文章基本信息

标题：Flash Gas Chromatography in Tandem with Chemometrics: A Rapid Screening Tool for Quality Grades of Virgin Olive Oils
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作者：Sara Barbieri ; Chiara Cevoli ; Alessandra Bendini 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2020
卷号：9
期号：7
页码：862-872
DOI：10.3390/foods9070862
出版社：MDPI Publishing
摘要：This research aims to develop a classification model based on untargeted elaboration of volatile fraction fingerprints of virgin olive oils (n = 331) analyzed by flash gas chromatography to predict the commercial category of samples (extra virgin olive oil, EVOO; virgin olive oil, VOO; lampante olive oil, LOO). The raw data related to volatile profiles were considered as independent variables, while the quality grades provided by sensory assessment were defined as a reference parameter. This data matrix was elaborated using the linear technique partial least squares-discriminant analysis (PLS-DA), applying, in sequence, two sequential classification models with two categories (EVOO vs. no-EVOO followed by VOO vs. LOO and LOO vs. no-LOO followed by VOO vs. EVOO). The results from this large set of samples provide satisfactory percentages of correctly classified samples, ranging from 72% to 85%, in external validation. This confirms the reliability of this approach in rapid screening of quality grades and that it represents a valid solution for supporting sensory panels, increasing the efficiency of the controls, and also applicable to the industrial sector.
关键词：virgin olive oil; quality; volatile compounds; sensory analysis; chemometrics virgin olive oil ; quality ; volatile compounds ; sensory analysis ; chemometrics