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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Characterization of haloglycan, an exopolysaccharide produced by Halomonas stenophila HK30
International Journal of Biological Macromolecules, Volume 72, Year 2015
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Description
We have conducted a thorough study of the exopolysaccharide (EPS) produced by strain HK30 of Halomonas stenophila, which we have named haloglycan. This strain was chosen during an ongoing research programme aimed at finding novel exopolysaccharide-producing halophilic bacteria in unexplored hypersaline habitats. Strain HK30 was isolated from a saline-wetland in Brikcha (Morocco) and identified as belonging to the species H. stenophila. It produced EPS mainly during the exponential growth phase and to a lesser extent during the stationary phase. Culture parameters influenced both bacterial growth and EPS production, EPS yield always being directly related to the quantity of biomass. Under optimum culture conditions, strain HK30 produced 3.89g of EPS per litre of medium. The polymer was a sulphated heteropolysaccharide composed of two fractions, with molecular masses of 8.2×104 and 1.4×106. The crude EPS contained 44±0.1% w/w carbohydrates and the following monosaccharide composition: glucose (24±1.73), glucuronic acid (7.5±0.37), mannose (5.5±0.17), fucose (4.5±0.36), galactose (1.2±0.17) and rhamnose (1±0.05) (%, w/w). It produced solutions of high viscosity and pseudoplastic behaviour that showed interesting flocculating and emulsifying activities and was also involved in forming biofilm. © 2014 Elsevier B.V.
Authors & Co-Authors
Amjres, Hakima
Spain, Granada
Universidad de Granada, Facultad de Farmacia
Morocco, Tetouan
Université Abdelmalek Essaadi
Béjar, Victoria
Spain, Granada
Universidad de Granada, Facultad de Farmacia
Spain, Granada
Universidad de Granada
Quesada, Emilia
Spain, Granada
Universidad de Granada, Facultad de Farmacia
Spain, Granada
Universidad de Granada
Carranza, Diana
Spain, Granada
Universidad de Granada
Abrini, Jamal
Morocco, Tetouan
Université Abdelmalek Essaadi
Sinquin, Corinne
France, Plouzane
Ifremer Institut Francais de Recherche Pour L'exploitation de la Mer
Ratiskol, Jacqueline
France, Plouzane
Ifremer Institut Francais de Recherche Pour L'exploitation de la Mer
Colliec-Jouault, Sylvia
France, Plouzane
Ifremer Institut Francais de Recherche Pour L'exploitation de la Mer
Llamas, Inmaculada
Spain, Granada
Universidad de Granada, Facultad de Farmacia
Spain, Granada
Universidad de Granada
Statistics
Citations: 49
Authors: 9
Affiliations: 4
Identifiers
Doi:
10.1016/j.ijbiomac.2014.07.052
e-ISSN:
18790003
Study Locations
Morocco