Screening of DPPH radical scavenging and antimicrobial activity of extracts from local some native plants

국내 자생 식물추출물의 DPPH radical 소거활성 및 항균성 스크리닝

  • 김현수 (중원대학교 한방식품바이오학과) ;
  • 안정좌 (중원대학교 한방식품바이오학과) ;
  • 최태호 ((주)에스앤텍) ;
  • 황태영 (중원대학교 한방식품바이오학과)
  • Received : 2014.05.07
  • Accepted : 2014.06.24
  • Published : 2014.08.30


This study was conducted to determine the antioxidant potentials of some available plants to source alternate antioxidants and antibiotics. The antioxidant activity was evaluated by determining the antioxidant activity reducing powers and 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activities of extracts from some local edible native plants. The DPPH radical scavenging activity of the extracts was found to have been 0.41-94.84%. The Elsholtziasplendens NAKAI extract ($85^{\circ}C$, ethanol, accelerated solvent extraction) showed the highest level of antioxidant activity. Eight samples of plant extracts were evaluated for their antimicrobial activities against three microflora (Bacillus subtilis, Escherichia coli, and Candida albicans) using disc diffusion assay. Two samples (Geranium krameri FR. Et SAV. and Cleyera japonica Thunb.) had much more intensive antimicrobial activities than the control. However, their DPPH free radical scavenging activity levels were only 14.50 and 13.85, respectively. It is suggested that they could be used as natural preservatives against bacterial contamination in cosmetics and foods, in place of the common synthetic preservatives currently used.


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