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How do fuel ethanol yeasts and contaminating lactic acid bacteria respond toward lignocellulosic-derived inhibitors?

Grant number: 18/17172-2
Support Opportunities:Regular Research Grants
Duration: February 01, 2019 - July 31, 2021
Field of knowledge:Agronomical Sciences - Food Science and Technology - Food Engineering
Principal Investigator:Thiago Olitta Basso
Grantee:Thiago Olitta Basso
Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated researchers:Ricardo Pinheiro de Souza Oliveira
Associated grant(s):19/08845-6 - Engineering sucrose uptake and phosphorolysis in Escherichia coli, AP.R SPRINT


Production of biofuels from lignocellulosic (LC) residues should be fuelling the energy matrix in the near future. Yeasts will play an important role as platform microorganisms for the conversion processes of LC-derived sugars into, for instance, fuel ethanol but also other advanced fuels and chemicals. Fermentation of LC hydrolysates poses many scientific and technological challenges. For example, besides the problem of fermenting pentose sugars, pretreatment processes generate various yeast growth inhibitors (furan-derivatives, phenolics and organic acids), which reduce the efficiency of fermentation. In this context, the present research proposal aims to investigate the effect of LC inhibitors in fuel ethanol yeasts, as well as in contaminating lactic acid bacteria, that normally are present in industrial fermentation processes. This will be accomplished by an in-depth physiological characterization of yeast strains under the presence of inhibitory compounds encountered during industrial fermentation of lignocellulosic-derived feedstock. Complementary to the physiological characterization, yeast strain improvement will be attempted by evolutionary engineering (EE). EE strategies will be attempted using a small-scale sequential batch fermentation setup and/or prolonged chemostat cultivations. Ultimately, we aim to understand how strains of yeasts and contaminating lactic acid bacteria respond to LC-inhibitory compounds and, possible to obtain yeast strains more tolerant toward these compounds, using evolutionary engineering. (AU)

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Scientific publications (10)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ALDER-RANGEL, ALENE; IDNURM, ALEXANDER; BRAND, ALEXANDRA C.; BROWN, ALISTAIR J. P.; GORBUSHINA, ANNA; KELLIHER, CHRISTINA M.; CAMPOS, CLAUDIA B.; LEVIN, DAVID E.; BELL-PEDERSEN, DEBORAH; DADACHOVA, EKATERINA; et al. The Third International Symposium on Fungal Stress - ISFUS. FUNGAL BIOLOGY, v. 124, n. 5, p. 235-252, . (15/24305-0, 16/11386-5, 18/17172-2, 17/22669-0, 13/50518-6, 18/20571-6, 10/06374-1, 16/14542-8, 14/01229-4)
ELIODORIO, KEVY PONTES; CUNHA, GABRIEL CAETANO DE GOIS E.; WHITE, BRIANNA A.; PATEL, DEMISHA H. M.; ZHANG, FANGYI; HETTEMA, EWALD H.; BASSO, THIAGO OLITTA; GOMBERT, ANDREAS KAROLY; RAGHAVENDRAN, VIJAYENDRAN. Blocking Mitophagy Does Not Significantly Improve Fuel Ethanol Production in Bioethanol Yeast Saccharomyces cerevisiae. Applied and Environmental Microbiology, v. 88, n. 5, p. 12-pg., . (17/08464-7, 19/08393-8, 18/17172-2)
BERMEJO, PAMELA MAGALI; BADINO, ALBERTO; ZAMBERLAN, LUCIANO; RAGHAVENDRAN, VIJAYENDRAN; BASSO, THIAGO OLITTA; GOMBERT, ANDREAS KAROLY. Ethanol yield calculations in biorefineries COMMENT. FEMS Yeast Research, v. 21, n. 8, p. 6-pg., . (18/17172-2, 18/11405-5)
PRADO, CLEITON D.; MANDRUJANO, GUSTAVO P. L.; SOUZA, JONAS. P.; SGOBBI, FLAVIA B.; NOVAES, HOSANA R.; DA SILVA, JOAO P. M. O.; ALVES, MATEUS H. R.; ELIODORIO, KEVY P.; CUNHA, GABRIEL C. G.; GIUDICI, REINALDO; et al. Physiological characterization of a new thermotolerant yeast strain isolated during Brazilian ethanol production, and its application in high-temperature fermentation. BIOTECHNOLOGY FOR BIOFUELS, v. 13, n. 1, . (16/10130-7, 18/17172-2, 19/08393-8, 18/20697-0)
GIACON, THAMIRIS GUERRA; DE GOIS E CUNHA, GABRIEL CAETANO; ELIODORIO, KEVY PONTES; DE SOUZA OLIVEIRA, RICARDO PINHEIRO; BASSO, THIAGO OLITTA. Homo- and heterofermentative lactobacilli are distinctly affected by furanic compounds. Biotechnology Letters, v. 44, n. 12, p. 15-pg., . (19/13826-0, 18/17172-2)
COLA, PRISCILA; PROCOPIO, DIELLE PIEROTTI; ALVES, ADRIANA TABOSA DE CASTRO; CARNEVALLI, LUCIANA REBELO; SAMPAIO, ICARO VIANA; DA COSTA, BRUNO LABATE VALE; BASSO, THIAGO OLITTA. Differential effects of major inhibitory compounds from sugarcane-based lignocellulosic hydrolysates on the physiology of yeast strains and lactic acid bacteria. Biotechnology Letters, v. 42, n. 4, p. 571-582, . (18/01759-4, 15/50612-8, 18/17172-2)
VALE DA COSTA, BRUNO LABATE; RAGHAVENDRAN, VIJAYENDRAN; MERCIER FRANCO, LUIS FERNANDO; CHAVES FILHO, ADRIANO DE BRITTO; YOSHINAGA, MARCOS YUKIO; MIYAMOTO, SAYURI; BASSO, THIAGO OLITTA; GOMBERT, ANDREAS KAROLY. Forever panting and forever growing: physiology of Saccharomyces cerevisiae at extremely low oxygen availability in the absence of ergosterol and unsaturated fatty acids. FEMS Yeast Research, v. 19, n. 6, . (15/14109-0, 18/17172-2)
GRACA, CATIA A. L.; DALLE LUCCA, BEATRIZ ARNAUT; COLA, PRISCILA; BASSO, THIAGO O.; TEIXEIRA, ANTONIO CARLOS S. C.. Photodegradation of Enrofloxacin by the Photo-Fenton-Like Reaction Using UVA-Irradiated Iron(III)-Tartrate as a Source of Iron(II). JOURNAL OF ENVIRONMENTAL ENGINEERING, v. 146, n. 12, . (18/17172-2, 13/50218-2)
WALKER, GRAEME M.; BASSO, THIAGO O.. Mitigating stress in industrial yeasts. FUNGAL BIOLOGY, v. 124, n. 5, p. 387-397, . (18/17172-2, 18/20571-6)
ELIODORIO, KEVY PONTES; DE GOIS E CUNHAA, GABRIEL CAETANO; MUELLER, CAROLINE; LUCARONI, ANA CAROLINA; GIUDICI, REINALDO; WALKER, GRAEME MAXWELL; ALVES, SERGIO LUIZ, JR.; BASSO, THIAGO OLITTA; GADD, GM; SARIASLANI, S. Advances in yeast alcoholic fermentations for the production of bioethanol, beer and wine. ADVANCES IN APPLIED MICROBIOLOGY, VOL 109, v. 109, p. 59-pg., . (15/50684-9, 19/08393-8, 18/17172-2)

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