title: Preparation and characterization of chitosan film incorporated with thinned young apple polyphenols as an active packaging material.
abstract: The objective of this study was to characterize the physical, mechanical and bioactive properties of chitosan film incorporated with thinned young apple polyphenols (YAP). The results indicated that the addition of YAP resulted in a significant increase in the thickness, density, swelling degree, solubility and opacity of chitosan film, but the water content, water vapor permeability and mechanical properties of the film were decreased. Besides, the antioxidant and antimicrobial properties of chitosan film were significantly enhanced by YAP. Both the NMR and FTIR spectra indicated the interactions between YAP and chitosan were likely to be non-covalent. Furthermore, the thermal stability of the film was decreased by YAP addition, suggested by DSC. Interestingly, the changing tendency of crystalline degree indicated by X-ray kept pace with that of thermal stability for YAP-chitosan films. Overall, YAP-chitosan film was shown a potential as a bioactive packaging material to extend food shelf-life.
authors.affiliation: College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, PR China; Centre for Nutrition and Food Science, Queensland Alliance for Agricultural and Food Innovation, The University of Queensland, Brisbane 4072, Australia. Electronic address: l.sun1@uq.edu.au.
authors.forename: Lijun
authors.initials: L
authors.lastname: Sun
authors.affiliation: College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, PR China.
authors.forename: Jiaojiao
authors.initials: J
authors.lastname: Sun
authors.affiliation: School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710062, PR China.
authors.forename: Lei
authors.initials: L
authors.lastname: Chen
authors.affiliation: College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, PR China.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Niu
authors.affiliation: College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, PR China.
authors.forename: Xingbin
authors.initials: X
authors.lastname: Yang
authors.affiliation: College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, PR China. Electronic address: yrguo730@snnu.edu.cn.
authors.forename: Yurong
authors.initials: Y
authors.lastname: Guo
mesh_terms: D048271:Chitosan / Q000737:chemistry*; D018857:Food Packaging; D027845:Malus / Q000737:chemistry*; D059808:Polyphenols / Q000737:chemistry*
chemical_list: D059808:Polyphenols; D048271:Chitosan
keywords: Chitosan film; Film bioactivities; Film characterization; Packaging material; Young apple polyphenols