Bactéries des environnements chauds Algériens : isolement et mise en évidence de la production d’hydrolases

الملخص EN

As a part of a search for enzymes produced by extremophilic microorganisms isolated from the thermal water and the surrounding soil of thermal sources located in hammam, Debegh, Guelma, Algeria.Thirteen bacterial strains were purified, then tested for their catalytic activity, and finally identified.

The desired enzymatic activities (proteolytic, amylolytic, cellulolytic and pectinolytic) of bacterial strains were tested on a specific medium for each enzymatic activity.

All the bacterial strains have at least one enzymatic activity.

This allows the selection of these strains for their identification.

The results indicated the richness of the sampling site (thermal water and soil) in bacterial strains capable of producing important enzymes.

Indeed, this site is a potential source of enzymes that can be thermo-resistant and therefore very interesting for their industrial applications.

The phenetic characterization performed for bacterial strains allowed to have an access to certain morphological, biochemical and physiological properties of these microorganisms.The results showed the presence of 2 known genera, Bacillus and Thermobacillus with the dominance of the genus Bacillus.

As well as other genera whose tests are insufficient to determine them