Further insights into the floral character of Touriga Nacional wines

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

de Pinho, PG (Autor) Outra; Falque, E (Autor) Outra; Castro, M (Autor) Outra; Oliveira e Silva, HOE (Autor) Outra; Machado, B (Autor) Outra; Ferreira, ACS (Autor) Outra

Revista

Título: Journal of Food Science

Vol. 72

Páginas: S396-S401

ISSN: 0022-1147

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 15 Citações

Scopus - 24 Citações

Outras Informações

ID Authenticus: P-004-8GN

DOI: 10.1111/j.1750-3841.2007.00405.x

Abstract (EN): Higher-quality Touriga Nacional, (TN) wines are characterized by a fruity-citric aroma described as sweet and fresh citrus evoking the bergamot fruit (Citrus bergamia). In fact, "bergamot-like" descriptor is currently employed to rate higher quality TN wines. The aim of this work was to identify among volatile compounds present in bergamot fruit extracts (mainly terpenes) which of them contributes the most to-the bergamot overall perception, and relate these data with the volatile composition of TN wines. The identification of the most important descriptors was done by sensory analysis. Among 18 descriptors 3 were selected: bergamot-like aroma, orange like, and violet. A GCO of atypical TN wine extract allows the identification, of 3 related odorant zone ZO1, Z02, and Z03 related with bergamot-like aroma. Using AEDA, ZO2 was confirmed to be one of the most important odorant zones. Using AEDA the presence of linalool and linalyl acetate was confirmed. A similarity test was performed with anon-TN wine added with linalool, and linalyl acetate alone or in combinations. The highest similarity value was observed when, linalool (SV = 5.9) was added. In fact, results obtained from the analysis of several red wines from different varieties show that terpenols are present in higher amounts in wines coming from TN variety, which proves that these compounds can be the clue to the varietal aroma of TN wines.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6