Faculty of Arts and Science, Biology Department, Adnan Menderes University, 09010 Aydin, Turkey.
Indian J Microbiol. 2012 Mar;52(1):104-8. doi: 10.1007/s12088-011-0227-x. Epub 2011 Sep 14.
A total of 201 thermophilic bacteria isolated from various thermal spring, mud and soil were tested for their antibacterial activity. Among the mostly active isolates, Geobacillus toebii HBB-247 was further examined. Bacteriocin-like inhibitory substance (BLIS) produced by strain HBB-247 was found to be stable up to 60°C, sensitive to proteolytic enzymes and effective against Enterococcus faecalis, Listeria sp., E. avium, Clostridium pasteurianum, Cellulomonas fimi and some thermophilic strains isolated and identified in this study. As a result of Tricine-SDS-PAGE molecular weight of BLIS was estimated about 38 kDa. Production studies showed that G. toebii HBB-247 starts to produce antibacterial substance at early logarithmic phase of growth and maximum production was detected at the end of the logarithmic phase.
从各种温泉、泥和土壤中分离出的 201 株嗜热菌被测试其抗菌活性。在大多数活性分离物中,进一步研究了 Geobacillus toebii HBB-247。发现菌株 HBB-247 产生的细菌素样抑制物质 (BLIS) 在高达 60°C 时稳定,对蛋白酶敏感,对粪肠球菌、李斯特菌、鸟肠球菌、丙酮丁醇梭菌、纤维单胞菌和本研究中分离和鉴定的一些嗜热菌株有效。由于 Tricine-SDS-PAGE,BLIS 的分子量约为 38 kDa。生产研究表明,G. toebii HBB-247 在对数生长早期开始产生抗菌物质,在对数生长末期检测到最大产量。