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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 |
Voltar
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Unidades Centrais. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
06/07/1993 |
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Data da última atualização: |
28/06/2011 |
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Autoria: |
PALMA VALDERRAMA, V. F.; SILVA, R. J. B. da; MOTA, M. M. |
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Afiliação: |
EMBRAPA-DDM. |
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Título: |
O programa nacional de pesquisa em energia na agricultura: principais aspectos econômicos. |
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Ano de publicação: |
0 |
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Fonte/Imprenta: |
Brasília, DF: EMBRAPA-DDM, [19--]. |
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Páginas: |
37 p. |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado na XII Reuniao Anual da Associacao Argentina de Economia Agraria-AAEA. Salta, Argentina, 1981. |
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Conteúdo: |
Diagnostico da situacao energetica do Brasil e a participacao da agricultura; Contribuicao da pesquisa em energia na agricultura; O modelo nacional de producao, distribuicao e consumo de energia derivada de biomassa. |
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Palavras-Chave: |
Aspecto economico; Economic situation. |
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Thesagro: |
Agricultura; Energia. |
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Thesaurus NAL: |
agriculture; energy. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00947nam a2200229 a 4500
001 1094729
005 2011-06-28
008 bl uuuu u0uu1 u #d
100 1 $aPALMA VALDERRAMA, V. F.
245 $aO programa nacional de pesquisa em energia na agricultura$bprincipais aspectos econômicos.
260 $aBrasília, DF: EMBRAPA-DDM, [19--].$c0
300 $a37 p.
500 $aTrabalho apresentado na XII Reuniao Anual da Associacao Argentina de Economia Agraria-AAEA. Salta, Argentina, 1981.
520 $aDiagnostico da situacao energetica do Brasil e a participacao da agricultura; Contribuicao da pesquisa em energia na agricultura; O modelo nacional de producao, distribuicao e consumo de energia derivada de biomassa.
650 $aagriculture
650 $aenergy
650 $aAgricultura
650 $aEnergia
653 $aAspecto economico
653 $aEconomic situation
700 1 $aSILVA, R. J. B. da
700 1 $aMOTA, M. M.
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Embrapa Unidades Centrais (AI-SEDE) |
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