Nanocellulose-tannin films for active packaging

Researchers at the Universidade Federal de Santa Maria in Brazil used cellulose nanofibrils and condensed tannins to prepare a strong, sustainable packaging material. Cellulose nanofibrils provided the physical and mechanical requirements, while the tannin was incorporated due to its antioxidant properties.
The tannin-incorporated cellulose films presented high density and improved surface hydrophobicity, which resulted in a 6-fold enhancement in their air-barrier properties. A slow release of antioxidant components was verified upon soaking, as well as good resistance to several solvents. An article about the research is published in the Journal of Cleaner Production.
Click here for an abstract of the published article.
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