期刊
CARBOHYDRATE POLYMERS
卷 136, 期 -, 页码 988-994出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.10.017
关键词
Polysaccharide; Cyclocarya paliurus; Carboxymethylation; Characterization; Antioxidant activity
资金
- National Natural Science Foundation of China [31201297, 31471702, 31130041]
- National Key Technology RAMP
- D Program of China [2012BAD33B06]
- Natural Science Foundation of Jiangxi Province, China [20152ACB21004]
In this study, three chemically carboxymethyl polysaccharides (CM-CPs) were derived from Cyclocarya paliurus polysaccharides. The physicochemical properties and antioxidant activity in vitro of carboxymethyl derivatives were determined. The results of degree of substitution and FT-IR analysis showed the carboxymethylation of polysaccharides were successful. Compared with unmodified polysaccharides, the contents of carbohydrate and protein were decreased while CM-CP3 with highest DS value had more uronic acid. The carboxymethyl derivatives was mainly composed of Ara, Gal, Glc, Man, GalA, with a molecular weight (Mw) of 1.03-1.08 x 10(6) Da. Compared with the native polysaccharide, the CMCP3 with highest DS and Mw exhibited the highest antioxidant activity in beta-carotene-linoleic acid assay. However, the superoxide radical and hydroxyl radical scavenging activity were decreased by CM-CPs. These results demonstrated appropriate carboxymethylation modification could enhance the potential of C. paliurus polysaccharide as oxidation inhibitor. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据