STUDY ON EXTRACTION PROCESS OF SWEET POTATO GLYCOPROTEIN

The technology and condition of extraction were studied in this paper,and water extraction was used to extract glycoprotein from sweet potato. Glycoprotein was extracted by water from sweet potato and it was precipitated by alcohol. A few main factors that affected the extracting rate were determined by the experiments of single factor. The extracting technology was choosen by orthogonal. Finally,the main factors from more important to less in affecting the extraction rate are as follows:extracting time,grinding degree,raw material and water ratio and extracting times. The result showed that the best technology are that grinding degree is 80mesh,raw material and water ratio is l:15,extracting time is 3 hours and extracting times is l.