Cocoa is a high-value commodity that appeals to the consumer's taste, but it is also renowned for its antioxidant and healthy properties. Many of these characteristics as well as flavour and its economic value depend on the geographic origin. This work reports the content of 56 macro-, micro- and trace-elements of 61 cocoa beans produced in 23 countries of East and West Africa, Asia and Central and South America using ICP-MS and tests the efficacy and robustness of a new chemometric approach of geographic traceability developed on the base of elemental profiles. The model based on the 29 elements (Ag, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Cs, Cu, Fe, Ga, Hg, K, Li, Mg, Mn, Na, Ni, P, Rb, Se, Sr, Th, Tl, U, Y and Zn) indicated as the more predictive by the Discriminant Analysis provided an optimal discrimination among the 5 subcontinental origins, achieving 100% of correct re-classification. The model was cross-validated with satisfactory results (>85% correct reclassification). Finally, interesting opportunities were pointed out by the satisfactory application of this model in tracing back the subcontinental origin of 13 commercial samples of dark chocolate (77% correct reclassification)

Bertoldi, D.; Barbero, A.; Camin, F.; Caligiani, A.; Larcher, R. (2016). Multielemental fingerprinting and geographic traceability of Theobroma cacao beans and cocoa products. FOOD CONTROL, 65: 46-53. doi: 10.1016/j.foodcont.2016.01.013 handle: http://hdl.handle.net/10449/28566

Multielemental fingerprinting and geographic traceability of Theobroma cacao beans and cocoa products

Bertoldi, Daniela;Camin, Federica;Larcher, Roberto
2016-01-01

Abstract

Cocoa is a high-value commodity that appeals to the consumer's taste, but it is also renowned for its antioxidant and healthy properties. Many of these characteristics as well as flavour and its economic value depend on the geographic origin. This work reports the content of 56 macro-, micro- and trace-elements of 61 cocoa beans produced in 23 countries of East and West Africa, Asia and Central and South America using ICP-MS and tests the efficacy and robustness of a new chemometric approach of geographic traceability developed on the base of elemental profiles. The model based on the 29 elements (Ag, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Cs, Cu, Fe, Ga, Hg, K, Li, Mg, Mn, Na, Ni, P, Rb, Se, Sr, Th, Tl, U, Y and Zn) indicated as the more predictive by the Discriminant Analysis provided an optimal discrimination among the 5 subcontinental origins, achieving 100% of correct re-classification. The model was cross-validated with satisfactory results (>85% correct reclassification). Finally, interesting opportunities were pointed out by the satisfactory application of this model in tracing back the subcontinental origin of 13 commercial samples of dark chocolate (77% correct reclassification)
Cocoa bean
Dark chocolate
ICP-MS
Elemental profile
Geographic origin
Settore CHIM/10 - CHIMICA DEGLI ALIMENTI
2016
Bertoldi, D.; Barbero, A.; Camin, F.; Caligiani, A.; Larcher, R. (2016). Multielemental fingerprinting and geographic traceability of Theobroma cacao beans and cocoa products. FOOD CONTROL, 65: 46-53. doi: 10.1016/j.foodcont.2016.01.013 handle: http://hdl.handle.net/10449/28566
File in questo prodotto:
File Dimensione Formato  
2016 FC Bertoldi et al.pdf

solo utenti autorizzati

Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 552.46 kB
Formato Adobe PDF
552.46 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10449/28566
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 113
  • ???jsp.display-item.citation.isi??? 104
social impact