Use of Instrumental Acoustic Parameters of Winegrape Seeds as Possible Predictors of Extractable Phenolic Compounds

作者：Rolle Luca; Giacosa Simone; Torchio Fabrizio; Perenzon Daniele; Segade Susana Rio^*; Gerbi Vincenzo; Mattivi Fulvio

来源：Journal of Agricultural and Food Chemistry, 2013, 61(37): 8752-8764.

DOI：10.1021/jf4024382

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

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% %26lt; 19, 1.6 %26lt; RPIQ %26lt; 2.1).

• 出版日期2013-9-18