Quercetin-loaded melanin nanoparticle mediated konjac glucomannan/polycaprolactone bilayer film with dual-mode synergistic bactericidal activity for food packaging.
Int J Biol Macromol
; 276(Pt 2): 133982, 2024 Sep.
Article
in En
| MEDLINE
| ID: mdl-39029854
ABSTRACT
It is still difficult for a single antibacterial modality to realize satisfactory management of bacterial breeding in food preservation. To solve this problem, we developed a photothermal-derived dual-mode synergistic bactericidal konjac glucomannan (KGM)/polycaprolactone (PCL) bilayer film incorporated with quercetin-loaded melanin-like nanoparticles (Q@MNPs). The results showed that the mechanical properties (TS 29.8 MPa, EAB 43.1 %), UV shielding properties, and water resistance (WCA 124.1°, WVP 3.92 g mm/m2 day kPa) of KGM-Q@MNPs/PCL bilayer films were significantly improved. More importantly, KGM-Q@MNPs/PCL bilayer film presented outstanding photothermal inversion and controlled release behavior of Q triggered by near infrared (NIR) radiation, thus contributing to excellent dual-mode synergistic antibacterial properties against E. coli and S. aureus. Meanwhile, the KGM-Q@MNPs/PCL bilayer film possessed good biocompatibility and low toxicity. As a proof-of-concept application, we further verified the significant value of film for the preservation of cherry tomatoes. Since KGM-Q@MNPs/PCL bilayer film showed excellent biodegradability, this work will aid the development of sustainable antibacterial food packaging materials.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Polyesters
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Quercetin
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Staphylococcus aureus
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Food Packaging
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Escherichia coli
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Nanoparticles
/
Mannans
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Melanins
/
Anti-Bacterial Agents
Language:
En
Journal:
Int J Biol Macromol
Year:
2024
Document type:
Article
Affiliation country: