Isolation, Identification and Antibacterial Activity of Marine Actinomycetes Isolated from Saltpan Region

The soil sample was collected from the salt pan of Bay of Bengal at Vedaranyam,Nagapattinam (Dt.) Tamilnadu, India. The physico-chemical parameters at the sample were analyzed by using standard procedures.Totally 10 actinomycetes were isolated and identified from the salt pan soil sample. Two actinomycetes namely Jonesia denitrificans and Nocardia amarae were dominant in their growth out of 10 isolated actinomycetes.

Antibacterial activity of Jonesia denitrificans and Nocardia amarae were studied against five human bacterial pathogens such as Salmonella typhi, Bacillus subtilis, Staphylococcus aureus, Vibrio cholerae and Klebsiella pneumonia. The acetone extract of Nocardia amarae exhibited promising antibacterial activity against Bacillus subtilis (25 mm). The isolation, characterization and the study on actinomycetes can be useful in the discovery of antibiotics.