Yuan Gaofeng, Lv Hua, Yang Bingjie, Chen Xiaoe, Sun Haiyan
Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhejiang Ocean University, Zhoushan 316022, China.
College of Food and Medicine, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China.
Molecules. 2015 Jun 15;20(6):11034-45. doi: 10.3390/molecules200611034.
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.
通过掺入香芹酚（10 g/L）、石榴皮提取物（PPE，10 g/L）以及香芹酚+PPE（各10 g/L）制备了壳聚糖基活性薄膜，并对其物理、抗氧化和抗菌性能进行了研究。将香芹酚以及香芹酚+PPE掺入薄膜中显著降低了水蒸气透过率、拉伸强度和断裂伸长率。将香芹酚、PPE以及香芹酚+PPE掺入薄膜中降低了透明度，但显著提高了总酚含量和抗氧化活性。除了掺入PPE的薄膜外，所有薄膜均对大肠杆菌和金黄色葡萄球菌表现出抗菌活性。此外，掺入香芹酚+PPE的薄膜对金黄色葡萄球菌的抗菌活性略高于单独掺入香芹酚或PPE的薄膜，这表明香芹酚和PPE之间存在协同作用。
