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Les Nucleotides Du Vin De Champagne
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Book Synopsis Les nucléotides du vin de Champagne by : Jérôme Aussenac
Download or read book Les nucléotides du vin de Champagne written by Jérôme Aussenac and published by . This book was released on 2001 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les objectifs de cette étude étaient de développer une méthodologie permettant d'identifier les nucléotides du vin de Champagne, de connaître leur évolution pendant le vieillissement au contact des levures et d'apprécier leur importance organoleptique. Ce travail a débuté par l'étude du matériel nucléique relargué par Saccharomyces cerevisiae au cours d'une autolyse à 30ʿC dans un vin modèle (11,5% d'éthanol, pH 3). Dans ces conditions, les nucléotides issus de la dégradation de l'ARN ont été libérés dès le premier jour d'autolyse et ont été ensuite hydrolysés en leur nucléoside respectif durant les sept jours suivants. A cette occasion, trois méthodes d'élution en CLHP sur phase inverse ont été mises au point pour identifier et quantifier les nucléotides ainsi que les nucléosides. Toutefois, en raison de la complexité du vin de Champagne, d'autres procédures ont dues êtres développées : d'une part, une méthode de purification, qui a permis d'isoler la fraction nucléotidique du vin, et d'autre part, le couplage de la spectrométrie de masse (source électrospray) avec la CLHP, qui a rendu possible l'identification des nucléotides. L'application de ces techniques à des vins de Champagne (conservés au contact des levures pendant des durées variant de 0 à 14 années) a permis de démontrer que les nucléotides issus de l'autolyse des levures résultaient uniquement de la dégradation de l'ARN. Il a également été découvert que la libération dans le vin des 5'-ribonucléotides précédait celle des isomères 3'. Enfin, parmi les nucléotides identifiés dans le champagne, nous avons calculé les seuils de perception de 5'-GMP, 5'-IMP et 5'-UMP. Les résultats ont démontré que ces composés n'intervenaient pas de manière individuelle dans la modification de la flaveur du vin de Champagne car les valeurs de seuils étaient plus de vingt fois supérieures aux concentrations présentes dans le vin.
Book Synopsis Yeasts in the Production of Wine by : Patrizia Romano
Download or read book Yeasts in the Production of Wine written by Patrizia Romano and published by Springer Nature. This book was released on 2019-09-16 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is well established that certain strains of yeasts are suitable for transforming grape sugars into alcohol, while other yeast strains are not suitable for grape fermentations. Recent progress has clearly demonstrated that the sensory profile of a wine is characteristic of each vine cultivated, and the quality and technological characteristics of the final product varies considerably due to the strains which have performed and/or dominated the fermentation process. Because of their technological properties, wine yeast strains differ significantly in their fermentation performance and in their contribution to the final bouquet and quality of wine, such as useful enzymatic activities and production of secondary compounds related both to wine organoleptic quality and human health. The wine industry is greatly interested in wine yeast strains with a range of specialized properties, but as the expression of these properties differs with the type and style of wine to be made, the actual trend is in the use of selected strains, which are more appropriate to optimize grape quality. Additionally, wine quality can be influenced by the potential growth and activity of undesirable yeast species, considered spoilage yeasts, which cause sluggish and stuck fermentation and detrimental taste and aroma in the wine.
