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Molecules 2015, 20(6), 11034-11045; doi:10.3390/molecules200611034

Physical Properties, Antioxidant and Antimicrobial Activity of Chitosan Films Containing Carvacrol and Pomegranate Peel Extract

1
Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhejiang Ocean University, Zhoushan 316022, China
2
College of Food and Medicine, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China
*
Author to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 4 May 2015 / Revised: 8 June 2015 / Accepted: 9 June 2015 / Published: 15 June 2015
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Abstract

Chitosan-based active films were developed by incorporation of carvacrol (10 g/L), pomegranate peel extract (PPE, 10 g/L) and carvacrol + PPE (10 g/L of each) and their physical, antioxidant and antimicrobial properties were investigated. Incorporation of carvacrol and carvacrol + PPE into the films significantly decreased the water vapor permeability, tensile strength and percentage of elongation at break. Incorporation of carvacrol, PPE and carvacrol + PPE into the films decreased the transparency, but significantly increased the total phenol content and antioxidant activity. All the films, with the exception of PPE-incorporated film, exhibited antibacterial activity against Escherichia coli and Staphylococcus aureus. In addition, the antibacterial activity against Staphylococcus aureus of the film incorporated with carvacrol + PPE was moderately higher than that incorporated with carvacrol or PPE alone, suggesting a synergistic action between carvacrol and PPE. View Full-Text
Keywords: chitosan film; antioxidant activity; antibacterial activity; pomegranate peel extract; carvacrol chitosan film; antioxidant activity; antibacterial activity; pomegranate peel extract; carvacrol
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MDPI and ACS Style

Yuan, G.; Lv, H.; Yang, B.; Chen, X.; Sun, H. Physical Properties, Antioxidant and Antimicrobial Activity of Chitosan Films Containing Carvacrol and Pomegranate Peel Extract. Molecules 2015, 20, 11034-11045.

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