The role of light, temperature and wine bottle colour on pigment enhancement in white wine

► Enhanced wine colour arises from elevated temperatures and/or light exposure. ► At a given temperature, light alone can induce substantial colour changes. ► No wine bottle glass colour totally prevented light induced colour development. ► Protection level was Flint < Arctic Blue < French Green < Antique Green glass. ► Riboflavin undergoes a complex series of reactions on light exposure.