Abstract
PHYTOCHEMICAL SCREENING AND ANTIMICROBIAL ACTIVITIES OF LEAF EXTRACTS OF GUAVA(PSIDIUM GUAJAVA L.)

Ilma Siraj, Kamraj Singh and Sovan Bagchi*

ABSTRACT

The antimicrobial activity and phyto-chemicals from aqueous and ethanol extracts of Psidium guajava leaves were evaluated. Aqueous and ethanol extracts of Psidium guajava leaves show the presence of phytochemicals like alkaloids, glycosides, saponins, phenolic compounds, etc. The guava leaves exhibited anti bacterial activities in both the ethanol and aqueous extracts. The ethanol extracts of the guava leaf showed greater antibacterial activity as compared to aqueous extracts. The present study was aimed to evaluate the role of P. guajava extracts on microorganisms such as Klebsiella sp., Pseudomonas sp. and Proteus sp. The antibacterial activity of these extracts give an idea about which extract is effective against above mentioned bacteria after preliminary screening for antibacterial activity by well diffusion method. Both the ethanol and aqueous extracts showed inhibitory action against the growth of bacteria under study with varying degree of activity.

Keywords: Plant extracts activity; Medicinal plants; Antimicrobial activity; Guava leaf.


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