Tocopherols are compounds with high biological activity, beneficial for human health that can be found in vegetable oils like olive oil, contributing for its resistance to oxidation. In this work, the tocopherol contents of olive oils extracted from centenarian olive trees of six cultivars (cvs. Lentisca, Madural, Rebolã, Redondal, Verdeal, and Verdeal Transmontana) were evaluated during five consecutive crop seasons (2013–2017). Three tocopherol isoforms (α‐, β‐ and γ‐tocopherols) were detected in all analyzed olive oils, and their content varied significantly with the cultivar and year of production. The highest amounts were found in cv. Lentisca (456 ± 122 mg/kg olive oil), while the lowest were observed in cv. Verdeal (179 ± 45 mg/kg olive oil). Crop year was the most influential factor, with the highest contents observed in 2013 and lowest in 2014. Principal component analysis and hierarchical clustering analysis helped differentiate olive oils according to cultivar or production year. These data suggest that tocopherol composition may serve as a chemical marker to distinguish the subject cultivar olive oils from centenarian trees either by olive cultivar or by crop year, being some cultivars identified as potential candidates for guaranteeing the production of olive oils rich in these compounds.

中文翻译：

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GxE对非常古老且遗传多样的橄榄树油中生育酚成分的影响

生育酚是具有高生物活性的化合物，对人体健康有益，可以在植物油（如橄榄油）中找到，有助于其抗氧化。在这项工作中，在六个连续的种植季节（2013-2017年）中评估了从六个品种（Cvs。Lentisca，Madural，Rebolã，Redondal，Verdeal和Verdeal Transmontana）的百年橄榄树提取的橄榄油中的生育酚含量。在所有分析过的橄榄油中检测到三种生育酚同工型（α-，β-和γ-生育酚），它们的含量随品种和生产年份的不同而有很大差异。在简历中发现的数量最多。Lentisca（456±122 mg / kg橄榄油），而在cv中观察到最低。Verdeal（179±45 mg / kg橄榄油）。作物年度是最有影响力的因素，含量最高的年份是2013年，最低的年份是2014年。主成分分析和层次聚类分析有助于按品种或生产年份区分橄榄油。这些数据表明，生育酚组成可以用作化学标记，以区分按橄榄栽培品种或按作物年份将本品种栽培橄榄油与百年纪念树区别开来，因为某些品种被确定为保证富含这些化合物的橄榄油生产的潜在候选者。