Studying Zymomonas mobilis Growth in Different Conditions
Author Information
Author(s): Yang Shihui, Tschaplinski Timothy J, Engle Nancy L, Carroll Sue L, Martin Stanton L, Davison Brian H, Palumbo Anthony V, Rodriguez Miguel Jr, Brown Steven D
Primary Institution: Biosciences Division and BioEnergy Science Center, Oak Ridge National Laboratory
Hypothesis
How does Zymomonas mobilis respond to aerobic versus anaerobic fermentation conditions?
Conclusion
High oxygen concentrations during Z. mobilis fermentations negatively influence fermentation performance.
Supporting Evidence
- Z. mobilis grows faster and consumes glucose more rapidly under anaerobic conditions.
- Under aerobic conditions, Z. mobilis produces more byproducts like acetate and lactate.
- Significant differences in gene expression were observed in stationary phase under different oxygen levels.
Takeaway
Zymomonas mobilis grows better and makes more ethanol without oxygen, but when there's too much oxygen, it makes less ethanol and more other stuff.
Methodology
The study used microarray analysis and various chromatography techniques to analyze the growth and metabolite production of Z. mobilis under different oxygen conditions.
Limitations
The study's findings may not fully represent Z. mobilis behavior in industrial settings due to the controlled conditions used.
Statistical Information
P-Value
0.009
Statistical Significance
p<0.1
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website