publication . Conference object . 2017

Acceleration of ageing on lees in red wines by application of ultrasounds

Fresno, Juan Manuel del; Morata Barrado, Antonio Dionisio; Loira, Iris; Escott, Carlos; Cuerda, Rafael; Calderon Fernandez, Fernando; Suarez Lepe, Jose Antonio;
Open Access English
  • Published: 01 Jan 2017
  • Publisher: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
  • Country: Spain
Abstract
A transfer of parietal polysaccharides and mannoproteins is produced during aging on lees [1]. This transfer of compounds to wine is carried out after cell death. It comes to breakdown of polysaccharides from cell wall (yeast autolysis). This technique increases the density in wines [2] and gives more body and structure. Interactions between yeast polysaccharides and wine tannins will result in decrease of tannic perception (decrease of astringency). Increase of varietal characteristics is produced. The main disadvantage of the ageing on lees is the time that the process requires. Usually, nine months are necessary at least for obtaining a noticeable effect in w...
Subjects
Medical Subject Headings: food and beveragesdigestive, oral, and skin physiology
free text keywords: Ciencia y Tecnología de Alimentos
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Conference object . 2017
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