Abstract
The production and properties of biosurfactants synthesized by Halobacillus dabanensis and Pontibacillus chungwhensi, isolated from oil-contaminated mangrove sediments of Avicennia marina, Red Sea (Egypt) have been investigated. The two strains were classified as moderate halophile and halotolerant, respectively. The produced biosurfactants were considered as metabolites associated with the growth of H. dabanensis and P. chungwhensi and were able to reduce the interfacial tension to 20 and 19 mN/m, respectively. The partially purified biosurfactants showed high emulsiflcation value (E24) against n-hexadecane (68 and 72%, respectively). Biological degradation of n-alkane mixture and linear alkyl benzene after incubation of bacteria in Buslinell-Haas medium in presence and absence of the partially purified biosurfactants has been monitored. H. dabanensis and P. chungwhensi were capable of degrading 92.3 and 94.7% of n- alkane mixture and 76.5 and 76.7% of linear alkyl benzene, respectively. The biodegradation of n-alkane, achieved in the presence of biosurfactants was better than its degradation in control. The structural analysis of the biosurfactants proved them to be lipopeptides. Biosurfactant-producing halophilic/halotolerant microorganisms may play a significant role in accelerating remediation of oil-polluted saline environments.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
