Geographical Origin Identification of Tequila Based on Multielement and Stable Isotopes. (23rd June 2021)

• Record Type: Journal Article
• Authors: Zhang, Jian; Ma, Yiqian; Shao, Feilong; Lu, Yuanyu; Zhu, Libo; Xu, Xiansong
• Other Names: Cozzolino Daniel Academic Editor.
• Is Part Of: Journal of food quality. Volume 2021(2021)
• Publication Date: 2021-06-23
• Subjects: Food industry and trade -- Quality control -- Periodicals; Food industry and trade -- Standards -- Periodicals; Food -- Periodicals; 664.07
• DOI: 10.1155/2021/6615264
• Languages: English
• ISSNs: 0146-9428

Abstract

Abstract : To explore the regional characteristics of multielement and stable isotopes in tequila and the viability of tracing the geographical origin, both inductively coupled plasma mass spectrometry (ICP-MS) and stable isotope ratio mass spectrometry (IRMS) were applied in this study to determine the multielement content and stable isotope ratios of tequila. Then, principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) as chemometrics were conducted in combination to establish a model for determining the geographical origin of Mexican tequila. According to the analytical results, the content of 22 elements varied, as did the ranges of stable isotope δ 13 C and δ 18 O values for the tequila obtained from the 4 producing areas. Besides, there were regional characteristics shown to some extent. PCA and PLS-DA methods can be adopted to identify the geographical origin of tequila in Mexico. According to the discriminant verification of 16 samples, the accuracy of prediction reached 93.75%. It has been demonstrated that it is possible to distinguish tequila of different geographical origins in Mexico by combining the determination of the multielement content and stable isotope ratios with chemometric analysis, which lays a foundation for tracing the geographical origin of tequila.