Innovative and thorough practice to certify reference materials for sensory defects of olive oil.

An important problem in the olive sector is the occasional mismatch of results obtained by different tasting panels when the same olive oil sample is analysed. These discrepancies could be minimised by using reference materials (RM) for taster training. A comprehensive protocol based on the combined use of sensory and instrumental analysis for the certification of olive oil batches as RMs, developed within the framework of the project 'Operational Group INTERPANEL', is proposed. Similarity indices (R2, cosθ and NEAR) applied on GC-MS fingerprints, allow a successful homogeneity and stability assessment of produced batches. Furthermore, the use of robust statistics combined with a set of instructions developed to remove outliers were applied with excellent results on sensory data set provided by supra-panel composed by more than 100 qualified tasters. This work is the first to provide a comprehensive protocol for certification of real olive oil samples as RM for sensory analysis. Copyright © 2022 The Author(s). Published by Elsevier Ltd.. All rights reserved.

Citation

Fidel Ortega-Gavilán, José Antonio García-Mesa, José Carlos Marzal-Fernández, Francisco J Moreno-Ballesteros, Francisco P Rodríguez-García, Antonio González-Casado, Luis Cuadros-Rodríguez. Innovative and thorough practice to certify reference materials for sensory defects of olive oil. Food chemistry. 2022 Jun 30;380:132195

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PMID: 35086013

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