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논문 기본 정보

자료유형
학술저널
저자정보
Hyun Young Kim (Gyeongnam National University of Science and Technology) Seung Mi Sin (Pusan National University) Sanghyun Lee (Chung-Ang University) Kye Man Cho (Gyeongnam National University of Science and Technology) Eun Ju Cho (Pusan National University)
저널정보
한국식품영양과학회 Preventive Nutrition and Food Science Preventive Nutrition and Food Science Vol.18 No.1
발행연도
2013.3
수록면
18 - 22 (5page)

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초록· 키워드

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To investigate radical scavenging effects and protective activities of bitter melon (Momordica charantia) against oxidative stress, in vitro and a cellular system using LLC-PK₁ renal epithelial cells were used in this study. The butanol (BuOH) fraction of bitter melon scavenged 63.4% and 87.1% of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals at concentrations of 250 and 500 ㎍/mL, respectively. In addition, the BuOH fraction of bitter melon effectively scavenged hydroxyl radicals (ㆍOH). At all concentrations tested, the scavenging activity of the BuOH fraction was more potent than that of the positive control, ascorbic acid. Furthermore, under the LLC-PK₁ cellular model, the cells showed a decline in viability and an increase in lipid peroxidation through oxidative stress induced by pyrogallol, a generator of superoxide anion (O₂<sup>-</sup>). However, the BuOH fraction of bitter melon significantly and dose-dependently inhibited cytotoxicity. In addition, 3-morpholinosydnonimine (SIN-1), a generator of peroxynitrite (ONOO<sup>-</sup>) formed by simultaneous releases of nitric oxide and O₂<sup>-</sup>, caused cytotoxicity in the LLC-PK₁ cells while the BuOH fraction of bitter melon ameliorated oxidative damage induced by ONOO<sup>-</sup>. These results indicate that BuOH fraction of bitter melon has protective activities against oxidative damage induced by free radicals.

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ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
REFERENCES

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