Food Science and Biotechnology

  • 제18권4호
  • /
  • Pages.965-970
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  • 2009
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  • 1226-7708(pISSN)
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  • 2092-6456(eISSN)
한국식품과학회 (Korean Society of Food Science and Technology)
권호 표지

Antioxidant and Cytoprotective Activity of the Olive Leaf (Olea europaea L. var. Kalamata) Extracts on the Mouse Embryonic Fibroblast Cell

  • Ha, Ju-Yeon (Department of Food Science and Technology and Institute of Lotus Functional Food Ingredients, Dongguk University) ;
  • Goo, Sun-Young (Department of Life Science, Dongguk University) ;
  • Sung, Jung-Suk (Department of Life Science, Dongguk University) ;
  • Shin, Han-Seung (Department of Food Science and Technology and Institute of Lotus Functional Food Ingredients, Dongguk University)
  • 발행 : 2009.08.31
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초록

Oleuropein content of olive leaf extracts (OLE; ethanol extract) was evaluated by high performance liquid chromatography analysis. Oleuropein contents were $4.21{\pm}0.57$, $3.92{\pm}0.43$, $0.32{\pm}0.03$, $5.76{\pm}0.32$, and $32.47{\pm}0.25$ mg/100 g for ethanol extract, and hexane, chloroform, ethyl acetate, and butanol fraction, respectively. The removal of DPPH free radical increased in OLE and all 5 fractions of OLE in a concentration dependent manner. In order to investigate the antioxidant effect of OLE in vitro, 80%(v/v) ethanol OLE, $H_2O_2$, or combined treatment of 80%(v/v) ethanol OLE and $H_2O_2$ were applied on mouse embryonic fibroblast (MEF) cells. Cells were damaged by oxidative stress decreased their viability followed by increasing concentration of $H_2O_2$, but co-treatment of OLE and $H_2O_2$ showed an increase in cell growth about 20% compare to the cells treated with $H_2O_2$. OLE suppresses cytotoxicity induced by $H_2O_2$ in dose dependent manner. OLE treatment on MEF cells was also examined by analyzing cell cycle and apoptotic rate using flow cytometry. Apoptotic and necrotic cell accumulation was decreased in addition of OLE to $H_2O_2$ compare to the oxidative damaged cells. Taken together, these results demonstrated that OLE suppresses cytotoxicity induced by $H_2O_2$ and protect cells against oxidative stress on MEF cells.

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