Poly-(lactic acid) composite films comprising carvacrol and cellulose nanocrystal-zinc oxide with synergistic antibacterial effects
Copyright © 2024 Elsevier B.V. All rights reserved..
Herein, carvacrol (CRV) and modified cellulose nanocrystal-zinc oxide (CNC-ZnO) were incorporated into a poly (lactic acid) (PLA) matrix to prepare a PLA-based composite film using a simple solution casting method to achieve antimicrobial effects for application in antimicrobial food packaging. Compared with films obtained from neat PLA, the PLACRV20%@CNC-ZnO3% composite film shows better performance in terms of mechanical properties, ultraviolet (UV) blocking, and antimicrobial effects. The PLA composites containing CRV and 3 wt% CNC-ZnO blends exhibit improved tensile strength (21.8 MPa) and elongation at break (403.1 %) as well as excellent UV resistance. In particular, CRV and the CNC-ZnO hybrid endow the obtained PLA composite films with a synergistic antibacterial effect, resulting in good antibacterial properties for microbes, such as Escherichia coli, Staphylococcus aureus and Aspergillus niger. The diameters of the inhibition zone of the PLA@CRV20%@CNC-ZnO3% composite films against E. coli, S. aureus, and A. niger were 4.9, 5.0, and 3.4 cm, respectively. Appling the PLA@CRV20%@CNC-ZnO3% composite film as an antibacterial food packaging material, the storage period for strawberries was considerably extended. This study provides a theoretical basis for developing new organic/inorganic composite antimicrobial film materials from PLA.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:266 |
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| Enthalten in: |
International journal of biological macromolecules - 266(2024), Pt 1 vom: 22. März, Seite 130937 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zheng, Hao [VerfasserIn] |
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| Links: |
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| Themen: |
Cellulose nanocrystal hybrids |
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| Anmerkungen: |
Date Revised 31.03.2024 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1016/j.ijbiomac.2024.130937 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM370108698 |
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| 500 | |a published: Print-Electronic | ||
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| 520 | |a Copyright © 2024 Elsevier B.V. All rights reserved. | ||
| 520 | |a Herein, carvacrol (CRV) and modified cellulose nanocrystal-zinc oxide (CNC-ZnO) were incorporated into a poly (lactic acid) (PLA) matrix to prepare a PLA-based composite film using a simple solution casting method to achieve antimicrobial effects for application in antimicrobial food packaging. Compared with films obtained from neat PLA, the PLACRV20%@CNC-ZnO3% composite film shows better performance in terms of mechanical properties, ultraviolet (UV) blocking, and antimicrobial effects. The PLA composites containing CRV and 3 wt% CNC-ZnO blends exhibit improved tensile strength (21.8 MPa) and elongation at break (403.1 %) as well as excellent UV resistance. In particular, CRV and the CNC-ZnO hybrid endow the obtained PLA composite films with a synergistic antibacterial effect, resulting in good antibacterial properties for microbes, such as Escherichia coli, Staphylococcus aureus and Aspergillus niger. The diameters of the inhibition zone of the PLA@CRV20%@CNC-ZnO3% composite films against E. coli, S. aureus, and A. niger were 4.9, 5.0, and 3.4 cm, respectively. Appling the PLA@CRV20%@CNC-ZnO3% composite film as an antibacterial food packaging material, the storage period for strawberries was considerably extended. This study provides a theoretical basis for developing new organic/inorganic composite antimicrobial film materials from PLA | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Cellulose nanocrystal hybrids | |
| 650 | 4 | |a Packaging applications | |
| 650 | 4 | |a Poly-(lactic acid) composites | |
| 700 | 1 | |a Chen, Lei |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Tianhao |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Mengyao |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Yueqiang |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Guoying |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Hangqi |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Pengrui |e verfasserin |4 aut | |
| 700 | 1 | |a Fu, Shaotong |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Yanhua |e verfasserin |4 aut | |
| 700 | 1 | |a Shen, Jun |e verfasserin |4 aut | |
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