An improved method for rapid evaluation of enzymatic cis / trans isomerization of C18:1 monounsaturated fatty acids
Food Chemistry, ISSN: 0308-8146, Vol: 404, Issue: Pt A, Page: 134618
2023
- 2Citations
- 5Captures
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Article Description
Cytochrome c -type cis / trans fatty acid isomerase (CTI) is a promising candidate for directly controlling cis / trans fatty acid isomerism in lipids-related food products like partially hydrogenated vegetable oils. In this study, to establish a sophisticated analysis platform for the CTI assay, we constructed the reversed micelle reaction system and improved the processes of methylation and GC-FID analysis of C 18:1 cis / trans monounsaturated fatty acid (MUFA) isomers. Highly stable AOT/isooctane reversed micelles were formed in the presence of periplasmic fractions of Pseudomonas putida KT2440. Using a mid-content cyanopropyl phase DB-FastFAME column, C 18:1 cis / trans -MUFAs were analyzed rapidly and resolved with resolution factors over 1.34. Based on the newly established assay, the catalytic activity of the periplasmic fraction was precisely determined, and its kinetic parameters ( Vmax and Km ) were derived as 0.021 mM·min −1 and 0.68 mM, respectively. The following results can provide practical information for investigating CTIs in the fields of food and lipid chemistry.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0308814622025808; http://dx.doi.org/10.1016/j.foodchem.2022.134618; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85140473561&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/36444044; https://linkinghub.elsevier.com/retrieve/pii/S0308814622025808; https://dx.doi.org/10.1016/j.foodchem.2022.134618
Elsevier BV
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