(PHYS) - The research conducted at the National Wine and Grape Industry Centre (NWGIC) at Charles Sturt University (CSU), in collaboration with Dr Daniel Dias at The University of Melbourne, examined the impact of light on the quality of white wine, with the ultimate aim to improve its shelf life. Lead researcher, Dr Andrew Clark said, "A series of experiments dating back to 2008 have attempted to better understand the impact of light on several white wine components that have previously not been investigated. The components were tartaric acid, which is a major organic acid in wine, and iron, a metal ion found at low concentrations in all wines.