High-performance carboxymethyl starch/PVA based intelligent packaging films engineered with Cu-Trp nanocrystal as functional compatibilizer.
Food Chem
; 454: 139696, 2024 Oct 01.
Article
in En
| MEDLINE
| ID: mdl-38810446
ABSTRACT
A spindle-like Cu-based framework (Cu-Trp, Trp = L-Tryptophan) nanocrystal with ammonia-responsiveness was fabricated via simple aqueous solution approach, and it was subsequently explored as a functional compatibilizer of carboxymethyl starch/polyvinyl alcohol (CMS/PVA) blend toward constructing high-performance intelligent packaging films. The results showed that incorporation of Cu-Trp nanocrystal into CMS/PVA blend resulted in significant promotions regarding to the compatibility, mechanical strength (42.92 MPa), UV-blocking (with UV transmittance of only 2.4%), and water vapor barrier effectiveness of the blend film. Besides, the constructed CMS/PVA/Cu-Trp nanocomposite film exhibited superb long-term color stability, favorable antibacterial capacity (over 98.0%) toward both E. coli and S. aureus bacteria, as well as color change ability under ammonia environment. Importantly, the application trial confirmed that the CMS/PVA/Cu-Trp nanocomposite film is capable of visually monitoring shrimp spoilage during storage. These results implied that the CMS/PVA/Cu-Trp nanocomposite film holds tremendous potential as an intelligent active packaging material.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Polyvinyl Alcohol
/
Staphylococcus aureus
/
Starch
/
Food Packaging
/
Copper
/
Escherichia coli
/
Anti-Bacterial Agents
Limits:
Animals
Language:
En
Journal:
Food Chem
Year:
2024
Document type:
Article
Country of publication:
Reino Unido