Abstract

Antiproliferative secondary metabolites producing bacterial strain AVSC4 isolated from marine sediments was identified as Bacillus flexus based on 16S rRNA gene sequence analysis. Under the strategy of liquid- liquid extraction, the crude extract was obtained showed significant antibacterial activity against different clinical pathogens. 0.5% methionine and 0.4% NaCl act as inducers for maximizing the growth and antibacterial activity of strain at pH 7 and 40°C. Heptadecanoic acid and methyl hexadecanoic acid were identified as major and dominant secondary metabolites by GC-MS analysis and also showed significant antiproliferative activity against HT-29 (Human colorectal adenocarcinoma) and A-549 (Lung Cancer) with IC50 value 93.4 µg/ml and 50.04 µg/ml.

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