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Contents of 3-alkyl-2-methoxypyrazines in musts and wines from Vitis vinifera variety Cabernet Sauvignon: influence of irrigation and plantation density

Authors

  • Cristina Sala,

    Corresponding author
    1. Departament de Química Analítica i Química Orgànica, Unitat d'Enologia del CeRTA, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, Avda Ramón y Cajal 70, E-43005 Tarragona, Spain
    • Departament de Química Analítica i Química Organica, Unitat d'Enologia del CeRTA, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, Avda Ramón y Cajal 70, E-43005 Tarragona, Spain
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  • Olga Busto,

    1. Departament de Química Analítica i Química Orgànica, Unitat d'Enologia del CeRTA, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, Avda Ramón y Cajal 70, E-43005 Tarragona, Spain
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  • Josep Guasch,

    1. Departament de Química Analítica i Química Orgànica, Unitat d'Enologia del CeRTA, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, Avda Ramón y Cajal 70, E-43005 Tarragona, Spain
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  • Fernando Zamora

    1. Departament de Bioquímica i Biotecnologia, Unitat d'Enologia del CeRTA, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, Avda Ramón y Cajal 70, E-43005 Tarragona, Spain
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Abstract

The influence of irrigation and plantation density on the methoxypyrazine content in musts and wines has been studied. Samples were monitored throughout grape ripening and wine-making. 3-Isobutyl-2-methoxypyrazine, 3-sec-butyl-2-methoxypyrazine and 3-isopropyl-2-methoxypyrazine were identified and quantified. Samples from irrigated vines had significantly higher average contents of 3-isobutyl-2-methoxypyrazine than samples from non-irrigated plants. Average levels of this compound were also higher in samples from vines with the higher plantation density. Copyright © 2005 Society of Chemical Industry

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