2011_12
Educational guide 
Faculty of Oenology
A A 
 
 
Oenology (2010)
 Subjects
  PHENOLIC COMPOUNDS, POLYSACCHARIDES AND PROTEINS IN WINE
   Contents
Topic Sub-topic
1. Introduction to the color of red wines. Description of color and its evolution throughout the time.
2. Structure and chemical properties of anthocyanins and flavanols.
3. Factors affecting phenolic composition of grapes; Edafolcimatic factors, Genetic factors, cultural factors; Phenolic maturity concept
4. Chemistry of the color of red wines:
a. Copigmentation.
b. Condensation reactions between anthocyanins and flavanols.
c. Origin of piranoanthocianins.
d. Browning.
5. Technological factors affecting the extraction and stabilization of color matter. Organoleptic incidence.
6. The oak and the barrels: Influence of ageing on the organoleptic characteristics of wine. Alternatives of the barrels ageing: Microoxigenation, aromatization with oak chips
7. Considerations about bottling and the evolution of wine in the bottle.
8. Analysis:
• Fractionation techniques of the color matter of wine.
• Identification of pigments: Classic techniques and HPLC-DAD-MS.
• Evaluation of the properties of the functional components of color: chromatic characteristics and astringency.
• Sensory analysis of red wines
9. Knowing the proteins of white wines and their sensory and technological implications.
10. Knowing the polysaccharides of wine and their sensory and technological implications.