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

Molecules

Gaofeng Yuan¹  Hua Lv²  Bingjie Yang²  Xiaoe Chen¹  Haiyan Sun¹ 

[1] Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhejiang Ocean University, Zhoushan 316022, China; E-Mails:;College of Food and Medicine, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China; E-Mails:

关键词: chitosan film;    antioxidant activity;    antibacterial activity;    pomegranate peel extract;    carvacrol;   

DOI  :  10.3390/molecules200611034

来源: mdpi

【 摘 要 】

Chitosan-based active films were developed by incorporation of carvacrol (10g/L), pomegranate peel extract (PPE, 10g/L) and carvacrol + PPE (10g/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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.