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A composição volátil de aparas de diferentes espécies botânicas com interesse e...
Soares, Bruno; Martins, Nuno; Garcia, Raquel; Gomes da Silva, Marco; Cabrita, Maria JoaoO estudo da composição volátil de diferentes espécies botânicas com interesse enológico pode ser abordado sob diferentes perspectivas as quais se estendem desde a análise das madeiras e/ou avaliação da composição volátil de soluções hidroalcoólicas contendo as madeiras em estudo e finalmente ao estudo de vinhos fermentados e/ou maturados em contacto com essas madeiras. A avaliação sensorial quer das soluções hi...
Olive oil composition: volatiles compound
Gomes da Silva, Marco; Costa Freitas, Ana Maria; Cabrita, Maria Joao; Garcia, Raquelvolatile composition of olive oils
Multivariate statistical approaches for wine classification based on low molecu...
Cabrita, Maria Joao; Aires de Sousa, Joao; Gomes da Silva, Marco; Rei, Fernando; Costa Freitas, Ana MariaBackground and Aims: Phenolic compounds influence the colour, flavour and astringency of wines. These compounds are extracted into the wine during grape fermentation and maceration and thus the winemaking process is the main factor affecting the phenolic content of wines, besides the varietal factor. In this work, we aimed to apply self organizing maps to investigate the relationships between the profile of phe...
Sampling and sample preparation techniques for the determination of volatile co...
Costa Freitas, Ana Maria; Gomes da Silva, Marco; Cabrita, Maria JoaoChemistry of Volatile Components of Grape Juice, Wine, and Alcoholic Beverages Extraction Techniques Solvent-Based Sample Preparation Techniques LLE Enhancement of Solvent Extraction Power SPE Sorptive Sample Preparation Techniques Headspace Purge and Trap SPME SBSE Preparative HPLC and SFE as a Multidimensional Preparation Tool for Sample Fractionation
Gas chromatography in analysis of compounds released from wood into wine
Cabrita, Maria João; Garcia, Raquel; Martins, Nuno; Gomes da Silva, Marco; Costa Freitas, Ana MariaWood has been used in alcoholic beverages for centuries, mainly as material for containers used for alcoholic beverages aging. Recently OIV (Organisation International de la Vigne et du Vin) approved the use of chips (Resolution oeno 3/2005) and staves as alternatives for barrels. These practices are being rapidly spread among winemakers. The increased used of these alternatives are mainly related to low invest...
Volatile compounds from oak, cherry, chestnut and acacia chips: influence of to...
Martins, Nuno; Garcia, Raquel; Gomes da Silva, Marco; Cabrita, Maria JoaoIn the present study, the volatile composition of wood chips from several botanical species potentially relevant for oenological purposes, namely acacia (unknown specie), chestnut (Castanea sativa), cherry (Prunus cerasus) and oak (Quercus robur) was studied by GC/MS. In order to evaluate the effect of the toasting process on volatile compounds contents we have extended our study to wood chips from the botanica...
Comprehensive Two-Dimensional Gas Chromatography for Fingerprint Pattern Recogn...
Costa Freitas, Ana Maria; Gomes da Silva, Marco; Vaz-Freire, Luis TorresO artigo aplica a Cromatografia multidimensional para a caracterixzação de voláteis em azeites de variedades portuguesas, aplicando um software de reconhecimento de imagem Image J
The use of Headspace Solid Phase Microextraction for Characterization of Volati...
Costa Freitas, Ana Maria; Gomes da Silva, MarcoAplicação da técnica de SPME na análise de compostos voláteis em azeites
Different multidimensional chromatographic approaches applied to the study of W...
Costa Freitas, Ana Maria; Gomes da Silva, Marco; Relva, Angela; Fernandes, LuzDifferent multidimensional analyical techniques applied to the study of malolactic fermentation impact on wine final quality
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