| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
23/11/2023 |
|
Data da última atualização: |
15/01/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
MALAFATTI, J. O. D.; DOMINGUES, M. A.; MEIRELLES, M. R.; PERES, L. G. S.; BRESOLIN, J. D.; PARIS, E. C. |
|
Afiliação: |
Department of Chemistry, Federal University of Sao Carlos; Department of Materials Engineering, Federal University of Sao Carlos; Institute of Chemistry, University of Sao Paulo; Department of Materials Engineering, Federal University of Sao Carlos; JOANA DIAS BRESOLIN, CNPDIA; ELAINE CRISTINA PARIS, CNPDIA. |
|
Título: |
Antifungal and ultraviolet-visible barrier properties in starch films reinforced with CuO nanoparticles. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Journal of Applied Polymer Science, v.140, e54290, 2023. |
|
Páginas: |
14 p. |
|
DOI: |
.https://doi.org/10.1002/app.54290 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract Starch materials are subject to loss of initial characteristics due to the retrogradation degenerative effect, high hygroscopicity, and favoring the growth of the microorganisms, which reduces the shelf life of packaging. In this sense, the insertion of nanoparticulated CuO was evaluated for the best performance. CuO is a semiconductor that can improve optical, mechanical, and antimicrobial properties, enabling excellent promotion of starch films. The hot injection precipitation method was used to obtain CuO nanoparticles in the nanometric scale rapidly. The films were carried out from the starch homogenization in water and urea under temperature, followed by thermopressing at 120C. As a result, the 1% CuO (w w1 ) increased tensile strength from 0.87 ± 0.40 to 1.92 ± 0.09 MPa. Furthermore, the films containing nanoparticles showed a barrier property against radiation in the ultraviolet?visible spectrum, not observed for the micrometric scale. Such results were attributed to the superior opacity of the films generated by nanometric reinforcement. Concerning antimicrobial activity, the films containing CuO showed a fungistatic effect (33%) for the Alternaria alternata fungus, a microorganism very susceptible to carbohydrate-rich sources. Thus, the CuO-reinforced starch films improved physicochemical and biological properties, making them promissory candidates for commercial application. |
|
Palavras-Chave: |
Antifungal; Copper oxide; Fertilizer; Optical. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1158668/1/P-Antifungal-and-ultravioletvisible-barrier-properties-in.pdf
|
|
Marc: |
LEADER 02175naa a2200253 a 4500
001 2158668
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
024 7 $a.https://doi.org/10.1002/app.54290$2DOI
100 1 $aMALAFATTI, J. O. D.
245 $aAntifungal and ultraviolet-visible barrier properties in starch films reinforced with CuO nanoparticles.$h[electronic resource]
260 $c2023
300 $a14 p.
520 $aAbstract Starch materials are subject to loss of initial characteristics due to the retrogradation degenerative effect, high hygroscopicity, and favoring the growth of the microorganisms, which reduces the shelf life of packaging. In this sense, the insertion of nanoparticulated CuO was evaluated for the best performance. CuO is a semiconductor that can improve optical, mechanical, and antimicrobial properties, enabling excellent promotion of starch films. The hot injection precipitation method was used to obtain CuO nanoparticles in the nanometric scale rapidly. The films were carried out from the starch homogenization in water and urea under temperature, followed by thermopressing at 120C. As a result, the 1% CuO (w w1 ) increased tensile strength from 0.87 ± 0.40 to 1.92 ± 0.09 MPa. Furthermore, the films containing nanoparticles showed a barrier property against radiation in the ultraviolet?visible spectrum, not observed for the micrometric scale. Such results were attributed to the superior opacity of the films generated by nanometric reinforcement. Concerning antimicrobial activity, the films containing CuO showed a fungistatic effect (33%) for the Alternaria alternata fungus, a microorganism very susceptible to carbohydrate-rich sources. Thus, the CuO-reinforced starch films improved physicochemical and biological properties, making them promissory candidates for commercial application.
653 $aAntifungal
653 $aCopper oxide
653 $aFertilizer
653 $aOptical
700 1 $aDOMINGUES, M. A.
700 1 $aMEIRELLES, M. R.
700 1 $aPERES, L. G. S.
700 1 $aBRESOLIN, J. D.
700 1 $aPARIS, E. C.
773 $tJournal of Applied Polymer Science$gv.140, e54290, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 2 | |
| 1. |  | NOMI, G. Y; SILVA, A. C. da; DEGENHARDT, J.; SANTOS, P. E. T. dos. Influência de bactérias promotoras de crescimento na germinação, estaquia e enxertia de espécies de eucalipto. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 22., 2023, Colombo. Anais... Colombo: Embrapa Florestas, 2023. p. 15. (Embrapa Florestas. Eventos técnicos & científicos, 1).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
|    |
| Registros recuperados : 2 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
