| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
|
Data corrente: |
16/08/2012 |
|
Data da última atualização: |
30/06/2016 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
VIANNA, P. C. B.; WALTER, E. H. M.; DIAS, M. E. F.; FARIA, J. A. F.; NETTO, F. M.; GIGANTE, M. L. |
|
Afiliação: |
P. C. B. VIANNA, UNOPAR; EDUARDO HENRIQUE MIRANDA WALTER, CTAA; M. E. F. DIAS, UNICAMP; J. A. F. FARIA, UNICAMP; FLÁVIA MARIA NETTO, UNICAMP; M. L. GIGANTE, UNICAMP. |
|
Título: |
Effect of addition of CO2 to raw milk on quality of UHT-treated milk. |
|
Ano de publicação: |
2012 |
|
Fonte/Imprenta: |
Journal of Dairy Science, v. 95, n. 8, p. 4256-4262, aug., 2012. |
|
DOI: |
10.3168/jds.2012-5387 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The objective of this study was to evaluate the effect of addition of CO2 to raw milk on UHT milk quality during storage. Control milk (without CO2 addition) and treated milk (with CO2 addition up to pH 6.2) were stored in bulk tanks at 4°C for 6 d. After storage, both samples were UHT processed using indirect heating (140°C for 5 s). Samples were aseptically packed in low-density polyethylene pouches and stored in the dark at room temperature. Raw milk was evaluated upon receipt for physicochemical composition, proteolysis, lipolysis, standard plate count, psychrotrophic bacteria, and Pseudomonas spp. counts, and after 6 d of storage for proteolysis, lipolysis, and microbial counts. After processing, UHT milk samples were evaluated for physicochemical composition, proteolysis, and lipolysis. Samples were evaluated for proteolysis and lipolysis twice a month until 120 d. Peptides from pH 4.6-soluble N filtrates were performed by reversed-phase HPLC after 1 and 120 d of storage. A split-plot design was used and the complete experiment was carried out in triplicate. The results were evaluated by ANOVA and Tukey's test. After 6 d of storage, CO2-treated raw milk kept its physicochemical and microbiological quality, whereas the untreated milk showed significant quality losses. A significant increase in proteolysis occurred during 120 d of storage in both treatments, but the increase occurred 1.4 times faster in untreated UHT milk than in CO2-treated UHT milk. In both UHT milks, the proteolysis was a consequence of the action of plasmin and microbial proteases. However, the untreated UHT milk showed higher microbial protease activity than the treated UHT milk. The addition of CO2 to the raw milk maintained the quality during storage, resulting in UHT milk with less proteolysis and possibly longer shelf life, which is usually limited by age gelation of UHT milk. MenosThe objective of this study was to evaluate the effect of addition of CO2 to raw milk on UHT milk quality during storage. Control milk (without CO2 addition) and treated milk (with CO2 addition up to pH 6.2) were stored in bulk tanks at 4°C for 6 d. After storage, both samples were UHT processed using indirect heating (140°C for 5 s). Samples were aseptically packed in low-density polyethylene pouches and stored in the dark at room temperature. Raw milk was evaluated upon receipt for physicochemical composition, proteolysis, lipolysis, standard plate count, psychrotrophic bacteria, and Pseudomonas spp. counts, and after 6 d of storage for proteolysis, lipolysis, and microbial counts. After processing, UHT milk samples were evaluated for physicochemical composition, proteolysis, and lipolysis. Samples were evaluated for proteolysis and lipolysis twice a month until 120 d. Peptides from pH 4.6-soluble N filtrates were performed by reversed-phase HPLC after 1 and 120 d of storage. A split-plot design was used and the complete experiment was carried out in triplicate. The results were evaluated by ANOVA and Tukey's test. After 6 d of storage, CO2-treated raw milk kept its physicochemical and microbiological quality, whereas the untreated milk showed significant quality losses. A significant increase in proteolysis occurred during 120 d of storage in both treatments, but the increase occurred 1.4 times faster in untreated UHT milk than in CO2-treated UHT milk. In both UHT milks, ... Mostrar Tudo |
|
Palavras-Chave: |
Bactérias psicrotróficas; Gás carbônico; Leite UHT. |
|
Thesagro: |
Proteólise. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
Marc: |
LEADER 02578naa a2200241 a 4500
001 1931404
005 2016-06-30
008 2012 bl --- 0-- u #d
024 7 $a10.3168/jds.2012-5387$2DOI
100 1 $aVIANNA, P. C. B.
