Oenology II (2015/2016)

Course code
4S00151
Credits
12
Coordinator
Fabio Favati
Teaching is organised as follows:
Unit Credits Academic sector Period Academic staff
TECNOLOGIE E PROCESSI ENOLOGICI 9 AGR/15-FOOD SCIENCE AND TECHNOLOGY See the unit page See the unit page
TECNOLOGIE E CONDIZIONAMENTO DEI VINI 3 AGR/15-FOOD SCIENCE AND TECHNOLOGY See the unit page See the unit page

Learning outcomes

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MM: TECNOLOGIE E PROCESSI ENOLOGICI
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The purpose of this course is to provide knowledge concerning the chemical and biochemical mechanisms taking place during winemaking, as well as on the main steps of the winemaking process and related modulating factors. In addition to discussing the major red and white winemaking protocols, the course features a section on ‘special’ winemaking procedures, including production of rosé wines, sparkling wines, low sulfites wines and wines from withered grapes. The mechanisms contributing to wine ageing and maturation will be discussed in relationship to the most recent advances in wine science.
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MM: TECNOLOGIE E CONDIZIONAMENTO DEI VINI
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Aim of the course is to provide the students with the basic knowledge related to wine packaging and conditioning, with a special emphasis on the relationships among container, closure and product. At the end of the course the students should be able to choose, according to the product category and characteristics, consumers’ requests and production costs, the most suitable conditioning procedure as well as the packaging so to ensure that the required quality and shelf-life of the products. Through an active participation to the solution of practical case studies, the students will acquire the required knowledge and skills for the correct choice of suitable technical processes, containers and closures, as well as for the management of problems that may arise during the various steps of wine conditioning. Furthermore, participating to guided visits to wine production plants or to factories manufacturing equipment for the wine industries, the students will meet and discuss with technical specialists and will be able to realize the issues related to the real life on a production line.

Syllabus

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MM: TECNOLOGIE E PROCESSI ENOLOGICI
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- Grape ripening and its influence on the main berry components of enological interest - Must enziamtic activities - Grape harvest and its influence on wine quality - Mechanins of sulfur dioxide action - Wine aroma: nature and origin of wine aroma compounds - The management of alcoholic fermentation: Yeast metabolism and production of aroma compounds. Fermentation nutrients. Criteria for the selection of yeast strains - The production of white wine: Pre-fermentative steps. Management of pressing. Reductive and oxidative handling of grape must. The management of alcoholic fermentation. The contribution of yeast lees. Main process indicators and relative analyses. - The production of red wine: Pre-fermentative steps. Management of maceration. The management of alcoholic fermentation. Main process indicators and relative analyses. - The manageemnt of malolactic fermentation. Bacteria metabolism and production of aroma compounds. Fermentation nutrients. Criteria for the selection of bacterial strain. - Wine maturation and ageing in tank and in barrel. The contribution of oxygen - Special wines: Rosé wines, sparkling wines, low sulfites wines and wines from withered grapes. - Wine stabilization treatments. - Wine bottle aging. Main chemical mechanisms. Role of oxygen. Evolution of mouthfeel and formation of the aging ‘bouquet’ - Wine defects, prevention and cure.
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MM: TECNOLOGIE E CONDIZIONAMENTO DEI VINI
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The main issues related to conditioning and packaging of wine products. Packaging materials: glass, PET, tetrapack, steel; technical characteristics and properties, advantages and disadvantages related to their utilization. Bottle closures: natural and synthetic cork, metallic screw cap closures, crown caps, glass stoppers; technical characteristics and properties, advantages and disadvantages related to their utilization. Cleaning and sanitation processes for wine containers: how and why. Choice and use of cleaning and sanitation chemicals, the role of water; CIP and COP technical choices. Wine prefilling treatments: cooling, filtration technology, filtration index. Filling of wine containers: description of the available equipment, properties, advantages and disadvantages, choice of the suitable equipment according to the product’s characteristics. The use of heat shrink capsules, collars, labels: technical characteristics, equipment, advantages and disadvantages related to different labelling techniques. Besides the suggested textbooks, some study material might also be provided by the lecturer. Through the presentation of real case stydies , the students will be guided to find practical answers to the problems, therefore being obliged to have a global approach to the various issues and to take care of all the possible interactions that may occur within the various steps of the conditioning process and the product. Within this frame, students will also participate to guided visits to wine production plants or to factories manufacturing equipment for the wine industry

Assessment methods and criteria

In order to pass the course of Oenology 2, students are required to be evaluated for each module of the exam. For each module the student wills be graded over a score of 30 points, being 18 the minimum score to pass, and the final score of the whole course will be calculated as weighted average of the two scores, taking into account the number of CFU and the received score. Final score= [(Score of Module1 x 9CFU) + (Score of Module2 x 3CFU)]/12 CFU.
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MM: TECNOLOGIE E PROCESSI ENOLOGICI
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Oral exam
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MM: TECNOLOGIE E CONDIZIONAMENTO DEI VINI
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Oral exam - Initially the student will be asked to discuss one of the topics of the course that he considered of the utmost interest. Afterwards, the teacher will present a practical problem that may be faced in the real working life and will evaluate how the candidate will organize and utilize the scientific and technical skills acquired during the study to highlight a possible solution to the problem. In this way the student will be oriented to study for acquiring not a mere "theoretical knowledge" but a "practical" one Students are not required to take a specific exam for the practical part of the course. However, the acquired knowledge and skills will be evaluated within the oral exam set for the theoretical part of the course, taking into account the students’ capability to adapt and use in the real productive world the acquired theoretical knowledge and skills.

Reference books
Author Title Publisher Year ISBN Note
Trapani N. Cultura e tecnica Enologica. Vol. 3 Stabilizzazione Imbottigliamento Vini Speciali Enovitis 2012 978-88-90-14334-2
Mazzoleni V. (a cura di) Il sughero manuale tecnico per il corretto utilizzo dei tappi Disponibile On line http://www.amorimcorkitalia.com/img/Manuale_Tecnico_per_il_corretto_utilizzo_dei_Tappi.pdf Lucini officina d’arte grafica 2012
Liberati D. I tappi sintetici in enologia ENO-ONE 2005 978-8-888-79204-0
Mazzoleni V., Zironi R., Campisi B. Manuale d’uso sulle tecniche di tappatura delle bottiglie di vino Consorzio per l’AREA di ricerca scientifica e tecnologica di Trieste 2001
Calà P. Sciullo A. Materiali destinati al contatto con gli alimenti Chiriotti Editore 2006 88-85022-97-9
Ribereau-Gayon Trattato di enologia vol I e II (Edizione 3) Edagricole 2007
Nardin G., Gaudio A., Antonel G., Simeoni P. Impiantistica enologica. Ciclo tecnologico di vinificazione e progettazione degli impianti Edagricole-New Business Media 2010 978-88-50-65124-5
Jackson, Ronald Wine Science (Edizione 3) Elsevier 2014 978-0-12-381468-5