Handbook of Enology, Volume 2. Pascal Ribéreau-Gayon

Handbook of Enology, Volume 2

With assistance from Juliet Towey Vista Translations LLC, Portland, OR, USA

This edition first published 2021

Edition History 1e Wiley 2000 2e Wiley 2005

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The right of Pascal Ribéreau‐Gayon, Yves Glories, Alain Maujean and Denis Dubourdieu to be identified as the authors of this work has been asserted in accordance with law.

Originally published in France as

Traité d’oenologie Volume 2 – Chimie du Vin, Stabilisation et traitement By Pascal Ribéreau‐Gayon, Yves Glories, Alain Maujean, Denis Dubourdieu © Dunod Editeur, 2017, Malakoff

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Library of Congress Cataloging‐in‐Publication Data

Title: Handbook of enology.

Other titles: Traité d’oenologie. English

Description: Third edition / coordinator, Philippe Darriet ; translator John Towey. | Hoboken, NJ : Wiley, 2020‐2021. | Includes bibliographical references and indexes. | Contents: volume 1. The microbiology of wine and vinifications / Pascal Ribéreau‐Gayon, Denis Dubourdieu, Bernard B.Donèche and Aline A. Lonvaud – volume 2. The chemistry of wine stabilization and treatments / Pascal Ribéreau‐Gayon, Denis Dubourdieu, Yves Glories and Alain Maujean.

Subjects: LCSH: Wine and wine making–Handbooks, manuals, etc. | Wine and wine making–Microbiology–Handbooks, manuals, etc. | Wine and wine making–Chemistry–Handbooks, manuals, etc.

Classification: LCC TP548 .T7613 2020 (print) | LCC TP548 (ebook) | DDC 663/.2–dc23

LC record available at https://lccn.loc.gov/2020033294 LC ebook record available at https://lccn.loc.gov/2020033295

Cover Design: Wiley

FOREWORD

Over 70 years ago, in 1949, under the direction of Professor Jean Ribéreau‐Gayon, the first edition of Traité d'oenologie (Handbook of Enology) appeared. That publication aimed to gather scientific and technical knowledge in the main fields of science still in its early stages, originating from the works of Louis Pasteur. Later on, the book was regularly republished by integrating the most recent experimental results, especially those conducted at the Bordeaux School of Enology. In 1997, the fourth edition, published under the direction of Professor Pascal Ribéreau‐Gayon and Professors Denis Dubourdieu, Yves Glories, Aline A. Lonvaud, Bernard B. Donèche, and Alain Maujean, was completely reshaped into two volumes.

The current book, which is the seventh French edition (third in English) of the Handbook of Enology, updates and enriches the knowledge found in the two‐volume edition that first appeared 20 years ago. Subsequent editions were printed in 2004 and then in 2012. As Émile Peynaud said in Le Vin et les Jours, “…enology is at the service of wine, it is a science in movement, advancing both in its research and applications…” As an applied science, it is irrigated by knowledge from the fundamental sciences (chemistry, biochemistry, microbiology, bioengineering, psychophysics, cognitive psychology, etc.) and nourished by empirical observations. The approach used in the Handbook of Enology is thus still the same. It is about providing practitioners, winemakers, technicians, and enology students with solid knowledge and the most recent research results. This knowledge can be used to contribute to a better definition of the quality of grapes and wine, a greater understanding of chemical and microbiological parameters, with the aim of ensuring satisfactory fermentations and predicting the evolution of wines, and better mastery of wine stabilization processes. As a result, the purpose of this publication is to guide readers in their thought processes with a view to preserving and optimizing the identity and taste of wine and its aging potential. In other words, this publication was meant, as the late Professor Denis Dubourdieu wrote, to help “…obtain original products that are sufficiently complex, fine and appreciated by modern consumers…,” in a context where grape ripeness characteristics are evolving and greater attention is being placed on chemical additives.

The outline of this edition of the Handbook of Enology does not differ from the previous ones. Some of the chapters have been significantly reworked in light of recent research, while others have been changed only slightly or not at

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