Abstract
Varietals and geographic location are a distinct quality brand in Extra Virgin Olive Oil (EVOO) production. Italy represents one of the most producers. Here, a pilot study in assessing the elemental geo-markers of Italian EVOO through a semiquantitative EDXRF analysis together with Chemometrics are carried out to find the way to discriminate EVOOs. Elemental geo-benchmarks for ten investigated Italian regions, main cultivars and heavy-metal contamination are assessed. Fe, Ni, and Ti benchmark Lazio where the Biancolilla seems to be the main cultivar used. Two specific trends for Lazio samples are highlighted along north and south areas. A heavy-metal contamination by As is found in Sicilia representing a separated cluster in the PCA model. The Puglia samples are characterized by Ni, Fe and Ti. Nocellara and Biancolilla are the cultivars mainly used. The Zn, together with Ca characterized the investigated soils samples. Finally, monocultivar declared by local producers are almost never fulfilled.
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