Novel luminescent oxygen sensor systems for smart food packaging

Show simple item record

dc.contributor.advisor Papkovsky, Dmitri B. en
dc.contributor.advisor Kerry, Joseph P. en Kelly, Caroline Ann 2017-02-24T09:37:58Z 2017-02-24T09:37:58Z 2017 2017
dc.identifier.citation Kelly, C. A. 2017. Novel luminescent oxygen sensor systems for smart food packaging. PhD Thesis, University College Cork. en
dc.identifier.endpage 163 en
dc.description.abstract For industrial applications, solid-state O2 sensors based on the quenching of photoluminescence, should be accurate, robust, easy-to-use in a calibration-free manner. These sensors generally consist of an O2 sensitive luminescent dye in a polymer matrix. The properties of this matrix such as dye compatibility, O2 permeability, mechanical strength and chemical resistance have a significant influence on the sensors final operating parameters. Although used in many applications, the existing solid-state sensing materials and manufacturing processes remain complex, rigid and expensive for large scale fabrication while incurring a substantial extra cost. Currently, as few sensors fit these ideals, there is a need for new sensor materials, fabrication techniques and integration technologies. We created and evaluated five new solid-state O2 sensitive materials: four based on microporous polypropylene fabric materials and one on polyphenylene sulphide films. The onus was on simplifying composition of sensors and ergo reduction in material consumption and manufacturing cost. The sensors exhibited lifetime signals and working characteristics suitable for use in food packaging. When tested in food simulants and in direct contact with food, the sensor based on ungrafted polypropylene membrane fabricated by the swelling method, outperformed the other sensors. This sensor is cheaper than commercial sensors, is easily incorporated into current packaging materials by means of heat-sealing or lamination and has a storage shelf-life of at least 12 months when stored in normal atmospheric conditions. Proof-of-concept tests, using commercial sensors, were carried out for industry customers. Sensors were used to track oxygen levels in meat packaging and also to select optimum packaging for a beverage product. en
dc.description.sponsorship Department of Agriculture, Food and the Marine (Grant 11/F/015) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2017, Caroline Ann Kelly. en
dc.rights.uri en
dc.subject Solid-state oxygen sensor en
dc.subject Oxygen-sensitive phosphorescent dye en
dc.subject Microporous polypropylene en
dc.subject Sensors for food packaging en
dc.title Novel luminescent oxygen sensor systems for smart food packaging en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname PhD (Science) en
dc.internal.availability Full text available en No embargo required en
dc.description.version Accepted Version
dc.contributor.funder Department of Agriculture, Food and the Marine en
dc.description.status Not peer reviewed en Biochemistry en
dc.check.type No Embargo Required
dc.check.reason No embargo required en
dc.check.opt-out Not applicable en
dc.thesis.opt-out false
dc.check.embargoformat Not applicable en
dc.internal.conferring Spring 2017 en

Files in this item

This item appears in the following Collection(s)

Show simple item record

© 2017, Caroline Ann Kelly. Except where otherwise noted, this item's license is described as © 2017, Caroline Ann Kelly.
This website uses cookies. By using this website, you consent to the use of cookies in accordance with the UCC Privacy and Cookies Statement. For more information about cookies and how you can disable them, visit our Privacy and Cookies statement