| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5140745 | Talanta | 2017 | 16 Pages |
Abstract
A colourimetric sensor layer has been developed for ammonia and biogenic amines. Amine exposure induces a traffic light colour change from green to red. Recognition is performed by a pH indicator dye, covalently immobilised onto cellulose microparticles. The sensor microparticles are embedded into food-grade silicone. Selectivity of the pH indicator dye towards gaseous amine is obtained by complete embedding of the sensor particles within the ion-impermeable silicone. A response time of 1.5Â h has been achieved, with a reverse response occurring after 20Â h. This time frame is considered sufficient for spoilage processes. Cytotoxicity studies confirm the layers are non-toxic.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Cindy Schaude, Claudia Meindl, Eleonore Fröhlich, Jennifer Attard, Gerhard J. Mohr,