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Updated: Nov 14, 2025
14:53
Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol
Published on: October 24, 2016
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Complex yeast-bacteria interactions affect the yield of industrial ethanol fermentation
Felipe Senne de Oliveira Lino1, Djordje Bajic2,3, Jean Celestin Charles Vila2,3
1The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kongens Lyngby, Denmark.
Nature Communications
|March 9, 2021
Summary
This study reveals that beneficial bacteria like Lactobacillus amylovorus can enhance sugarcane ethanol fermentation by nearly 3%. Higher-order microbial interactions are key to optimizing ethanol yield, balancing negative pairwise effects.
Area of Science:
- Microbiology
- Biotechnology
- Metabolic Engineering
Background:
- Sugarcane ethanol fermentation involves Saccharomyces cerevisiae and various bacteria.
- Understanding microbial interactions is crucial for optimizing industrial processes.
Purpose of the Study:
- To dissect microbial interactions in sugarcane ethanol fermentation.
- To identify specific bacterial contributions to fermentation efficiency.
Main Methods:
- Combinatorial reconstitution of microbial communities.
- Functional landscape analysis.
- Flux balance analysis and laboratory experiments.
Main Results:
- Higher-order interactions positively influence ethanol yield.
- Lactobacillus amylovorus enhances yeast growth and ethanol production.
- Cross-feeding of acetaldehyde by L. amylovorus was identified as a key mechanism.
Conclusions:
- Lactobacillus amylovorus is a beneficial bacterium for sugarcane ethanol fermentation.
- Optimizing microbial communities can improve fermentation yields by up to 3%.
- This research underscores the importance of studying microbial consortia for biotechnological applications.
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