Biodegradation potentiality of psychrophilic bacterial strain Oleispira antarctica RB-8(T)

Marine Pollution Bulletin
Gabriella GentileSimone Cappello

Abstract

The present study is focused on assessing the growth and hydrocarbon-degrading capability of the psychrophilic strain Oleispira antarctica RB-8(T). This study considered six hydrocarbon mixtures that were tested for 22days at two different cultivation temperatures (4 and 15°C). During the incubation period, six sub-aliquots of each culture at different times were processed for total bacterial abundance and GC-FID (gas chromatography-flame ionization detection) hydrocarbon analysis. Results from DNA extraction and DAPI (4',6-diamidino-2-phenylindole) staining showed a linear increase during the first 18days of the experiment in almost all the substrates used; both techniques showed a good match, but the difference in values obtained was approximately one order of magnitude. GC-FID results revealed a substantial hydrocarbon degradation rate in almost all hydrocarbon sources and in particular at 15°C rather than 4°C (for commercial oil engine, oily waste, fuel jet, and crude oil). A more efficient degradation was observed in cultures grown with diesel and bilge water at 4°C.

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Citations

Aug 3, 2020·Current Microbiology·Gabriella GentileSimone Cappello
Oct 30, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sun-Wook Jeong, Yong Jun Choi
Nov 24, 2018·Marine Environmental Research·Catherine BoccadoroStephane Le Floch
Sep 14, 2021·Applied Microbiology and Biotechnology·Luis Felipe Muriel-MillánLiliana Pardo-López
Mar 11, 2019·Journal of Molecular Microbiology and Biotechnology·Faezeh Babaei, Alireza Habibi

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