China

关键词： Flammulina velutipes;Antioxidant activity;Polysaccharide;Extraction method

期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：9.381； 五年影响因子：8.678 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Four polysaccharides (CFP, UFP, MFP and EFP) were extracted from Flammulina velutipes using hot water, ultrasonic, microwave or enzymatic methods optimized by orthogonal test. Preliminary structural characterizations were conducted using physicochemical properties. Polysaccharides extracted by all four methods showed similar physicochemical characteristics and FT-IR spectra. However, SEM images of tissues of F. velutipes were significantly different. EFP demonstrated better antioxidant activities against hydroxyl radical as well as improved metal chelating activity. UFP showed higher DPPH scavenging activity, but CFP exhibited higher antioxidant activity in reducing power. Hence, these polysaccharides can be used as natural antioxidants in functional foods or medicine. Further experiments on the biological activities of these four polysaccharides are currently in progress.

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