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Managing Wine Quality by : Andrew G. Reynolds
Download or read book Managing Wine Quality written by Andrew G. Reynolds and published by Woodhead Publishing. This book was released on 2021-12-03 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt: Managing Wine Quality, Volume 2: Oenology and Wine Quality, Second Edition, brings together authoritative contributions from experts across the world’s winemaking regions who cover yeasts, fermentation, enzymes, and stabilization, amongst other topics. A new chapter covers, in detail, extraction technologies and wine quality. Other sections cover the management of wine sensory quality, with new chapters covering the management of fortified wines, of Botrytized wines, and of wines produced from dried grapes. In addition, an updated section on insect taints in wine has been widened to cover all insects. With a focus on recent studies, advanced methods, and a look to future technologies, this fully updated edition is an essential reference for anyone involved in viticulture and oenology who wants to explore new methods, understand different approaches, and refine existing practices. Reviews our current understanding of yeast and fermentation management, as well as the effects of aging on wine quality Details alternatives to cork in bottle closing and the latest developments in the stabilization and clarification of wines Includes new chapters covering extraction technologies for wine quality and on managing the quality of a wide range of wine types, including fortified and Botryized wines Provides extensively expanded coverage of insect taints and their effects on wine quality
Book Synopsis Applied and Environmental Microbiology by :
Download or read book Applied and Environmental Microbiology written by and published by . This book was released on 2007 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Enology, Volume 1 by : Pascal Ribéreau-Gayon
Download or read book Handbook of Enology, Volume 1 written by Pascal Ribéreau-Gayon and published by John Wiley & Sons. This book was released on 2006-05-01 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The "Microbiology" volume of the new revised and updated Handbook of Enology focuses on the vinification process. It describes how yeasts work and how they can be influenced to achieve better results. It continues to look at the metabolism of lactic acid bacterias and of acetic acid bacterias, and again, how can they be treated to avoid disasters in the winemaking process and how to achieve optimal results. The last chapters in the book deal with the use of sulfur-dioxide, the grape and its maturation process, harvest and pre-fermentation treatment, and the basis of red, white and speciality wine making. The result is the ultimate text and reference on the science and technology of the vinification process: understanding and dealing with yeasts and bacterias involved in the transformation from grape to wine. A must for all serious students and practitioners involved in winemaking.
Book Synopsis Proceedings of the ... Australian Wine Industry Technical Conference by :
Download or read book Proceedings of the ... Australian Wine Industry Technical Conference written by and published by . This book was released on 1996 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wine Science written by Ronald S. Jackson and published by Elsevier. This book was released on 2014-05-31 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wine Science, Fourth Edition, covers the three pillars of wine science: grape culture, wine production, and sensory evaluation. It discusses grape anatomy, physiology and evolution, wine geography, wine and health, and the scientific basis of food and wine combinations. It also covers topics not found in other enology or viticulture texts, including details on cork and oak, specialized wine making procedures, and historical origins of procedures. New to this edition are expanded coverage on micro-oxidation and the cool prefermentative maceration of red grapes; the nature of the weak fixation of aromatic compounds in wine – and the significance of their release upon bottle opening; new insights into flavor modification post bottle; the shelf-life of wine as part of wine aging; and winery wastewater management. Updated topics include precision viticulture, including GPS potentialities, organic matter in soil, grapevine pests and disease, and the history of wine production technology. This book is a valuable resource for grape growers, fermentation technologists; students of enology and viticulture, enologists, and viticulturalists. New to this edition: Expanded coverage of micro-oxidation and the cool prefermentative maceration of red grapes The nature of the weak fixation of aromatic compounds in wine – and the significance of their release upon bottle opening New insights into flavor modification post bottle Shelf-life of wine as part of wine aging Winery wastewater management Updated topics including: Precision viticulture, including GPS potentialities Organic matter in soil Grapevine pests and disease History of wine production technology
Author :M. Victoria Moreno-Arribas Publisher :Springer Science & Business Media ISBN 13 :0387741186 Total Pages :729 pages Book Rating :4.3/5 (877 download)
Book Synopsis Wine Chemistry and Biochemistry by : M. Victoria Moreno-Arribas
Download or read book Wine Chemistry and Biochemistry written by M. Victoria Moreno-Arribas and published by Springer Science & Business Media. This book was released on 2008-11-06 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to describe chemical and biochemical aspects of winemaking that are currently being researched. The authors have selected the very best experts for each of the areas. The first part of the book summarizes the most important aspects of winemaking technology and microbiology. The second most extensive part deals with the different groups of compounds, how these are modified during the various steps of the production process, and how they affect the wine quality, sensorial aspects, and physiological activity, etc. The third section describes undesirable alterations of wines, including those affecting quality and food safety. Finally, the treatment of data will be considered, an aspect which has not yet been tackled in any other book on enology. In this chapter, the authors not only explain the tools available for analytical data processing, but also indicate the most appropriate treatment to apply, depending on the information required, illustrating with examples throughout the chapter from enological literature.
