不同分子量段蛹虫草多糖的超滤分离及其对巨噬细胞释放NO的影响
Separation by Ultrafiltration of Different Molecular Weight Fractions of Cordyceps militaris and Their Effect on Nitric Oxide Release from Macrophages
【作者】 朱丽娜; 周帅; 刘艳芳; 杨焱; 王世平; 王兆龙; 唐庆九;
【Author】 ZHU Lina1,2,ZHOU Shuai1,LIU Yanfang1,YANG Yan1, WANG Shiping2,WANG Zhaolong2,TANG Qingjiu1 1National Engineering Research Center of Edible Fungi;Shanghai Key Laboratory of Agricultural Genetics and Breeding;Institute of Edible Fungi,Shanghai Academy of Agricultural Sciences,Shanghai 201403,China; 2 School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China
【机构】 农业部南方食用菌资源利用重点实验室国家食用菌工程技术研究中心上海市农业遗传育种重点开放实验室上海市农业科学院食用菌研究所; 上海交通大学农业与生物学院;
【摘要】 用超滤法将蛹虫草(Cordyceps militaris)子实体水提物分为<10kDa(PW1)、10~100kDa(PW2)、100~300kDa(PW3)、300~750kDa(PW4)和>750kDa(PW5)5个部分,并测定了这5部分的总糖含量、单糖组成及其对巨噬细胞释放NO产量的影响。结果表明,蛹虫草粗提物总得率(PW1~PW5之和)为38.35%,其中PW1得率最高(36.482%),其次是PW2(1.822%),PW3~PW5的得率都很低;各部分的总糖含量都较高(45.70%~60.48%)。单糖组成分析表明,各部分的多糖分别由3~6种单糖组成,其中甘露糖、葡萄糖、半乳糖为主要单糖。PW2~PW5均具有刺激巨噬细胞释放NO的活性,且随着浓度的增加活性增强。
【Abstract】 Hot water(100 ℃) extracts of Cordyceps militaris fruit bodies were separated by membrane ultrafiltration into five different molecular weight fractions as follows: PW1<10 kDa,PW2 10~100 kDa,PW3 100~ 300 kDa,PW4 300~750 kDa,PW5>750 kDa.The total yield of extract was 38.35%(based on the dry weight of starting material),and consisted of 36.428% PW1,1.822% PW2,and much smaller amounts of the three remaining fractions.Polysaccharide concentrations in the five fractions,as measured using the phe...
【关键词】 蛹虫草; 超虑分离; 分子量; NO产量; 巨噬细胞;
【Key words】 Cordyceps militaris; ultrafiltration; molecular weight fractions; nitric oxide production; macrophage;
【基金】 上海市科技兴农重点攻关项目[编号:沪农科功字(2009)第2-2号]的部分研究内容
【分类号】S567.35