The aging analysis of natural rubber-Copaifera oblongifolia extract membranes.

Autor: Hochberger LC; Laboratório de Biologia Vascular e Histopatologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso/UFMT, Barra do Garças, Mato Grosso, Brazil., Junior JM; Laboratório de Biologia Vascular e Histopatologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso/UFMT, Barra do Garças, Mato Grosso, Brazil., Gama LA; Laboratório de Biologia Vascular e Histopatologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso/UFMT, Barra do Garças, Mato Grosso, Brazil., Arrais-Silva WW; Laboratório de Parasitologia, Departamento de Morfologia, Centro de Ciências Biológicas e da Saúde, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil., de Souza NC; Laboratório de Nanosistemas e Tecnologias, Universidade Federal de Goiás, Ap. de Goiânia, Goiás, Brazil., de Souza Souto PC; Laboratório de Biologia Vascular e Histopatologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso/UFMT, Barra do Garças, Mato Grosso, Brazil. Electronic address: paula.souto@ufmt.br.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2023 Apr 30; Vol. 235, pp. 123742. Date of Electronic Publication: 2023 Feb 17.
DOI: 10.1016/j.ijbiomac.2023.123742
Abstrakt: Natural rubber (NR), derived from Hevea brasiliensis, has properties for biomedical applications. Several studies indicate that these properties can be amplified when we associate another bioproduct. However, there are no studies of aging aspects of this biomaterial regarding changes in functionality, structure and composition. The objective was to evaluate the aging process of natural rubber membranes - copaiba (NRC) subjected to controlled conditions of time, light and presence of oxygen. The NRC was prepared and stored in the presence or absence of light and vacuum, for periods of 30, 60 and 90 days. Subsequently, the membranes were characterized through the techniques of wettability, infrared spectroscopy, thermal analysis, scanning microscopy and antioxidant activity. The wettability analysis, showed that NRC membranes both in the zero time and in the aging time were hydrophilic. Through thermogravimetric analysis and differential exploratory analysis the membranes remained thermally stable. The scanning electronic microscopy, indicated no morphological alterations during the observed period. After 90 days, the packaged membranes showed satisfactory antioxidant activity. Our results suggest that the membranes were resistant to the storage period, since they maintained their chemical, thermal, morphological and antioxidant characteristics. Hence, it corroborates to use of membranes as a possible curative for biomedical applications.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Luana Caroline Hochberger reports financial support was provided by Coordination of Higher Education Personnel Improvement. Loyane Almeida Gama reports financial support was provided by Foundation for Research Support of Mato Grosso State. Paula Cristina de Souza Souto reports a relationship with Federal University of Mato Grosso that includes: employment. Wagner Welber Arrais-Silva reports a relationship with Federal University of Sergipe that includes: employment. Nara Cristina de Souza reports a relationship with Federal University of Goias that includes: employment.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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