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Three acidic polysaccharides (PPQA2, PPQA4 and PPQA5) were successfully purified from the water-extracted crude polysaccharides of Panax quinquefolius by combination of DEAE Sepharose and Sephacryl S-300 chromatography. The average molecular weights (Mws) of PPQA2, PPQA4 and PPQA5 were 2.3×104Da, 1.2×105Da, and 5.3×103Da, respectively. Monosaccharides components analysis indicated that PPQA2 and PPQA5...
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