Journal of Chuxiong Normal University ›› 2020, Vol. 35 ›› Issue (3): 86-90.

• Chemistry • Previous Articles     Next Articles

Study on Extraction and Antioxidant Activity of Flavonoids from Equisetum Ramosissimum

JIANG An, ZHANG Lun, YANG Shenming, ZHANG Jing   

  1. School of Chemistry and Life Sciences,Chuxiong Normal University,Chuxiong,Yunnan Province 675000
  • Received:2019-11-20 Online:2020-05-20 Published:2020-12-28

Abstract: In this paper,flavonoid has been extracted from Equisetum ramosissimum Desf.by microwave assisted method with ethanol.The effect of ethanol concentration,microwave power,solid-liquid ratio and extraction time has been studied with single-factor experimental method.Results of L9 (34) orthogonal experiment show that the optimum extraction parameters areethanol concentration 80%,microwave power 210 W,solid-liquid ratio 1:30 (g/mL),and extraction time 90 s.Under these conditions,the extraction rate is 9.9 mg/g,the percentage scavenging of O2-·and ·OH,are 28.59% and 41.27%,implying that these flavonoids have good ability to scavenge ·OH,O2-·.

Key words: Equisetum ramosissimum, microwave, flavonoids, antioxidant properties

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