학술논문
Elucidations on the structures of some putative flavonoids identified in postharvest withered grapes (Vitis vinifera L.) by quadrupole time-of-flight mass spectrometry.
Document Type
Academic Journal
Author
De Rosso M; Chemistry Lab., Council for Agricultural Research and Economics - Viticulture & Enology (CREA-VE), Viale XXVIII aprile 26, Conegliano (TV), 31015, Italy.; Panighel A; Chemistry Lab., Council for Agricultural Research and Economics - Viticulture & Enology (CREA-VE), Viale XXVIII aprile 26, Conegliano (TV), 31015, Italy.; Dalla Vedova A; Chemistry Lab., Council for Agricultural Research and Economics - Viticulture & Enology (CREA-VE), Viale XXVIII aprile 26, Conegliano (TV), 31015, Italy.; Flamini R; Chemistry Lab., Council for Agricultural Research and Economics - Viticulture & Enology (CREA-VE), Viale XXVIII aprile 26, Conegliano (TV), 31015, Italy.
Source
Publisher: Wiley Country of Publication: England NLM ID: 9504818 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1096-9888 (Electronic) Linking ISSN: 10765174 NLM ISO Abbreviation: J Mass Spectrom Subsets: MEDLINE
Subject
Language
English
Abstract
Grape dehydration is an oenological process used for production of high-quality reinforced and sweet wines. High-resolution mass spectrometry (ultrahigh-performance liquid chromatography/quadrupole time-of-flight [UHPLC/QTOF]) was used to deepen the characterization of some flavonoids previously proposed in Corvina and Raboso Piave withered grapes. By performing a targeted data analysis workflow and orthogonal identification approaches (tandem mass spectrometry [MS/MS]), in silico fragmentation, and calculation of putative retention time), elucidation on the structures of six compounds previously proposed was achieved (taxifolin-pentoside, two tetrahydroxyflavanone-hexoside derivatives, a tetrahydroxy-dimethoxyflavanone-hexoside derivative, a pentahydroxyflavone, and peonidin-O-pentoside); and the structures of four putative new grape flavonoids were characterized (dihydromyricetin-O-hexoside, taxifolin-di-O-hexoside, isorhamnetin, and a pinoquercetin isomer). Findings enlarge the panorama of flavonoids in grape and of their possible biosynthetic pathways.
(© 2020 John Wiley & Sons, Ltd.)
(© 2020 John Wiley & Sons, Ltd.)