Download or read book Journal of Grapevine Research written by and published by . This book was released on 1976 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wine Microbiology by : Kenneth C. Fugelsang
Download or read book Wine Microbiology written by Kenneth C. Fugelsang and published by Рипол Классик. This book was released on 2007 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular Wine Microbiology by : Alfonso V. Carrascosa Santiago
Download or read book Molecular Wine Microbiology written by Alfonso V. Carrascosa Santiago and published by Academic Press. This book was released on 2011-05-23 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Wine Microbiology features rigorous scientific content written at a level comprehensible for wine professionals as well as advanced students. It includes information on production and spoilage issues, the microbial groups relevant for wine production and microbial wine safety. Microbiology has long been recognized as a key tool in studying wine production, however only recently have wine microbiology studies been addressed at a molecular level, increasing the understanding of how microbiology impacts not only the flavor quality of the wine, but also its safety. Understanding, at a molecular level, how a starter culture can impact ethanol, glycerol, volatile phenols, mannoproteins, biogenic amines or ochratoxin A of a wine are just some of the core points that must be considered in order to achieve maximium consumer acceptability while addressing safety concerns during processing and storage. While other books offer insights into the technological aspects of enology, this book is written by expert microbiologists, who explore the positive and negative impacts of gene function in the production of wine, from a microbiological point of view. Winner of the 2012 Jury Award in Enology from the International Organisation of Vine and Wine Presents the most current methods of studying the microbiology of wine Includes latest identification and typing methods, reducing identification time from days and weeks to minutes and hours Provides important knowledge about the impact of microbiological factors at the molecular level for reduction of wine spoilage and increased wine quality and safety
Book Synopsis Biology of Microorganisms on Grapes, in Must and in Wine by : Helmut König
Download or read book Biology of Microorganisms on Grapes, in Must and in Wine written by Helmut König and published by Springer. This book was released on 2017-11-01 with total page 711 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of the book begins with the description of the diversity of wine-related microorganisms, followed by an outline of their primary and energy metabolism. Subsequently, important aspects of the secondary metabolism are dealt with, since these activities have an impact on wine quality and off-flavour formation. Then chapters about stimulating and inhibitory growth factors follow. This knowledge is helpful for the growth management of different microbial species. The next chapters focus on the application of the consolidated findings of molecular biology and regulation the functioning of regulatory cellular networks, leading to a better understanding of the phenotypic behaviour of the microbes in general and especially of the starter cultures as well as of stimulatory and inhibitory cell-cell interactions during wine making. In the last part of the book, a compilation of modern methods complete the understanding of microbial processes during the conversion of must to wine.This broad range of topics about the biology of the microbes involved in the vinification process could be provided in one book only because of the input of many experts from different wine-growing countries.
Download or read book Wine Tasting written by Ronald S. Jackson and published by Academic Press. This book was released on 2016-12-22 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: From OIV-award-winning author, Ronald S. Jackson, Wine Tasting: A Professional Handbook, Third Edition, is an essential guide for any professional or serious connoisseur seeking to understand both the theory and practice of wine tasting. From techniques for assessing wine properties and quality, including physiological, psychological, and physicochemical sensory evaluation, to the latest information on the types of wine, the author guides the reader to a clear and applicable understanding of the wine tasting process. With its inclusion of illustrative data and testing technique descriptions, the book is ideal for both those who train tasters, those involved in designing wine tastings, and the connoisseur seeking to maximize their perception and appreciation of wine. Contains revised and updated coverage, notably on the physiology and neurology of taste and odor perception Includes expanded coverage of the statistical aspect of wine tasting (specific examples to show the process), qualitative wine tasting, wine language, the origins of wine quality, and food and wine combination Provides a flow chart of wine tasting steps and production procedures Presents practical details on wine storage and the problems that can occur both during and following bottle opening
Book Synopsis Grapevine Viruses: Molecular Biology, Diagnostics and Management by : Baozhong Meng
