Biodiversity of Tunisian virgin olive oils: varietal origin classification according to their minor compounds
Autor: | Yveline Le Dréau, Sonda Laroussi-Mezghani, Mohamed Hammami, Josiane Molinet, Naziha Grati-Kamoun, Jacques Artaud |
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Přispěvatelé: | Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU), Laboratoire d'Instrumentation et Sciences Analytiques (LISA), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Systèmes Chimiques Complexes - Formulation - Qualité - Environnement (SCCFQE), Centre National de la Recherche Scientifique (CNRS)-Université Paul Cézanne - Aix-Marseille 3-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Avignon Université (AU)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2, Université de Monastir - University of Monastir (UM), Institut de l’olivier de Sfax, Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Université de la Méditerranée - Aix-Marseille 2-Université Paul Cézanne - Aix-Marseille 3-Université de Provence - Aix-Marseille 1-Avignon Université (AU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Aix-Marseille Université - Faculté des Sciences (AMU SCI), Aix Marseille Université (AMU), Univ. Monastir, LR12ES05, Lab-NAFS 'Nutrition - Functional Food & Vascular Health', Monastir, Tunisia., Institut de l'olivier de Sfax, Ministère de l’Agriculture, des Ressources Hydrauliques et de la Pêche Maritime [Tunisie] |
Jazyk: | angličtina |
Rok vydání: | 2016 |
Předmět: |
Squalene
0301 basic medicine β [SDV]Life Sciences [q-bio] Biodiversity Chemometric Autochthonous Tunisian varieties Biology Biochemistry Industrial and Manufacturing Engineering 03 medical and health sciences chemistry.chemical_compound 0404 agricultural biotechnology [CHIM.ANAL]Chemical Sciences/Analytical chemistry Botany Phenols ComputingMilieux_MISCELLANEOUS α Total phenols 030109 nutrition & dietetics 04 agricultural and veterinary sciences General Chemistry Minor fatty acids 040401 food science Horticulture chemistry γ- and δ-Tocopherols [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition Food Science Biotechnology Olive oil |
Zdroj: | European Food Research and Technology European Food Research and Technology, Springer Verlag (Germany), 2016, 242 (7), pp.1087-1099. ⟨10.1007/s00217-015-2613-9⟩ European Food Research and Technology, 2016, 242 (7), pp.1087-1099. ⟨10.1007/s00217-015-2613-9⟩ |
ISSN: | 1438-2377 1438-2385 |
DOI: | 10.1007/s00217-015-2613-9⟩ |
Popis: | International audience; The analysis of minor compounds (minor fatty acids, squalene, phenols and tocopherols) of eight autochthonous Tunisian varieties of virgin olive oils (VOOs) (Chemchali, Chemlali Sfax, Chemlali Zarzis, Chetoui, Oueslati, Sayali, Zalmati and Zarrazi) allows for the varietal origin authentication. The compositions of minor ω9 and ω7 fatty acids, especially 16:1 and 18:1 isomers, are important criteria for distinction among eight varieties of VOOs. The squalene content was ranged between 1.39 and 5.37 g/kg. Total phenol and the sum of α-, β- and γ-tocopherol contents were, respectively, ranged between 81–691 and 147–585 mg/kg. This minor fraction is not only highly dependent on the variety, but also the maturity index. Chemchali, Zarrazi and Sayali are characterized by having high content in total phenols, whereas Chemlali Sfax, Chemlali Zarzis and Zalmati are rich in total tocopherols. The intervarietal variation in the studied minor compounds was confirmed by chemometric treatment through PCAs. The potential of using the minor compounds in the authentication of the Tunisian olive oil varietal origin was tested through PLS-DA performed for the two most representative varieties (Chemlali Sfax and Chetoui). The obtained percentages of correct classification (superior to 97 %) proved the potential of the used method in varietal origin authentication. |
Databáze: | OpenAIRE |
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