The commercialization of declared blends of olive oil and seed oil is something long approved by the European Union. There, the olive oil percentage must be at least 50% if the producer aims to advertise its presence on the front label, i.e., somewhere other than in the ingredients list. However, the Regulation did not propose any method to verify such proportion. For this purpose, we recommend the use of decisional trees, being the parameters under study those in which the greatest differences between olive and seed oils are shown: triacylglycerols, acyclic saturated hydrocarbons, free sterols, and tocopherols. In this way, to guarantee the presence of olive oil at 50%: i) palmitodiolein must be above 11-15%; ii) the ß/γ-tocopherol ratio must be below 2.4; iii) the alkane sum C21-C25 should be higher than 3.5-6%; and iv) the total sterol content cannot surpass 2400 mg/kg.

中文翻译：

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橄榄油混合物。第一部分：决策树或如何验证声明的混合物中橄榄油的百分比。

宣布的橄榄油和种子油混合物的商业化已获得欧盟长期认可。如果生产商打算在正面标签上宣传其存在，即在成分表之外的其他地方，则橄榄油在该处的百分比必须至少为50％。但是，该法规没有提出任何方法来验证该比例。为此，我们建议使用决策树，这是正在研究的参数，其中显示了橄榄油和种子油之间的最大差异：三酰基甘油，无环饱和烃，游离固醇和生育酚。通过这种方式，要保证橄榄油的含量为50％：i）棕榈二油精必须高于11-15％；ii）ß/γ-生育酚比必须低于2.4；iii）烷烃总和C21-C25应高于3.5-6％；