Author/Authors :
Li، نويسنده , , Jingjing and Ji، نويسنده , , Li and Sun، نويسنده , , Lin and Wei، نويسنده , , Ningning and Zhu، نويسنده , , Jingjing and Chen، نويسنده , , Xiguang and Tai، نويسنده , , Guihua and Zhou، نويسنده , , Yifa، نويسنده ,
Abstract :
A water-soluble polysaccharide (HA) was extracted from the Herba Asari root. HA was separated into a starch-like glucan fraction (HA1) and a pectin fraction (HA2) using DEAE-cellulose. HA2 was further fractionated into three pectic polysaccharides, HA2-a, HA2-b and HA2-c, using ion-exchange chromatography. NMR and sugar composition analyses demonstrated that HA2-a is an arabinogalactan (AG) and HA2-b and HA2-c are xylogalacturonans (XGA) with AG domains. Lymphocyte proliferation assays showed that both the neutral polysaccharide and acidic polysaccharide were potent B and T cell stimulators that may have two different modes of action.
