OPQS – optical process and quality sensing : exemplary applications in the beerbrewing and polyurethane foaming processes

  • Optical methods play an important role in process analytical technologies (PAT). Four examples of optical process and quality sensing (OPQS) are presented, which are based on three important experimental techniques: near-infrared absorption, luminescence quenching, and a novel method, photon density wave (PDW) spectroscopy. These are used to evaluate four process and quality parameters related to beer brewing and polyurethane (PU) foaming processes: the ethanol content and the oxygen (O2) content in beer, the biomass in a bioreactor, and the cellular structures of PU foam produced in a pilot production plant.

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Author:Sonja Engelhard, Michael U. Kumke, Hans-Gerd Löhmannsröben
Series (Serial Number):Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (paper 004)
Document Type:Postprint
Date of Publication (online):2007/02/05
Year of Completion:2006
Publishing Institution:Universität Potsdam
Release Date:2007/02/05
Tag:NIR spectroscopy; beer; biomass; fluorescence quenching; foam analysis; photon density wave spectroscopy; process analytical technology
Source:Analytical and Bioanalytical Chemistry.- ISSN 1618-2650. - 384 (2006), 5, p. 1107 - 1112
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften
Collections:Universität Potsdam / Aufsätze (Pre- und Postprints) / Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie / Physikalische Chemie
Notes extern:
Original publication is available at www.springerlink.com:
Analytical and Bioanalytical Chemistry - ISSN 1618-2650. - 384 (2006), 5, S. 1107 - 1112
doi: 10.1007/s00216-005-3364-4