Antimicrobial studies and phytochemical screening of stem bark in Syzigium cumini (L.) and Lannea coromentalica Houtt (Merr.)

The antibacterial properties of the stem bark in ethanol, methanol and aqueous extracts of two medicinal plants viz., Syzigium cumini (L.) and Lannea coromentalica Houtt (Merr.) were tested against two human pathogenic bacterial strains (Escherichia coli and Bacillus subtilis) and two fungal strains (Aspergillus niger and Aspergillus flavus) by agar well diffusion method. Lannea coromentalica of ethanol extract was exhibited maximum zone of inhibition against Bacillus subtilis (16mm) and Aspergillus niger (15mm). Aqueous extract showed minimum zone of inhibition against in Bacillus subtilis (12mm) and Aspergillus flavus (11mm). Syzigium cumini of methanol extract showed maximum zone of inhibition was against in Bacillus subtilis (15mm) and ethanol extract were Aspergillus niger (15mm). Preliminary phytochemical analysis of Lannea coromentalica showed the presence of steroids, phenols, protein, saponins, alkaloids, and coumarins were present.

Author(s): N. Panchavarnakili, S. Tamil Selvi*, D. Pavai, A. Panneerselvam and M. Prabakaran

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