Fish freshness sensor

Jeremy M. Hammond; Todd Mlsna; Dean J. Smith; Bernd Fruhberger

doi:10.1117/12.371311

23 November 1999 Fish freshness sensor

Jeremy M. Hammond, Todd Mlsna, Dean J. Smith, Bernd Fruhberger

Proceedings Volume 3856, Internal Standardization and Calibration Architectures for Chemical Sensors; (1999) https://doi.org/10.1117/12.371311
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

An array of semiconducting metal oxide (SMO) chemiresistive sensor can quantitatively measure the freshness of Atlantic salmon. A variety of SMO films were tested, including films containing oxides of tungsten and tin. Experiments were performed with these films to determine if they were sensitive to trimethylamine and/or dimethylamine, known Atlantic salmon degradation products. The electrical resistance of the films before and during exposures to concentrations of the amines was monitored. The sensor temperatures were varied to determine the operating conditions for sensitivity and selectivity to one or both gases. The most promising films were then used to monitor the degradation of Atlantic salmon is conjunction with a sensory evaluation panel and tests using gas chromatography mass spectrometry and total volatile base nitrogen.

Citation Download Citation

Jeremy M. Hammond, Todd Mlsna, Dean J. Smith, and Bernd Fruhberger "Fish freshness sensor", Proc. SPIE 3856, Internal Standardization and Calibration Architectures for Chemical Sensors, (23 November 1999); https://doi.org/10.1117/12.371311

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