Abstract
The fatty acid profile and lipid content of four strains of Salmonella typhimurium were evaluated. The fatty acid profiles are characterized by the production of hexadecanoic acid (16:0), cyclic fatty acids (C17, C19) and hydroxytetradecanoic acids. Quantitative differences in the amounts of phospholipid were observed among the strains. The total extractable lipid and fatty acid contents were similar, but the presence of 3-hydroxytetradecanoic acid and small amounts of 2-hydroxytetradecanoic acid in all strains suggest the presence of lipid A. The quantities of phosphatidylserine (PS), the presence of 2- and 3-hydroxytetradecanoic and small amounts of a third isomeric 14:0 hydroxy fatty acid methyl ester may provide some insight into the relative difference in the strains. However, the amounts of quantified PS were the only observed differences among the strains.
