In the coffee sector a diversity of certifications is available, with the most well-known being organic and fair trade. Intrinsic markers of products may help to assure the authenticity of food products and complement administrative controls. In the present study 110 market coffees with special production traits were characterized by high sensitivity proton transfer reaction mass spectrometry (HS PTR-MS) and volatiles were tentatively identified by PTR-time of flight MS. Espresso coffees, Kopi Luwak coffee and organic coffees could be distinguished by their profiles of volatile compounds with the help of chemometrics. A PLS-DA classification model was estimated to classify the organic and regular coffees by their HS PTR-MS mass spectra. Cross validation showed correct prediction of 42 out of the 43 (98%) organic coffee samples and 63 out of the 67 (95%) regular coffee samples. Therefore, the presented strategy is a promising approach to rapid organic coffee authentication

Özdestan, Ö.; van Ruth, S.; Alewijn, M.; Knoot, A.; Romano, A.; Cappellin, L.; Biasioli, F. (2013). Differentiation of specialty coffees by proton transfer reaction-mass spectrometry. FOOD RESEARCH INTERNATIONAL, 53 (1): 433-439. doi: 10.1016/j.foodres.2013.05.013 handle: http://hdl.handle.net/10449/23204

Differentiation of specialty coffees by proton transfer reaction-mass spectrometry

Romano, Andrea;Cappellin, Luca;Biasioli, Franco
2013-01-01

Abstract

In the coffee sector a diversity of certifications is available, with the most well-known being organic and fair trade. Intrinsic markers of products may help to assure the authenticity of food products and complement administrative controls. In the present study 110 market coffees with special production traits were characterized by high sensitivity proton transfer reaction mass spectrometry (HS PTR-MS) and volatiles were tentatively identified by PTR-time of flight MS. Espresso coffees, Kopi Luwak coffee and organic coffees could be distinguished by their profiles of volatile compounds with the help of chemometrics. A PLS-DA classification model was estimated to classify the organic and regular coffees by their HS PTR-MS mass spectra. Cross validation showed correct prediction of 42 out of the 43 (98%) organic coffee samples and 63 out of the 67 (95%) regular coffee samples. Therefore, the presented strategy is a promising approach to rapid organic coffee authentication
Chemometrics
Civet coffee
Fair trade
Kopi Luwak
Organic
PTR-MS
Settore CHIM/10 - CHIMICA DEGLI ALIMENTI
2013
Özdestan, Ö.; van Ruth, S.; Alewijn, M.; Knoot, A.; Romano, A.; Cappellin, L.; Biasioli, F. (2013). Differentiation of specialty coffees by proton transfer reaction-mass spectrometry. FOOD RESEARCH INTERNATIONAL, 53 (1): 433-439. doi: 10.1016/j.foodres.2013.05.013 handle: http://hdl.handle.net/10449/23204
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