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Xue-Qiang Zha,Jian-Ping Luo,Lei Zhang,Jie Hao 한국식품과학회 2009 Food Science and Biotechnology Vol.18 No.2
The antioxidant properties of water extracted polysaccharides (PW), 1%(w/v) NaOH extracted polysaccharides (PN1), and 5%(w/v) NaOH extracted polysaccharides (PN5) were assessed in this paper. PW showed good capability of scavenging H₂O₂, anti-lipid peroxidation, reduction power, and scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH). The maximum values were all observed at the dose of 1 ㎎/㎖ sample. As far as the antioxidant activities of PN1 were concerned, the capability of scavenging superoxide radical, chelating metal, and total antioxidation showed higher than those of PN5. When polysaccharide concentration was 1 ㎎/㎖, the 3 index described above were attached 71.8%, 51.6%, and 446.3 μM Trolox equivalent, respectively. With respect to PN5, higher capabilities of scavenging hydroxyl free radicals were obtained while the peak of 84.8% was observed at the concentration of 1.0 ㎎/㎖. Moreover, the concentration-dependent influences were characterized in all cases.