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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
06/05/2016 |
Data da última atualização: |
24/03/2022 |
Autoria: |
COSTA, E. O.; RIBEIRO, A. R.; MELVILLE, P. A.; SANTIS-PRADA, M. |
Título: |
Avaliação da eficácia da anti-sepsia pós-ordenha no controle de mastite aplicando o modelo "split herd". |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Revista Napgama, v. 2, n. 2, p. 4-9, mar./abr. 1999. |
Idioma: |
Português |
Palavras-Chave: |
Assepsia; Controle; Pos-dipping; Pos-dipping teat; Pós-ordenha; Split herd. |
Thesagro: |
Desinfecção; Desinfetante; Mamite. |
Thesaurus Nal: |
Antiseptics; Mastitis. |
Categoria do assunto: |
H Saúde e Patologia |
Marc: |
LEADER 00764naa a2200277 a 4500 001 2044526 005 2022-03-24 008 1999 bl uuuu u00u1 u #d 100 1 $aCOSTA, E. O. 245 $aAvaliação da eficácia da anti-sepsia pós-ordenha no controle de mastite aplicando o modelo "split herd". 260 $c1999 650 $aAntiseptics 650 $aMastitis 650 $aDesinfecção 650 $aDesinfetante 650 $aMamite 653 $aAssepsia 653 $aControle 653 $aPos-dipping 653 $aPos-dipping teat 653 $aPós-ordenha 653 $aSplit herd 700 1 $aRIBEIRO, A. R. 700 1 $aMELVILLE, P. A. 700 1 $aSANTIS-PRADA, M. 773 $tRevista Napgama$gv. 2, n. 2, p. 4-9, mar./abr. 1999.
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Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agroindústria de Alimentos; Embrapa Agroindústria Tropical. |
Data corrente: |
01/10/2020 |
Data da última atualização: |
02/10/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
SANTOS, K. P. dos; SILVA, C. M.; BRIGIDA, A. I. S.; GONÇALVES, L. R. B. |
Afiliação: |
Kimberle Paiva dos Santos, Universidade Federal do Ceará; CAROLINE MELLINGER SILVA, CTAA; ANA IRAIDY SANTA BRIGIDA, CNPAT; Luciana Rocha Barros Gonçalves, Universidade Federal do Ceará. |
Título: |
Modifying alcalase activity and stability by immobilization onto chitosan aiming at the production of bioactive peptides by hydrolysis of tilapia skin gelatin. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Process biochemistry, v. 97, p. 27-36, 2020. |
DOI: |
https://doi.org/10.1016/j.procbio.2020.06.019 |
Idioma: |
Inglês |
Conteúdo: |
The protease from Bacillus licheniformis, commercially known as Alcalase (R), was insolubilized and stabilized by immobilization onto activated chitosan. Activation with different agents, such as glutaraldehyde (GLU-Chi), glyoxyl (GLY-Chi) and divinyl sulfone (DVS-Chi) was investigated. The effect of the immobilization protocol, for instance different pH and times, were also evaluated. GLU-Chi showed the highest activity (35.6UNPA/g) with the smallest substrate (N-Boc-L-alanine p-nitrophenyl-ester, NPA), while GLY-Chi showed the highest activity (1.5 UAzocasein/g) using the greatest substrate (azocasein). A 24-h immobilization period was enough to stabilize the enzyme using the three supports under almost all conditions. Operational stability in azocasein hydrolysis was assayed and GLU-Chi showed no activity loss during 5 cycles. DVS-Chi retained around 70 % of its initial activity after the fifth cycle, whereas GLY-Chi activity retained only 10 %. Finally, the biocatalysts were used in the hydrolysis of tilapia skin gelatin aiming the production of peptides with antioxidant activity. The protein hy-drolysates obtained using GLU-Chi presented the highest antioxidant activity (36.7 mu M Trolox Eq). However, the best results of operational stability were obtained using DVS-Chi, which did not lose its initial activity after 3 consecutive cycles of gelatin hydrolysis. |
Palavras-Chave: |
Alcalase; Immobilization; Skin gelatin; Stability. |
Thesagro: |
Tilápia. |
Thesaurus NAL: |
Chitosan; Food technology; Protein hydrolysates. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02237naa a2200265 a 4500 001 2125212 005 2020-10-02 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.procbio.2020.06.019$2DOI 100 1 $aSANTOS, K. P. dos 245 $aModifying alcalase activity and stability by immobilization onto chitosan aiming at the production of bioactive peptides by hydrolysis of tilapia skin gelatin.$h[electronic resource] 260 $c2020 520 $aThe protease from Bacillus licheniformis, commercially known as Alcalase (R), was insolubilized and stabilized by immobilization onto activated chitosan. Activation with different agents, such as glutaraldehyde (GLU-Chi), glyoxyl (GLY-Chi) and divinyl sulfone (DVS-Chi) was investigated. The effect of the immobilization protocol, for instance different pH and times, were also evaluated. GLU-Chi showed the highest activity (35.6UNPA/g) with the smallest substrate (N-Boc-L-alanine p-nitrophenyl-ester, NPA), while GLY-Chi showed the highest activity (1.5 UAzocasein/g) using the greatest substrate (azocasein). A 24-h immobilization period was enough to stabilize the enzyme using the three supports under almost all conditions. Operational stability in azocasein hydrolysis was assayed and GLU-Chi showed no activity loss during 5 cycles. DVS-Chi retained around 70 % of its initial activity after the fifth cycle, whereas GLY-Chi activity retained only 10 %. Finally, the biocatalysts were used in the hydrolysis of tilapia skin gelatin aiming the production of peptides with antioxidant activity. The protein hy-drolysates obtained using GLU-Chi presented the highest antioxidant activity (36.7 mu M Trolox Eq). However, the best results of operational stability were obtained using DVS-Chi, which did not lose its initial activity after 3 consecutive cycles of gelatin hydrolysis. 650 $aChitosan 650 $aFood technology 650 $aProtein hydrolysates 650 $aTilápia 653 $aAlcalase 653 $aImmobilization 653 $aSkin gelatin 653 $aStability 700 1 $aSILVA, C. M. 700 1 $aBRIGIDA, A. I. S. 700 1 $aGONÇALVES, L. R. B. 773 $tProcess biochemistry$gv. 97, p. 27-36, 2020.
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