In vitro study of antimicrobial activity in freshwater mussel (Lamellidens marginalis) extracts

Anti-bacterial activity was evaluated in different crude extracts of commercially important, edible freshwater bivalves, namely Lamellidens marginalis, collected from the Godavari river of Andhra Pradesh (India). Three different procedures, viz Aqueous, Chloroform and Acetone, were followed to prepare the extracts. The efficacy of the extraction procedure was assessed on the antimicrobial activity. Antimicrobial assay was carried out against 8 bacterial strains (3 gram positive and 5 gram negative bacteria) and 1 species of fungi. The acetone extracts showed significant activity against the tested organisms as compared to aqueous and chloroform extracts. The findings of the present study confirmed that the antimicrobial activity in freshwater bivalves appeared to be dependent on the extraction