Food monitoring based on diode laser gas spectroscopy
Författare
Summary, in English
Abstract Food is frequently packed in a controlled environment
of gas, in order to extend shelf life. It is of great
importance to be able to monitor the status of the packed
food to ensure quality. We demonstrate a technique to monitor
the gas inside packages non-intrusively by using a laser
spectroscopicmethod in scattering solid materials. The technique
named GASMAS (GAs in Scattering Media Absorption
Spectroscopy) is based on tunable diode laser absorption
spectroscopy and relies on the fact that free gas inside
solid materials absorbs much sharper spectrally than
the bulk material. Results from time dependent measurements
of molecular oxygen and water vapour in packages
of minced meat, bake-off bread, and the headspace of a milk
carton are presented. We show that the technique allows gas
measurements inside the food through the package, and assessment
of the integrity of the package.
of gas, in order to extend shelf life. It is of great
importance to be able to monitor the status of the packed
food to ensure quality. We demonstrate a technique to monitor
the gas inside packages non-intrusively by using a laser
spectroscopicmethod in scattering solid materials. The technique
named GASMAS (GAs in Scattering Media Absorption
Spectroscopy) is based on tunable diode laser absorption
spectroscopy and relies on the fact that free gas inside
solid materials absorbs much sharper spectrally than
the bulk material. Results from time dependent measurements
of molecular oxygen and water vapour in packages
of minced meat, bake-off bread, and the headspace of a milk
carton are presented. We show that the technique allows gas
measurements inside the food through the package, and assessment
of the integrity of the package.
Avdelning/ar
Publiceringsår
2008
Språk
Engelska
Sidor
619-625
Publikation/Tidskrift/Serie
Applied Physics B
Volym
93
Fulltext
- Available as PDF - 732 kB
- Download statistics
Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Springer
Ämne
- Atom and Molecular Physics and Optics
- Other Mechanical Engineering
Nyckelord
- Laser spectroscopy
- Food Packaging
- Gas compositions
- Logistics
- Non-intrusive measurements
- Packaging
- Packaging logistics
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0946-2171