Ruđer Bošković Institute, Bijenička Cesta 54, Zagreb 10000, Croatia.
Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, Split 21000, Croatia; Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska 25, Zagreb 10000, Croatia.
Food Chem. 2023 Oct 30;424:136401. doi: 10.1016/j.foodchem.2023.136401. Epub 2023 May 19.
A capacity to determine the provenance of high-value food products is of high scientific and economic interest. With the aim to develop a tool for geographical traceability of Croatian extra virgin olive oils (EVOO), multielement composition and C/C isotope ratio in EVOO as well as the geochemistry of the associated soils were analysed in samples collected from three regions along the Croatian Adriatic coast. Soil geochemistry was shown to influence the transfer and elemental composition of EVOO. The most discriminating variables to distinguish EVOO from different regions were S, Mo, Rb, Mg, Pb, Mn, Sn, K, V and δC. The predictive models achieved high sensitivity and specificity, especially when carbon isotope composition was added. The results suggest that interregional geographical traceability of Croatian EVOO is possible based on matching their multielement composition with that of the soils in the provenance area.
确定高价值食品产地的能力具有很高的科学和经济意义。本研究旨在开发一种用于地理溯源克罗地亚特级初榨橄榄油（EVOO）的工具，对采集自克罗地亚亚得里亚海沿岸三个地区的 EVOO 样本进行了多元素组成和 C/C 同位素比值以及相关土壤地球化学分析。研究表明，土壤地球化学会影响 EVOO 的迁移和元素组成。用于区分 EVOO 不同产地的最具判别力的变量为 S、Mo、Rb、Mg、Pb、Mn、Sn、K、V 和 δC。当加入碳同位素组成后，预测模型的灵敏度和特异性都很高。研究结果表明，通过将克罗地亚 EVOO 的多元素组成与产地土壤的元素组成相匹配，实现其跨地区的地理溯源是可行的。
