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Authentication of Zhongning wolfberry with geographical indication by mineral profile
Author(s) -
Zhang Senshen,
Wei Yimin,
Wei Shuai,
Liu Hongyan,
Guo Boli
Publication year - 2017
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.13301
Subject(s) - principal component analysis , linear discriminant analysis , mineral , chemistry , inductively coupled plasma mass spectrometry , mathematics , analytical chemistry (journal) , geographical indication , mineralogy , authentication (law) , mass spectrometry , significant difference , statistics , chromatography , geography , organic chemistry , regional science , archaeology
Summary Zhongning wolfberry is a famous geographical indication ( GI ) in China. The concentrations of twenty elements (K, Mg, Fe, Ca, Zn, Cu, Mn, Al, Sr, Rb, Mo, Tb, Cd, Co, V, As, Cs, Pr, Dy and Gd) in samples were determined using inductively coupled plasma mass spectrometry. The data were subjected to analysis of variance, principal component analysis and linear discriminant analysis. The results indicated that nineteen minerals (except K) represented significant differences among regions. The correct classification rates of original group and cross‐validation of Zhongning wolfberry were 95.7% and 85.7%, for these nineteen variables. Furthermore, there was no significant difference for all variables in samples from three picking periods. It was feasible to distinguish Zhongning wolfberry based on mineral profiles with chemometric approaches, and the study could serve as a reference for the authentication of wolfberries and the prevention of deceptive labelling of other GI products.