Abstract
Objective
To produce 10-ketostearic acid from oleic acid.
Results
Oleic acid was converted to 10-ketostearic acid by a recombinant Corynebacterium glutamicum ATCC 13032 expressing oleate hydratase from Stenotrophomonas maltophilia and a secondary alcohol dehydrogenase from Micrococcus luteus under the control of a synthetic constitutive promoter. Optimal conditions for 10-ketostearic acid production were pH 7.5 and 30 °C with 5 g cells l−1 and 2.5 g oleic acid l−1. Under these conditions, the cells produced 1.96 g 10-ketostearic acid l−1 from oleic acid in 6 h, with a conversion yield of 78 % (w) and a maximum volumetric productivity of 1.67 g l−1 h−1.
Conclusion
This is the first report of 10-ketostearic acid production using a recombinant C. glutamicum.
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Acknowledgments
This work was supported by the MOTIE/KEIT R&D Program (10044604, Bioproduction of long-chain dicarboxylic acids from fatty acids and lipids).
Supporting information
Supplementary Table 1—Bacterial strains, plasmids and oligonucleotides used in this study.
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Byeonghun Lee and Saebom Lee have contributed equally to this work.
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Lee, B., Lee, S., Kim, H. et al. Biotransformation of oleic acid into 10-ketostearic acid by recombinant Corynebacterium glutamicum-based biocatalyst. Biotechnol Lett 37, 1101–1106 (2015). https://doi.org/10.1007/s10529-015-1775-7
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DOI: https://doi.org/10.1007/s10529-015-1775-7