English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/17797
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Comparison of Ozone and UV-C Treatments on the Postharvest Stilbenoid Monomer, Dimer, and Trimer Induction in Var. ‘Superior' White Table Grapes

AuthorsGonzález-Barrio, Rocío ; Beltrán Riquelme, David; Cantos Villar, Emma; Gil Muñoz, M.ª Isabel; Espín de Gea, Juan Carlos ; Tomás Barberán, Francisco
KeywordsTable grapes
Issue Date13-May-2006
PublisherAmerican Chemical Society
CitationJournal of Agricultural and Food Chemistry 54(12): 4222-4228 (2006)
AbstractPostharvest treatment of seedless white table grapes (var. ‘Superior') with different gas ozone concentrations (3.88 and 1.67 g/h) for 1, 3, and 5 h induced an increase in stilbenoid biosynthesis [trans-resveratrol, piceatannol, and viniferinas (resveratrol dehydrodimers and dehydrotrimers)] during storage at 22 °C and 95% relative humidity. The maximal resveratrol concentration was reached after 2 days of storage, and this amount was similar to that induced by optimized UV-C treatments (1 min, 510 W, 40 cm). Although similar resveratrol concentrations accumulated in grapes after both UV-C and O3 treatments (maximum ozone production and time), the ozone treatment was more efficient in inducing viniferins accumulation in grape berries. A sequence in the biosynthesis of stilbenoids was observed, starting with the resveratrol monomer, continuing with the resveratrol dehydrodimers ε-viniferin and δ-viniferin, and ending with four different resveratrol dehydrotrimers. These trimers were different from α-viniferin, a trimer previously reported to be induced in grapes after biotic and abiotic stresses. Two α-viniferin isomers were also detected in the ozone-treated grapes, although at very low concentrations that prevented their quantification.
Description7 pages, 12 figures.
Publisher version (URL)http://dx.doi.org/10.1021/jf060160f
Appears in Collections:(CEBAS) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.