Antioxidative Effects of Cultivation of Streptomyces sp. BH-405 Isolated from Marine Origin

해양에서 분리한 Streptomyces sp. BH-405 배양액의 항산화 효과

  • Published : 2000.04.01

Abstract

Antioxidative activity of c비ture of Streptomyces sp. BH-405 was investigated. After removal of pellets of Streptomyces sp. B BH-405, antioxidative substances were is미ated and suc$\infty$sively purified from culture of Streptomyces sp. BH-405 by by thin | layer chromatography $\pi$LC) or silica gel column chromatography. The fraction 3 obtained from ethylether fractionation of the C culture appeared highest level of anti oxidative activity as determined by thiocyanate method. Band 2 obtained by further P purification of this fraction showed higher anti oxidation level than that of same concentration of dl- $\alpha$ -tocopherol, butylated h hydroxy anisole (BHA). The band 2 showed higher rate of 1, 1.diphenyl 2-picrylhydrazyl (DPPH) decolorization than dl-$\alpha$-tocopherol. In the rat liver microsomes, band 2 rapidly inhibited lipid peroxidation which was initiated enzymatically by r reduced nicotinamide adenine dinucleotide phosphate (NADPH) or non-enzymatically by Fenton’s reagent. Band 2 inhibited on | lipid peroxidation of mitochondria or the linoleic acid hydro peroxide induced peroxidation system. It is concluded that band 2 obtained by fractionation of Streptomyces sp. BH-405 cultivation contained antioxidants with the capacity to inhibit oxidative m modification.

본 연구는 Streptomyces sp. BH-405의 배양액으로부터 유기용매로 추출하여 지질과 산화에 대한 항산화 효과를 실험하였다. Streptomyces sp. BH-405의 배양액을 ethylether로 추출한 후 silica gel column(100$\times$10 cm) chromatography로 분획한 획분을 POV로 측정한 결과 fraction 3에서 향산화 활성이 가장 높았다. 항산화 활성이 높은 fraction 3 획분을 다시 preparative TLC와 column chromatography로 더욱 정제하여 band 2를 얻었다. Band 2의 항산화 효과를 알아보기 위해 기존의 항산화제와 비교한 결과 이-$\alpha$-tocopherol, BHA보다 산화억제 효과가 높았으며 DPPH에 의한 수소 공여능은 실험결과가 우수하였다. 한편 band 2는 쥐 간의 microsome에 있어서 유리기의 소거기능이 있었고 NADPH 및 Fenton 시액에 위한 효소적 과산화 지질의 생성을 억제하였다. 그리고 mitochondria와 리놀산의 과산화 유도계에서도 지질의 과산화 과정에 생성하는 유리기의 형성을 차단하였다. 결론적으로 Streptomyces sp. BH-405의 배양액에서 얻은 획분인 band 2는 산화를 억제하는 활성이 있었다.

Keywords

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