Biodegradation potential of Serratiamarcescens for diesel/biodiesel blends

作者：de Souza Marcela Moreira; Colla Tatiana Simonetto; Bucker Francielle; Ferrao Marco Flores; Huang Chun Te; Andreazza Robson^*; de Oliveira Camargo Flavio Anastacio; Bento Fatima Menezes

来源：International Biodeterioration & Biodegradation, 2016, 110: 141-146.

DOI：10.1016/j.ibiod.2016.03.006

• Biodiesel
• Diesel
• Biodegradation
• Serratia marcescens
• Bioremediation
• Biotechnology

Biodiesel is considered to be a natural substitute for petroleum. Moreover, its low toxicity and susceptibility to microbial biodegradation as compared to fossil diesel could reduce the impact on ecosystems in the event of an accidental spill. However, there is a paucity of studies in this field. Thus in the present study, the diesel/biodiesel biodegradation potential of the Serratia marcescens strain 110 UFRGS, isolated from a harbor in southern Brazil, was investigated, using a mineral medium containing the following diesel/biodiesel blends: B5, B10, B25 or B100. The isolate exhibited the lowest increase in CFU mL(-1) and cell hydrophobicity in the treatment of B100. Infrared spectroscopy showed high percentages of biodegradation of the biodiesel blends, and B100 showed good biodegradability by the isolate under test. S. marcescens strain 110 UFRGS also displayed the presence of alkB gene. In summary, S. marcescens showed a high diesel/biodiesel degradation rate and is potentially useful for the bioremediation of environments contaminated with diesel/biodiesel.

• 出版日期2016-5