Calorimetric gas sensors for hydrogen peroxide monitoring in aseptic food processes

  • For the sterilisation of aseptic food packages it is taken advantage of the microbicidal properties of hydrogen peroxide (H2O2). Especially, when applied in vapour phase, it has shown high potential of microbial inactivation. In addition, it offers a high environmental compatibility compared to other chemical sterilisation agents, as it decomposes into oxygen and water, respectively. Due to a lack in sensory detection possibilities, a continuous monitoring of the H2O2 concentration was recently not available. Instead, the sterilisation efficacy is validated using microbiological tests. However, progresses in the development of calorimetric gas sensors during the last 7 years have made it possible to monitor the H2O2 concentration during operation. This chapter deals with the fundamentals of calorimetric gas sensing with special focus on the detection of gaseous hydrogen peroxide. A sensor principle based on a calorimetric differential set-up is described. Special emphasis is given to the sensor design with respect to the operational requirements under field conditions. The state-of-the-art regarding a sensor set-up for the on-line monitoring and secondly, a miniaturised sensor for in-line monitoring are summarised. Furthermore, alternative detection methods and a novel multi-sensor system for the characterisation of aseptic sterilisation processes are described.

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Metadaten
Author:Patrick Kirchner, Steffen Reisert, Michael Josef SchöningORCiD
DOI:https://doi.org/10.1007/5346_2013_51
ISBN:978-3-642-54518-4 (Print) ; 978-3-642-54519-1 (Online)
Parent Title (English):Gas sensing fundamentals. (Springer Series on Chemical Sensors and Biosensors ; 15)
Publisher:Springer
Place of publication:Heidelberg
Document Type:Part of a Book
Language:English
Year of Completion:2014
Date of the Publication (Server):2014/12/01
Tag:Calorimetric gas sensor; Hydrogen peroxide; Multi-sensor system
First Page:279
Last Page:309
Link:http://aachen.eblib.com/patron/FullRecord.aspx?p=1802738
Zugriffsart:campus
Institutes:FH Aachen / INB - Institut für Nano- und Biotechnologien
collections:Verlag / Springer