RT Journal Article
T1 Characterization of active films of chitosan containing nettle Urtica dioica L. extract: Spectral and water properties, microstructure, and antioxidant activity
A1 Flórez, María
A1 Cazón Díaz, Patricia
A1 Vázquez Vázquez, Manuel
K1 Nettle extract
K1 Chitosan
K1 Active packaging
AB Chitosan films enriched with aqueous nettle extract (Urtica dioica L.) were evaluated by measuring their solubility, equilibrium moisture, water vapor permeability, spectral and antioxidant properties, and microstructure. Nettle extract showed a significant effect on the analyzed film properties. The addition of nettle extract manifested a sharp decrease in water vapor permeability, decreasing from 5.64 · 10−11 to 2.22 · 10−11 g/m·s·Pa. The chitosan- nettle extract films exhibited a high free-radical scavenging activity against 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). Incorporation of nettle extract into the chitosan matrix was successfully carried out to obtain antioxidant films. The results obtained showed that the incorporation of nettle extract allowed obtaining chitosan films with antioxidant properties, including a total phenolic content up to 1.57 mg GAE/g film. Furthermore, the films with nettle extract boast an UV shielding ability with transmittance values close to zero in the UV region and a water solubility up to 1 %. The inherent biodegradability is also a strong advantage of the developed active films
PB Elsevier
SN 0141-8130
YR 2023
FD 2023
LK http://hdl.handle.net/10347/33242
UL http://hdl.handle.net/10347/33242
LA eng
NO International Journal of Biological Macromolecules, Volume 253, Part 6, 2023, 127318
NO The authors appreciate the funding support of Xunta de Galicia, within the postdoctoral fellowship granted to Patricia Cazón Díaz (No. ED481B-2021-040). We acknowledge the use of RIAIDT-USC analytical facilities
DS Minerva
RD 24 abr 2026