Characterization and antioxidant activities of intracellular polysaccharides from Agaricus bitorquis (QueL.) Sacc. Chaidam ZJU-CDMA-12
文献类型： 外文期刊
作者： Kuang, Hui 1 ; Jiao, Yingchun 2 ; Wang, Wei 3 ; Wang, Fengju 1 ; Chen, Qihe 1 ;
作者机构： 1.Zhejiang Univ, Dept Food Sci & Nutr, Yuhangtang Rd 866, Hangzhou 310058, Peoples R China
2.Qinghai Univ, Agr & Anim Husb Coll, Xining 810016, Peoples R China
3.Zhejiang Acad Agr Sci, Inst Qual & Stand Agr Prod, Hangzhou 10021, Peoples R China
关键词： Antioxidant activities; Polysaccharides; Agaricus bitorquis (QueL.) Sacc. Chaidam
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）
ISSN： 0141-8130
年卷期： 2020 年 156 卷
页码：
收录情况： SCI
摘要： The antioxidant activities of polysaccharides from the fruiting body (PFB), extracellular polysaccharides (EPS) and intracellular polysaccharides (IPS) from Agaricus bitorquis (QueL.)Sacc. Chaidam 2JU-CDMA-12 in vitro were compared. IPS showed stronger antioxidant activities than PFB and EPS in vitro. Further purification and structure analyses indicated that IPS mainly consisted of three fractions (IPS-I, IPS-II and IPS-III). FT-IR and NMR data indicated that IPS was mainly composed of (1 -> 6)-linked alpha-D-glucose. There are significant differences of antioxidant activities among IPS-I, IPS-II and IPS-III fractions in vitro, and IPS-III showed stronger antioxidant activity than IPS-I and IPS-II. IPS-III also possesses a potent antioxidant ability inside HepG2 cells, and it could protect HepG2 cells from H2O2-induced cytotoxicity by scavenging overproduced cellular ROS and inhibiting SOD, CAT and GSH depletion to weaken lipid peroxidation. These findings suggested that IPS-HI could be a novel antioxidant and that it could afford protection against H2O2-induced cytotoxicity and oxidative stress. (C) 2019 Elsevier B.V. All rights reserved.
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