Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Antioxidant compound from the Lycopersicon esculentum

토마토(Lycopersicon esculentum)로부터 GSH 회복능을 보이는 항산화 화합물의 분리 동정

  • Kim, Hyoung-Geun (Graduate School of Biotechnology and Department of Oriental Medicinal Biotechnology, Kyung Hee University) ;
  • Jeon, Hyeong-Ju (Department of Food & Nutrition, Jangan University)
  • Received : 2020.09.17
  • Accepted : 2020.10.07
  • Published : 2020.12.31
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Abstract

The liquids of Lycopersicon esculentum were extracted with 70% aqueous MeOH and the concentrates were partitioned into EtOAc, n-BuOH, and H2O fractions. The repeated silica gel and octadecyl silica gel column chromatographies for the EtOAc fraction, whose activity was confirmed, led to isolation of one flavonol compound. The chemical structures of the compound were determined as quercetin (1) based on spectroscopic analyses including nuclear magnetic resornance, infrarad spectroscopy, and mass spectroscopy. Through this study, the antioxidant efficacy was confirmed by demonstrating that the L. esculentum fraction showing an increase in glutathione mean (GM) and a decrease in glutathione heterogeneity (GH) uniformly raises the intracellular glutathione (GSH) level.

토마토 액상을 70% MeOH 수용액으로 추출하고, 얻어진 추출물을 EtOAc, n-BuOH 및 물로 용매 분획 하였다. 이 중 활성이 확인된 EtOAc 분획으로부터 활성을 측정해 가며 silica gel과 octadecyl silica gel column chromatography로 정제하여 1종의 화합물을 분리 하였다. 화합물의 화학구조는 nuclear magnetic resornance, mass spectroscopy 및 infrarad spectroscopy 등의 스텍트럼 데이터를 해석 하여 quercetin (1)으로 동정 하였다. 본 연구를 통해서 glutathione mean의 증가와 glutathione heterogeneity의 감소를 보인 토마토 분획물이 세포 내 glutathione 수준을 균일하게 올려준다는 것을 입증함으로써 항산화 효능을 확인할 수 있었다.

Keywords

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