Influence of post-pruning storage on stilbenoid levels in Vitis vinifera L. canes

Gorena, T.; Saez, V; Mardones, C.; Vergara C.; Winterhalter, P; von Baer, D.

Abstract

Increasing evidence for the health benefits of E-resveratrol has triggered interest in stilbenoids in grapes, wine and by-products. Less attention has been paid to stilbenoid levels in viticulture residues. However, grape canes are a promising source of stilbenoids and have economic potential because they are a source of high-value phytochemicals. The objective of this research was to determine the effect of post-pruning storage on stilbenoid levels in grape canes. In most samples, the predominant stilbenoid was (E)-resveratrol, followed by (E)-epsilon-viniferin. In Pinot Noir canes stored after pruning at room temperature, the stilbenoid levels increased significantly after 8 months. The concentration was increased by up to fivefold, reaching 4777mg kg(-1) dw (dry weight). This effect did not occur in frozen, lyophilised or milled material. Branches collected directly from the plants after grape vintage and those remaining on the plant after pruning showed only a small increase in stilbenoid levels. (C) 2014 Elsevier Ltd. All rights reserved.

Más información

Título según WOS: Influence of post-pruning storage on stilbenoid levels in Vitis vinifera L. canes
Título según SCOPUS: Influence of post-pruning storage on stilbenoid levels in Vitis vinifera L. canes
Título de la Revista: FOOD CHEMISTRY
Volumen: 155
Editorial: ELSEVIER SCI LTD
Fecha de publicación: 2014
Página de inicio: 256
Página final: 263
Idioma: English
DOI:

10.1016/j.foodchem.2014.073

Notas: ISI, SCOPUS