A multifunctional biogenic films and coatings from synergistic aqueous dispersion of wood-derived suberin and cellulose nanofibers

• Published in: Carbohydrate polymers 2024-08, Vol.338, p.122218-122218, Article 122218
• Main Authors: Qasim, Umair, Sirviö, Juho Antti, Suopajärvi, Terhi, Hu, Liqiu, Pratiwi, Feby W., Lin, Marie Karen Tracy Hong, Anghelescu-Hakala, Adina, Ronkainen, Veli-Pekka, Xu, Chunlin, Liimatainen, Henrikki
• Format: Article
• Language: English
• Subjects: Anti-Bacterial Agents - chemistry; Anti-Bacterial Agents - pharmacology; Antimicrobial; Cellulose - chemistry; Cellulose nanofibril; Deep eutectic solvent; Extract; Food coatings; Food Packaging - methods; Fruit - chemistry; Gram-Negative Bacteria - drug effects; Hydrophobic and Hydrophilic Interactions; Lipids - chemistry; Musa - chemistry; Nanocellulose; Nanofibers - chemistry; Packaging; Viscosity; Water - chemistry; Wood - chemistry
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2024.122218

Here, biogenic and multifunctional active food coatings and packaging with UV shielding and antimicrobial properties were structured from the aqueous dispersion of an industrial byproduct, suberin, which was stabilized with amphiphilic cellulose nanofibers (CNF). The dual-functioning CNF, synthesized in a deep eutectic solvent, functioned as an efficient suberin dispersant and reinforcing agent in the packaging design. The nanofibrillar percolation network of CNF provided a steric hindrance against the coalescence of the suberin particles. The low CNF dosage of 0.5 wt% resulted in dispersion with optimal viscosity (208.70 Pa.s), enhanced stability (instability index of