title: [Effect of biosurfactants Acinetobacter calcoaceticus K-4 and Rhodococcus erythropolis EK-1 on some microorganisms].
abstract: It has been established that the preparations of biosurfactants Rhodococcus erythropolis EK-1 (0.61 -2.1 mg/ml) and Acinetobacter calcoaceticus K-4 (0.15 - 0.22 mg/ml) in a form of supernatants of the cultural liquid show antimicrobial effect in respect of a number of microorganisms (Bacillus subtilis BT-2, Escherichia coli IEM-1, Candida tropicalis BT-5, Candida albicans D6, Candida utilis BVC-65, Saccharomyces cerevisiae OB-3). No inhibiting effect of biosurfactant preparations of R. erythropolis EK-1 on the cells of S. cerevisiae OB-3 and E. coli IEM-I and antifungal effect of the both studied surfactants on Aspergillus niger P-3 and Fusarium culmorum T-7 were revealed. The survival of microbe cells depend on biosurfactants concentration in the preparations, on exposure time as well as on physiological state of test-cultures. It has been established that the surfactant preparations of A. calcoaceticus K-4 had a higher effect on the spores of B. subtilis BT-2, than on vegetative cells, thus decreasing the spore culture survival by 75% in 2 h of exposure.
authors.forename: T P
authors.initials: TP
authors.lastname: Pirog
authors.forename: A D
authors.initials: AD
authors.lastname: Konon
authors.forename: A P
authors.initials: AP
authors.lastname: Sofilkanich
authors.forename: A B
authors.initials: AB
authors.lastname: Skochko
mesh_terms: D016954:Acinetobacter calcoaceticus / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D000935:Antifungal Agents / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D012240:Rhodococcus / Q000737:chemistry*; D013501:Surface-Active Agents / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D013501:Surface-Active Agents