Project Number: WW WdT 17-01
Project leader: du Toit, W
The evolution of phenolics and loss of colour after red wine fermentation and during aging is a relevant issue for wine producers.
Project Number: WW WDT 15-02
Project leader: Du Toit, W J
Tannins play a critical role in the colour stabilization, fullness and mouth feel of red wines. Grape derived tannins form complex pigments with anthocyanins during…
Project Number: WW WDT 15-01
Project leader: Du Toit, W J
Oxygen exposure can drastically change the aroma and quality of white wines. During bottling a number of steps are taken to prevent unwanted oxygen pick up to…
Project Number: WW WDT 13-01
Project leader: Du Toit, W J
The important role that phenolics such as tannins and anthocyanins play in red wine is well known. Anthocyanins contribute to the colour of red wine, while tannins play a…
Project Number: WW WDT 12-02
Project leader: Wessel du Toit
Grape yields in red wine production have been a topic of investigation for a long period of time. In some South African wine producing areas, yields are often low…
Project Number: WW WDT 11-01
Project leader: Du Toit, W J
The role that volatile thiols, responsible for the tropical fruit aroma, play in South African Sauvignon blanc wines are unknown. The analyses of these compounds…