Antimicrobial and mechanical properties of β-cyclodextrin inclusion with essential oils in chitosan films.
Antimicrobial and mechanical properties of β-cyclodextrin inclusion with essential oils in chitosan films.
复制标题
DOI：
10.1021/jf5027873
复制
发表时间：
2014-08
影响因子：
6.1
通讯作者：
Xiuxiu Sun;Siyao Sui;C. Ference;Yifan Zhang;Shi Sun;N. Zhou;Wenjun Zhu;K. Zhou
中科院分区：
文献类型：
--
作者：
Xiuxiu Sun;Siyao Sui;C. Ference;Yifan Zhang;Shi Sun;N. Zhou;Wenjun Zhu;K. Zhou
制备了不同浓度的β-环糊精和精油复合物（β-CD/EO）的壳聚糖膜，并对其抗菌性、机械性能和物理性能进行了研究。选择四种常见的污染食品的细菌菌株作为目标细菌，以评价所制备的膜的抗菌活性。β-CD/EO的掺入显著提高了壳聚糖膜对大肠杆菌、鼠伤寒沙门氏菌、金黄色葡萄球菌和单核细胞增生李斯特菌的抗菌活性。β-环糊精和0.75%的精油复合物的加入显著提高了壳聚糖膜的拉伸强度。断裂伸长率（EB）随着精油浓度的增加而降低。β-环糊精和0.25%精油的复合物的包合也显着降低壳聚糖膜的水蒸气渗透性（WVP）。结果表明，β-CD/EO复合壳聚糖膜可作为活性食品包装材料。
Chitosan films incorporated with various concentrations of the complex of β-cyclodextrin and essential oils (β-CD/EO) were prepared and investigated for antimicrobial, mechanical, and physical properties. Four bacterial strains that commonly contaminate food products were chosen as target bacteria to evaluate the antimicrobial activity of the prepared films. The incorporation of β-CD/EO significantly increased the antimicrobial activities of the chitosan films against Escherichia coli, Salmonella typhimurium, Staphylococcus aureus, and Listeria monocytogenes. It was also found that tensile strength (TS) of chitosan film was significantly increased with the incorporation of the β-cyclodextrin and 0.75% essential oils complex. The elongation at break (EB) decreased with the increasing concentrations of essential oils. Inclusion of the complex of β-cyclodextrin and 0.25% essential oils also significantly decreased water vapor permeability (WVP) of chitosan films. Our results suggest that chitosan films containing β-CD/EO could be used as active food-packaging material.