Abstract
The development of chromo-reactive sensor spots for real time monitoring of fish freshness is described. The on-package sensor spots incorporating an immobilized pH sensitive dye, respond through visible colour change to basic volatile spoilage compounds collectively known as Total Volatile Basic Nitrogen (TVB-N). Trials on fresh fish filets have verified that the sensor can be employed for real time monitoring of fish spoilage. The sensor response can be interrogated with a simple, inexpensive reflectance colorimeter that we have developed based on two LEDs and a photodetector.
Original language | English |
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Article number | 69 |
Pages (from-to) | 545-550 |
Number of pages | 6 |
Journal | Proceedings of SPIE- The International Society for Optical Engineering |
Volume | 5826 |
DOIs | |
Publication status | Published - 2005 |
Externally published | Yes |
Event | Opto-Ireland 2005: Optical Sensing and Spectroscopy - Dublin, Ireland Duration: 4 Apr 2005 → 6 Apr 2005 |
Keywords
- Chromo-reactive dyes
- Freshness monitoring
- Smart packaging
- TVBN
- Volatile amines