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Fischer, M. ; Wohlfahrt, S. ; Varga, J. ; Saraji-Bozorgzad, M.* ; Matuschek, G. ; Denner, T.* ; Zimmermann, R.

Evolved gas analysis by single photon ionization-mass spectrometry.

J. Therm. Anal. Calorim. 116, 1461-1469 (2014)
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The applicability of thermogravimetry (TG) coupled to single photon ionization time-of-flight mass spectrometry (TG-SPI-TOFMS) for evolved gas analysis (EGA) of coffee is demonstrated in this study. Coffee is a chemically well-known complex food product of large scientific and commercial interest. The roasting process of single green coffee beans (Arabica, Robusta) was simulated in the TG-SPI-TOFMS device, and the chemical composition of the evolved roasting gases was monitored on-line. Additionally, roasted and ground coffee powders of different types and brands as well as instant coffee were successfully investigated. For example, the diterpenes cafestol and kahweol can be detected among many other roasting products. These compounds can be of particular interest for quality control of coffee. It is shown that kahweol can be used as a tracer compound to discriminate arabica coffee species from robusta species.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Evolved Gas Analysis ; Thermal Analysis ; Single Photon Ionization ; Kahweol ; Cafestol; Enhanced Multiphoton Ionization; Photoionization Methods; Thermal-decomposition; Roasting Process; Online Analysis; Excimer Light; Coffee Beans; Crude Oils; Thermogravimetry; Chromatography
Language english
Publication Year 2014
HGF-reported in Year 2014
ISSN (print) / ISBN 1388-6150
e-ISSN 1588-2926
Journal Journal of Thermal Analysis and Calorimetry
Quellenangaben Volume: 116, Issue: 3, Pages: 1461-1469 Article Number: , Supplement: ,
Publisher Springer
Publishing Place Dordrecht
Reviewing status Peer reviewed
Institute(s) Cooperation Group Comprehensive Molecular Analytics (CMA)
POF-Topic(s) 30202 - Environmental Health
Research field(s) Environmental Sciences
PSP Element(s) G-504500-001
DOI 10.1007/s10973-014-3830-3
WOS ID WOS:000336283600044
Scopus ID 84901409353
Erfassungsdatum 2014-06-23
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