EN
The changes in cellular fatty acid profiles, determined by gas chromatography, of Pseudomonas vesicularis and Pseudomonas stutzeri growing in a modified minimal medium with catechol or phenol are presented in this paper. P. vesicularis increased its ratio of saturated/unsaturated fatty acids from 1.92 to 4.05 and 5.72 when grown on glucose, phenol and catechol, respectively. In the case of P. stutzeri, the ratio changed from 2.56 to 8.28 and 4.65 under the same growth conditions. The increase in the abundance of saturated and cyclopropane fatty acids and forming new iso and anteiso fatty acids during growth of tested strains in the presence of catechol and phenol are suggested as a possible mechanism to tolerate tested aromatic compounds.