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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
29/12/2022 |
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Data da última atualização: |
22/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
REIS, C. A.; GUIMARÃES JÚNIOR, M.; MOREIRA, F. K. V.; MARCONCINI, J. M.; VAZ, L. E. V. S. B. |
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Afiliação: |
JOSE MANOEL MARCONCINI, CNPDIA. |
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Título: |
Synthesis and characterization of chitosan/montmorillonite nanocomposites for application as edible coating. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Food Science and Technology International, v. 29, n. 1, 2022. |
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Páginas: |
25 - 39 |
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ISSN: |
1082-0132 |
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DOI: |
10.1177/10820132211057718 |
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Idioma: |
Inglês |
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Conteúdo: |
Edible coating can improve fruits shelf life and, consequently, reduce their waste. Chitosan, which presents a potential for chemical modifications and capacity to form films, can be an alternative for coating due to its biocompatibility, biodegradability, and antimicrobial properties. Chitosan film can be obtained through casting method presenting suitable mechanical properties, such as resistance to traction and elongation, ability to adhere to surfaces and selective permeability to gases, such as O2 and CO2. However, it is highly permeable to water vapor, which can limit its potential coating use. The properties of chitosan films can be improved through the formation of composites by inserting nanoclays as montmorillonite in the polymeric matrix. The objective of this study was to develop and characterize chitosan/montmorillonite nanocomposites for fruit coating aiming for future applications in the field of smart packaging. Nanocomposites were characterized by its microstructure, thermal, mechanical, and physicochemical properties. X-ray diffraction analysis indicated changes in crystallinity with the insertion of montmorillonite. Nanocomposites became more transparent and significantly reduced its water permeability rate with 0.5% w/w montmorillonite addition. Elastic rigidity and tensile strength of the films were improved.Chitosan/montmorillonite nanocomposites demonstrated the potential to improve the storage time ofWilliams pears. |
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Palavras-Chave: |
Biopolymer; Nanoclay. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150487/1/P-Synthesis-and-characterization-of-chitosan.pdf
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Marc: |
LEADER 02169naa a2200229 a 4500
001 2150487
005 2024-01-22
008 2022 bl uuuu u00u1 u #d
022 $a1082-0132
024 7 $a10.1177/10820132211057718$2DOI
100 1 $aREIS, C. A.
245 $aSynthesis and characterization of chitosan/montmorillonite nanocomposites for application as edible coating.$h[electronic resource]
260 $c2022
300 $a25 - 39
520 $aEdible coating can improve fruits shelf life and, consequently, reduce their waste. Chitosan, which presents a potential for chemical modifications and capacity to form films, can be an alternative for coating due to its biocompatibility, biodegradability, and antimicrobial properties. Chitosan film can be obtained through casting method presenting suitable mechanical properties, such as resistance to traction and elongation, ability to adhere to surfaces and selective permeability to gases, such as O2 and CO2. However, it is highly permeable to water vapor, which can limit its potential coating use. The properties of chitosan films can be improved through the formation of composites by inserting nanoclays as montmorillonite in the polymeric matrix. The objective of this study was to develop and characterize chitosan/montmorillonite nanocomposites for fruit coating aiming for future applications in the field of smart packaging. Nanocomposites were characterized by its microstructure, thermal, mechanical, and physicochemical properties. X-ray diffraction analysis indicated changes in crystallinity with the insertion of montmorillonite. Nanocomposites became more transparent and significantly reduced its water permeability rate with 0.5% w/w montmorillonite addition. Elastic rigidity and tensile strength of the films were improved.Chitosan/montmorillonite nanocomposites demonstrated the potential to improve the storage time ofWilliams pears.
653 $aBiopolymer
653 $aNanoclay
700 1 $aGUIMARÃES JÚNIOR, M.
700 1 $aMOREIRA, F. K. V.
700 1 $aMARCONCINI, J. M.
700 1 $aVAZ, L. E. V. S. B.
773 $tFood Science and Technology International$gv. 29, n. 1, 2022.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro |
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URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
15/06/2004 |
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Data da última atualização: |
23/09/2014 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
GUIX, J. C.; NUNES, V. da S.; MIRANDA, J. R. |
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Afiliação: |
1: Universidade de Barcelona; 2: USP; 3: Embrapa-NMA. |
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Título: |
Autochthonous and colonizing species of frogs in Carlos Botelho state reserve, Southeastern Brazil. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
In: Boletin de La Asociacion Herpetologica Espanola, n. 5, p. 8-13, 1994. |
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Descrição Física: |
Canoa, il., A5 |
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Idioma: |
Inglês |
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Palavras-Chave: |
Anfíbios; Brasil; Carlos Botelho; Espécies; Florestas Atlânticas; Reservas ecologicas; São Paulo. |
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Thesagro: |
Biologia. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/108974/1/1428.pdf
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Marc: |
LEADER 00681nam a2200229 a 4500
001 1017249
005 2014-09-23
008 1994 bl uuuu u00u1 u #d
100 1 $aGUIX, J. C.
245 $aAutochthonous and colonizing species of frogs in Carlos Botelho state reserve, Southeastern Brazil.
260 $aIn: Boletin de La Asociacion Herpetologica Espanola, n. 5, p. 8-13$c1994
300 $cCanoa, il., A5
650 $aBiologia
653 $aAnfíbios
653 $aBrasil
653 $aCarlos Botelho
653 $aEspécies
653 $aFlorestas Atlânticas
653 $aReservas ecologicas
653 $aSão Paulo
700 1 $aNUNES, V. da S.
700 1 $aMIRANDA, J. R.
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Embrapa Territorial (CNPM) |
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