Czech J. Food Sci., 2019, 37(5):374-382 | DOI: 10.17221/270/2018-CJFS

Characterisation of flaxseed cultivars based on NIR diffusion reflectance spectra of whole seeds and derived samplesFood Analysis, Food Quality and Nutrition

Yana Troshchynska*,1,2, Roman Bleha2, Lenka Kumbarová2, Marcela Sluková2, Andrej Sinica2, Jiří Štětina1
1 Department of Dairy, Fat and Cosmetics, Faculty of Food and Biochemical Technology, University of Chemistry and Technology in Prague, Prague, Czech Republic
2 Department of Carbohydrates and Cereals, Faculty of Food and Biochemical Technology, University of Chemistry and Technology in Prague, Prague, Czech Republic

Discrimination of yellow and brown flaxseed cultivars was made based on diffusion reflectance FT-NIR spectra of whole seeds. The spectra of flaxseed kernels, hulls, defatted flours, and oils were also measured for comparison. Hierarchy cluster analysis (HCA) and principal component analysis (PCA) were used for the discrimination. Multivariate analyses of FT-NIR spectra led to satisfactory discrimination of all flaxseed cultivars of this study mainly according to the nutritionally important fatty acid composition that was confirmed by comparison with the corresponding spectra of flaxseed kernel and oil. By contrast, spectral features of proteins, polysaccharides, and tannins predominated in the FT-NIR spectra of flaxseed hulls and defatted flours.

Keywords: crop seed composition; multivariate analyses; vibration spectroscopy

Published: October 31, 2019  Show citation

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Troshchynska Y, Bleha R, Kumbarová L, Sluková M, Sinica A, Štětina J. Characterisation of flaxseed cultivars based on NIR diffusion reflectance spectra of whole seeds and derived samples. Czech J. Food Sci. 2019;37(5):374-382. doi: 10.17221/270/2018-CJFS.
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