Bacteria able to produce surface active compounds (SACs) were isolated from hydrocarbon-contaminated environments. The phylogenetic diversity of the isolates was evaluated by 16S rRNA gene analysis. The production of bioemulsifiers and biosurfactants was determined on strains representative of 18 different bacterial genera. Cupriavidus sp. BSNC28C produced extracellular biosurfactants which reduce the surface tension into the culture medium up to 37.1 mN m-1. Sixteen strains, belonging to 11 different genera, released extracellular emulsifiers able to stabilise oil-water emulsions. Among them, the strains Bradyrhizobium sp. BSNC30A and Bosea sp. BSNC5B showed emulsification activities comparable to those of synthetic surfactants. Overall, the novel SAC-producing strains characterised in this work display promising features for the future development of economically efficient industrial-scale biotechnological processes. © 2009 Elsevier Ltd. All rights reserved.

Ruggeri, C., Franzetti, A., Bestetti, G., Caredda, P., La Colla, P., Pintus, M., et al. (2009). Isolation and characterisation of surface active compound-producing bacteria from hydrocarbon-contaminated environments. INTERNATIONAL BIODETERIORATION & BIODEGRADATION, 63(7), 936-942.

Isolation and characterisation of surface active compound-producing bacteria from hydrocarbon-contaminated environments

FRANZETTI, ANDREA;BESTETTI, GIUSEPPINA;
2009

Abstract

Bacteria able to produce surface active compounds (SACs) were isolated from hydrocarbon-contaminated environments. The phylogenetic diversity of the isolates was evaluated by 16S rRNA gene analysis. The production of bioemulsifiers and biosurfactants was determined on strains representative of 18 different bacterial genera. Cupriavidus sp. BSNC28C produced extracellular biosurfactants which reduce the surface tension into the culture medium up to 37.1 mN m-1. Sixteen strains, belonging to 11 different genera, released extracellular emulsifiers able to stabilise oil-water emulsions. Among them, the strains Bradyrhizobium sp. BSNC30A and Bosea sp. BSNC5B showed emulsification activities comparable to those of synthetic surfactants. Overall, the novel SAC-producing strains characterised in this work display promising features for the future development of economically efficient industrial-scale biotechnological processes. © 2009 Elsevier Ltd. All rights reserved.
Articolo in rivista - Articolo scientifico
biosurfactant
English
936
942
7
Ruggeri, C., Franzetti, A., Bestetti, G., Caredda, P., La Colla, P., Pintus, M., et al. (2009). Isolation and characterisation of surface active compound-producing bacteria from hydrocarbon-contaminated environments. INTERNATIONAL BIODETERIORATION & BIODEGRADATION, 63(7), 936-942.
Ruggeri, C; Franzetti, A; Bestetti, G; Caredda, P; La Colla, P; Pintus, M; Sergi, S; Tamburini, E
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/7634
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