Laboratory antimicrobial activity of cinnamaldehyde and pomegranate‐based polycaprolactone films. Issue 39 (11th June 2017)

• Record Type: Journal Article
• Authors: Uzunlu, Sinan; Niranjan, Keshavan
• Is Part Of: Journal of applied polymer science. Volume 134:Issue 39(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-06-11
• Subjects: biodegradable -- films -- packaging; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.45347
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: 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. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2017, 134, 45347. Abstract :