In vitro antibacterial effects of red alga Champia parvula (C. Agardh) of various solvents against human pathogenic bacteria

Abstract

The aim of the present study is to evaluate the antimicrobial inhibitory effect of Champia parvula (red alga) of various solvents at the concentration 100 g/mL, on pathogenic bacteria like Klebsiella pneumoniae, Proteus vulgaris, Bacillus cerus, Bacillus subtilius, Staphylococcus aureus, and Salmonella typhii were studied by the disc diffusion method. The present study reveals that a higher zone of inhibition against Salmonella typhii (15.4 0.2), Bacillus subtilius (13.8 0.1) , Staphylococcus aureus (10.7 0.2) and Proteus vulgaris (10.6 0.1) in the methanol extract alone, followed by acetone, benzene, chloroform, and ethyl acetate extracts showed moderate activity against most of the pathogens, whereas chloroform extract is inactive only against Bacillus cerus. The positive control streptomycin shows inhibitory action against all the pathogens studied. This study shows the potential of marine active compounds from Champia parvula as an antimicrobial agent for a disease free environment.