“Polyphenols, Wine and Health” Symposium in Bordeaux, France Proceedings of the Phytochemical Society of Europe, Bordeaux, France, 14 th -16 th April, 1999 Volume n° 48 edited by Dr. Catherine Chèze and Prof. Joseph Vercauteren University Victor Segalen Bordeaux 2, France and Prof. Robert Verpoorte University of Leiden, The Netherlands KLUVER ACADEMIC PUBLISHERS DORDRECHT / BOSTON / LONDON 2001