TY - GEN
T1 - A gas-phase colorimetric sensor for the detection of amine spoilage products in packaged fish
AU - Crowley, Karl
AU - Pacquit, Alexis
AU - Hayes, Jer
AU - Lau, King Tong
AU - Diamond, Dermot
PY - 2005
Y1 - 2005
N2 - In this work, the design and application of a colorimetric amine sensor is detailed. The sensor consists of a pH indicator dye immobilised within a rugged, gas-permeable polymer film. The visual transition can be monitored quantitatively using a custom-built LED probe, or qualitatively with the human eye (i.e. using a colour code). Incorporation of several indicator dyes allows the monitoring of pH over an extended range and the sensor also has many potential applications in gas phase analysis (6 ppm LOD for ammonia). In this case, the sensor has been tailored to monitor TVB-N (Total Volatile Basic Nitrogen) spoilage products in the headspace of packaged fish. As the fish spoils, a colour change results as the TVB-N compounds shift the pH to higher values. This provides a non-invasive and simple method of rapidly detecting spoilage of produce inside sealed packaging. In trials to date, the sensor response has been found to mirror the progress of microbial spoilage.
AB - In this work, the design and application of a colorimetric amine sensor is detailed. The sensor consists of a pH indicator dye immobilised within a rugged, gas-permeable polymer film. The visual transition can be monitored quantitatively using a custom-built LED probe, or qualitatively with the human eye (i.e. using a colour code). Incorporation of several indicator dyes allows the monitoring of pH over an extended range and the sensor also has many potential applications in gas phase analysis (6 ppm LOD for ammonia). In this case, the sensor has been tailored to monitor TVB-N (Total Volatile Basic Nitrogen) spoilage products in the headspace of packaged fish. As the fish spoils, a colour change results as the TVB-N compounds shift the pH to higher values. This provides a non-invasive and simple method of rapidly detecting spoilage of produce inside sealed packaging. In trials to date, the sensor response has been found to mirror the progress of microbial spoilage.
UR - http://www.scopus.com/inward/record.url?scp=33845333963&partnerID=8YFLogxK
U2 - 10.1109/ICSENS.2005.1597809
DO - 10.1109/ICSENS.2005.1597809
M3 - Conference Proceeding
AN - SCOPUS:33845333963
SN - 0780390563
SN - 9780780390560
T3 - Proceedings of IEEE Sensors
SP - 754
EP - 757
BT - Proceedings of the Fourth IEEE Conference on Sensors 2005
T2 - Fourth IEEE Conference on Sensors 2005
Y2 - 31 October 2005 through 3 November 2005
ER -