Related Experiment Video
Updated: Jun 25, 2026

The Terroir Concept Interpreted through Grape Berry Metabolomics and Transcriptomics
Published on: October 5, 2016
Aroma potential of two bairrada white grape varieties: Maria Gomes and Bical
S Rocha1, P Coutinho, A Barros
1Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal, and Estação Vitivinícola da Bairrada, Apartado 7, 3781 Anadia Codex, Portugal.
Abstract:
Maria Gomes and Bical are the main white grape varieties in Portuguese Bairrada Appellation, which represent 80% and 15%, respectively, of white vineyard. To estimate their aroma potentialities, free and potential volatile components from the musts were examined. The free volatile components were extracted using a liquid-liquid continuous method and were analyzed by gas chromatography-mass spectrometry. The potential volatile compounds were determined after elimination of the free components by heat and enzymatic treatments. Principal component analysis was used to establish relations between the compounds and the varieties and also the form (free or in potential). Maria Gomes has 11.5 mg/L volatile compounds, of which 33% are in free form; Bical has 4.4 mg/L volatile compounds, of which 46% are in free form. A total of 59 compounds was identified and quantified. In Maria Gomes, the sum of the terpenoids is within the perception limits for hotrienol (0.21 mg/L) and linalool (0.20 mg/L). In Bical, benzyl alcohol and phenylethylethanol represent 20% of the volatile compounds. Considering that the volatile composition pattern of Maria Gomes and Bical varieties are different, wine-making technologies should be developed specifically for each variety.
More Related Videos
05:29Profiling Volatile Compounds in Blackcurrant Fruit using Headspace Solid-Phase Microextraction Coupled to Gas Chromatography-Mass Spectrometry
Published on: June 9, 2021
07:34Profiling the Bacterial Community of Fermenting Traminette Grapes during Wine Production using Metagenomic Amplicon Sequencing
Published on: December 1, 2023
Related Concept Videos
Gustation
Olfaction
The olfactory receptors are embedded in the cilia of the...
Incomplete Dominance
Aromatic Compounds: Overview
In 1825, Faraday isolated benzene...
Taste Buds and Receptors
Microbes in Beverage Production