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Molecules. 2015 Jun 15;20(6):11034-45. doi: 10.3390/molecules200611034.

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

Yuan G1,2, Lv H3, Yang B4, Chen X5,6, Sun H7,8.

Author information

1
Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhejiang Ocean University, Zhoushan 316022, China. yuangf@zjou.edu.cn.
2
College of Food and Medicine, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China. yuangf@zjou.edu.cn.
3
College of Food and Medicine, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China. climbery@126.com.
4
College of Food and Medicine, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China. 18268732445@163.com.
5
Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhejiang Ocean University, Zhoushan 316022, China. Xiaoechen@163.com.
6
College of Food and Medicine, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China. Xiaoechen@163.com.
7
Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhejiang Ocean University, Zhoushan 316022, China. sunhy@zjou.edu.cn.
8
College of Food and Medicine, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China. sunhy@zjou.edu.cn.

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.

KEYWORDS:

antibacterial activity; antioxidant activity; carvacrol; chitosan film; pomegranate peel extract

PMID:
26083037
PMCID:
PMC6272336
DOI:
10.3390/molecules200611034
[Indexed for MEDLINE]
Free PMC Article

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