Abstract

The impact of cluster heterogeneity on mechanical properties, chromatic indices and chemical composition of Italia table grape berries sorted by flotation was evaluated in this study. The density sorting at commercial harvest permitted to get berries of different ripeness and relatively different quality attributes. Individually, some grape chromatic characteristics, physical characteristics (weight of the whole berry and berry skin), content and composition of reducing sugars, organic acids and phenolic compounds (flavanols of low molecular mass in berry skins) permitted to characterise and to differentiate berries belonging to different density classes. However, the tested mechanical properties were not related to the berry density. When the variables that significantly contributed to the berry differentiation were globally assessed, the chemical parameters related to sugars (142.3–164.4 g kg-1), content of skin oligomeric flavanols [46.3–137 mg (+)-catechin kg-1], berry skin weight (379–607 mg), yellow/blue colour component (26.31–29.96) and chroma (26.40–30.06) were the more representative.

Autore Pugliese

• De Palma Laura

Tutti gli autori

• S. Río Segade , S. Giacosa , L. de Palma , V. Novello , F. Torchio , V. Gerbi , L. Rolle

Titolo volume/Rivista

INTERNATIONAL JOURNAL OF FOOD SCIENCE & TECHNOLOGY

Anno di pubblicazione

2013

ISSN

0950-5423

ISBN

Non Disponibile

Numero di citazioni Wos

10

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

15

Ultimo Aggiornamento Citazioni

Non Disponibile

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile