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J Ethnopharmacol. 1996 Jul 5;52(3):171-4.

Screening of some Cuban medicinal plants for antimicrobial activity.

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Laboratorio Central de Farmacología, Facultad de Medicina Dr. Salvador Allende, Cindad de La Habana, Cuba.


The antimicrobial activities of 23 extracts of 12 Cuban plant species reported in traditional medicine were tested. The agar diffusion method was used to assess the activity against four bacteria and one yeast: Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa and Candida albicans. The results, evaluated as the diameter of the inhibition zone of microbial growth, showed that nine extracts were active against Gram-positive bacteria but only two of these proved to be also active against Gram-negative bacteria. None of the extracts inhibited the growth of the yeast. The most susceptible bacterium was Staphylococcus aureus and the best antibacterial activity was shown by Schinus terebenthifolius.

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