The antimicrobial activity of ethanol extract obtained from Rauvolfia tetraphylla was tested against bacterial species of Escherichia coli, Streptococcus lactis, Enterobacter aerogenes, Alcaligenes faecalis, Pseudomonas aeruginosa, Proteus vulgaris, and fungal species of Fusarium oxysporum, Alternaria helianthii, Curvularia lunata, Aspergillus niger, and Penicillium spp. Better antimicrobial activity was observed when the extracts showed maximum activity against E. coli, Enterobacter aerogenes, and Alcaligenes faecalis. Among different fungi tested, A. niger and Penicillium spp were found to be more sensitive to crude extract when compared to others.
Suresh, K.; Babu, S. Saravana; and Harisaranraj, R.
"Studies on In Vitro Antimicrobial Activity of Ethanol Extract of Rauvolfia tetraphylla,"
Ethnobotanical Leaflets: Vol. 2008
, Article 77.
Available at: http://opensiuc.lib.siu.edu/ebl/vol2008/iss1/77