Antioxidative Activity of Extracts of Aged Black Garlic on Oxidation of Human Low Density Lipoprotein

숙성 흑마늘 추출물의 Low Density Lipoprotein (LDL)의 항산화 효과

  • Yang, Seung-Taek (Department of Food Science and Biotechnology, Kyungsung University)
  • 양승택 (경성대학교 식품생명공학과)
  • Published : 2007.10.30


This study was developed to assess the antioxidative activity of aged black garlic extract on lipid peroxidation and low density lipoprotein (LDL). Antioxidative activity of aged black garlic extract on human low density lipoprotein (LDL) was investigated by monitoring a barbituric acid reactive substance (TBARS). Electron donating ability (EDA) of aged black garlic, ethanol extract was higher than that alliin and water extract. Aged black garlic water and ethanol extracts inhibited the $Cu^{2+}$ mediated oxidation of human LDL in a dose dependent manner at concentration of 10 and $20\;{\mu}g/ml$. Ethanol extract and water extract of aged black garlic almost completely inhibited J774 mediated LDL oxidation in electrophoretic mobility and conjugated diene. These results indicate that aged black garlic might play a protective antioxidant effects on LDL, probably affecting the structural properties for the LDL oxidation.

마늘을 발효시켜 만든 흑마늘의 지질 산화 억제 및 사람 Low Density Lipoprotein (LDL)에 대하여 항산화 활성을 실험하였다. 표준품으로서 마늘의 주성분인 alliin과 흑마늘의 에탄올과 물 추출물의 전자공여능을 각각 비교하여 측정한 결과 흑마늘 에탄을 추출물이 효능이 가장 높았다. 사람 LDL을 $Cu^{2+}$유도 LDL로 산화시킬 때 그 항산화능은 각 시료를 $10\;{\mu}g/ml$$20\;{\mu}g/ml$ 씩 첨가하며 TSARS를 측정한 결과 에탄을 추출물이 항산화 활성이 가장 높았으며 용량 의존형으로 나타났다. 흑마늘의 에탄올과 물추출물을 $10\;{\mu}g/ml$$20\;{\mu}g/ml$ 첨가한 후 J774 유도 산화에 대한 항산화 효과를 측정한 결과 각 추출물은 항산화 효과가 있었고 용량 의존형의 항산화 활성을 나타내었다. 흑마늘의 각 추출물을 이용한 실험에서 전기영동 이동상은 대조구에 비하여 $10\;{\mu}g/ml$$20\;{\mu}g/ml$에서 산화를 억제하였고 공액 2중 결합에 의한 실험에서도 항산화 효과가 있었으며 $20\;{\mu}g/ml$의 농도에서 거의 억제되었다.


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