Comparative Study of the Phenolic Composition of Seeds and Skins from Carme´n ere and Cabernet Sauvignon Grape Varieties Vitis vinifera L. during RipeningReport as inadecuate




Comparative Study of the Phenolic Composition of Seeds and Skins from Carme´n ere and Cabernet Sauvignon Grape Varieties Vitis vinifera L. during Ripening - Download this document for free, or read online. Document in PDF available to download.

Resumen

The phenolic composition of skins and seeds from Vitis vinifera L. cv. Carme´n ere and CabernetSauvignon grapes during ripening was evaluated by high-performance liquid chromatography-diodearray detection and spectrophotometric analysis. As compared to Cabernet Sauvignon grape skins,Carme´n ere grape skins presented higher contents of total anthocyanins, monomeric flavan-3-ols,and total flavonoids, a higher mean degree of polymerization, a higher percentage of galloylation, ahigher average molecular weight of the flavanol fraction, and a higher color intensity. As comparedto Cabernet Sauvignon grape seeds, Carme´n ere grape seeds presented a lower content ofmonomeric flavan-3-ols, a higher mean degree of polymerization, a higher percentage of galloylation,a higher average molecular weight of the flavanol fraction, a lower content of þ-catechin, andhigher contents of -epicatechin, epicatechin-3-O-gallate, gallic acid, and dimeric procyanidinsesterified with gallic acid. Altogether, we conclude that Carme´n ere grapes present a differentialcomposition and evolution of phenolic compounds when compared to Cabernet Sauvignon grapes.



Author: Obreque Slier, Elías; - López Solís, Remigio; - Zamora Marín, Fernando; - Peña Neira, Alvaro; - Da Silva, Jorge M. Ricardo;

Source: http://repositorio.uchile.cl/



DOWNLOAD PDF




Related documents