Neutral (EAP-1N) and acidic polysaccharides (EAP-2A) were isolated and purified from Epimedium acuminatum Franch.
EAP-2A had high content of uronic acid (9.46 ± 0.54%) and large average molecular weight (104.55 kDa).
EAP-2A exhibited significantly scavenging activities against free radical in vitro.
EAP-2A presented a stronger antioxidant capacity than EAP-1N in the mode of Caenorhabditis elegans.