Parallel factor analysis for monitoring data from a grape harvest in Qualified Designation of Origin Rioja including spatial and temporal variability

作     者：Melendez, E. Sarabia, L. A. Ortiz, M. C. 

作者机构：Estn Enol Haro Haro 26200 La Rioja Spain Univ Burgos Fac Ciencias Dept Quim Burgos 9001 Spain Univ Burgos Fac Ciencias Dept Matemat & Computac Burgos 9001 Spain 

出 版 物：《CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS》 (化学计量学与智能实验系统)

年 卷 期：2015年第146卷

页      面：347-353页

核心收录：

学科分类：07[理学] 0804[工学-仪器科学与技术] 0714[理学-统计学（可授理学、经济学学位）] 0703[理学-化学] 0701[理学-数学] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Ministerio de Ciencia e Innovacion [CTQ2014-53157-R] Junta de Castilla y Leon [BU108A11-2] 

主　　题：Three-way data Parallel Factor Analysis Grape quality Maturation Qualified Designation of Origin Rioja Variability among vineyards 

摘      要：The proper ripening of grapes is the key to obtain a high-quality wine. Ripening is a temporal process that is influenced, in addition to uncontrollable climate factors, by the spatial distribution of the vineyard and planted variety. It is a complex process that cannot be characterized by a single parameter;rather, it is a modification of the profile of the compounds of the grape. This paper analyzes the joint evolution of twelve physicochemical parameters determined in red grapes from four different varieties, in sixteen representative (in both geographical and edaphic point of view) plots belonging to the Qualified Designation of Origin (DOC) Rioja. Samples were collected in September 2009 during four consecutive weeks prior to harvest. The data are naturally structured in a three-dimensional cube of data (named tensor) with these profiles: sample (plot/variety), physicochemical, and temporal. For the first time, studies are made for jointly analyzing the effect of the spatial and temporal distribution on the physicochemical profile of the grape. A PARAFAC model shows an internal data structure that accurately reproduces the ripening process with its distinctive features according to plot/variety, evolution of the physicochemical parameter of grapes, and ripening time. PARAFAC analysis reveals the different grape maturity depending on the vineyard s situation (zone and altitude) and the grape variety (garnacha, tempranillo, graciano, mazuelo). The obtained information allows evaluating the attainable quality in the grape related to the potential of the zone and its variety. (C) 2015 Elsevier B.V. All rights reserved.