Issue |
Ciência Téc. Vitiv.
Volume 30, Number 2, 2015
|
|
---|---|---|
Page(s) | 84 - 93 | |
Section | Technical Note / Nota Técnica | |
DOI | https://doi.org/10.1051/ctv/20153002084 | |
Published online | 26 January 2016 |
Amino Acids Profile of Two Galician White Grapevine Cultivars (Godello and Treixadura)
Perfis de aminoácidos de duas variedades galegas brancas de videira (Godello and Treixadura)
1
Estación de Viticultura e Enoloxía de Galicia (EVEGA-INGACAL). Ponte San Clodio s/n, 32428, Leiro – Ourense, Spain
2
Depto. Química Analítica. Universidade de Vigo. Facultad de Ciencias, As Lagoas s/n, 32004, Ourense, Spain
3
Servizo de Prevención e Análise de Riscos. Dirección Xeral de Innovación e Industrias Agrarias e Forestais. Rúa Roma 25-27, 15703, Santiago de Compostela, Spain
* corresponding author: Tel: +34988788085, e-mail: jose.manuel.miras.avalos@xunta.es
Received:
14
July
2015
Accepted:
23
October
2015
Amino acids constitute a source for yeast metabolism and, thus are of paramount importance to wine flavour and aroma. Their concentrations in must depend greatly on grape variety. The aim of this work was to describe the amino acids profile of two white grapevine varieties: ‘Godello’ and ‘Treixadura’, produced in Galicia (NW Spain). The study was carried out over two consecutive vintages (2012 and 2013). Amino acids profiles of the musts were determined using HPLC. Although the musts from the two varieties presented common major and minor amino acids, the greatest contents were observed for ‘Treixadura’. ‘Godello’ and ‘Treixadura’ varieties were arginine-accumulators, since this was the amino acid found at the highest level in the musts from the two cultivars. Amino acids contents were higher in 2012 than in 2013, likely due to climate differences between years.
Resumo
Os aminoácidos constituem uma fonte para o metabolismo das leveduras e são de suma importância para o sabor e o aroma do vinho. As suas concentrações no mosto dependem grandemente da variedade de videira. O objetivo deste trabalho foi descrever o perfil de aminoácidos de duas variedades brancas de videira: ‘Godello’ e ‘Treixadura’, produzidas na Galiza (Noroeste de Espanha). O estudo foi realizado em duas vindimas consecutivas (2012 e 2013). Os perfis de aminoácidos dos mostos foram determinados utilizando HPLC. Os mostos das duas variedades apresentaram maiores e menores aminoácidos comuns, sendo observadas maiores concentrações na ‘Treixadura’. No mosto das variedades ‘Godello’ e ‘Treixadura’ o aminoácido predominante foi a arginina. As concentrações de aminoácidos foram maiores em 2012 do que em 2013, provavelmente devido a diferenças climáticas entre anos.
Key words: amino acids / Godello / Treixadura / vintage
Palavras-chave: aminoácidos / Godello / Treixadura / colheita
© Instituto Nacional de Investigação Agrária e Veterinária, I.P. / Ex-Estação Vitivinícola Nacional 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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