Study on the Extraction Technology of Polysaccharide from Portulaca oleracea L.

The extraction technology of polysaccharide from portulaca oleracea L. was studied in this paper. On basis of single factor experiments such as extraction time, temperature and material-water ratio and so on, the optimum extraction technology was determined by orthogonal experiments. With the microwave-assisted extraction for over 30 minutes, material-water ratio was 1:40; the dry materials were extracted 5 hours at the temperature of 100℃ two times. The temperature of extraction was the significant factor. Extraction concentrated to proper volume was precipitated with 4 times volume of 95% ethanol for 4 hours.