De residuo a empaque activo: nanocelulosa de hojas de mazorca y nanopartículas de ZnO en matrices de gelatina

Eduart Gutierrez-Pineda; Laura María  Reyes Méndez; Martha Barrera Hernández; Monica Lucia Salazar Acevedo

doi:10.22490/ECBTI.9992

Vol. 6 No. 1 (2025)

Published 2025-10-21

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Artículos

From waste to active packaging: nanocellulose from corn husk leaves and ZnO nanoparticles in gelatin matrices

DOI: https://doi.org/10.22490/ECBTI.9992

Eduart Gutierrez-Pineda Universidad Nacional Abierta y a Distancia – UNAD

Laura María Reyes Méndez Universidad Nacional Abierta y a Distancia – UNAD

Martha Barrera Hernández Universidad Nacional Abierta y a Distancia – UNAD

Monica Lucia Salazar Acevedo Universidad Nacional Abierta y a Distancia – UNAD

Pre-print (Spanish)

Abstract
References

This working paper explores the valorization of agroindustrial residues through the development of active gelatin films reinforced with TEMPO-oxidized cellulose nanofibers (TOCNF) derived from corn husk leaves and in situ decorated with zinc oxide nanoparticles (NPs-ZnO). Corn husk biomass was first delignified by alkaline hydrogen peroxide (AHP) pretreatment, yielding cellulose-rich solids that were subsequently oxidized via the TEMPO pathway to obtain TOCNF. The nanofiber suspensions exhibited a high carboxylate content (~2.2 mmol g⁻¹) and zeta potential ≈ −50 mV, indicative of robust colloidal stability and network-forming capability. Sono-chemical decoration with NPs-ZnO was confirmed by XPS (Zn ~0.27 at.%). Cast films (gelatin/TOCNF and gelatin/TOCNF–ZnO) were homogeneous (0.25–0.50 mm) and displayed FTIR signatures consistent with gelatin amide bands and TOCNF carboxylate groups, evidencing good phase integration. In preliminary antimicrobial assays, NPs-ZnO-containing films inhibited Bacillus cereus, while no detectable effect against Escherichia coli was observed under the tested conditions, suggesting Gram-type-dependent responses and the need to optimize ZnO loading and dispersion. Overall, these early results support the potential of gelatin–TOCNF–ZnO systems as active food-packaging materials for meat products. As this is a working paper, a multifactor ANOVA and comprehensive evaluation of barrier and mechanical properties are in progress to guide formulation optimization.

keywords: TEMPO-oxidized cellulose nanofibers (TOCNF), Antimicrobial food packaging, Zinc oxide nanoparticles (ZnO)

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How to Cite

Gutierrez-Pineda, E., Reyes Méndez, L. M., Barrera Hernández, M., & Salazar Acevedo, M. L. (2025). From waste to active packaging: nanocellulose from corn husk leaves and ZnO nanoparticles in gelatin matrices. Documentos De Trabajo ECBTI, 6(1). https://doi.org/10.22490/ECBTI.9992

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