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논문 기본 정보

자료유형
학술저널
저자정보
Hamed Moaz M. (Marine Microbiology Laboratory Marine Environmental Division National Institute of Oceanography a) Abdrabo Mohamed A.A. (Marine Microbiology Laboratory Marine Environmental Division National Institute of Oceanography a) Youssif Asmaa M. (Department of Botany and Microbiology Faculty of Science Alexandria University Egypt)
저널정보
한국미생물생명공학회 한국미생물·생명공학회지 한국미생물·생명공학회지 제49권 제3호
발행연도
2021.9
수록면
356 - 366 (11page)
DOI
10.48022/mbl.2106.06007

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Two marine actinobacterial isolates, RG3 and RG8, were identified using 16Sr DNA as Streptomyces althioticus RG3 and Streptomyces californicus RG8 and submitted to the database of genetic information with accession numbers MW661230 and MW661234, respectively; they were found to have emulsification indexes of 60 ± 2.5% and 53 ± 2.2%, respectively. The biosurfactants obtained were stable at a temperature of 35 for both strains; they were stable at 10% NaCl, in the case of S. althioticus RG3 and at 10?15% NaCl in the case of Str. californicus RG8; both strains produced the most biosurfactant when exposed to alkaline conditions. We characterized the biosurfactants, including features such as their chemical composition, using Fourier transform infrared spectroscopy analysis. The antimicrobial activity of the biosurfactant extracts was evaluated using the well diffusion method against Vibrio alginolyticus MK170250, Escherichia coli ATCC 8739, Pseudomonas aeruginosa ATCC 4027, and Staphylococcus aureus ATCC 25923. S. althioticus RG3 biosurfactants were found to have better antimicrobial activity than those of Str. californicus RG8, indicating that they may be used in pharmaceutical industries and in the manufacture of antifouling products.

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