Non-intrusive headspace gas measurements by laser spectroscopy – Performance validation by a reference sensor
Author
Summary, in English
Abstract in Undetermined
The oxygen concentration in the headspace of a large number of liquid food containers is assessed with non-intrusive diode laser absorption spectroscopy. The results are compared to those given by a traditional intrusive measurement method. The upper portions of the containers are made of translucent but non-transparent plastic materials, through which the laser light is diffusively transmitted. Measurements are performed both on packages with modified atmosphere and with normal air conditions. It is concluded that the novel non-intrusive technique provides oxygen concentrations that generally differ by less than one percentage point from the reference sensor values.
The oxygen concentration in the headspace of a large number of liquid food containers is assessed with non-intrusive diode laser absorption spectroscopy. The results are compared to those given by a traditional intrusive measurement method. The upper portions of the containers are made of translucent but non-transparent plastic materials, through which the laser light is diffusively transmitted. Measurements are performed both on packages with modified atmosphere and with normal air conditions. It is concluded that the novel non-intrusive technique provides oxygen concentrations that generally differ by less than one percentage point from the reference sensor values.
Department/s
Publishing year
2012
Language
English
Pages
612-617
Publication/Series
Journal of Food Engineering
Volume
111
Issue
4
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Document type
Journal article
Publisher
Elsevier
Topic
- Other Mechanical Engineering
- Atom and Molecular Physics and Optics
Keywords
- Non-intrusive
- Laser
- Spectroscopy
- Headspace
- Gas sensing
- Modified atmosphere
- Packaging logistics
Status
Published
ISBN/ISSN/Other
- ISSN: 0260-8774