Cis and trans conformational changes of bacterial fatty acids in comparison with analogs of animal and vegetable origin

• Published in: Applied biochemistry and microbiology 2014-11, Vol.50 (6), p.668-674
• Main Authors: Ivankin, A. N, Kulikovskii, A. V, Vostrikova, N. L, Chernuha, I. M
• Format: Article
• Language: English
• Subjects: animals; Bacteria; Biochemistry; Biomedical and Life Sciences; elaidic acid; enzymatic treatment; Fatty acids; heat treatment; isomers; Life Sciences; lipid composition; Lipids; Medical Microbiology; Microbiology; raw materials; storage time; vegetables
• ISSN: 0003-6838; 1608-3024
• DOI: 10.1134/S0003683814060052

The conditions of the formations of trans isomers of fatty acids, depending on the method of processing and storage of the raw material of microbial, plant and animal origin, were investigated. In the composition of lipids, except for the main trans-isomer elaidic acid, nonsignificant amounts of trans -2-hexen-4-ynal, trans-2-formlcyclopro-panecarboxylate, methyl octadeca-9-yn-l1-trans-enoate, trans-2, 2-dimethyl-3-(2-propenyl)-ethyl ester, trans-9-octadecenoic acid, and trans-1,5-heptadiene, and mixed isomers of methyloctadeca-9-yn-11-trans-enoate,-methyl-9-cis, 11-trans-octadecadienoate, l-[trans-4-(2-iodo-ethyl) cyclohexyl]-trans-4-pentylcyclo-hexane and cis-9, and trans 11-octadecenoic acid. The major trans elaidic acid component was detected in natural objects of different origin in quantities not exceeding 0.05–0.11%. The combination of thermal processing with other parameters, especially enzymatic treatment, led to an increased proportion of trans isomers. The content of trans isomers is usually proportional to the time of storage of materials.