| antimicrobial activity in methanolic extracts of several plant species from northern argentina. | thirty-nine native plant species were collected from the provinces of chaco and formosa, in northern argentina, and were screened for antimicrobial activity. the plants were dried and extracted thoroughly with methanol. the dry extracts, dissolved in dimethylsulfoxide, were tested for inhibition of microbial growth via microplate assay with an oxidation-reduction dye. the test organisms were: escherichia coli, salmonella typhimurium, pseudomonas aeruginosa, klebsiella pneumoniae, staphylococcus ... | 2004 | 15070177 |