1. Plant Products and Human Nutrition Group, Graham Kerr Building, Division of Biochemistry and Molecular Biology, IBLS, University of Glasgow, Glasgow G12 8QQ, United Kingdom; Department of Human Nutrition, Glasgow Royal Infirmary, Queen Elizabeth Building, Glasgow G31 2ER, United Kingdom; and Departement d'Œnologie, Faculté de Pharmacie, Université de Montpellier, Avenue Charles Flahault, 34060 Montpellier Cedex 2, France