Metal(loid)s Profile of Four Traditional Ethiopian Teff Brands: Geographic Origin Discrimination.

Autor: Woldetsadik D; Department of Soil and Water Resources Management, Wollo University, Dessie, Ethiopia. desta.woldetsadik@wu.edu.et., Sims DB; College of Southern Nevada, Las Vegas, NV, USA. douglas.sims@csn.edu., Garner MC; College of Southern Nevada, Las Vegas, NV, USA., Hailu H; Department of Soil and Water Resources Management, Wollo University, Dessie, Ethiopia.
Jazyk: angličtina
Zdroj: Biological trace element research [Biol Trace Elem Res] 2024 Mar; Vol. 202 (3), pp. 1305-1315. Date of Electronic Publication: 2023 Jun 28.
DOI: 10.1007/s12011-023-03736-7
Abstrakt: Among the most renowned Ethiopian food crops, teff (Eragrostis tef (Zucc.)Trotter) is the most nutritious and gluten-free cereal. Because of the increase in demand for teff, it is necessary to establish geographic origin authentication of traditional teff brands based on multi-element fingerprint. For this purpose, a total of 60 teff samples were analysed using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Accuracy of the laboratory procedure was verified by the analysis of rice flour standard reference material (NIST SRM 1568b). In this context, four traditional teff brands (Ada'a, Ginchi, Gojam and Tulu Bolo) were analytically characterized using multi-element fingerprint and further treated statistically using linear discriminant analysis (LDA). Due to obvious extrinsic Fe, Al and V contamination, these elements were excluded from the discriminant model. Five elements (Cu, Mo, Se, Sr, and Zn) significantly contributed to discriminate the geographical origin of white teff. On the other hand, Mn, Mo, Se and Sr were used as discriminant variables for brown teff. LDA revealed 90 and 100% correct classifications for white and brown teff, respectively. Overall, multi-element fingerprint coupled with LDA can be considered a suitable tool for geographic origin discrimination of traditional teff brands.
(© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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