The antibacterial activity of the dry fruit extracts was assayed against eight human bacterial species including Salmonella typhi, Salmonella paratyphi A, Salmonella paratyphi B, Proteus vulgaris, Pseudomonas aeruginosa, Klebsiella mobilis, Escherichia coli and Staphylococcus aureus using the agar diffusion method. Dry fruits were extracted using petroleum ether, chloroform and ethyl acetate. Ethyl acetate extract showed maximum inhibition 26mm against showed Salmonella paratyphi A. It also showed inhibitory action against eight pathogen tested. R. terraphylla dry fruit extracts is found to be more potent and out of the three solvents used. Ethyl acetate is found to be most effective. The study suggests that the dry fruit extracts is possesses potential broad spectrum antimicrobial activity.
"An Investigation on the Antibacterial Activity of Rauvolfia tetraphylla Dry Fruit Extracts,"
Ethnobotanical Leaflets: Vol. 2009
, Article 11.
Available at: http://opensiuc.lib.siu.edu/ebl/vol2009/iss5/11