Title

Polydiacetylene sensor interaction with food sanitizers and surfactants

ACS Citation

Zhang, Y.; Northcutt, J.; Hanks, T. W.; Miller, I.; Pennington, W. T.; Jelinek, R.; Han, I. Food Chem. 2017, 221, 515-520.

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.

Source Name

Food Chemistry

Publication Date

2017

Volume

221

Page(s)

515-520

Document Type

Citation

Citation Type

Article