In vitro antimicrobial and chemical properties of petroleum ether, ethyl acetate and ethanol extracts of Pueraria tuberosa were evaluated. Among the test samples ethyl acetate extract showed pronounced antimicrobial activity, while ethanol extract exhibited the least activity and petroleum ether extract failed to inhibit the test pathogens. Preliminary phytochemical analysis of extracts revealed the presence of antimicrobial compounds such as alkaloids, flavonoids, coumarins, volatile oils and glycosides. The phenolic compounds and flavonoids were abundant in ethyl acetate extract when compared to other extracts. The broad spectrum of antimicrobial activity of ethyl acetate extract may be due to the presence of flavonoids. Based on the observations, P. tuberosa appears to be a valuable source for antimicrobial principles.
Venkata Ratnam, K. and Venkata Raju, R. R.
"Preliminary Phytochemical and Antimicrobial Properties of Pueraria tuberosa (Willd.) DC: A Potential Medicinal Plant,"
Ethnobotanical Leaflets: Vol. 2009
, Article 10.
Available at: http://opensiuc.lib.siu.edu/ebl/vol2009/iss8/10