Streptomyces sp. L77-140 이 생산하는 항생물질의 분리정제 및 동정

Purification and Identification of an Antibiotic Produced from Streptomyces sp. L77-140

In the course of the screening for microorganism producing antibiotics, Streptomyces sp. L77-140 was discovered which produced a water-soluble basic antibiotic L77-140. By using paper disk anti-microbial assay, the productivity of antibiotic from Streptomyces sp. L77-140 was tested by several carbon and nitrogen sources such as soluble starch and soybean flour, respectively. L77-140 showed anti-microbial activities against Gram-positive and Gram-negative bacteria. From the culture supernatant, L77-140 was purified by cation exchange chromatography and silicagel column chromatography. In the pH stability test, L77-140 was stable under acidic and alkali conditions. Based on the spectroscopic measurement including Ultra Violet(UV), In Frared(IR), Nuclear Magnetic Resonance (NMR) and mass spectrum(Mass) analyses, L77-140 was identified as spenolimycin.