The headspace of six roasted Coffea arabica coffees, both brew and powder, of different geographical origins (Brazil, Ethiopia, Guatemala, Costa Rica, Colombia, and India) was analysed by Proton Transfer Reaction-Time of Flight-Mass Spectrometry. For the first time, in the case of coffee, a Switching Reagent Ion System has been used to produce different ionisation agents: H3O+, NO+ and O2+. Significant differences were found among volatile concentrations for the different origins both for powders and brews, in particular high concentrations of terpenes for Ethiopia, sulphur compounds for Colombia and thiazoles for Brazil and India. Effective classification models have been set for the different ionisation modes and data fusion of the data obtained by different reagent ions further reduced the classification errors

Yener, S.; Romano, A.; Cappellin, L.; Granitto, P.M.; Aprea, E.; Navarini, L.; Märk, T.D.; Gasperi, F.; Biasioli, F. (2015). Tracing coffee origin by direct injection headspace analysis with PTR/SRI-MS. FOOD RESEARCH INTERNATIONAL, 69: 235-243. doi: 10.1016/j.foodres.2014.12.046 handle: http://hdl.handle.net/10449/24733

Tracing coffee origin by direct injection headspace analysis with PTR/SRI-MS

Yener, Sine;Romano, Andrea;Cappellin, Luca;Aprea, Eugenio;Gasperi, Flavia;Biasioli, Franco
2015-01-01

Abstract

The headspace of six roasted Coffea arabica coffees, both brew and powder, of different geographical origins (Brazil, Ethiopia, Guatemala, Costa Rica, Colombia, and India) was analysed by Proton Transfer Reaction-Time of Flight-Mass Spectrometry. For the first time, in the case of coffee, a Switching Reagent Ion System has been used to produce different ionisation agents: H3O+, NO+ and O2+. Significant differences were found among volatile concentrations for the different origins both for powders and brews, in particular high concentrations of terpenes for Ethiopia, sulphur compounds for Colombia and thiazoles for Brazil and India. Effective classification models have been set for the different ionisation modes and data fusion of the data obtained by different reagent ions further reduced the classification errors
Geographic origin
Volatile compounds
Switchable reagent ions
Coffee brew
Coffee powder
Moka
Settore CHIM/10 - CHIMICA DEGLI ALIMENTI
2015
Yener, S.; Romano, A.; Cappellin, L.; Granitto, P.M.; Aprea, E.; Navarini, L.; Märk, T.D.; Gasperi, F.; Biasioli, F. (2015). Tracing coffee origin by direct injection headspace analysis with PTR/SRI-MS. FOOD RESEARCH INTERNATIONAL, 69: 235-243. doi: 10.1016/j.foodres.2014.12.046 handle: http://hdl.handle.net/10449/24733
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