Original Articles
Vol. 2 (2023): Regular Issue
https://doi.org/10.4081/ws.5795

Effects of malolactic fermentation on colour stability and phenolic composition of Petit Verdot red wines

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Received: 3 February 2016
Published: 30 May 2023
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Polyphenols, Colour, Malolactic fermentation, Petit Verdot

Authors

Pedro Miguel Izquierdo-Cañas
pmizquierdo@jccm.es
Instituto de la Vid y el Vino de Castilla- La Mancha-IRIAF, Tomelloso; Parque Científico-Tecnológico de Castilla-La Mancha, Albacete, Spain.
Esteban García-Romero
Instituto de la Vid y el Vino de Castilla- La Mancha-IRIAF, Tomelloso, Spain.
Adela Mena-Morales
Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha, Ciudad Real, Spain.
Sergio Gómez-Alonso
Parque Científico-Tecnológico de Castilla-La Mancha, Albacete; Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha, Ciudad Real, Spain.
In the present work we evaluate the effects of malolactic fermentation (MLF) on the colour parameters and polyphenolic composition of Petit Verdot red wines. MLF caused a significant decrease in colour intensity in wines, approximately 9%. In line with that, the results showed a decrease in the concentration of anthocyanins (acylated and non-acylated), but an increase of the pyranothocyannins concentration. MLF did not produce important variations on the content of hydroxycinnamic acids derivatives, stilbenes and flavonols. Regarding flavan-3-ols, MLF caused a decrease in monomers, total flavan-3-ols and percentage of galloylation, and an increase on the percentage of prodelphinidins. However, no effect over mean degree of polymerisation was observed. Thus, it is unlikely that these changes may affect the acceptability of wines by consumers.

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Effects of malolactic fermentation on colour stability and phenolic composition of Petit Verdot red wines. (2023). Wine Studies, 2. https://doi.org/10.4081/ws.5795
Copyright (c) 2016 Pedro Miguel Izquierdo-Cañas, Esteban García-Romero, Adela Mena-Morales, Sergio Gómez-Alonso Creative Commons License

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