First evidence of aerobic biodegradation of BTEX compounds by pure cultures of Marinobacter.

Sabrina Berlendis (1) , Jean Luc Cayol (1) , Frederic Verhe (1) , Sophie Laveau (1) , Jean-Luc Tholozan (1) , Bernard Ollivier (1) , Richard Auria (1)

1 Laboratoire de Microbiologie et Biotechnologie des Environnements Chauds

Marinobacter vinifirmus was shown to degrade toluene as sole carbon and energy source under aerobiosis and at NaCl concentrations in the range 30-150 g/L. Maximum toluene consumption rate, total CO2, and biomass productions were measured in the presence of 60 g/L of NaCl. Under these conditions, 90% of the carbon from toluene was recovered as CO2 and biomass. Maximum specific toluene consumption rate was about 0.12 mgC toluene mgC biomass(-1) h(-1) at NaCl concentrations between 30 and 60 g/L. It decreased to 0.03 mgC toluene mgC biomass(-1) h(-1) at 150 g/L. Besides toluene, M. vinifirmus degraded benzene, ethylbenzene, and p-xylene. Benzene and toluene were utilized to a lesser extent by another Marinobacter sp., Marinobacter hydrocarbonoclasticus.

Domaines: Ecosystèmes

Sabrina Berlendis, Jean Luc Cayol, Frederic Verhe, Sophie Laveau, Jean-Luc Tholozan, et al.. First evidence of aerobic biodegradation of BTEX compounds by pure cultures of Marinobacter.. Applied Biochemistry and Biotechnology, 2010, 160 (7), pp.1992-9. ⟨10.1007/s12010-009-8746-1⟩. ⟨hal-00756272⟩