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Nanocelulosa Bacteriana Funcionalizada con Grafito y Pentóxido de Niobio: Efectos Antimicrobianos Limitados y
Juliana Silva Ribeiro de Andrade1, Adriana Poli Castilho Dugaich1, Andressa da Silva Barboza1
1Department of Dentistry, Federal University of Santa Catarina (UFSC), Florianópolis 88040-535, SC, Brazil.
Membranes
|January 27, 2026
Resumen
La nanolcelulosa bacteriana (BNC) modificada con grafito funcionalizado (f-Gr) muestra promesa como apósito antimicrobiano para heridas, reduciendo eficazmente el crecimiento bacteriano. El pentóxido de niobio (Nb2O5) no mejoró significativamente estos efectos.
Área de la Ciencia:
- Ingeniería de Biomateriales
- Nanotecnología
- Investigación de Enfermedades Infecciosas
Sus antecedentes:
- Las heridas crónicas presentan desafíos debido a la inflamación persistente y la alta carga microbiana.
- La nanolcelulosa bacteriana (BNC) ofrece biocompatibilidad pero carece de propiedades antimicrobianas inherentes.
- Se necesitan apósitos novedosos para combatir las infecciones de heridas manteniendo la biocompatibilidad.
Objetivo del estudio:
- Diseñar y evaluar membranas de BNC funcionalizadas con grafito funcionalizado (f-Gr) y/o pentóxido de niobio (Nb2O5) para aplicaciones de apósitos antimicrobianos para heridas.
- Evaluar las propiedades fisicoquímicas y la eficacia antimicrobiana de los materiales de BNC modificados.
- Determinar la biocompatibilidad de los compuestos desarrollados a base de BNC.
Principales métodos:
- Las membranas de BNC se post-funcionalizaron con f-Gr y/o Nb2O5.
- Caracterización fisicoquímica mediante Raman, FTIR-ATR, XRD y SEM.
- Los ensayos microbiológicos evaluaron la proliferación bacteriana contra Staphylococcus aureus.
- Los ensayos de citotoxicidad evaluaron la biocompatibilidad del material.
Principales resultados:
- Los análisis fisicoquímicos confirmaron la incorporación de f-Gr y Nb2O5 en la matriz de BNC.
- BNC/f-Gr demostró una actividad antimicrobiana moderada y dependiente del contacto, particularmente contra Staphylococcus aureus.
- El Nb2O5 por sí solo no mejoró significativamente el rendimiento antimicrobiano.
- Los ensayos de citotoxicidad mostraron una buena biocompatibilidad para BNC, BNC/f-Gr y BNC/Nb2O5.
Conclusiones:
- La BNC funcionalizada con f-Gr es un candidato prometedor para apósitos antimicrobianos para heridas.
- El Nb2O5 no mejoró la actividad antimicrobiana en las condiciones probadas y requiere una mayor optimización.
- El material BNC/f-Gr desarrollado ofrece una solución potencial para el manejo de infecciones de heridas crónicas.
Palabras clave:
antimicrobianonanocelulosa bacterianacompuestos bioactivosbiomaterialesheridas crónicascitocompatibilidadgrafito funcionalizadopentóxido de niobiocaracterización espectroscópicaMás Videos Relacionados
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