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| 18. |  | FREITAS, L. E. L. de; SILVA, T. S. de C.; FRACALOSSI, D. M. Protein to energy ratios and cost, performance, and ammonia excretion in juvenile jundiá (Rhamdia quelen), South American catfish. Scientia Agricola, v.78, Suppl., e20200288, 2021.| Biblioteca(s): Embrapa Agropecuária Oeste; Embrapa Pesca e Aquicultura. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
20/12/2011 |
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Data da última atualização: |
05/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SOUZA, N. L. G. D.; BRANDAO, H. de M.; OLIVEIRA, L. F. C. de. |
|
Afiliação: |
NELSON LUIS G. D. SOUZA, UFJF; HUMBERTO DE MELLO BRANDAO, CNPGL; LUIZ FERNANDO C. DE OLIVEIRA, UFJF. |
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Título: |
Spectroscopic and thermogravimetric study of chitosan after incubation in bovine rumen. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Journal of Molecular Structure, v. 1005, n. 1/3, p. 186-191, 2011. |
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DOI: |
https://doi.org/10.1016/j.molstruc.2011.08.049 |
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Idioma: |
Inglês |
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Conteúdo: |
Chitosan is a polysaccharide that is found in some fungi but can also be obtained through the deacetylation of chitin. It is a copolymer of 2-amino-2-deoxy-d glucopyranose and 2-acetamido-2-deoxy-d-glucopyranose. Due to its bioactivity, biodegradability, biocompatibility, reactivity of deacetylated amino groups, selective permeability, polyelectrolyte action, and ability to form gel films, the chelation ability and adsorption capacity of this polymer has been studied in several applications. This work investigates the physical and chemical behavior of chitosan that has been exposed to bovine rumen to assess chitosan’s potential as a matrix for drug delivery into the bovine rumen. It was observed a low stability of chitosan in the bovine rumen, indicating that it will be difficult to use in delivery. It was determined that this stability is low due to the breakage of the polymer chain, the loss of the amino and amide groups and glucosyl ring opening. |
|
Palavras-Chave: |
FT-IR; Raman; Thermogravimetric analysis; UV–visible spectroscopy. |
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Thesaurus NAL: |
chitosan; degradation. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
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024 7 $ahttps://doi.org/10.1016/j.molstruc.2011.08.049$2DOI
100 1 $aSOUZA, N. L. G. D.
245 $aSpectroscopic and thermogravimetric study of chitosan after incubation in bovine rumen.$h[electronic resource]
260 $c2011
520 $aChitosan is a polysaccharide that is found in some fungi but can also be obtained through the deacetylation of chitin. It is a copolymer of 2-amino-2-deoxy-d glucopyranose and 2-acetamido-2-deoxy-d-glucopyranose. Due to its bioactivity, biodegradability, biocompatibility, reactivity of deacetylated amino groups, selective permeability, polyelectrolyte action, and ability to form gel films, the chelation ability and adsorption capacity of this polymer has been studied in several applications. This work investigates the physical and chemical behavior of chitosan that has been exposed to bovine rumen to assess chitosan’s potential as a matrix for drug delivery into the bovine rumen. It was observed a low stability of chitosan in the bovine rumen, indicating that it will be difficult to use in delivery. It was determined that this stability is low due to the breakage of the polymer chain, the loss of the amino and amide groups and glucosyl ring opening.
650 $achitosan
650 $adegradation
653 $aFT-IR
653 $aRaman
653 $aThermogravimetric analysis
653 $aUV–visible spectroscopy
700 1 $aBRANDAO, H. de M.
700 1 $aOLIVEIRA, L. F. C. de
773 $tJournal of Molecular Structure$gv. 1005, n. 1/3, p. 186-191, 2011.
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