Comparative evaluation of antibacterial activity of foot muscle extracts from genus Physa and genus Ceciloides [Mollusca: Gastropoda]

ABSTRACT

The aim of this study is to explore the presence of antimicrobial bioactive agents in the foot muscle extracts of snails belonging to genus Physa and Ceciloides. Antibacterial activity of foot extracts belonging to species named as P. fontinalis, P. gyrina, P. acuta, C. acicula, C. eulima, C. petitiana, was checked and compared against three bacterial strains i.e. E.coli, P. auroginosa, S. aureus by using disc diffusion method. The results were highly significant with maximum zone of inhibition of 20.10 mm in the P. fontinalis acetone extract and the least was 12.97 mm of C. eulima diethyl ether extract. The microdilution method was employed to observe MIC to evaluate antimicrobial resistance pattern of snails foot muscle extract against three mentioned strains. MIC of foot extracts was ranging from 0.03ug/ml-5 ug/ml for six species. TLC was carried out for profiling of extracts with positive results. Foot extracts from species of both genera eluted in different fractions of compounds with a good resolution in 100% n-hexane and ethyl acetate each. The plates developed in solvent system showed purple and yellow spots indicating the presence proteins and organic compounds showing it a promising canditadate for the therapeutic purposes: