Elaboration of Tempranillo wines at two different pHs. Influence on biogenic amine contents

  1. López, R. 1
  2. Tenorio, C. 2
  3. Gutiérrez, A.R. 2
  4. Garde-Cerdán, T. 1
  5. Garijo, P. 1
  6. González-Arenzana, L. 1
  7. López-Alfaro, I. 1
  8. Santamaría, P. 1
  1. 1 Instituto de Ciencias de la Vid y del Vino
    info

    Instituto de Ciencias de la Vid y del Vino

    Logroño, España

    ROR https://ror.org/01rm2sw78

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
Food Control

ISSN: 0956-7135

Any de publicació: 2012

Volum: 25

Número: 2

Pàgines: 583-590

Tipus: Article

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DOI: 10.1016/J.FOODCONT.2011.11.029 SCOPUS: 2-s2.0-84055178462 WoS: WOS:000300740000023 GOOGLE SCHOLAR

Altres publicacions en: Food Control

Repositori institucional: lockAccés obert Editor

Objectius de Desenvolupament Sostenible

Resum

The aim of this work was to study the effect of pH on biogenic amine formation during the elaboration and conservation (7 months) of Tempranillo wines. Grapes at two pHs (3.4 and 3.7) were vinified to achieve this purpose. After alcoholic fermentation the wines were either inoculated with a commercial malolactic starter or not inoculated. Identification and clonal distribution of lactic acid bacteria and amino acid concentration were determined in an attempt to explain the biogenic amine generation. The results showed that the pH of the must influenced the clonal distribution of the Oenococcus oeni strains which conducted the malolactic fermentation and also the concentration of amino acids in the wines after alcoholic fermentation. These aspects could account for the higher biogenic amine formation in wines with the lowest pH during malolactic fermentation. In these wines, inoculation with a malolactic starter was favourable since it produced a lower biogenic amine concentration after malolactic fermentation. Furthermore, the pH also influenced the concentration of amino acids after malolactic fermentation and the lactic acid bacteria distribution during the conservation of the wines. These aspects allow explaining the greater formation of histamine, tyramine and putrescine in the wines with the lowest pH vinified via lactic acid bacteria inoculation after seven months of conservation. © 2011 Elsevier Ltd.