Use of instrumental acoustic parameters of winegrape seeds as possible predictors of extractable phenolic compounds.

Fabrizio Torchio, Luca Rolle, Simone Giacosa, Daniele Perenzoni, Susana Río Segade, Vincenzo Gerbi, Fulvio Mattivi

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8 Citazioni (Scopus)

Abstract

The use of instrumental acoustic parameters produced during a compression test as reliable predictors of the extractable phenolic composition in intact winegrape seeds, determined by reference chemical methods, was evaluated by means of the analytical performance of calibration models. These models were developed only for those phenolic compounds most significantly and strongly correlated with the acoustic parameters. The analytical performance of the models was expressed in terms of standard error of cross-validation (SECV) and residual predictive interquartile amplitude (RPIQ), among other statistics. Several acoustic parameters showed satisfactory predictive accuracy for the percentage of galloylation in the terminal units, the content of (-)-epicatechin, and the mean degree of polymerization. Most of the reliable models developed are fairly recommended not for quantitative purposes but for fast screening (SECV% < 19, 1.6 < RPIQ < 2.1).
Lingua originaleEnglish
pagine (da-a)8752-8764
Numero di pagine13
RivistaJournal of Agricultural and Food Chemistry
Volume61
DOI
Stato di pubblicazionePubblicato - 2013

Keywords

  • LC-MS
  • acoustic parameters
  • extractable phenols
  • instrumental texture analysis
  • seeds crunchiness

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