Issue 21, 2013

Coffee origin discrimination by paper spray mass spectrometry and direct coffee spray analysis

Abstract

Here we explore the application of the ambient ionization technique paper spray mass spectrometry (PS-MS) combined with the multivariate statistical tools principal component analysis and hierarchical cluster analysis as a fast and simple method to discriminate green arabica coffee beans from three different origins in Brazil. PS-MS does not require nebulizing gas or complex protocols for sample preparation and by the analysis of 5 μL of whole coffee bean extracts it was possible to discriminate the coffee origin. Furthermore, we report the direct analysis of a single coffee bean using a bean slice as the sample and also the substrate for electrospray ionization.

Graphical abstract: Coffee origin discrimination by paper spray mass spectrometry and direct coffee spray analysis

Article information

Article type
Paper
Submitted
24 Jul 2013
Accepted
30 Aug 2013
First published
02 Sep 2013

Anal. Methods, 2013,5, 5944-5948

Coffee origin discrimination by paper spray mass spectrometry and direct coffee spray analysis

R. Garrett, C. M. Rezende and D. R. Ifa, Anal. Methods, 2013, 5, 5944 DOI: 10.1039/C3AY41247D

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