Zakraoui Mariem, Hannachi Hédia, Pasković Igor, Vidović Nikolina, Polić Pasković Marija, Palčić Igor, Major Nikola, Goreta Ban Smiljana, Hamrouni Lamia
Laboratory of Management and Valorization of Forest Resources, National Researches Institute of Water, Forests and Rural Engineering, University of Carthage, Ariana 2080, Tunisia.
Faculty of Sciences of Tunis, University of El Manar, Tunis 2092, Tunisia.
Foods. 2023 Jun 30;12(13):2565. doi: 10.3390/foods12132565.
In this study, we investigated the influence of pedological parameters and variation of altitude on the mineral nutrients, phenolic compounds, and antioxidant activities of olive leaves. Samples of the Chetoui cultivar were collected from eight geographical locations with different altitudes. Levels of phenolic compounds varied according to the altitude. Classification of the locations revealed that altitude 1 (>500 m) was characterized by high levels of secoiridoids and simple phenols, while altitude 2 (500-300 m) and altitude 3 (<300 m) were higher in flavonoids. Levels of Mn, Ca and B in the leaves and level of Zn in the soil were significantly correlated with the abundance of oleuropein and luteolin-7- glucoside, the most important phenols in Chetoui olive leaves. The results suggest that, in addition to pedological criteria, environmental conditions also influence the formation of phenolic compounds.
在本研究中，我们调查了土壤学参数和海拔变化对橄榄叶矿物质营养、酚类化合物及抗氧化活性的影响。从八个不同海拔的地理位置采集了谢图伊品种的样本。酚类化合物的含量随海拔而变化。对这些地点的分类显示，海拔1（>500米）的特征是裂环烯醚萜类化合物和简单酚类含量较高，而海拔2（500 - 300米）和海拔3（<300米）的黄酮类化合物含量较高。叶片中的锰、钙和硼含量以及土壤中的锌含量与橄榄苦苷和木犀草素 - 7 - 葡萄糖苷（谢图伊橄榄叶中最重要的酚类）的含量显著相关。结果表明，除了土壤学标准外，环境条件也会影响酚类化合物的形成。
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