Aix Marseille Univ, Univ Avignon, CNRS, IRD, IMBE, Marseille, France; ICAAM - Instituto de Ciências Agrárias e Ambientais Mediterrânicas, Universidade de Évora, Núcleo da Mitra, Ap. 94, 7006-554, Évora, Portugal.
ICAAM - Instituto de Ciências Agrárias e Ambientais Mediterrânicas, Universidade de Évora, Núcleo da Mitra, Ap. 94, 7006-554, Évora, Portugal; HERCULES, Universidade de Évora, Palácio do Vimioso, 7000-089, Évora, Portugal.
Talanta. 2020 Jan 15;207:120276. doi: 10.1016/j.talanta.2019.120276. Epub 2019 Aug 16.
This paper aims to study the volatile composition of monovarietal extra-virgin olive oils from different varieties from Alentejo region (Portugal). Volatile profile of 82 olive oils was performed by head-space solid phase micro-extraction hyphenated with gas chromatography/mass spectrometry (HS-SPME-GC/MS). A total of 107 volatile compounds, belonging to several class of compounds, like aldehydes, hydrocarbons, alcohols, terpenoids, ketones, sulphurous compounds, acids and esters were identified, assigned to a specific biogenic origin and total abundances were plotted in modified 3D van Krevelen diagrams. The 3D plots showed that there are compositional differences among olive oil varieties. Discriminant analysis confirmed that the pattern of volatile compounds includes enough information to group sample variety amongst discrete monovarietal olive oil. Combining statistical analysis (t-Student) and graphical-tools (van Krevelen diagram) seems to be a powerful tool to determine what molecular families were characteristic of each olive oil variety, contributing to the valorization of monovarietal Portuguese olive oil.
本研究旨在分析来自葡萄牙阿连特茹地区不同品种的单品种特级初榨橄榄油的挥发性成分。通过顶空固相微萃取-气相色谱/质谱联用（HS-SPME-GC/MS）对 82 种橄榄油的挥发性成分进行了分析。共鉴定出 107 种挥发性化合物，属于醛类、烃类、醇类、萜烯类、酮类、含硫化合物、酸类和酯类等多种化合物，这些化合物都有特定的生物起源，并根据总丰度绘制了改良的 3D 范科伦图。3D 图谱表明，不同品种的橄榄油之间存在组成差异。判别分析证实，挥发性化合物的模式包含足够的信息，可以将样品品种归为离散的单品种橄榄油。结合统计分析（t-Student）和图形工具（范科伦图）似乎是一种强大的工具，可以确定哪些分子家族是每种橄榄油品种的特征，有助于提高葡萄牙单品种橄榄油的价值。
