Data/hora: 10/06/2024 05:43:05

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 14/06/2021
Data da última atualização: | 21/06/2021
Autoria: | ALIABADI, M.; CHEE, B. S.; MATOS, M.; CORTESE, Y. J.; NUGENT, M. J. D.; LIMA, T. A. M. de; MAGALHAES, W. L. E.; LIMA, G. G. de; FIROUZABADI, M. D.
Afiliação: | MEYSAM ALIABADI, Gorgan University of Agricultural Sciences and Natural Resources; BOR SHIN CHEE, Materials Research Institute, Athlone Institute of Technology; MAILSON MATOS, Doutorando da UFPR; YVONNE J. CORTESE, Materials Research Institute, Athlone Institute of Technology; MICHAEL J. D. NUGENT, Materials Research Institute, Athlone Institute of Technology; TIELIDY A. M. DE LIMA, Materials Research Institute, Athlone Institute of Technology; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; GABRIEL GOETTEN DE LIMA, Materials Research Institute, Athlone Institute of Technology; MOHAMMADREZA DEHGHANI FIROUZABADI, Gorgan University of Agricultural Sciences and Natural Resources.
Título: | Microfibrillated cellulose films containing chitosan and tannic acid for wound healing applications.
Ano de publicação: | 2021
Fonte/Imprenta: | Journal of Materials Science. Materials in Medicine, v. 32, n. 6, article 67, June 2021. 12 p.
DOI: | https://doi.org/10.1007/s10856-021-06536-4
Idioma: | Inglês
Conteúdo: | The effectiveness of tannic acid as antimicrobial and wound healing for burns have been shown for a century; however, uncontrolled target dosage may result in undesirable side-effects. Remarkably, tannic acid polyphenols compounds crosslinked with polymeric materials produce a strong composite containing the beneficial properties of this tannin. However, investigation of the crosslink structure and its antibacterial and regenerative properties are still unknown when using nanocellulose by mechanical defibrillation; additionally, due to the potential crosslink structure with chitosan, its structure can be complex. Therefore, this work uses bleach kraft nanocellulose in order to investigate the effect on the physical and regenerative properties when incorporated with chitosan and tannic acid. This film results in increased rigidity with a lamellar structure when incorporated with tannic acid due to its strong hydrogen bonding. The release of tannic acid varied depending on the structure it was synthesised with, whereas with chitosan it presented good release model compared to pure cellulose. In addition, exhibiting similar thermal stability as pure cellulose films with antibacterial properties tested against S. aureus and E. coli with good metabolic cellular viability while also inhibiting NF-?B activity, a characteristic of tannic acid.
Palavras-Chave: | Antibacterial property; Antioxidant; Celulose microfibrilada; Membrane functionalization; Nanocellulose; Nanocelulose; Propriedade antibacterial; Slow-release.
Thesagro: | Antioxidante.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (57743-1) - UPC - AP - DD -  -  -  - DIS