Ingallina Cinzia, Cerreto Antonella, Mannina Luisa, Circi Simone, Vista Silvia, Capitani Donatella, Spano Mattia, Sobolev Anatoly P, Marini Federico
Dipartimento di Chimica e Tecnologia del Farmaco, Sapienza Università di Roma, 00185 Roma, Italy.
Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica "Annalaura Segre", CNR, Monterotondo 00015, Roma, Italy.
Metabolites. 2019 Apr 3;9(4):65. doi: 10.3390/metabo9040065.
Extra-virgin olive oil (383 samples; EVOOs) of three consecutive harvesting years from nine Italian regions were collected and submitted to an ¹H NMR-chemometric protocol to characterize the samples according to their origin (geographical area and variety). A more complete assignment of the olive oil ¹H spectrum in CDCl₃ and DMSO₆ was reported identifying 24-methylencycolartanol. A single classification model provided the discrimination of EVOOs among the three geographical macro-areas (North, Islands, Center-South), whereas a hierarchical approach based on breaking the overall classification problem into a series of smaller linear discriminant analysis (LDA) sub-models was tested to differentiate olive oils according to their geographical regions. Specific compounds responsible for olive oil characterization were identified.
收集了来自意大利九个地区连续三个收获年份的特级初榨橄榄油（383个样本；EVOOs），并将其提交至¹H NMR化学计量学方案，以根据样本的产地（地理区域和品种）对其进行表征。报告了在CDCl₃和DMSO₆中对橄榄油¹H谱更完整的归属，鉴定出24-亚甲基环阿尔廷醇。一个单一的分类模型实现了对三个地理大区（北部、岛屿、中南部）的特级初榨橄榄油的区分，同时测试了一种基于将整体分类问题分解为一系列较小的线性判别分析（LDA）子模型的分层方法，以根据地理区域区分橄榄油。确定了负责橄榄油表征的特定化合物。
