Antibacterial potential of three seagrasses against human pathogens

To evaluate the antibacterial activity of Halophila stipulacea (H. stipulacea), Cymodocea serrulata (C. serrulata) and Halodule pinifolia (H. pinifolia) against seven human bacterial pathogens. The antibacterial activities of the extracts on the various test organisms using disc diffusion method and Minimum Inhibitory Concentraction (MIC). Methanol and chloroform extracts of all the three seagrasses were active against all the tested pathogens, whereas the hexane extract of seagrasses was not active against Staphylococcus aureus (S. aureus). Antibacterial activity of three seagrass screened, was in the order of H. pinifolia > H. stipulacea > C. serrulata. This antibacterial studies can further investigated on seagrasses for purification of bioactive substance and its possible utility in disease control.