Abstract：
:To test the potential of different analytical tools to determine the geographical origin of Ethiopian coffee, 103 green arabica coffee samples from four coffee regions in Ethiopia were subjected to multi-elements and δ13C, δ15N and δ18O determinations. Multi-elements were determined by using inductively coupled plasma (ICP)- and X-ray fluorescence spectrometry (XRF)-based techniques, and δ13C, δ15N and δ18O were determined by using elemental analyzer-isotope ratio mass spectrometry. Using linear discriminant analysis, XRF-based multi-elements with and without δ13C appeared to be most effective in discriminating the geographical origin of coffee, giving higher classification accuracy (89 and 86%, respectively) than ICP-based multi-elements with and without stable isotopes (80%, each). These results demonstrate the potential of XRF-based multi-element profiling as a relatively fast and low-cost tool to trace the geographical origin of Ethiopian coffee. All together this study offers the proof of concept for a promising method that, upon standardization, could be used for coffee provenance authentication and fraud detection.
journal_name
Food Chemjournal_title
Food chemistryauthors
Worku M,Upadhayay HR,Latruwe K,Taylor A,Blake W,Vanhaecke F,Duchateau L,Boeckx Pdoi
10.1016/j.foodchem.2019.03.135subject
Has Abstractpub_date
2019-08-30 00:00:00pages
295-307eissn
0308-8146issn
1873-7072pii
S0308-8146(19)30620-Xjournal_volume
290pub_type
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