FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (17): 186-189.doi: 10.7506/spkx1002-6630-201117038

• Basic Research • Previous Articles     Next Articles

Antioxidant Activity in vitro of Polysaccharides from Alternanthera philoxeroides (Mart.) Griseb

CAI Ling-yun1,2，ZHOU Jiang-ju1，YUE Li2，HUANG Guo-xue1，WANG Yan1，HE Shun-mei2，FU Fa-qiong2   

  1. (1. College of Environmental and Life Science, Kaili University, Kaili 556011, China；2. Key Laboratory for Southwest Wildlife Resouces Conservation, Ministry of Education, College of Life Science, China West Normal University, Nanchong 637002, China)
  • Published:2011-08-30

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Abstract: Objective: To study the antioxidant activity in vitro of polysaccharides from the whole plant of Alternanthera philoxeroides (Mart.) Griseb (APG). Methods: The antioxidant activity of polysaccharides from APG was evaluated by reducing power and scavenging capacities against DPPH and DMPD free radicals. Results: The antioxidant activity of polysaccharides from APG at various concentrations displayed an obvious difference. Compared with vitamin C, polysaccharides from APG had higher antioxidant activity. The EC50 values of polysaccharides from APG and vitamin C against DPPH free radicals were 26.93 mg/L and 47.22 mg/L, and against DMPD free radicals were 73.42 mg/L and 71.25 mg/L, respectively. Conclusion: Polysaccharides from APG is an effective and multifunctional natural antioxidant and radical scavenger so that it has potential exploitation and utilization.

Key words: Altemanthera philoxeroides (Mart.) Griseb (APG) , polysaccharide, antioxidant activity

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