Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 63, Issue 17, Pages 4376-4385Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf506097u
Keywords
phenolic compounds; virgin olive oil; liquid chromatography-mass spectrometry; Picholine marocaine; interannual and intraregional study
Funding
- Andalusia regional government (Department of Economy, Innovation and Science) [P09-FQM-5469]
- Millennium Challenge Account Morocco
- Fruit Tree Productivity Project (PAF)/Olive cultivation register Project/North Moroccan Regions
- Spanish Agency for International Development Cooperation (AECID)
- Vice-Rector's Office for International Relations and Development Cooperation of the University of Granada
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The phenolic fraction of monovarietal virgin olive oils (VOOs) from the main Moroccan cultivar Picholine marocaine (142 samples from three different subareas of the Meknes region) was studied over three consecutive crop seasons (2011, 2012, and 2013) using a powerful LC-MS methodology. First, LC-ESI-TOF MS was used to get a comprehensive characterization of the phenolic fraction; afterward, LC-ESI-IT MS was utilized for further identification (MS/MS experiments) and quantitation purposes. A total of 28 phenolic compounds (and quinic acid) were determined, revealing the complex profile of Meknes VOO, composed, in order of abundance, by secoiridoids, phenolic alcohols, lignans, flavonoids, and phenolic acids. Tukeys test was applied to ascertain possible significant intraregional and/or interannual variations of the phenolic content of the Meknes VOOs under study. Results showed that the content of phenolic compounds was mainly related to the crop season.
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