Isolation and characterization of halophilic Archaea able to produce biosurfactants.

Journal of Industrial Microbiology & Biotechnology
S Kebbouche-GanaHocine Hacene


Halotolerant microorganisms able to live in saline environments offer a multitude of actual or potential applications in various fields of biotechnology. This is why some strains of Halobacteria from an Algerian culture collection were screened for biosurfactant production in a standard medium using the qualitative drop-collapse test and emulsification activity assay. Five of the Halobacteria strains reduced the growth medium surface tension below 40 mN m(-1), and two of them exhibited high emulsion-stabilizing capacity. Diesel oil-in-water emulsions were stabilized over a broad range of conditions, from pH 2 to 11, with up to 35% sodium chloride or up to 25% ethanol in the aqueous phase. Emulsions were stable to three cycles of freezing and thawing. The components of the biosurfactant were determined; it contained sugar, protein and lipid. The two Halobacteria strains with enhanced biosurfactant producers, designated strain A21 and strain D21, were selected to identify by phenotypic, biochemical characteristics and by partial 16S rRNA gene sequencing. The strains have Mg(2+), and salt growth requirements are always above 15% (w/v) salts with an optimal concentration of 15-25%. Analyses of partial 16S rRNA gene sequences of the...Continue Reading


Jan 1, 1979·Applied and Environmental Microbiology·D G CooperD F Gerson
Jan 1, 1992·European Journal of Clinical Pharmacology·M S al-GhamdiI S al-Saeed
Nov 1, 1989·The Journal of Applied Bacteriology·B Austin
Jun 1, 1988·Applied and Environmental Microbiology·D R CameronR J Neufeld
Oct 1, 1995·International Journal of Systematic Bacteriology·A OrenA Teske
Dec 29, 1998·Applied Microbiology and Biotechnology·S S Cameotra, R S Makkar
May 18, 2000·Biotechnology and Applied Biochemistry·S H KimT H Lee
Jun 16, 2000·Applied Microbiology and Biotechnology·I M BanatS S Cameotra
May 17, 2001·Extremophiles : Life Under Extreme Conditions·R Margesin, F Schinner
Jun 20, 2001·Journal of Microbiological Methods·M S KuyukinaM I Ritchkova
Jun 6, 2003·Applied and Environmental Microbiology·Adria A BodourRaina M Maier
Sep 11, 2003·Advances in Applied Microbiology·Raina M Maier
Oct 1, 1955·Journal of Bacteriology·H P DUSSAULT
Jun 16, 2004·Current Opinion in Microbiology·Swaranjit Singh Cameotra, Randhir S Makkar
Feb 1, 1978·Applied and Environmental Microbiology·D M Ward, T D Brock
Sep 1, 1985·Applied and Environmental Microbiology·M JavaheriR M Knapp
Feb 1, 1987·Applied and Environmental Microbiology·D G Cooper, B G Goldenberg
Oct 1, 1988·Applied and Environmental Microbiology·J AntónF Rodríguez-Valera
Apr 6, 2006·International Journal of Systematic and Evolutionary Microbiology·A M CastilloA Ventosa
Sep 22, 2006·Colloids and Surfaces. B, Biointerfaces·Lígia R RodriguesRosário Oliveira
Sep 26, 2006·Trends in Biotechnology·Soumen MukherjeeRamkrishna Sen
Sep 13, 2008·Journal of Industrial Microbiology & Biotechnology·Namir I A HaddadBozhong Mu
Jan 1, 1995·World Journal of Microbiology & Biotechnology·A Ventosa, J J Nieto
Jan 1, 1991·World Journal of Microbiology & Biotechnology·A S Abu-RuwaidaA Khamis

❮ Previous
Next ❯


Jun 12, 2013·Extremophiles : Life Under Extreme Conditions·Ikram DjeridiPhilippe Cuny
Aug 20, 2011·Journal of Industrial Microbiology & Biotechnology·Carol D Litchfield
Aug 21, 2013·Applied Biochemistry and Biotechnology·Arun Kumar PradhanBarada Kanta Mishra
Mar 5, 2014·Applied Biochemistry and Biotechnology·Pongsak NoparatAtipan Saimmai
Mar 10, 2016·Extremophiles : Life Under Extreme Conditions·Yannick Y CorsellisCécile C Militon
Sep 16, 2015·Extremophiles : Life Under Extreme Conditions·Débora NercessianRoberto Paggi
Oct 28, 2015·Archaea : an International Microbiological Journal·James C Charlesworth, Brendan P Burns
Mar 25, 2015·Journal of Applied Microbiology·Z Ben BelgacemB Lievens
Aug 8, 2015·Origins of Life and Evolution of the Biosphere : the Journal of the International Society for the Study of the Origin of Life·Gordon Sproul
Apr 17, 2016·Environmental Science and Pollution Research International·Dorra HentatiMohamed Chamkha
Jun 26, 2020·Biofouling·Leonardo Gabriel Di MeglioDébora Nercessian
Dec 12, 2019·Extremophiles : Life Under Extreme Conditions·Júnia Schultz, Alexandre Soares Rosado
Jan 30, 2020·Scientific Reports·Sinara Carla da Silva AraújoLucymara Fassarella Agnez-Lima

❮ Previous
Next ❯

Related Concepts

Related Feeds


Recent advances in genomic sequencing has led to the discovery of new strains of Archaea and shed light on their evolutionary history. Discover the latest research on Archaeogenetics here.

Bioinformatics in Biomedicine

Bioinformatics in biomedicine incorporates computer science, biology, chemistry, medicine, mathematics and statistics. Discover the latest research on bioinformatics in biomedicine here.