Novel 2,3-Dialdehyde Cellulose-Based Films with Photodynamic Inactivation Potency by Incorporating the β-Cyclodextrin/Curcumin Inclusion Complex
| Autor: | Qiandai Shi, Qingfeng Dong, Qiao-Hui Zeng, Yu Du, Yong Zhao, Jing Jing Wang, Lu Chen |
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| Rok vydání: | 2021 |
| Předmět: |
Curcumin
Polymers and Plastics Chemical structure Bioengineering Beta-Cyclodextrins 02 engineering and technology Shewanella putrefaciens 010402 general chemistry 01 natural sciences Biomaterials chemistry.chemical_compound Materials Chemistry Ultraviolet light Photosensitizer Thermal stability Cellulose Photosensitizing Agents biology Chemistry beta-Cyclodextrins Food Packaging 021001 nanoscience & nanotechnology biology.organism_classification 0104 chemical sciences 0210 nano-technology Nuclear chemistry |
| Zdroj: | Biomacromolecules. 22:2790-2801 |
| ISSN: | 1526-4602 1525-7797 |
| DOI: | 10.1021/acs.biomac.1c00165 |
| Popis: | Antibacterial packaging film mediated by photodynamic inactivation (PDI) is a new concept in food industry. The objective of this study was to fabricate a green 2,3-dialdehyde cellulose (DAC)-based antimicrobial film with PDI potency by incorporating the β-cyclodextrin/curcumin (β-CD/Cur) complex as a photosensitizer. The PDI-mediated films were characterized by evaluating the surface morphology, chemical structure, light transmittance, mechanical properties, photochemical and thermal stability, and water solubility. The results showed that the DAC-CD/Cur films were soluble in water and mechanically strong with a tensile strength of 63.87 MPa and an elongation break of 1.32%, which was attributed to the formation of hydrogen bonds between DAC and β-CD/Cur molecules. Meanwhile, the composite films possessed a good light transmittance but impeded the penetration of ultraviolet light and efficiently delayed the degradation of curcumin. More importantly, the PDI-mediated films exhibited a broad-spectrum ability to kill Listeria monocytogenes, Vibrio parahaemolyticus, and Shewanella putrefaciens in pure culture. Notably, they also potently inactivated these harmful bacteria on ready-to-eat salmon with a maximum of ∼4 Log CFU/g (99.99%) reduction after 60 min irradiation (13.68 J/cm2). Therefore, the PDI-mediated DAC-CD/Cur films are novel and promising antimicrobial food packaging films in food industry. |
| Databáze: | OpenAIRE |
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