天然产物研究与开发 ›› 2010, Vol. 23 ›› Issue (6): 1053-1056.
王 颖1,高其品2,李桂荣3,陈英红4,姜瑞芝4*
WANG Ying1,GAO Qi-pin2,LI Gui-rong3,CHEN Ying-hong4,JIANG Rui-zhi4*
1College of Light Industry and Food, South China University of Technology, Guangzhou 510641, China; 2Center for New Medicine Research, Changchun University of Chinese Medicine, Changchun 130117, China; 3School of Pharmacy, Yanbian University, Yanji 133000, China; 4Academy of Chinese Medicine and Material Medica of Jilin Province, Changchun 130021, China
摘要:
本研究以人参根水提物为原料,通过超滤得超滤液,超滤液浓缩后进行活性炭柱分离纯化,分别以水、5%、30%、60%和95%乙醇洗脱。理化性质测定结果显示30%乙醇洗脱组份(PGO)含糖量最高,同时含有蛋白质。PGO通过Sephadex G-15及DEAE-Sephadex A-50纯化得到糖肽PG-g,其由Ara、GlcA和GalA组成。甲基化分析结果表明PG-g以GlcA与GalA为非还原末端,以(1→3)-连接的GalA和(1→6)-连接的GlcA为主链,分别在GlcA的C3位与GalA的C6位存在分支点,同时还存在(1→2,4)-连接的Ara。糖与肽之间通过Ara-Hyp糖苷键连接在一起。PG-g含有14种氨基酸,以Cys和Tyr含量最高。