Yeast Cellular Stress: Impacts on Bioethanol Production

Bioethanol is the largest biotechnology product and the most dominant biofuel globally. <i>Saccharomyces cerevisiae</i> is the most favored microorganism employed for its industrial production. However, obtaining maximum yields from an ethanol fermentation remains a technical challenge,...

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Main Authors: Joshua Eardley, David J. Timson
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Fermentation
Subjects:
Online Access:https://www.mdpi.com/2311-5637/6/4/109
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author Joshua Eardley
David J. Timson
author_facet Joshua Eardley
David J. Timson
author_sort Joshua Eardley
collection DOAJ
description Bioethanol is the largest biotechnology product and the most dominant biofuel globally. <i>Saccharomyces cerevisiae</i> is the most favored microorganism employed for its industrial production. However, obtaining maximum yields from an ethanol fermentation remains a technical challenge, since cellular stresses detrimentally impact on the efficiency of yeast cell growth and metabolism. Ethanol fermentation stresses potentially include osmotic, chaotropic, oxidative, and heat stress, as well as shifts in pH. Well-developed stress responses and tolerance mechanisms make <i>S. cerevisiae</i> industrious, with bioprocessing techniques also being deployed at industrial scale for the optimization of fermentation parameters and the effective management of inhibition issues. Overlap exists between yeast responses to different forms of stress. This review outlines yeast fermentation stresses and known mechanisms conferring stress tolerance, with their further elucidation and improvement possessing the potential to improve fermentation efficiency.
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spelling doaj.art-d6cb4d8dd32842c990b21d01a18656cc2023-11-20T20:51:02ZengMDPI AGFermentation2311-56372020-11-016410910.3390/fermentation6040109Yeast Cellular Stress: Impacts on Bioethanol ProductionJoshua Eardley0David J. Timson1School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, UKSchool of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, UKBioethanol is the largest biotechnology product and the most dominant biofuel globally. <i>Saccharomyces cerevisiae</i> is the most favored microorganism employed for its industrial production. However, obtaining maximum yields from an ethanol fermentation remains a technical challenge, since cellular stresses detrimentally impact on the efficiency of yeast cell growth and metabolism. Ethanol fermentation stresses potentially include osmotic, chaotropic, oxidative, and heat stress, as well as shifts in pH. Well-developed stress responses and tolerance mechanisms make <i>S. cerevisiae</i> industrious, with bioprocessing techniques also being deployed at industrial scale for the optimization of fermentation parameters and the effective management of inhibition issues. Overlap exists between yeast responses to different forms of stress. This review outlines yeast fermentation stresses and known mechanisms conferring stress tolerance, with their further elucidation and improvement possessing the potential to improve fermentation efficiency.https://www.mdpi.com/2311-5637/6/4/109bioethanolchaotropicityfermentationbiofuel yieldcompatible solutecell stress
spellingShingle Joshua Eardley
David J. Timson
Yeast Cellular Stress: Impacts on Bioethanol Production
Fermentation
bioethanol
chaotropicity
fermentation
biofuel yield
compatible solute
cell stress
title Yeast Cellular Stress: Impacts on Bioethanol Production
title_full Yeast Cellular Stress: Impacts on Bioethanol Production
title_fullStr Yeast Cellular Stress: Impacts on Bioethanol Production
title_full_unstemmed Yeast Cellular Stress: Impacts on Bioethanol Production
title_short Yeast Cellular Stress: Impacts on Bioethanol Production
title_sort yeast cellular stress impacts on bioethanol production
topic bioethanol
chaotropicity
fermentation
biofuel yield
compatible solute
cell stress
url https://www.mdpi.com/2311-5637/6/4/109
work_keys_str_mv AT joshuaeardley yeastcellularstressimpactsonbioethanolproduction
AT davidjtimson yeastcellularstressimpactsonbioethanolproduction