Production of Lipopeptide Biosurfactant by a Hydrocarbon-Degrading Antarctic Rhodococcus.

ABSTRACT: Rhodococci are renowned for their great metabolic repertoire partly because of their numerous putative pathways for large number of specialized metabolites such as biosurfactant. Screening and genome-based assessment for the capacity to produce surface-active molecules was conducted on Rhodococcus sp. ADL36, a diesel-degrading Antarctic bacterium. The strain showed a positive bacterial adhesion to hydrocarbon (BATH) assay, drop collapse test, oil displacement activity, microplate assay, maximal emulsification index at 45% and ability to reduce water surface tension to < 30 mN/m. The evaluation of the cell-free supernatant demonstrated its high stability across the temperature, pH and salinity gradient although no correlation was found between the surface and emulsification activity.

SUBMITTER: Habib S 

PROVIDER: S-EPMC7504157 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature