Recent Advances in Jujube(Zizyphus jujuba Mill.)Polysaccharides: Extraction,Isolation and Purification and Bioactivities

The jujube(Zizyphus jujuba Mill.)fruit has been used historically as an herbal medicine and vegetable for nearly four thousand years. In recent decades,jujube polysaccharides,attracting a great deal of attentions,are a complex heteroglycan. The phytochemical and pharmacological studies have shown that the polysaccharides are one of major biologically active components of the jujube fruit. They have various biological effects,including immunomodulatory,antioxidant,antitumor,hepatoprotective effects,and regulating intestinal flora. The objective of this manuscript is to review the recent years of jujube polysaccharide studies,including extraction,isolation and purification methods,structural characteristics,as well as bioactivities. The review provides basis for improving the utilization rate and further studying the relationship between structure and activity of jujube polysaccharides.