Two novel iso-branched octadecenoic acids from a Micrococcus species
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Updated: Oct 10, 2026

Identification of Fatty Acids in Bacillus cereus
Published on: December 5, 2016
N M Carballeira1, M Pagán, F Shalabi
1Department of Chemistry, University of Puerto Rico, P.O. Box 23346, San Juan, Puerto Rico 00931, USA. ncarball@upracd.upr.clu.edu
Abstract:
The novel fatty acids 16-methyl-6(Z)-heptadecenoic acid and 16-methyl-8(Z)-heptadecenoic acid were identified for the first time in nature in a species of the bacterium Micrococcus isolated from Lake Pomorie in Bulgaria. The principal fatty acids in this bacterium were a series of iso-anteiso fatty acids with chain lengths between C(14) and C(24), while the most interesting series of monounsaturated fatty acids was a family of Delta(6) fatty acids with chain lengths between C(14) and C(17). The novel compounds were characterized using a combination of GC-MS and chemical transformations, such as dimethyl disulfide derivatization and catalytic hydrogenation. The results established for the first time a bacterial origin for some of these Delta(6) fatty acids.
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