FOOD SCIENCE ›› 2012, Vol. 33 ›› Issue (21): 83-86.

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Antioxidant Activities of Different Fractions of Ethanol Extract of Arctium lappa L. Leaves

  

  • Received:2012-06-21 Revised:2012-09-25 Online:2012-11-15 Published:2012-11-09
  • Contact: Hu Xi-lan E-mail:huxilan836@sohu.com

Abstract: This study was designed to investigate the DPPH, superoxide anion and hydroxyl free radical scavenging activities and reducing power of different fractions (petroleum ether, ethyl acetate and n-butanol) of the 95% ethanol extract of burdock (Arctium lappa L.) leaves using VC, VE and TBHQ as controls. The ethanol extract of burdock leaves revealed strong antioxidant activity in vitro. Ethyl acetate and n-butanol fractions had strong DPPH radical scavenging activity and were superior to TBHQ, and the content of chlorogenic acid in the two fractions was 44.34 mg/g and 35.48 mg/g, respectively.

Key words: burdock leaves, extract, antioxidant activity, chlorogenic acid content

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