The actinobacterial colonies isolated from the mangrove sediment samples of the station of the Burmanallah using Kuster’s agar medium. A total of ten morphologically distinct actinobacterial strains were selected. These strains were designated as AUBN-1, AUBN-2, AUBN-3, AUBN-4, AUBN-5, AUBN-6, AUBN-7, AUBN-8, AUBN-9 and AUBN-10. Morphologically distinct actinobacterial strains AUBN-1 to AUBN-10 were subjected to preliminary screening for cellulase enzymes activity. Screening for cellulase enzyme production was made using the Carboxy methyl cellulose agar medium. Higher cellulase enzyme production was found in the strain AUBN-9 with 18 mm of clear hydrolytic zone. Based on the performance of enzyme production, the potential strain AUBN-9 was selected for further conventional identification. The cultural and morphological characters were analyzed to identify the cellulase positive strain AUBN-9 and compared with the Streptomyces species given in the key of Nonomura 1974 and those described in the Bergy’s Manual of Determinative Bacteriology. Based on the results, the cellulase positive strain AUBN-9 was tentatively identified as Streptomyces roseoluteus. The present investigation concludes that the mangrove sediment samples of the Burmanallah, the Andamans contain a good diversity of culturableactinobacterial strains of Streptomyces. These strains are able to produce cellulase enzymes. These strains can be further evaluated for the commercial scale production of enzymes and possess vast potential in varied biotechnological and industrial applications.
