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Updated: Oct 1, 2025
10:10
Genetic Engineering of an Unconventional Yeast for Renewable Biofuel and Biochemical Production
Published on: September 20, 2016
14.4K
[Production of fatty acids by engineered Ogataea polymorpha]
Dao Feng1,2, Jiaoqi Gao2, Zhiwei Gong1
1School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430080, Hubei, China.
Summary
This study engineered Ogataea polymorpha yeast to overproduce fatty acids (FA). Optimized fermentation achieved 18.0 g/L FA, demonstrating its potential as a bio-manufacturing cell factory.
Area of Science:
- Biotechnology
- Metabolic Engineering
- Industrial Microbiology
Background:
- Fatty acids (FA) are crucial precursors for cosmetics, personal care, lubricants, and biofuels.
- Ogataea polymorpha is a robust methylotrophic yeast with desirable traits for bio-manufacturing, including thermal tolerance and broad substrate utilization.
Purpose of the Study:
- To engineer O. polymorpha for enhanced fatty acid overproduction.
- To optimize fermentation conditions for maximizing FA yield.
Main Methods:
- Genetic engineering of O. polymorpha's fatty acid metabolism.
- Optimization of shake-flask fermentation parameters (temperature, pH, C/N ratio, inoculum density).
- Fed-batch fermentation with dissolved oxygen (DO) control and optimized feeding strategy.
Main Results:
- Engineered O. polymorpha produced 1.86 g/L FA in optimized shake flasks.
- Fed-batch fermentation with DO control and a C/N ratio of 120 achieved a titer of 18.0 g/L FA.
Conclusions:
- O. polymorpha can be effectively engineered for high-level fatty acid production.
- Optimized fed-batch fermentation strategies significantly enhance FA titers, showcasing O. polymorpha as a promising cell factory for FA bio-production.
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