Abstract

Adequate food packaging is important to ensure food quality and prolong the shelf life of food. Frequently, the method of modified atmosphere packaging (MAP) is used. We used a tunable diode laser spectroscopy technique to detect the oxygen content in food packages, e.g., in packaged milk and bread. Different detection geometries were adopted to be able to collect scattering light that had passed through the gas volume in the packages, and to avoid the disturbance of ambient air. Furthermore, studies of the bread-baking process have been performed by measuring the water vapor signals in a fermenting dough. The results demonstrate that the technique has a great potential for nonintrusive assessment of food quality and the bread-baking process.

© 2016 The Author(s)

Laser spectroscopy applied to environmental, ecological, food safety, and biomedical research

Sune Svanberg, Guangyu Zhao, Hao Zhang, Jing Huang, Ming Lian, Tianqi Li, Shiming Zhu, Yiyun Li, Zheng Duan, Huiying Lin, and Katarina Svanberg
Opt. Express 24(6) A515-A527 (2016)

Simultaneous detection of molecular oxygen and water vapor in the tissue optical window using tunable diode laser spectroscopy

Linda Persson, Märta Lewander, Mats Andersson, Katarina Svanberg, and Sune Svanberg
Appl. Opt. 47(12) 2028-2034 (2008)

Gas spectroscopy and optical path-length assessment in scattering media using a frequency-modulated continuous-wave diode laser

Liang Mei, Hiran Jayaweera, Patrik Lundin, Sune Svanberg, and Gabriel Somesfalean
Opt. Lett. 36(16) 3036-3038 (2011)

Nitric oxide breath testing by tunable-diode laser absorption spectroscopy: application in monitoring respiratory inflammation

Chad Roller, Khosrow Namjou, James D. Jeffers, Mark Camp, Adam Mock, Patrick J. McCann, and Joe Grego
Appl. Opt. 41(28) 6018-6029 (2002)

Tunable diode laser absorption spectroscopy in coiled hollow optical waveguides

Gregory J. Fetzer, Anthony S. Pittner, William L. Ryder, and Dorothy A. Brown
Appl. Opt. 41(18) 3613-3621 (2002)