摘要
以鱼鳞明胶(SG)和壳聚糖(CS)为原料,薰衣草精油(LEO)为抗菌剂,通过共混法制备了抗菌复合膜(SG/CS/LEO),通过FTIR、XRD、SEM和热重分析对复合膜进行了表征,并对其力学性能、光学性能、阻隔性能、抑菌性能进行了测试。结果表明,LEO与SG/CS基膜较好地复合,与SG/CS基膜相比,当LEO添加量(以明胶/壳聚糖成膜液体积计,下同)为1.00%时,复合膜拉伸强度下降了10.46%,但仍具有良好的力学强度[(26.36±0.45)MPa],断裂伸长率提升了12.96%;透明度有所下降,透光率下降了8.70%;耐水性能和水蒸气阻隔性能显著增强,含水率、水溶性和水蒸气透过率分别下降了22.48%、30.49%和26.41%;DPPH自由基清除率提高了247.88%,抗氧化性显著提高;同时对大肠杆菌和金黄色葡萄球菌具有良好的抑菌作用。
Antibacterial composite film was prepared by blending fish scale gelatin(SG)with chitosan(CS)and lavender essential oil(LEO).The composite film obtained was then characterized by FTIR,XRD,SEM and thermogravimetric analysis,followed by evaluation on its mechanical,optical,barrier and antibacterial properties.The characterization results showed that LEO was well blended into SG/CS base film.Compared with the control SG/CS base film,at LEO content(based on the volume of SG/CS film forming solution,the same below)of 1.00%,the composite film displayed a tensile strength reduction by 10.46%,elongation at break increase by 12.96%,transparency decrease by 8.70%,DPPH radical scavenging rate elevation by 247.88%,and decrease of water content,water solubility and water vapor transmittance by 22.48%,30.49%and 26.41%,respectively,while still exhibited good mechanical strength[(26.36±0.45)MPa]and significantly enhanced water resistance and water vapor barrier performance.Meanwhile,the composite film showed significant improvement in oxidation resistance and good inhibitory effect on E.coli and S.aureus.
作者
张群利
罗灏
崔琳琳
刘宇鹏
ZHANG Qunli;LUO Hao;CUI Linlin;LIU Yupeng(College of Engineering and Technology,Northeast Forestry University,Harbin 150040,Heilongjiang,China;School of Pharmacy,Harbin University of Commerce,Harbin 150076,Heilongjiang,China;Key Laboratory of Sustainable Forest Management&Environmental Microbiology in Heilongjiang Province,Harbin 150040,Heilongjiang,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2022年第11期2259-2267,共9页
Fine Chemicals
基金
中央高校基本科研业务费专项资金资助(2572019BL01)。
关键词
鱼鳞明胶
壳聚糖
薰衣草精油
力学性能
光学性能
阻隔性能
抑菌性能
功能材料
fish scale gelatin
chitosan
lavender essential oil
mechanical properties
optical properties
barrier properties
bacteriostatic properties
functional materials
