Current Issue : October-December Volume : 2011 Issue Number : 4 Articles : 3 Articles
The present review focus on the antiviral and antibacterial potential of seaweeds associated organisms. A large number of seaweeds and associated microorganism extracts and/or extracellular products have been found to have antibacterial activity, the antibacterial activity of aquatic microalgae was reported for Chlorella vulgaris. The antiviral effects of polysaccharides from marine algae toward mumps virus and influenza B virus were reported . Subsequently, polysaccharides fractions from extracts of red algae were found to inhibit herpes simplex virus (HSV) and other viruses. Compounds extracted from algae have in vitro or in vivo activity against a wide range of retroviruses, including herpes viruses (HSV-1, HSV-2, HCMV), togaviruses (Sindbis virus, Semliki Forest virus), paramyxoviruses (RSV), rhabdoviruses (vesicular stomatitis virus [VSV]), and human immune deficiency viruses (SIV, HIV) and also to on antimicrobial, antiprotozoal activity. Parasitic protozoans are single-celled organisms causing serious tropical diseases worldwide in both humans and animals. Malaria, trypanosomiasis and leishmaniasis are among the major parasitic diseases, seaweeds and associated microorganisms showed promising biopotential against them....
Distilled cow urine commonly known as “Gau Mutra”, is a well-known medicament in Indian traditional medicine. On the basis of its traditional use and literature references, this plant was selected for evaluation of its antimicrobial activity against Staphylococcus aureus, Pseudomonas aureogenosa, Staphylococcus epidermis, Shigella flexineri, Bacillus substilis , E. Coli.& S.aureus,Bacillus subtilis, S.epidermidis using the agar well (cup plate) diffusion method. Distilled cow urine inhibited the growth of gram positive bacteria, with zone of inhibition between 7 - 10 mm, and a gram negative bacterium with zone of inhibition between 9-12mm. The activities of the distilled cow urine on the inhibited pathogens using the zone of inhibition were not as effective as the standard commercial antibacterial disks of tetracycline, Ofloxacin, Azithromycin, Piperacillin, Nitrofurantoin, Gentamicin, Cefotaxime, Norfloxacin....
In this study we investigated phytochemical screening and In-vitro antibacterial activity of hexane, ethyl acetate, ethanol (70%v/v) and methanol extracts of Ficus semicordata leaves. The results were revealed the presence of steroids, terpenoids, flavonoids, glycosides, tannins, carbohydrates and saponins but do not give the positive results for oils, quinines and amino acids. The selected plant extracts were produced concentration dependent zone of inhibition against tested bacterial strains. The extracts showed more activity against gram negative organisms than gram positive organisms. The extracts showed better activity at highest concentrans i.e at 600 and 1200 µg/100µl. Among the four types of Ficus semicordata leaves extracts, the methanolic extract showed better activity than remaining extracts at 1200 µg concentrations against gram negative bacteria....
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