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wangjun520: ½ð±Ò+30, ²©Ñ§EPI+1 2014-05-16 15:26:06
In the present study, we extract polysaccharides from banana (Musa nana Lour.) and investigate their antioxidant capacities. We extract the polysaccharide by water and determine it content using phenol-sulfuric acid method. In addition the banana polysaccharide scavenging abilities on DPPH and OH free radicals were measured. The results showed that banana peel contained 13.65% polysaccharide. 160mg/l polysaccharide sample scavenged 67% DPPH, equal to 8.24mg/l Vc, and the  scavenging effect of 64mg/ml sample on OH free radicals reached 51.33-53.46%. In the testing  range, the OH scavenging ability increased with the sample concentration rising. There existed much polysaccharide in banana peel with antioxidant abilities.
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