基于稀土元素谱结合化学计量学鉴定来自埃格洛维（希腊莱夫卡达）的兵豆（Lens culinaris Medik）。

Identification of lentils (Lens culinaris Medik) from Eglouvi (Lefkada, Greece) based on rare earth elements profile combined with chemometrics.

机构信息

Horizontal Laboratory of Quality Control of Processes and Products, School of Chemical Engineering, National Technical University of Athens, Polytechniopolis Zografou, Iroon Polytechniou 9, 15780 Athens, Greece.

Laboratory of Inorganic and Analytical Chemistry, School of Chemical Engineering, National Technical University of Athens, Polytechniopolis Zografou, Iroon Polytechniou 9, 15780 Athens, Greece.

出版信息

Food Chem. 2024 Jul 30;447:138965. doi: 10.1016/j.foodchem.2024.138965. Epub 2024 Mar 7.

DOI:10.1016/j.foodchem.2024.138965

PMID:38513482

Abstract

An analytical approach has been developed to verify the authenticity of premium lentils originating from Eglouvi, Lefkada, Greece. The method relies on the digestion of samples followed by the analysis of their rare earth elements (REEs) content. Lentils originating from Eglouvi exhibit higher content in most REEs compared to lentils from other regions as well as distinct Sc/Y and Sc/Yb concentration ratios. Principal component analysis effectively segregates "Eglouvi" lentils into a distinct cluster. Soft Independent Modelling of Class Analogy (SIMCA) successfully models "Eglouvi" lentils. Significant enhancement in model specificity was achieved upon inclusion of Sc/Y and Sc/Yb concentration ratios as additional variables. The model is capable of detecting adulteration in blends of Eglouvi lentils, with a minimum rejection threshold of 4.6% w/w for Greek lentil adulterants and 6.0% w/w for imported lentil adulterants.

摘要

已经开发出一种分析方法来验证源自希腊莱夫卡达埃格卢维的优质扁豆的真实性。该方法依赖于样品的消化，然后分析其稀土元素 (REE) 含量。与来自其他地区的扁豆以及独特的 Sc/Y 和 Sc/Yb 浓度比相比，源自埃格卢维的扁豆在大多数 REE 中含量更高。主成分分析有效地将“埃格卢维”扁豆分为一个独特的聚类。软独立建模分类分析 (SIMCA) 成功地对“埃格卢维”扁豆进行了建模。在将 Sc/Y 和 Sc/Yb 浓度比作为附加变量包含在内后，显著提高了模型的特异性。该模型能够检测到“埃格卢维”扁豆混合物中的掺假，对于希腊扁豆掺杂物的最小拒绝阈值为 4.6%w/w，对于进口扁豆掺杂物的最小拒绝阈值为 6.0%w/w。