论文标题
“对具有不同地理起源的原始橄榄油的歧视：基于挥发性化合物的快速无靶标的方法”
"Discrimination of virgin olive oils with different geographical origin: a rapid untargeted chromatographic approach based on volatile compounds"
论文作者
论文摘要
许多研究表明，地理起源是选择橄榄油最大的因素之一。为了避免误导性，欧洲法规已经建立了特定的规则，以在产品标签上报告特级初榨橄榄油和初榨橄榄油的地理起源，但是尚未确定验证此信息的官方分析程序。在这项工作中，提出了一种用于确定挥发性化合物的非靶向方法，然后是化学计量数据详细说明，根据其地理位置（欧盟和欧盟）来区分EVOO和VOOS。分析了一组210个样品，并使用了两种不同的分类技术，一种线性和一个非线性。还使用外部数据集对这两个模型进行了验证。两种化学计量方法都获得了令人满意的结果：考虑到PLS-DA，分别为89％和81％的欧盟和81％的欧盟样本，已正确分类；对于ANN，百分比分别为93％和89％。这些结果证实了该方法的可靠性，作为根据其地理出处来区分Evoos和VOOS的快速方法。
Many studies have shown that the geographic origin is one of the most influencing factors in the choice of olive oil. To avoid misleading, European regulation has established specific rules to report the geographical origin of extra virgin and virgin olive oils on the product label, but an official analytical procedure to verify this information has not been yet defined. In this work, a flash gas chromatography untargeted approach for determination of volatile compounds, followed by a chemometric data elaboration, is proposed for discrimination of EVOOs and VOOs according to their geographical origin (EU and Extra-EU). A set of 210 samples was analyzed and two different classification techniques were used, one linear and one non-linear. The two models were also validated using an external data set. Satisfactory results were obtained for both chemometric approaches: considering the PLS-DA, 89% and 81% of EU and Extra-EU samples, respectively, were correctly classified; for ANN the percentages were 93% and 89%, respectively. These results confirm the reliability of the method as a rapid approach to discriminate EVOOs and VOOs according to their geographical provenance.
