Abstract
Polydiacetylene (PDA) vesicles are of interest as biosensors, particularly for pathogenic bacteria. As part of a food monitoring system, interaction with food sanitizers/surfactants was investigated. PDA vesicles were prepared by inkjet-printing, photopolymerized and characterized by dynamic light scattering (DLS) and UV/Vis spectroscopy. The optical response of PDA vesicles at various concentrations verses a fixed sanitizer/surfactant concentration was determined using a two variable factorial design. Sanitizer/surfactant response at various concentrations over time was also measured. Results indicated that only Vigilquat and TritonX-100 interacted with PDA vesicles giving visible colour change out of 8 sanitizers/surfactants tested. PDA vesicle concentration, sanitizer/surfactant concentration, and time all had a significant (P < 0.0001) effect on colour change. As they are highly sensitive to the presence of Vigilquat and TritonX-100, PDA sensors could be used to detect chemical residues as well as for detection of various contaminants in the food industry.
| Original language | American English |
|---|---|
| Pages (from-to) | 515-520 |
| Number of pages | 6 |
| Journal | Food Chemistry |
| Volume | 221 |
| DOIs | |
| State | Published - 15 Apr 2017 |
Keywords
- Food industry
- PDA
- Polydiacetylene vesicles
- Sanitizer
- Sensor
All Science Journal Classification (ASJC) codes
- Analytical Chemistry
- Food Science