Preparation,characterization and application of Konjac glucomannan/pullulan/microcrystalline cellulose/tea polyphenol active blend film  

作　　者：Feng Zhou Zepeng Gu Zhen Zeng Xiaoshu Tang Cheng Li Zhengfeng Fang Bin Hu Hong Chen Caixia Wang Saiyan Chen Hejun Wu Wenjuan Wu Yuntao Liu 

机构地区：[1]College of Food Science Sichuan,Agricultural University,Yaan,625014,China [2]School of Food Science and Technology,Jiangnan University,Wuxi,214122,China [3]National Engineering Research Center for Functional Food,Jiangnan University,Wuxi,214122,China [4]College of Science,Sichuan Agricultural University,Yaan,625014,China

出　　处：《Food Bioscience》2022年第5期406-416,共11页食品生物科学（英文）

基　　金：supported by the Yaan Science and Technology Program Project(2021);the Cooperation Project of Lushan County and Sichuan Agricultural University(2019),National College Students Innovation and Entrepreneurship Training Program(CN)(202110626030).

摘　　要：Films with excellent mechanical and activity have potential application in food preservation.Active films were prepared by blending Konjac glucomannan/Pullulan/Microcrystalline cellulose and Tea polyphenols.The effect of different content of MCC(0%-20%),and different treatment methods of film-preparing process,including ultrasonic or magnetic stirring on rheological properties,physicochemical,morphological characteristics,antioxidant and antibacterial were explored.Results suggested that ultrasound lowered the viscosity of film-solution,while adding MCC increased the water vapor permeability(WVP)and haze degree of films.Incorporating of optimal content of MCC(10%-15%),and treated by ultrasound could further increased the tensile strength(TS),U-10%film showed the highest TS(117.61 MPa),ultrasound could make the evenly disperses MCC in film-matrix by SEM.Additionally,films with TP presented excellent antioxidant activities and antibacterial activities against S.aureus and E.coli.Finally,the active films effectively preserved Agaricus bisporus and strawberries.Overall,the active films have potential applications in food packaging.

关 键 词：Konjac glucomannan PULLULAN Microcrystalline cellulose Active-film packaging ULTRASONIC Magnetic stirring treatment 

分 类 号：TS201[轻工技术与工程—食品科学]