AGRICULTURAL
UNIVERSITY OF ATHENS
Department of Food 
Science & Human Nutrition

Oenology Ι

Content

Lectures
1. Berry composition
Skin, anthocyanins, proanthocyanidins, phenolic compounds , aromatic precursors
Flesh- sugars, nitrogen compounds
Seeds, tannins, linolenic acid
Grape maturity
Sugars evolution
Acids evolution
Phenolic maturity
3. Harvest
4. Common pre-fermentative procedures, sorting, destemming, crushing
5. Sulfur dioxide
6. Must adjustment, potential alcohol reduction, titratable acidity adjustment
7. Yeast assimilable nitrogen
8. Alcoholic fermentation biochemistry
9. White winemaking , alcoholic fermentation, yeast strains
10. New methods of white winemaking
11. Red winemaking, maceration methods
12. Malolactic fermentation, lactic bacteria, conditions for malolactic fermentation
13. Sweet wines elaboration

Laboratory
1. Measuring Brix
2. Measuring Baume
3. Measuring pH
4. Measuring titratable acidity
5. Measuring free
6. Measuring total sulfides
7. Measuring reducing sugars
8. Measuring ethanol by distillation
9. Measuring volatile acidity by steam distillation
10. Measuring total phenolics
11. Colour measurements
12. Combining quality control measures for the wines
13. Repetition

Learning results

It aims at:

a) Acquiring the knowledge of grape/berries composition, grape maturity process
b) Common mechanical processes among the various winemaking products
c) Common chemical processes, must adjustment methods
d) White winemaking
e) Red winemaking
f) Malolactic fermentation

The aim of the practical teaching is to train the students to measure basic wine analytical procedures such as sugars, ph, titratable acidity, free and total sulfides, ethanol, volatile acidity, reducing sugars, colour density, total phenolics

At the end of the course, students should be able to:

  • Understand the meanings of grape composition and the technological importance of it part of the grape
  • Understand the common practices
  • Monitor the must corrections and improvements
  • To know the basic must adjustment methods and to take decisions concerning the addition of specific enological products in must and wine
  • To know the details of white winemaking
  • To know the details of red winemaking

Bibliography

1. Ribereau-Gayon, P., Glories, Y., Maujean, A., Dubourdieu, D. (2000) Handbook of enology, volume 2, John Wiley & Sons Ltd, England
2. Principles and Practices of Winemaking . Boulton B. Roger, Singleton L. Vernon, Bisson F. Linda, Kunkee E. Ralph Springer Science & Business Media, 1999.
3. Understanding Wine chemistry. Waterhouse Andrew, Sacks Gavin, Jeffery David, Wiley 2016

NEWSLETTER

The Department of Food Science and Human Nutrition (renamed Department of Food Science and Technology, Decree 80/27/5/13, Government Gazette A119 28/5/13) offers its students the scientific background for a rational approach to scientific and technological issues related to the food sector.
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