Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 63, Issue 29, Pages 6493-6500Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.5b02979
Keywords
Olea europaea; olive tree wood; agricultural byproducts; Spanish olive cultivars; 'Arbequina'; 'Cornicabra'; 'Empeltre'; 'Farga'; 'Gordal sevillana'; 'Hojiblanca'; 'Lechin de Sevilla'; 'Manzanilla de Sevilla'; 'Picual'; 'Verdial de Badajoz'; radical-scavenging activity; simple phenols; lignans; flavonoids; iridoids; secoiridoids; multivariate analysis
Funding
- Spanish Ministerio de Educacion y Ciencia [CTQ2005-07005/PPQ]
- FEDER funds of the European Union
- Andalusian Government Junta de Andalucia
- Centro de Instrumentacion Cientifico-Tecnica of the University of Jaen
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The chemical composition and radical-scavenging activity of wood samples from 10 main Spanish olive cultivars were studied. The wood samples were collected during the pruning works from trees growing under the same agronomical and environmental conditions. The 10 ethyl acetate extracts were submitted to HPLC-DAD/ESI-MS analysis to determine the phenolic constituents. Seventeen compounds were identified (10 secoiridoids, 3 lignans, 2 phenol alcohols, 1 iridoid, and 1 flavonoid) by comparison with authentic samples. Significant quantitative and qualitative differences Were found among olive cultivars. The lignan (+)-1-hydroxypinoresinol 1-O-beta-D-glucopyranoside was the major compound in all olive cultivars, except in cultivars 'Farga' and 'Picual' The multivariate analysis of all data revealed three sets of cultivars with similar compositions. Cultivars 'Gordal sevillana' and 'Picual' had the most distinct chemical profiles. With regard to the radical-scavenging activity, cultivar 'Picual', with oleuropein as the major phenolic, showed the highest activity (91.4 versus 18.6-32.7%).
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