Abstract:
:To deal with serious environmental pollution resulting from plastic packaging materials, biodegradable films using chitosan (CS) are gaining considerable increase gradually. However, chitosan films lack important properties to meet the preserved demands. This study aimed to develop new bio-based films incorporated with carboxymethyl chitosan-ZnO (CMCS-ZnO) nanoparticles and sodium alginate (SA) to overcome the weakness of CS films. CMCS-ZnO nanoparticles were successfully synthesized in the matrix of CMCS through direct precipitation method, which showed an average diameter of 100 nm. Multilayer films with CS film as the outer layer and SA film as the inner layer were prepared by solution casting method. The addition of CMCS-ZnO nanoparticles led to enhanced tensile strength, and to better water vapor resistance. The as-prepared films exhibited distinctive antibacterial activity against S. aureus and E. coli. The results suggested that the as-prepared film is expected to be a promising material for food packaging.
journal_name
Food Chemjournal_title
Food chemistryauthors
Wang H,Gong X,Miao Y,Guo X,Liu C,Fan YY,Zhang J,Niu B,Li Wdoi
10.1016/j.foodchem.2019.01.022subject
Has Abstractpub_date
2019-06-15 00:00:00pages
397-403eissn
0308-8146issn
1873-7072pii
S0308-8146(19)30089-5journal_volume
283pub_type
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