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Yuping Li,Li-Hua Yao,Guan-Jie Wu,Xiao-Fang Pi,Yan-Chun Gong,Ruo-Shong Ye,Chen-Xi Wang 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.6
Novel small-molecule polysaccharide fractions,named POP II and POP III, were purified from Portulacaoleracea L. with average Mw values of 9.25 and 8.03 kDa,respectively. Monosaccharide analysis revealed that POP IIwas composed of Rha, Ara, Man, Glc, and Gal with molarratios of 1: 1.42: 0.44: 0.88: 1.59. POP III was composedof Rha, Ara, Glc, and Gal with molar ratios of 1: 1.16:0.23: 0.59. The antioxidant activities of the fractions wereevaluated using cell-free and cell-mediated radical generatingsystems. POPII and POP III possessed strong antioxidantactivities in both systems. The 2 novel polysaccharidefractions extracted from P. oleracea L. can be developed asnatural antioxidants for treatment of free radical-relateddiseases.