ArticleApplied microbiology and biotechnology2025
Engineered S. cerevisiae construction for high-gravity ethanol production and targeted metabolomics.
Article in Applied microbiology and biotechnology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Dynamic, model-guided intensification of fuel ethanol production in yeast: proteome constraints, CRISPR rewiring, and high-gravity fermentations.Archives of microbiology · 2026Review
- Predictive modeling and network analysis uncover novel regulators of multi-stress tolerance in Saccharomyces cerevisiae.BMC microbiology · 2026Article
- Integrated Fermentation Engineering Enables High-Level Leghemoglobin Production in Kluyveromyces marxianus via Metabolic Rewiring of Central Carbon Metabolism and Amino Acid Utilization.Biotechnology journal · 2026Article
- Glucosamine Yield Improvement in EngineeredFoods (Basel, Switzerland) · 2026Article
- TuningJournal of fungi (Basel, Switzerland) · 2026Article
- Yeast strain development and process intensification in high-gravity fermentation.FEMS yeast research · 2026Review
- EngineeredFoods (Basel, Switzerland) · 2025Article
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Abstract
Strong sugar tolerance and high bioethanol yield of yeast under high-gravity fermentation have caused great attention in the bioethanol industry. In this study, Clustered Regularly Interspaced Short Palindromic Repeats Cas9 (CRISPR-Cas9) technology was used to knock out S. cerevisiae GPD2, FPS1, ADH2, DLD3, ERG5, NTH1, and AMS1 to construct engineering strain S. cerevisiae GFADENA. Under high-gravity fermentation with 400 g/L of sucrose, S. cerevisiae GFADENA produced 135 g/L ethanol, which increased 17% compared with the wild-type strain. In addition, S. cerevisiae GFADENA produced 145 g/L of ethanol by simultaneous saccharification and fermentation (SSF) using 400 g/L of corn syrup with a sugar-ethanol conversion rate of 41.1%. Further, the targeted metabolomics involving energy, amino acid, and free fatty acid metabolisms were performed to unravel its molecular mechanisms. The deletion of seven genes in S. cerevisiae GFADENA caused a more significant effect on energy metabolism compared with amino acid and free fatty acid metabolisms based on the significantly different metabolites. Two metabolites α-ketoglutaric acid and fructose-1,6-bisphosphate were the most significantly different upregulation and downregulation metabolites, respectively (p < 0.05). Functions of metabolism, environmental information processing, and genetic information processing were related to sucrose tolerance enhancement and ethanol production increase in S. cerevisiae GFADENA by the regulation of significantly different metabolites. This study provided an effective pathway to increase ethanol yield and enhance sucrose tolerance in S. cerevisiae through bioengineering modification. KEY POINTS: • S. cerevisiae GFADENA with gene deletion was constructed by the CRISPR-Cas9 approach • S. cerevisiae GFADENA could produce ethanol using high-gravity fermentation condition • The ethanol yield of 145 g/L was produced using 400 g/L corn syrup by the SSF method.
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