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The Impact of the Malolactic Fermentation in the Volatile Composition of Trinca...

Torres, Mª Pietra; Cabrita, M.J.; Gomes da Silva, M.D.R.; Palma, Vera; Costa Freitas, A.M.

Use of commercial starters for malolactic fermentation (MLF) is a common practice, and outcomes of this procedure are very relevant for wine producers because aroma attributes might change according to the strain used. MLF was carried out in the Trincadeira wine variety in three batches: spontaneously and with inoculation of two different commercial starters. Wine extracts before and after MLF were obtained thr...


Phenolic Acids, Phenolic Aldehydes and Furanic Derivatives in Oak Chips: Americ...

Cabrita, M.J.; Barrocas Dias, C.; Costa Freitas, A.M.

Phenolic acids (gallic, vanillic, syringic and ellagic acids), phenolic aldehydes (vanillin, syringaldehyde, coniferaldehyde and sinapaldehyde) and furanic derivatives (furfural, 5-methylfurfural and 5-hydroxymethylfurfural) were quantified in commercial American and French oak chips. Chips with different sizes and toast degrees were used. Compounds were extracted directly from the wood samples in order to dete...


Sensorial analysis and electronic aroma detection to compare olive oils

Vaz-Freire, L.; Cabrita, M.J.; Gomes da Silva, M.D.R.; Costa Freitas, A.M.

Sensorial analysis and electronic aroma detection to compare olive oils produced by different extraction methods. A sensorial analysis and an aroma analysis by electronic sensory devices were used to compare olive oils produced according to two different extraction methods. The extraction methods compared were the press system and two phase decanter. Samples were taken from the harvests of 2002-2004 and the oli...


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