Physicochemical Characteristics and Immunomodulatory Activities of Three Polysaccharide-Protein Complexes of Longan Pulp
文献类型: 外文期刊
作者: Yi, Yang 1 ; Liao, Sen Tai 1 ; Zhang, Ming Wei 1 ; Shi, John 3 ; Zhang, Rui Fen 1 ; Deng, Yuan Yuan 1 ; Wei, Zhen Chen 1 ;
作者机构: 1.Guangdong Acad Agr Sci, Minist Agr, Biotech Res Inst, Guangzhou 510610, Guangdong, Peoples R China
2.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Peoples R China
3.Agr & Agri Food Canada, Guleph Food Res Ctr, Guelph, ON N1G 5C9, Canada
关键词: longan;pulp;polysaccharide-protein complex;physicochemical characteristic;immunomodulatory activity
期刊名称:MOLECULES ( 影响因子:4.411; 五年影响因子:4.587 )
ISSN: 1420-3049
年卷期: 2011 年 16 卷 7 期
页码:
收录情况: SCI
摘要: Three polysaccharide-protein complexes of longan pulp (LP1-3) were isolated in this work. Their physicochemical characteristics and immunomodulatory effects on splenocytes, natural killer (NK) cells and macrophages in vitro were investigated. The carbohydrate portions of LP1-3 were principally composed of glucose, arabinose and mannose. LP3 displayed the maximal moisture absorption, and the thermal stability of LP2 was obviously higher than that of LP1 and LP3. All of them showed the characteristic polysaccharide and protein bands in the Fourier Transform Infrared (FTIR) spectrum. For a certain dose, all the fractions could significantly stimulate splenocyte proliferation, macrophage phagocytosis against neutral red, and NK cell cytotoxicity against YAC-1 lymphoma cell (P < 0.05). The results demonstrated that the polysaccharide-protein complexes of longan pulp have medical potential as immunotherapeutic adjuvants due to their immunomodulatory activities.
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