Polydiacetylene sensor interaction with food sanitizers and surfactants

Yueyuan Zhang, Julie Northcutt, Tim Hanks, Ian Miller, Bill Pennington, Raz Jelinek, Inyee Han, Paul Dawson

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

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 languageEnglish
Pages (from-to)515-520
Number of pages6
JournalFood Chemistry
Volume221
DOIs
StatePublished - 15 Apr 2017

Keywords

  • Food industry
  • PDA
  • Polydiacetylene vesicles
  • Sanitizer
  • Sensor

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