Shuichi K, Hiroyuki A, Hirohide T. Isolation of antidiabetic components from white-skinned sweet potato(Ipomoea batatas L.) [J]. Biosci., Biotechnol. Biochem., 2001, 65(1):109-114.[2] Li Y N, Zhao M M, Peng Z Y, et al. Study on the isolation and purification of sweet potato glycoprotein from the cultivar-Beijing 2 and its antilipemic function [J]. Food Science (食品科学), 2003, 4(1):118-121 (in Chinese).[3] Lim K T, Son Y O, Lee J C, et al. Effects of glycoprotein from Ulmus davidiana Nakay on hydroxyl radical induced cytotoxicity and on activation of nuclear factor-B and activator protein-1 in cultured mouse primary thymocytes [J]. Korean J. Food Sci. Biotechnol., 2002, 11(1):172-178.[4] Oh P S, Lim K T. Antioxidant activity of dioscorea batatas decne glycoprotein [J]. Eur. Food Res. Technol., 2008, 226(3): 507-515.[5] Miyazaki Y, Kusano S, Doi H, et al. Effects on immune response of antidiabetic ingredients from white-skinned sweet potato (Ipomoea batatas L.) [J]. Nutrition, 2005, 21(3):358-362.[6] Sasaki T, Uchida H. Antitumor activity and immunomodulatory effect of glycoprotein fraction from scall oppartinopecten yessoensis [J]. Comp. Biochem. Phys., 1992, 103(1):102-106.[7] Li X W, Zhang K C, Xu G X, et al. Experimental research on prescription for anti-aging and prolonging life span [J]. J. Hunan College of Traditional Chinese Medicine (湖南中医药大学学报), 1991, 11(3):33-36 (in Chinese).[8] Niu F G, Wang J P, Wang F, et al. Study on antioxidation effect in vivo of glycoprotein from extract of Rubus chingii Hu[J]. Science and Technology of Food Industry (食品工业科技), 2010, 31(12):134-136 (in Chinese).[9] Wang F, Yang H J, Duan Y F. Study on the extraction technology of glycoprotein from Rubus chingii Hu.[J]. J. Anhui Agricultural Sci.(安徽农业科学), 2009, 37(8):3756-3758 (in Chinese).