Actinobacteria are microorganisms that are widely distributed in nature. This bacteria phylum can be found in oceans but the rhizosphere is their main habitat. Since these microorganisms are also found in the Brazilian Semi-arid Region and are of great industrial and agronomic interest, the present study aimed to characterize the extracellular production profile of cellulase, amylase and xylanase in actinobacteria found in agricultural soils from that region. Cellulolytic activity was observed in 60.71% of the analyzed strains. All strains showed amylase production. The TUB 18 strain stood out with high values of the amylolytic (6.03) and cellulolytic (12.32) enzymatic index. Xylan halo of degradation was observed in 82.14% of the strains, where strains TUB 7 and TUB 8 stood out with the highest enzymatic index. Studies like this are important to obtain an overview of the genetic potential of microorganisms from Semi-Arid Regions, which can originate new promising industrial or agricultural products.
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