The aims of the project were:
1. To characterised and optimise release/extraction of anthocyanins through yeast enzymes
(pectinases, etc).
2. Identify and characterise biochemical reactions that are essential for the formation of
stable anthocyanin-derived pigments.
3. Identify and characterise yeast catabolic processes that are responsible for anthocyanin
degradation (glycosidases, oxidases, etc).
4. Quantify and characterise yeast interactions, which may contribute to removal of
pigments (anthocyanins and pigmented polymers) through binding to yeast lees.
5. Develop ranking for key parameters according to magnitude of influence over colour.
6. Identify critical variables for predictable modulation of colour in red wine fermentations.