Free Radical Scavenging Effect of Seed and Skin Extracts from Campbell Early Grape (Vitis labruscana B.)

국내산 포도 캠벨종의 종자 및 과피 추출물의 Free Radical 소거능 탐색

  • 박성진 (강원대학교 바이오산업공학부) ;
  • 이현용 (강원대학교 바이오산업공학부) ;
  • 오덕환 (강원대학교 바이오산업공학부)
  • Published : 2003.02.01


This study was conducted to determine optimal extraction condition and free radical scavenging effect of ethanol extracts of Campell Early grape seeds and skins at different temperatures, and of organic solvent fractionated from ethanol extracts of grape seeds and skins. The free radical scavenging effect was tested using 1,1-diphenyl-2-picrylhydrazyl (DPPH) method and expressed as dose required for a 50% reduction of DPPH radical (RC$_{50}$). The extraction yields were increased with increasing the extraction temperature but it was not related with ethanol concentrations. The ethanol extract of grape seeds obtained at 5$0^{\circ}C$ showed the more stronger RC$_{50}$ (16.8 $\mu\textrm{g}$/mL) than those of both 3$0^{\circ}C$ and 78$^{\circ}C$. The ethylacetate fraction obtained from ethanol extract of grape seed showed the strongest RC$_{50}$ (15.4 $\mu\textrm{g}$/mL). Overall, both ethanol extracts and their fractions of grape seeds showed significantly stronger free radical scavenging effect than those of skin extracts.racts.


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