Biodegradation of saturate fraction of crude oil and production of signature carboxylic acids - Université de Pau et des Pays de l'Adour Accéder directement au contenu
Article Dans Une Revue Chemosphere Année : 2023

Biodegradation of saturate fraction of crude oil and production of signature carboxylic acids

Résumé

Bacteria degrading large portion of saturated hydrocarbons are important for crude oil bioremediation. This study investigates Novosphingobium sp. S1, Gordonia amicalis S2 and Gordonia terrae S5 capability of degrading wide range of saturated hydrocarbons from Congo Bilondo crude oil and discusses the degradation pathway. A parallel analytical approach combining GC-MS and LC-HRMS enabled characterization of saturated hydrocarbons and comprehensive determination of carboxylic acid metabolites produced during biodegradation, respectively. Results showed that the three strains could efficiently degrade the n-alkanes (C10–C28) as well as methyl-substituted alkanes (C11–C26). The series of mono-, hydroxy- and dicarboxylic acids identified in this study confirmed the active biodegradation of the saturate fraction and suggest their degradation was via the bi-terminal oxidation pathway. This is the first study linking these bacterial species to bi-terminal oxidation of the saturated hydrocarbons. The study highlights the potential application of the bacterial strains in the bioremediation of crude oil contaminated sites. Additionally, while carboxylic acids is indicated as a suitable and valuable metabolic biomarker, its application is considered feasible and cost effective for rapid monitoring and evaluation of hydrocarbon biodegradation.
Fichier non déposé

Dates et versions

hal-04189592 , version 1 (28-08-2023)

Identifiants

Citer

Kevin Iyere Ehiosun, Simon Godin, Vicmary Vargas, Hugues Preud'Homme, Regis. Grimaud, et al.. Biodegradation of saturate fraction of crude oil and production of signature carboxylic acids. Chemosphere, 2023, 339, pp.139773. ⟨10.1016/j.chemosphere.2023.139773⟩. ⟨hal-04189592⟩
32 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More