RT Journal Article
SR Electronic
T1 First Evidence of Acetaldehyde-Flavanol Condensation Products in Red Wine
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP 370
OP 373
DO 10.5344/ajev.1997.48.3.370
VO 48
IS 3
A1 Saucier, C.
A1 Little, D.
A1 Glories, Y.
YR 1997
UL http://www.ajevonline.org/content/48/3/370.abstract
AB A dimeric polyphenolic fraction was purified from a two months old Cabernet Sauvignon wine. This fraction was studied by LC-ES-MS. Several products with a 606 mass corresponding to a dimer of 2 flavanol monomer units linked by an ethyl bridge were detected. Identification of catechin-acetaldehyde dimers was achieved by injection of synthetic dimers. In addition to retention time, mass spectra were obtained on each peak. By increasing the cone voltage in the electrospray source, specific fragments could be generated which further confirm the structures of the molecules.