title: Characterization of grape procyanidins using high-performance liquid Chromatography/Mass spectrometry and matrix-assisted laser Desorption/Ionization time-of-flight mass spectrometry.
abstract: High-performance liquid chromatography/mass spectrometry (HPLC/MS) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) were used to characterize the procyanidin composition of the grape seed extract. The detection of the oligomers composed of (+)-catechin, (-)-epicatechin, and their galloylated derivatives in the grape seeds is demonstrated. With MALDI-TOF MS, oligomers up to nonamers were observed. The potential of the MALDI-TOF MS technique as a quantification tool is also discussed. The information presented in this study could lead to the determination of procyanidin content and their molecular weight distribution in grape seeds.
authors.affiliation: Science and Technology, Givaudan Flavors Corporation, 1199 Edison Drive, Cincinnati, Ohio 45216, USA. ying.yang@givaudan.com
authors.forename: Y
authors.initials: Y
authors.lastname: Yang
authors.forename: M
authors.initials: M
authors.lastname: Chien
mesh_terms: D044946:Biflavonoids; D002392:Catechin / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D013058:Mass Spectrometry / Q000379:methods*; D044945:Proanthocyanidins; D019685:Rosales / Q000737:chemistry*
chemical_list: D044946:Biflavonoids; D044945:Proanthocyanidins; C017674:procyanidin; D002392:Catechin