Polysaccharides from Laminaria japonica: Structural characteristics and antioxidant activity
文献类型: 外文期刊
第一作者: Cui, Chun
作者: Cui, Chun;Lu, Jianghong;Sun-Waterhouse, Dongxiao;Sun, Weizheng;Zhao, Mouming;Zhao, Haifeng;Mu, Lixia;Mu, Lixia;Mu, Lixia
作者机构:
关键词: Polysaccharide;Laminaria japonica;Antioxidant activity;Glycosidic linkages;Sulfate group
期刊名称:LWT-FOOD SCIENCE AND TECHNOLOGY ( 影响因子:4.952; 五年影响因子:5.383 )
ISSN:
年卷期:
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收录情况: SCI
摘要: In the present study, polysaccharides from Laminaria japonica (LJPA-P) were investigated for their structural characteristics and antioxidant activity. Three acidic polysaccharides LJPA-P1, LJPA-P2 and LJPA-P3 were obtained from Laminaria japonica by sequential hot water and citric acid extraction, and fractionation by DEAE-Sepharose fast flow chromatography and serial NaCI solution elutions. Results showed that three acidic polysaccharides differed in their monosaccharide compositions, sulfation, glycosidic linkages, molecular weights and antioxidant activities. LJPA-P3 was unique in its high sulfate group and galactose contents, molar ratio of galactose, mannose and fucose (26.1: 1.3: 1) and dominance of 1,3- and 1-linked galactose, exhibiting remarkably high oxygen radical absorbance capacity (ORAC, 1247.22 mu mol Trolox/g) and ABTS radical scavenging activity (up to 70%), which was quite different from those of LJPA-P1 and LJPA-P2. Therefore, brown seaweed Laminaria japonica represents a good source of polysaccharides with significant antioxidant activity. 2016 Elsevier Ltd. All rights reserved.
分类号: TS2
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