Abstract
The contents of Ca, Cu, Fe, K, Mg, Mn, Na and Zn have been determined in green coffee beans from Brazil, Colombia and Mexico by means of inductively coupled plasma optical emission spectrometry. The concentrations of these elements were used to differentiate the coffee provenance. Kruskal–Wallis test highlighted significant differences between elemental contents from the three origins, and principal component analysis showed trends of samples to appear separately. Supervised pattern recognition techniques, such as linear discriminant analysis and soft independent modeling of class analogy, were used to obtain models allowing the geographical authentication of coffee samples with high reliability. Prediction abilities of 97 and 94 % were respectively obtained.
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Akamine T, Otaka A, Hokura A, Ito Y, Nakai I (2010) Bunseki Kagaku 59:863
Alonso-Salces RM, Serra F, Reniero F, Héberger K (2009) J Agric Food Chem 57:4224
Anderson KA, Smith BW (2002) J Agric Food Chem 50:2068
Barham BL, Weber JG (2012) World Dev 40:1269
Bertrand B, Villareal D, Laffargue A, Posada H, Lashermes P, Dussert S, Agric J (2008) Food Chem 56:2273
Carrera F, Leon-Camacho M, Pablos F, Gonzalez AG (1998) Anal Chim Acta 370:131
Choi MY, Choi W, Park JH, Lim J, Kwon SW (2010) Food Chem 121:1260
Cuadros L, García AM, Bosque JM (1996) Anal Lett 29:1231
El-Abassy RM, Donfack P, Materny A (2011) Food Chem 126:1443
Esteban-Díez I, González-Sáiz JM, Sáenz-González C, Pizarro C (2007) Talanta 71:221
Fernandes AP, Santos MC, Lemos SG, Ferreira MMC, Nogueira ARA, Nobrega JA (2005) Spectrochim Acta B 60:717
Forina M, Armanino C, Leardi R, Drava G (1991) J Chemometr 5:435
González AG, Herrador MA, Asuero AG (2005) Talanta 65:1022
Horwitz W (1982) Anal Chem 54:67A
International Coffee Organization (2012a) Monthly Coffee Market Report–August 2012. http://dev.ico.org/documents/cmr-0812-e.pdf. Accessed Sept 2012
International Coffee Organization (2012b) ICO daily indicator prices, http://www.ico.org/prices/p1.htm. Accessed Sept 2012
International Organization of Standardization (1994) International Organization of Standardization ISO 11294. International Organization of Standardization, Geneva
Jolliffe IT (2002) Principal components analysis, 2. Springer, New York
Jurado JM, Martín MJ, Pablos F, Moreda-Piñeiro A, Bermejo-Barrera P (2007) Food Chem 101:1296
Keidel A, von Stetten D, Rodrigues C, Maguas C, Peter H (2010) J Agric Food Chem 58:11187
Kott PS, Off J (2001) Stat 17:521
Martin MJ, Pablos F, Gonzalez AG (1998a) Talanta 46:1259
Martin MJ, Pablos F, Gonzalez AG (1998b) Anal Chim Acta 358:177
Martin MJ, Pablos F, Gonzalez AG (1999) Food Chem 66:365
Martin MJ, Pablos F, Gonzalez AG, Valdenebro MS, Leon-Camacho M (2001) Talanta 54:291
Massart DL (1998) Handbook of chemometrics and qualimetrics. Part B. Elsevier, Amsterdam
Muth J (1999) Basic statistic and pharmaceutical statistical applications. Marcel Dekker, New York
Nestel D (1995) Ecol l Econ 15:165
Risticevic S, Carasek E, Pawliszyn J (2008) Anal Chim Acta 617:72
Santato A, Bertoldi D, Perini M, Camin F, Larcher R (2012) J Mass Spectrom 47:1132
Valdenebro MS, León-Camacho M, Pablos F, Gonzalez AG, Martin MJ (1999) Analyst 124:999
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This work has been partially supported by Project 173591 from the Government of Mexico (CONACyT).
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Muñiz-Valencia, R., Jurado, J.M., Ceballos-Magaña, S.G. et al. Geographical Differentiation of Green Coffees According to Their Metal Content by Means of Supervised Pattern Recognition Techniques. Food Anal. Methods 6, 1271–1277 (2013). https://doi.org/10.1007/s12161-012-9538-8
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DOI: https://doi.org/10.1007/s12161-012-9538-8