Characterization of antimicrobial polylactic acid based films |
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Authors: | Zekiye Özge Erdohan Belgizar Çam Kamile Nazan Turhan |
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Affiliation: | 1. Department of Food Engineering, University of Mersin, Turkey;2. Department of Food Engineering, Faculty of Agricultural Technology and Food Science, ?zmir University of Economics, Turkey |
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Abstract: | Olive leaf extract (OLE) (Olea europaea L.), which has antimicrobial effect on many food pathogens, was incorporated as antimicrobial agent into polylactic acid (PLA) films. Antimicrobial activities of films were tested against Staphylococcus aureus. Increasing amount of the OLE in the film discs from 0.9 mg to 5.4 mg caused a significant increase in inhibitory zones from 9.10 mm to 16.20 mm, respectively. Moreover, incorporation of OLE and/or increasing the amount in the film formulation significantly enhanced the water vapor permeability (WVP). The water solubility and the degradation rates of films increased up to 19.3% and 22.4%, respectively. Thus, OLE incorporated PLA films have a prospectively potential in antimicrobial food packaging to reduce post-process growth of S. aureus with improved properties. |
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Keywords: | Olive leaf extract Polylactic acid Antimicrobial packaging Film properties |
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