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Laboratory antimicrobial activity of cinnamaldehyde and pomegranate-based polycaprolactone films

Uzunlu, S. and Niranjan, K. ORCID: (2017) Laboratory antimicrobial activity of cinnamaldehyde and pomegranate-based polycaprolactone films. Journal of Applied Polymer Science, 134 (39). 45347. ISSN 0021-8995

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To link to this item DOI: 10.1002/app.45347


Polycaprolactone (PCL) was incorporated separately with cinnamaldehyde (CNMA), pomegranate methanolic extract (PME), freeze dried arils of pomegranate (FDAP), and seed flour of pomegranate (SF) to form antimicrobial films to be used for active food packaging. PCL–CNMA films completely inactivated growth of the artificially inoculated Escherichia coli and Staphylococcus aureus, whether at 5% or 10% concentrations (wt/wt of polymer), at all studied temperatures (4, 20, and 37 °C). PCL–PME films (10% wt/wt of polymer) delayed the growth of E. coli and S. aureus for up to 7 and 6 days, respectively, at 37 °C. Two-day delays in the growth of both bacteria were achieved with FDAP and SF films (10% wt/wt of polymer) at 20 °C. The release of CNMA was slower than the release of PME during film processing, as measured by Fourier transform infrared spectroscopy. Thus, CNMA and pomegranate-based films perhaps should be planned further for use in controlled release food packaging.

Item Type:Article
Divisions:Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Food Research Group
ID Code:70837
Uncontrolled Keywords:Materials Chemistry, Chemistry(all), Surfaces, Coatings and Films, Polymers and Plastics

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