245 $aEffect of addition of CO2 to raw milk on quality of UHT-treated milk.
260 $c2012
520 $aThe objective of this study was to evaluate the effect of addition of CO2 to raw milk on UHT milk quality during storage. Control milk (without CO2 addition) and treated milk (with CO2 addition up to pH 6.2) were stored in bulk tanks at 4°C for 6 d. After storage, both samples were UHT processed using indirect heating (140°C for 5 s). Samples were aseptically packed in low-density polyethylene pouches and stored in the dark at room temperature. Raw milk was evaluated upon receipt for physicochemical composition, proteolysis, lipolysis, standard plate count, psychrotrophic bacteria, and Pseudomonas spp. counts, and after 6 d of storage for proteolysis, lipolysis, and microbial counts. After processing, UHT milk samples were evaluated for physicochemical composition, proteolysis, and lipolysis. Samples were evaluated for proteolysis and lipolysis twice a month until 120 d. Peptides from pH 4.6-soluble N filtrates were performed by reversed-phase HPLC after 1 and 120 d of storage. A split-plot design was used and the complete experiment was carried out in triplicate. The results were evaluated by ANOVA and Tukey's test. After 6 d of storage, CO2-treated raw milk kept its physicochemical and microbiological quality, whereas the untreated milk showed significant quality losses. A significant increase in proteolysis occurred during 120 d of storage in both treatments, but the increase occurred 1.4 times faster in untreated UHT milk than in CO2-treated UHT milk. In both UHT milks, the proteolysis was a consequence of the action of plasmin and microbial proteases. However, the untreated UHT milk showed higher microbial protease activity than the treated UHT milk. The addition of CO2 to the raw milk maintained the quality during storage, resulting in UHT milk with less proteolysis and possibly longer shelf life, which is usually limited by age gelation of UHT milk.
650 $aProteólise
653 $aBactérias psicrotróficas
653 $aGás carbônico
653 $aLeite UHT
700 1 $aWALTER, E. H. M.
700 1 $aDIAS, M. E. F.
700 1 $aFARIA, J. A. F.
700 1 $aNETTO, F. M.
700 1 $aGIGANTE, M. L.
773 $tJournal of Dairy Science$gv. 95, n. 8, p. 4256-4262, aug., 2012.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agroindústria de Alimentos (CTAA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Solos. |
|
Data corrente: |
14/03/2011 |
|
Data da última atualização: |
14/03/2011 |
|
Tipo da produção científica: |
Monitoramento/Zoneamento |
|
Autoria: |
ACCIOLY, L. J. de O.; ARAÚJO, A. M.; SILVA, A. B. da. |
|
Afiliação: |
LUCIANO JOSE DE OLIVEIRA ACCIOLY, CNPS; Alex Maurício Araújo, UFPE; ADEMAR BARROS DA SILVA, CNPS. |
|
Título: |
Mapa do potencial natural de erosão da Bacia do Rio Ipojuca Folha SC24-X-B-I - Sertânia. |
|
Ano de publicação: |
2010 |
|
Fonte/Imprenta: |
Recife: Embrapa Solos, 2010. 1 mapa, corlor. Escala: 1:100.000. |
|
Idioma: |
Português |
|
Palavras-Chave: |
Sertânia. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 00464nem a2200133 a 4500
001 1880637
005 2011-03-14
008 2010 bl uuuu u0uu1 u #d
100 1 $aACCIOLY, L. J. de O.
245 $aMapa do potencial natural de erosão da Bacia do Rio Ipojuca Folha SC24-X-B-I - Sertânia.$h[electronic resource]
260 $aRecife: Embrapa Solos, 2010. 1 mapa, corlor. Escala: 1:100.000.$c2010
653 $aSertânia
700 1 $aARAÚJO, A. M.
700 1 $aSILVA, A. B. da
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Solos (CNPS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
