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Antioxidant and immunoregulatory activity of alkali-extractable polysaccharides from mung bean

文献类型： 外文期刊

作者： Yao, Yang 1 ; Zhu, Yingying 1 ; Ren, Guixing 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, 80 South Xueyuan Rd, Beijing 100081, Peoples R China

2.Univ Liege, Anim Sci Unit, Gembloux Agrobio Tech, Passage Deportes 2, B-5030 Gembloux, Belgium

关键词： Mung bean;Alkali-extractable polysaccharide;Antioxidant

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）

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收录情况： SCI

摘要： Alkali-extractable polysaccharides from the seeds of mung beans and two polysaccharide sub-fractions (MAP-1 and MAP-2) were isolated and purified by anion-exchange and gel filtration chromatography. The average molecular weights (Mws) of MAP-1 and MAP-2 were 94.2 kDa and 60.4 kDa, respectively. Monosaccharide component analysis indicated that MAP-1 was composed of Rha, Ara, Glu, Gal, and GalA in a molar ratio of 1.1:0.4:0.7:0.5:0.3. MAP-2 consisted of Xyl, Rha, Gal, Glu and GalA with a relative molar ratio of 0.4:1.4:1.6:0.5:0.2. Antioxidant assays indicated that both MAP-I and MAP-2 exhibit significant antioxidant activity in a dose-dependent manner. An in vitro study further showed that MAP-1 and MAP-2 were both able to stimulate the production of secretory molecules (NO, TNF-alpha and IL-6) by RAW 264.7 murine macrophages in a concentration-dependent manner. These findings suggest that the polysaccharides isolated in our study have immunoregulatory effects on macrophages and can be used as a beneficial health food. (C) 2015 Published by Elsevier B.V.

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