Research Progress on Pharmacological Action and Extraction Techniques of Polysaccharides in Yam
Yam is a traditional medicinal and edible substance with a long edible history in China,which is widely used in industries such as food,medicine,animal husbandry and so on.As the main chemical components of yam,yam polysaccharides have attracted widespread attentions due to their various biological activities,such as immune regulation,antitumor,hypoglycemic effect,hypolipidemic effect,antioxidation,anti-inflammatory and so on.Based on this,the structure and types of yam polysaccharides were summarized,and the pharmacological activities of yam polysaccharides in recent years were reviewed from the aspects of immunomodulatory activity,antitumor activity,hypoglycemic and hypolipidemic activities,antioxidant activity,anti-inflammatory and antibacterial activities,and the extraction techniques of yam polysaccharides were summarized.Finally,the extraction and purification techniques,structure characterization techniques,clinical application tests and other aspects were prospected,which provided a reference for the future research and application of polysaccharide components of yam.
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