ANTI-ULCER ACTIVITY OF PSIDIUM GUAJAVA ON PYLORUS LIGATION INDUCED GASTRIC ULCER IN ALBINO RATS

The present study deals with the phytochemical analysis and evaluation of antibacterial activity of hydroalcohol, acetone, and hexane extracts of the leaves of Psidium guajava. The antimicrobial activity was measured by the agar well diffusion method. Gastric volume, pH, total and free acidity and the ulcerative index was also measured in hydroalcoholic extract of Psidium guajava on gastric ulcer pyloric ligation in rat. Glycosides, terpenoids, and tannins are only present in the hydro alcohol extract. The extracts are tested against gram-negative (Escherichia coli) and gram-positive (Staphylococcus aureus, Bacillus subtilis) bacterial strains. The zone of inhibition against microorganisms is direct proportional to the concentration of extract. Maximum zone of inhibition (24mm) against Staphylococcus aureus except hexane extract was seen. Psidium guajava leaves show maximum phytochemicals compounds and inhibition of microorganisms in hydroalcoholic extract. So the hydroalcoholic extraction was used for anti-ulcer activity. The present study was performed in pylorus ligation induced gastric ulcer model in albino rats in which the ability of hydroalcoholic extracts of Psidium guajava was tested at a dose level of 400 mg/kg body weight orally and compared with Ranitidine (10 mg/kg) as standard. From the results it is concluded hydro alcohol leaf extracts of Psidium guajava 400 mg/kg dose level showed significant anti-ulcer activity when compared to that of standard drug.