Skip to main content
Log in

Reverse metabolic engineering in lager yeast: impact of the NADH/NAD+ ratio on acetaldehyde production during the brewing process

  • Genomics, transcriptomics, proteomics
  • Published:
Applied Microbiology and Biotechnology Aims and scope Submit manuscript

Abstract

Acetaldehyde is synthesized by yeast during the main fermentation period of beer production, which causes an unpleasant off-flavor. Therefore, there has been extensive effort toward reducing acetaldehyde to obtain a beer product with better flavor and anti-staling ability. In this study, we discovered that acetaldehyde production in beer brewing is closely related with the intracellular NADH equivalent regulated by the citric acid cycle. However, there was no significant relationship between acetaldehyde production and amino acid metabolism. A reverse engineering strategy to increase the intracellular NADH/NAD+ ratio reduced the final acetaldehyde production level, and vice versa. This work offers new insight into acetaldehyde metabolism and further provides efficient strategies for reducing acetaldehyde production by the regulating the intracellular NADH/NAD+ ratio through cofactor engineering.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

References

Download references

Acknowledgements

This study was financially supported by the National Science Foundation (No. 31571942, No. 31771963, No. 31601558), Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), Program of Introducing Talents of Discipline to Universities (No. 111-2-06), Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX18_1790), and the Fundamental Research Funds for the Central Universities (JUSRP51306A, JUSRP51402A, JUDCF13008).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Qi Li.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

ESM 1

(PDF 123 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Xu, X., Wang, J., Bao, M. et al. Reverse metabolic engineering in lager yeast: impact of the NADH/NAD+ ratio on acetaldehyde production during the brewing process. Appl Microbiol Biotechnol 103, 869–880 (2019). https://doi.org/10.1007/s00253-018-9517-0

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00253-018-9517-0

Keywords

Navigation