Antioxidant activity in vitro of polysaccharides from Artemisia rupestris L.
The antioxidant activity in vitro of Artemisia rupestris L.polysaccharides was studied.The reduction,the efficiency of scavenging the hydroxyl radical,superoxide anion radical,DPPH free radical of Artemisia rupestris L.polysaccharides was examined by spectrophotometry.The results showed that when the concentration of polysacchande is 0.75 mg/mL,the reductive capability of Artemisia rupestris L polysaccharides and Vc have equivalent effects,the reductive capability of Artemisia rupestris L.polysaccharide in β-carotene/linoleic acid system is stronger than Vc,EC50 of polysaccarides to ·OH,O2-· and DPPH· were 7.73 mg/mL,1.57 mg/mL and 0.09 mg/mL respectively.Therefore,Artemisia rupestris L.polysaccharides had a good role in anti-oxidation and anti-aging and had a great potential for development of anti-oxidation and anti-aging food.