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9424047 
Journal Article 
New antibiotic substances of the streptomyces albus enzybiotic complex 
Todosiichuk, TS; Klochko, VV; Savchuk, YI; Kobzysta, OP 
2019 
1 
Mikrobiolohichnyi Zhurnal
ISSN: 1028-0987 
Natsional'na Akademiya Nauk Ukrainy 
81 
5 
62-72 
English 
The aim. Extraction and characterization of the metabolic products of antibiotic nature from bacteria Streptomyces albus, analysis of the antimicrobial complex from the perspective of an enzyme preparation development. Methods. Streptomyces albus UN 44, the producer of the bacteriolytic enzymes was used in the study. The antagonistic activity of the culture was determined by the streak plate method. The antibiotic activity was evaluated with the paper-disks method and with the bioautographic assay. Extracted antibiotic substances were analyzed with the thin-layer and liquid chromatography techniques coupled with mass spectrometry. Results. The compounds with antifungal activity were extracted from the S. albus UN 44. These compounds had a partition coefficient of 0.65 and an absorption maximum within 270 – 275 nm. The phenolic group was determined in their molecule too. The compounds were identified as bis(2-ethylhexyl)phthalate and 3-O-methylcyclopolic acid. Conclusions. For the first time there was detected the ability of the S. albus UN 44 to synthesize antibacterial and antifungal antibiotics that are related to phthalaldehyde derivatives. © 2019, Natsional'na Akademiya Nauk Ukrainy. All rights reserved. 
Antagonism; Antibiotics; Antimicrobial spectrum; Bacteriolysins; Chromatography; Enzybiotics; Streptomyces albus