Physico-elemental analysis of roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico using X-ray micro-computed tomography and external beam particle induced X-ray emission
The physico-elemental profiles of commercially attained and roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico were compared using light microscopy, X-ray micro-computed tomography, and external beam particle induced X-ray emission. External beam PIXE analysis detected P, S,...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-06-01
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| Series: | Food Chemistry: X |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590157519300343 |
| _version_ | 1818952387236200448 |
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| author | Karen J. Cloete Žiga Šmit Roya Minnis-Ndimba Primož Vavpetič Anton du Plessis Stephan G. le Roux Primož Pelicon |
| author_facet | Karen J. Cloete Žiga Šmit Roya Minnis-Ndimba Primož Vavpetič Anton du Plessis Stephan G. le Roux Primož Pelicon |
| author_sort | Karen J. Cloete |
| collection | DOAJ |
| description | The physico-elemental profiles of commercially attained and roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico were compared using light microscopy, X-ray micro-computed tomography, and external beam particle induced X-ray emission. External beam PIXE analysis detected P, S, Cl, K, Ca, Ti, Mn, Fe, Cu, Zn, Br, Rb, and Sr in samples. Linear discriminant analysis showed that there was no strong association between elemental data and production region, whilst a heatmap combined with hierarchical clustering showed that soil-plant physico-chemical properties may influence regional elemental signatures. Physical trait data showed that Mexican coffee beans weighed significantly more than beans from other regions, whilst Honduras beans had the highest width. X-ray micro-computed tomography qualitative data showed heterogeneous microstructural features within and between beans representing different regions. In conclusion, such multi-dimensional analysis may present a promising tool in assessing the nutritional content and qualitative characteristics of food products such as coffee. Keywords: Ethiopia, Colombia, Honduras, External beam PIXE, Mexico, Organic, Roasted coffee bean, X-ray micro-computed tomography |
| first_indexed | 2024-12-20T09:49:34Z |
| format | Article |
| id | doaj.art-06d90ce3c6c84adcba3b405ebf2f0167 |
| institution | Directory Open Access Journal |
| issn | 2590-1575 |
| language | English |
| last_indexed | 2024-12-20T09:49:34Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Food Chemistry: X |
| spelling | doaj.art-06d90ce3c6c84adcba3b405ebf2f01672022-12-21T19:44:37ZengElsevierFood Chemistry: X2590-15752019-06-012Physico-elemental analysis of roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico using X-ray micro-computed tomography and external beam particle induced X-ray emissionKaren J. Cloete0Žiga Šmit1Roya Minnis-Ndimba2Primož Vavpetič3Anton du Plessis4Stephan G. le Roux5Primož Pelicon6iThemba Laboratory for Accelerator Based Sciences, National Research Foundation, PO Box 722, Somerset West 7129, South Africa; Corresponding author.Jožef Stefan Institute, Jamova cesta 39, SI-1001 Ljubljana, Slovenia; Faculty of Mathematics and Physics, University of Ljubljana, Jadranska ulica, 19, SI-1000 Ljubljana, SloveniaiThemba Laboratory for Accelerator Based Sciences, National Research Foundation, PO Box 722, Somerset West 7129, South AfricaJožef Stefan Institute, Jamova cesta 39, SI-1001 Ljubljana, SloveniaCT Scanner Facility, Central Analytical Facilities, Stellenbosch University, Private Bag X1, Matieland, Stellenbosch 7602, South AfricaCT Scanner Facility, Central Analytical Facilities, Stellenbosch University, Private Bag X1, Matieland, Stellenbosch 7602, South AfricaJožef Stefan Institute, Jamova cesta 39, SI-1001 Ljubljana, SloveniaThe physico-elemental profiles of commercially attained and roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico were compared using light microscopy, X-ray micro-computed tomography, and external beam particle induced X-ray emission. External beam PIXE analysis detected P, S, Cl, K, Ca, Ti, Mn, Fe, Cu, Zn, Br, Rb, and Sr in samples. Linear discriminant analysis showed that there was no strong association between elemental data and production region, whilst a heatmap combined with hierarchical clustering showed that soil-plant physico-chemical properties may influence regional elemental signatures. Physical trait data showed that Mexican coffee beans weighed significantly more than beans from other regions, whilst Honduras beans had the highest width. X-ray micro-computed tomography qualitative data showed heterogeneous microstructural features within and between beans representing different regions. In conclusion, such multi-dimensional analysis may present a promising tool in assessing the nutritional content and qualitative characteristics of food products such as coffee. Keywords: Ethiopia, Colombia, Honduras, External beam PIXE, Mexico, Organic, Roasted coffee bean, X-ray micro-computed tomographyhttp://www.sciencedirect.com/science/article/pii/S2590157519300343 |
| spellingShingle | Karen J. Cloete Žiga Šmit Roya Minnis-Ndimba Primož Vavpetič Anton du Plessis Stephan G. le Roux Primož Pelicon Physico-elemental analysis of roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico using X-ray micro-computed tomography and external beam particle induced X-ray emission Food Chemistry: X |
| title | Physico-elemental analysis of roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico using X-ray micro-computed tomography and external beam particle induced X-ray emission |
| title_full | Physico-elemental analysis of roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico using X-ray micro-computed tomography and external beam particle induced X-ray emission |
| title_fullStr | Physico-elemental analysis of roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico using X-ray micro-computed tomography and external beam particle induced X-ray emission |
| title_full_unstemmed | Physico-elemental analysis of roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico using X-ray micro-computed tomography and external beam particle induced X-ray emission |
| title_short | Physico-elemental analysis of roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico using X-ray micro-computed tomography and external beam particle induced X-ray emission |
| title_sort | physico elemental analysis of roasted organic coffee beans from ethiopia colombia honduras and mexico using x ray micro computed tomography and external beam particle induced x ray emission |
| url | http://www.sciencedirect.com/science/article/pii/S2590157519300343 |
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