Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/51153
Título: | Changes in the volatile composition of wine from grapes treated with Bordeaux mixture: a laboratory-scale study |
Autor(es): | Martins, V. Teixeira, A. Gerós, H. |
Palavras-chave: | Bordeaux mixture copper red wine volatile compounds wine aroma |
Data: | 2015 |
Editora: | Wiley-Blackwell |
Revista: | Australian Journal of Grape and Wine Research |
Resumo(s): | Background and Aims: We investigated the effect of the application of Bordeaux mixture in the vineyard on the copper concentration in the must, and the consequences for the volatile composition of wine.Methods and Results: Musts from grapes cv. Vinhao treated with Bordeaux mixture or with a triazole-based fungicide were prepared at a laboratory scale. Copper concentration decreased from 31.4 to 12.6 mg/L during fermentation, as determined by atomic absorption spectrometry. Increased copper concentration promoted a significant decrease in the concentration of higher alcohols, including isoamyl alcohol, and of esters of organic acids, including ethyl lactate, as determined by liquid-liquid microextraction Gas chromatography (GC)-flame ionisation detection and solid phase extraction GC-ion trap-mass spectrometry (MS) analysis. In contrast, the concentration of acetates such as ethyl acetate increased sharply, together with terpenes, namely linalool.Conclusions: The treatment of grapes in the vineyard with Bordeaux mixture shifted the aromatic composition of wine.Significance of the Study: Besides its scientific importance, the elucidation of how Bordeaux mixture affects grape and wine quality is of significant interest in oenology, especially in organic viticulture. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/51153 |
DOI: | 10.1111/ajgw.12150 |
ISSN: | 1322-7130 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito autor |
Aparece nas coleções: | DBio - Artigos/Papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Wine aroma.pdf Acesso restrito! | 191,83 kB | Adobe PDF | Ver/Abrir |