Articles producció científica> Bioquímica i Biotecnologia

Influence of pH on Oenococcus oeni metabolism: Can the slowdown of citrate consumption improve its acid tolerance?

  • Identification data

    Identifier: imarina:9351832
  • Authors:

    Eicher C
    Tran T
    Munier E
    Coulon J
    Favier M
    Alexandre H
    Reguant C
    Grandvalet C
  • Others:

    Author, as appears in the article.: Eicher C; Tran T; Munier E; Coulon J; Favier M; Alexandre H; Reguant C; Grandvalet C
    Department: Bioquímica i Biotecnologia
    URV's Author/s: Reguant Miranda, Cristina
    Keywords: Wine - kombucha Oenococcus oeni Metabolism Metabolic engineering Citrate
    Abstract: Oenococcus oeni is the lactic acid bacteria most suited to carry out malolactic fermentation in wine, converting L-malic acid into L-lactic acid and carbon dioxide, thereby deacidifying wines. Indeed, wine is a harsh environment for microbial growth, partly because of its low pH. By metabolizing citrate, O. oeni maintains its homeostasis under acid conditions. Indeed, citrate consumption activates the proton motive force, helps to maintain intracellular pH, and enhances bacterial growth when it is co-metabolized with sugars. In addition, citrate metabolism is responsible for diacetyl production, an aromatic compound which bestows a buttery character to wine. However, an inhibitory effect of citrate on O. oeni growth at low pH has been highlighted in recent years. In order to understand how citrate metabolism can be linked to the acid tolerance of this bacterium, consumption of citrate was investigated in eleven O. oeni strains. In addition, malate and sugar consumptions were also monitored, as they can be impacted by citrate metabolism. This experiment highlighted the huge diversity of metabolisms between strains depending on their origin. It also showed the capacity of O. oeni to de novo metabolize certain end-products such as L-lactate and mannitol, a phenomenon never before demonstrated. It also enabled drawing hypotheses concerning the two positive effects that the slowing down of citrate metabolism could have on biomass production and malolactic fermentation occurring under low pH conditions.
    Thematic Areas: Zootecnia / recursos pesqueiros Saúde coletiva Química Odontología Nutrição Medicina veterinaria Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar Food science & technology Food science Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Educação Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Biotecnología Biodiversidade Astronomia / física Administração pública e de empresas, ciências contábeis e turismo
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: cristina.reguant@urv.cat
    Author identifier: 0000-0002-5036-1408
    Record's date: 2024-03-09
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S0963996924000978
    Papper original source: Food Research International. 179 114027-
    APA: Eicher C; Tran T; Munier E; Coulon J; Favier M; Alexandre H; Reguant C; Grandvalet C (2024). Influence of pH on Oenococcus oeni metabolism: Can the slowdown of citrate consumption improve its acid tolerance?. Food Research International, 179(), 114027-. DOI: 10.1016/j.foodres.2024.114027
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1016/j.foodres.2024.114027
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2024
    Publication Type: Journal Publications
  • Keywords:

    Food Science,Food Science & Technology
    Wine - kombucha
    Oenococcus oeni
    Metabolism
    Metabolic engineering
    Citrate
    Zootecnia / recursos pesqueiros
    Saúde coletiva
    Química
    Odontología
    Nutrição
    Medicina veterinaria
    Medicina ii
    Medicina i
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Food science & technology
    Food science
    Farmacia
    Ensino
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Educação
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Biotecnología
    Biodiversidade
    Astronomia / física
    Administração pública e de empresas, ciências contábeis e turismo
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