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Biodegradation potential of crude petroleum by hydrocarbonoclastic bacteria isolated from Soummam wadi sediment and chemical-biological proprieties of their biosurfactants

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Academic year: 2021

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Biodegradation potential of crude petroleum by hydrocarbonoclastic

bacteria isolated from Soummam wadi sediment and

chemical-biological proprieties of their biosurfactants

Authors

Drifa Yalaoui-Guellal, Samira Fella-Temzi, Salima Djafri-Dib, Fatiha Brahmi, Ibrahim M Banat, Khodir Madani

Publication date 2020/1/1 Journal

Journal of Petroleum Science and Engineering Volume 184 Pages 106554 Publisher Elsevier Description

This work aims to evaluate the biodegradation potential of petroleum by hydrocarbonoclastic bacteria isolated from Soummam wadi sediments. The chemical-biological properties of their biosurfactants products were also determined. Percentage of petroleum degraded by Rhodococcus ruber, Alcaligenes faecalis and Cellulosimicrobium sp. reached the maximum of 56.5 ± 1.2%, 52.7 ± 1.1% and 49.7 ± 1.2% respectively. Chemical profile study of the biosurfactants confirms their lipopeptide nature. The antifungal activity of these biosurfactants has given diameters of the zones of inhibition varying between 11.66 ± 0.57 mm and 18.33 ± 0.57 mm. The antioxidant activity showed a low activity for the antiradical power using the DPPH * and the molybdate test. The biosorption capacity of lead showed maximum biosorption of 74.91 ± 2.1 μg/g of Rhodococcus ruber biosurfactants. These bacterial isolates may find …

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