Application of infrared spectroscopy to the assessment of authenticity of tea

Diffusion reflectance fourier transform infrared spectroscopy in the mid-IR region was used to assess the authenticity of tea varieties. The differences between the spectra of 12 different tea varieties (seven black, two green, three semifermented grades) were sufficient to allow their discriminatio...

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Bibliographic Details
Published in:Talanta (Oxford) 1998-10, Vol.47 (2), p.255-260
Main Authors: Budı́nová, G, Vláčil, D, Mestek, O, Volka, K
Format: Article
Language:English
Subjects:
Biological and medical sciences
Coffee, tea and other stimulative beverage industries
Food industries
Fundamental and applied biological sciences. Psychology
Infrared spectroscopy
Linear discriminant analysis
Soft independent modelling of class analogy
Tea
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Summary:Diffusion reflectance fourier transform infrared spectroscopy in the mid-IR region was used to assess the authenticity of tea varieties. The differences between the spectra of 12 different tea varieties (seven black, two green, three semifermented grades) were sufficient to allow their discrimination by the soft independent modelling of class analogy classification method or linear discriminant analysis, despite a significant heterogeneity of the samples as revealed by variance analysis.
ISSN:0039-9140
1873-3573
DOI:10.1016/S0039-9140(98)00055-1