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dc.contributor.authorWieland, Flurin-
dc.contributor.authorGlöss, Alexia-
dc.contributor.authorKeller, Marco-
dc.contributor.authorSchenker, Stefan-
dc.contributor.authorYeretzian, Chahan-
dc.date.accessioned2018-04-24T14:11:03Z-
dc.date.available2018-04-24T14:11:03Z-
dc.date.issued2012-
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/5511-
dc.description.abstractThe flavour of a freshly prepared cup of coffee is the final expression of a long chain of transformations. Along this journey from the seed to the cup, roasting is without doubt the most significant processing step. Here we report on the development of a fast on-line process control technology for a consistent roast, batch after batch. It involves the on-line monitoring of the roaster off-gas using Proton-Transfer-Reaction Time-of-Flight Mass-Spectrometry (PTR-ToF-MS) and the analysis of the mass spectral profiles via principle component analysis (PCA). This allows predicting the roast degree in real time. The PCA was calibrated in advance with a large number of roasting trials, to develop the predictive model. The 3D space of the three first principal components allows to predict in real time the roast degree, based on PTR-ToF-MS profiles of the roast gas. This work demonstrates that time resolved analysis of roaster off-gas provides a detailed picture of the evolution of the roasting process.de_CH
dc.language.isoende_CH
dc.rightsLicence according to publishing contractde_CH
dc.subject.ddc663: Getränketechnologiede_CH
dc.titleOnline monitoring of the roaster off-gas during coffee roasting using proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) : towards a real-time process control for a consistent roast profilede_CH
dc.typeKonferenz: Sonstigesde_CH
dcterms.typeTextde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
zhaw.conference.detailsFall Meeting of the Swiss Chemical Society, Zurich, 13 September 2012de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.publication.reviewNot specifiedde_CH
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Wieland, F., Glöss, A., Keller, M., Schenker, S., & Yeretzian, C. (2012). Online monitoring of the roaster off-gas during coffee roasting using proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) : towards a real-time process control for a consistent roast profile. Fall Meeting of the Swiss Chemical Society, Zurich, 13 September 2012.
Wieland, F. et al. (2012) ‘Online monitoring of the roaster off-gas during coffee roasting using proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) : towards a real-time process control for a consistent roast profile’, in Fall Meeting of the Swiss Chemical Society, Zurich, 13 September 2012.
F. Wieland, A. Glöss, M. Keller, S. Schenker, and C. Yeretzian, “Online monitoring of the roaster off-gas during coffee roasting using proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) : towards a real-time process control for a consistent roast profile,” in Fall Meeting of the Swiss Chemical Society, Zurich, 13 September 2012, 2012.
WIELAND, Flurin, Alexia GLÖSS, Marco KELLER, Stefan SCHENKER und Chahan YERETZIAN, 2012. Online monitoring of the roaster off-gas during coffee roasting using proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) : towards a real-time process control for a consistent roast profile. In: Fall Meeting of the Swiss Chemical Society, Zurich, 13 September 2012. Conference presentation. 2012
Wieland, Flurin, Alexia Glöss, Marco Keller, Stefan Schenker, and Chahan Yeretzian. 2012. “Online Monitoring of the Roaster Off-Gas during Coffee Roasting Using Proton Transfer Reaction Time-of-Flight Mass Spectrometry (PTR-ToF-MS) : Towards a Real-Time Process Control for a Consistent Roast Profile.” Conference presentation. In Fall Meeting of the Swiss Chemical Society, Zurich, 13 September 2012.
Wieland, Flurin, et al. “Online Monitoring of the Roaster Off-Gas during Coffee Roasting Using Proton Transfer Reaction Time-of-Flight Mass Spectrometry (PTR-ToF-MS) : Towards a Real-Time Process Control for a Consistent Roast Profile.” Fall Meeting of the Swiss Chemical Society, Zurich, 13 September 2012, 2012.


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