Journal
FOOD CHEMISTRY
Volume 307, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2019.125556
Keywords
Fingerprinting; Geographical origin; Virgin olive oil; Sesquiterpene; Food authentication
Funding
- European Commission within the Horizon 2020 Program (2014-2020) [635690]
- Ministerio de Ciencia, Innovacion y Universidades (MICINN) from Spain through the Juan de la Cierva program [JCI-2012_13412]
- Ministerio de Ciencia, Innovacion y Universidades (MICINN) from Spain through the Ramon y Cajal program [RYC-2017-23601]
- Ministerio de Educacion, Cultura y Deporte (MECD) from Spain through the FPU pre-doctoral program [FPU16/01744]
- H2020 Societal Challenges Programme [635690] Funding Source: H2020 Societal Challenges Programme
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The verification of the geographical origin of extra virgin (EVOO) and virgin olive oil (VOO) is crucial to protect consumers from misleading information. Despite the large number of studies performed, specific markers are still not available. The present study aims to evaluate sesquiterpene hydrocarbons (SHs) as markers of EVOO geographical origin and to compare the discrimination efficiency of targeted profiling and fingerprinting approaches. A prospective study was carried out on 82 EVOOs from seven countries, analyzed by Headspace Solid Phase Microextraction-Gas Chromatography-Mass Spectrometry (HS-SPME-GC-MS). Classification models were developed by Partial Least Square-Discriminant Analysis (PLS-DA) and internally validated (leave 10%-out crossvalidation). The percentage of correct classification was higher for the fingerprinting (100%) than for the profiling approach (45.5-100%). These results confirm the suitability of SHs as EVOO geographical markers and establish the fingerprinting as the most efficient approach for the treatment of SH analytical data with this purpose up to date.
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