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Comparison of Physicochemical Properties and Immunomodulatory Activity of Polysaccharides from Fresh and Dried Litchi Pulp

文献类型： 外文期刊

作者： Huang, Fei 1 ; Zhang, Ruifen 2 ; Yi, Yang 3 ; Tang, Xiaojun 2 ; Zhang, Mingwei 2 ; Su, Dongxiao 1 ; Deng, Yuanyuan 2 ; We 1 ;

作者机构： 1.Huazhong Agr Univ, Dept Food Sci & Technol, Wuhan 430070, Peoples R China

2.Guangdong Acad Agr Sci, Sericultural & Agri Food Res Inst, Guangzhou 510610, Guangdong, Peoples R China

3.Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan 430023, Peoples R China

关键词： litchi;drying;polysaccharides;anti-tumor activity;immunomodulatory activity

期刊名称：MOLECULES （ 2020影响因子：4.411； 五年影响因子：4.587 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Drying is commonly used for preservation and processing of litchi. However, its polysaccharide structure may be altered by the drying process, resulting in biological activity changes. Polysaccharides from fresh and dried litchi pulp (denoted as LPF and LPD, respectively) were isolated, investigated by GC-MS, GPC and UV/IR spectrum analysis and their antitumor and immunomodulatory activities were evaluated in vitro. LPD, the molecular weight of which was lower than that of LPF, contained more protein, uronic acid, arabinose, galactose and xylose. Compared with LPF, LPD exhibited a higher inhibitory effect on the proliferation of HepG2, Hela and A549 cells from 50–750 μg/mL. LPD was also a better stimulator of spleen lymphocyte proliferation, NK cells cytotoxicity and macrophage phagocytosis from 50–400 μg/mL. In summary, drying could change the physicochemical properties and enhance the bioactivity of polysaccharides from litchi pulp. This finding is supported by the fact that dried litchi pulps are used in Traditional Chinese Medicine.

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