Study on Pnysical and Chemical Property of Jujube Polysaccharide and It's Extraction

Conditions of extraction and physic-chemical property were studied using water extraction and alcohol deposit to extract the jujube polysaccharide from jujube.The effects of four factors such as the temperature of extraction,the proportion of water volume,the time of extraction,the number of extractions were investigated.With the orthogonal design of L9(33),the optimum technological conditions of extraction of polysaccharides from jujube were obtained as follows :adding 7 times water as much as jujube in 80 ℃ for 2 hours by 2 times extraction.The results showed that there were peptides and AA in jujube polysaccharide.