Journal
FOOD CHEMISTRY
Volume 374, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.131713
Keywords
Tea; Chemometric analysis; Geographical authentication; Influencing factors; Mineral elements; Stable isotopes; Metabolites
Funding
- Research on Construction of Fingerprint Library of Geographical Indication Agricultural Products and Application of Blockchain Traceability Technology in Anhui Province [18030701203]
- National Key Research and Development Program of China [2019YFD1001601]
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Tea, a significant beverage traded globally, can be authenticated using instrumental and chemometric methods. Analyzing isotope and mineral element contents helps determine the origin of tea, while chemometric analysis, particularly PCA and LDA, is valuable for processing data effectively.
Tea is one of the most important beverages worldwide, is produced in several distinct geographical regions, and is traded on the global market. The ability to determine the geographical origin of tea products helps to ensure authenticity and traceability. This paper reviews the recent research on authentication of tea using a combination of instrumental and chemometric methods. To determine the production region of a tea sample, instrumental methods based on analyzing isotope and mineral element contents are suitable because they are less affected by tea variety and processing methods. Chemometric analysis has proven to be a valuable method to identify tea. Principal component analysis (PCA) and linear discriminant analysis (LDA) are the most preferred methods for processing large amounts of data obtained through instrumental component analysis.
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