Journal
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
Volume 98, Issue 11, Pages 4245-4252Publisher
WILEY
DOI: 10.1002/jsfa.8946
Keywords
virgin olive oil; stability; monitoring multivariate control chart; PCA; similarity analysis; distances
Funding
- Andalusia Regional Government (Consejeria de Agricultura, Pesca y Desarrollo Rural, Spain)
- European funds (ERDF, European Regional Development Fund in Andalusia)
- project SensOLEO-2015
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BACKGROUNDThe organoleptic quality of virgin olive oil depends on positive and negative sensory attributes. These attributes are related to volatile organic compounds and phenolic compounds that represent the aroma and taste (flavour) of the virgin olive oil. The flavour is the characteristic that can be measured by a taster panel. However, as for any analytical measuring device, the tasters, individually, and the panel, as a whole, should be harmonized and validated and proper olive oil standards are needed. RESULTSIn the present study, multivariate approaches are put into practice in addition to the rules to build a multivariate control chart from chromatographic volatile fingerprinting and chemometrics. Fingerprinting techniques provide analytical information without identify and quantify the analytes. This methodology is used to monitor the stability of sensory reference materials. CONCLUSIONThe similarity indices have been calculated to build multivariate control chart with two olive oils certified reference materials that have been used as examples to monitor their stabilities. This methodology with chromatographic data could be applied in parallel with the panel test' sensory method to reduce the work of sensory analysis. (c) 2018 Society of Chemical Industry
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