Journal
BRAZILIAN JOURNAL OF MICROBIOLOGY
Volume 45, Issue 4, Pages 1317-1323Publisher
SPRINGER
DOI: 10.1590/S1517-83822014000400023
Keywords
Alcanivorax; bioemulsificant exopolysaccharide (EPS2003); oil spill
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Funding
- National Counsel of Research (CNR) of Italy
- Italian Project PRIN System Biology
- National Operative Project PON RC STI-TAM
- National Operative Project PON RC SEA-PORT
- PNRA STRANgE
- European Project KILL-SPILL [KILL-SPILL-FP7-KBBE-2013.3.4-01]
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Oil spill microcosms experiments were carried out to evaluate the effect of bioemulsificant exopolysaccharide (EPS2003) on quick stimulation of hydrocarbonoclastic bacteria. Early hours of oil spill, were stimulated using an experimental seawater microcosm, supplemented with crude oil and EPS2003 (SW+OIL+EPS2003); this system was monitored for 2 days and compared to control microcosm (only oil-polluted seawater, SW+OIL). Determination of bacterial abundance, heterotrophic cultivable and hydrocarbon-degrading bacteria were carried out. Community composition of marine bacterioplankton was determined by 16S rRNA gene clone libraries. Data obtained indicated that bioemulsificant addition stimulated an increase of total bacterial abundance and, in particular, selection of bacteria related to Alcanivorax genus; confirming that EPS2003 could be used for the dispersion of oil slicks and could stimulate the selection of marine hydrocarbon degraders thus increasing bioremediation process.
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