Polysaccharide Extraction from Radix pseudostellariae with Water Extracting-ethanol Precipitation Method

In order to efficiently extract the polysaccharide from Radix pseudostellariae,the techniques for water extraction-ethanol precipitation of polysaccharide from Radix pseudostellariae were optimized using the orthogonal test and single factor test focusing on the parameters including solid-liquid ratio,temperature,as well as period and times of the extraction.The results showed that the process was simple,repeatable,thus might be suitable for industrial production.