title: Polydiacetylene sensor interaction with food sanitizers and surfactants.
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.
authors.affiliation: Department of Food, Nutrition and Packaging Sciences, Clemson University, Clemson, SC 29634, United States. Electronic address: yueyuaz@g.clemson.edu.
authors.forename: Yueyuan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Food, Nutrition and Packaging Sciences, Clemson University, Clemson, SC 29634, United States. Electronic address: JKNORTH@g.clemson.edu.
authors.forename: Julie
authors.initials: J
authors.lastname: Northcutt
authors.affiliation: Department of Chemistry, Furman University, Greenville, SC 29613, United States. Electronic address: tim.hanks@furman.edu.
authors.forename: Tim
authors.initials: T
authors.lastname: Hanks
authors.affiliation: Department of Chemistry, Furman University, Greenville, SC 29613, United States. Electronic address: ian.miller2@furman.edu.
authors.forename: Ian
authors.initials: I
authors.lastname: Miller
authors.affiliation: Department of Chemistry, Clemson University, Clemson, SC 29634, United States. Electronic address: billp@g.clemson.edu.
authors.forename: Bill
authors.initials: B
authors.lastname: Pennington
authors.affiliation: Department of Chemistry, Ben Gurion University, Beer Shava, Israel. Electronic address: razj@bgu.ac.il.
authors.forename: Raz
authors.initials: R
authors.lastname: Jelinek
authors.affiliation: Department of Food, Nutrition and Packaging Sciences, Clemson University, Clemson, SC 29634, United States. Electronic address: ihan@g.clemson.edu.
authors.forename: Inyee
authors.initials: I
authors.lastname: Han
authors.affiliation: Department of Food, Nutrition and Packaging Sciences, Clemson University, Clemson, SC 29634, United States. Electronic address: pdawson@g.clemson.edu.
authors.forename: Paul
authors.initials: P
authors.lastname: Dawson
mesh_terms: D015374:Biosensing Techniques / Q000379:methods*; D004202:Disinfectants / Q000032:analysis / Q000378:metabolism; D005504:Food Analysis / Q000379:methods*; D005520:Food Preservatives / Q000032:analysis / Q000378:metabolism*; D000078789:Polyacetylene Polymer; D011108:Polymers / Q000032:analysis / Q000378:metabolism*; D053279:Polyynes / Q000032:analysis / Q000378:metabolism*; D012499:Sanitation / Q000379:methods; D012973:Sodium Hypochlorite / Q000032:analysis / Q000378:metabolism; D013501:Surface-Active Agents / Q000032:analysis / Q000378:metabolism*
chemical_list: D004202:Disinfectants; D005520:Food Preservatives; D000078789:Polyacetylene Polymer; D011108:Polymers; D013501:Surface-Active Agents; D053279:Polyynes; C082361:polydiacetylene; D012973:Sodium Hypochlorite
keywords: Food industry; PDA; Polydiacetylene vesicles; Sanitizer; Sensor