Download or read book Grapevine Viruses: Molecular Biology, Diagnostics and Management written by Baozhong Meng and published by Springer. This book was released on 2017-07-05 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: The domestication of grapes dates back five thousand years ago and has spread to nearly all continents. In recent years, grape acreage has increased dramatically in new regions, including the United States of America, Chile, Asia (China and India), and Turkey. A major limiting factor to the sustained production of premium grapes and wines is infections by viruses. The advent of powerful molecular and metagenomics technologies, such as molecular cloning and next generation sequencing, allowed the discovery of new viruses from grapes. To date, grapevine is susceptible to 64 viruses that belong to highly diverse taxonomic groups. The most damaging diseases include: (1) infectious degeneration; (2) leafroll disease complex; and (3) rugose wood complex. Recently, two new disease syndromes have been recognized: Syrah decline and red blotch. Losses due to fanleaf degeneration are estimated at $1 billion annually in France alone. Other diseases including leafroll, rugose wood, Syrah de cline and red blotch can result in total crop loss several years post-infection. This situation is further exacerbated by mixed infections with multiple viruses and other biotic as well as adverse abiotic environmental conditions, such as drought and winter damage, causing even greater destruction. The book builds upon the last handbook (written over twenty years ago) on the part of diagnostics and extensively expands its scope by inclusion of molecular biology aspects of select viruses that are widespread and economically most important. This includes most current information on the biology, transmission, genome replication, transcription, subcellular localization, as well as virus-host interactions. It also touches on several novel areas of scientific inquiry. It also contains suggested directions for future research in the field of grapevine virology.
Book Synopsis Production Wine Analysis by : Bruce W. Zoecklein
Download or read book Production Wine Analysis written by Bruce W. Zoecklein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text is designed to acquaint the reader with the commonly used procedures of juice and wine analysis as they are generally practiced in the industry, and as they are taught in the Department of Enology at California State University, Fresno. It is assumed that the reader has a basic preparation in the fields of chemistry and microbiology. In developing material for this text, the authors have emphasized analyses as they would be carried out in a production laboratory. Realizing that different laboratories have different analytical capabilities, personnel as well as equip ment, we have in many instances provided several different approaches to the same analysis. Throughout this book we have attempted to give special attention to practical considerations and the importance of these analyses in the total spectrum of winery operations. We hope the book's format will satisfy the inter ests oflaboratory personnel as well as winemakers. The process of making wine involves a series of concerns for the winemaker and staff of a winery. The first concerns are viticultural. Upon arrival of the fruit, its quality is assessed, grapes are processed and fermentation is begun. Almost immediately, and in many instances simultaneously, chemical and microbiological stability of the young and/or aging wine become important. Finally, problems do occur on occasion, and a number of what may be consid ered remedial techniques can be employed to produce an acceptable product.
Book Synopsis Vinegars of the World by : Laura Solieri
Download or read book Vinegars of the World written by Laura Solieri and published by Springer Science & Business Media. This book was released on 2009-08-29 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vinegars can be considered as acidic products of special importance for the enri- ment of our diet, and resulting from the desired or controlled oxidation of ethanol containing (liquid) substrates. The traditional use and integration of vinegars in numerous cultures can be traced back to ancient times. In fact, the cultural heritage of virtually every civilization includes one or more vinegars made by the souring action (of micro-organisms) following alcoholic fermentation. It has been do- mented that the Egyptians, Sumerians and Babylonians had experience and tech- cal knowledge in making vinegar from barley and any kind of fruit. Vinegar was very popular both in ancient Greece and Rome, where it was used in food prepa- tions and as remedy against a great number of diseases. In Asia, the first records about vinegar date back to the Zhou Dynasty (1027-221 BC) and probably China’s ancient rice wines may have originally been derived from fruit, for which (malted) rice was substituted later. The historical and geographical success of vinegars is mainly due to the low technology required for their production, and to the fact that several kinds of raw materials rich in sugars may easily be processed to give vinegar. In addition, vi- gars are well-known and accepted as safe and stable commodities that can be c- sumed as beverages, health drinks or added to food as preservatives or as flavo- ing agents.
