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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Caracterização e ocorrência de carne pálida em frangos de corte e seu efeito na elaboração de produtos industrializados /

Komiyama, Claudia Marie, 1978- January 2006 (has links)
Orientador: Ariel Antonio Mendes / Banca: Roberto de Oliveira Roça / Banca: Edson Gonçalves de Oliveira / Abstract: It was undertaken two assays aiming to evaluate quality characteristics of broiler pale-colour meat and compare to normal-colour meat (assay 1), and evaluate sensorial differences between these meat types (assay 2). For assay 1, it was collected 52 pale and normal fillets from a slaughtering line, based on fillet colouration. It was measured pH, temperature, colour and R value on different times post mortem (0, four, 24 hours). Samples were send to the laboratory of FMVZ/UNESP, Botucatu campus, and after 24 hours post mortem it was evaluated the remaining meat quality parameters (drip loss, retention and absorption water capacity, denaturation protein, cocking loss and texture. For assay 2, it was collected 40 each pale and normal fillets from a commercial slaughtering and after 24 hours post mortem it was realized the evaluation of sensorial characteristics. For breast fillets of broilers with pale colouration, glycolysis had started with 6,86 pH value and reached to final pH of 5,73 at 24 hours post mortem while normal colouration ones presented initial pH of 6,80 and final pH, after 24 hours post mortem of 5,85. It was observed difference (p 0,05) between pale and normal fillets for pH, L * value, redness, CRA, PPC and protein denaturation. / Resumo: Foram realizados dois ensaios, sendo que o Ensaio 1 teve por objetivo avaliar as características de qualidade da carne de frangos de corte de coloração pálida e comparar com a de coloração normal e, o Ensaio 2, avaliar as diferenças sensoriais destes tipos de carnes. Para o Ensaio 1, foram coletados 52 filés pálidos e normais selecionados na linha de abate baseado pela sua coloração. Foi realizada a mensuração do pH, temperatura, cor e valor R nos tempos de zero, 4 e 24 horas post-mortem. As amostras foram encaminhadas ao laboratório da FMVZ/UNESP, campus de Botucatu e após 24 horas post-mortem procedeu-se as demais análises de qualidade de carne em que foram avaliadas as características de perda por exsudação, capacidade de retenção (CRA) e absorção de água, perdas de peso por cozimento (PPC) e força de cisalhamento. Para o Ensaio 2, foram coletados 40 filés pálidos e normais de abatedouro comercial, e após 24 horas post-mortem procedeu-se a avaliação das características sensoriais. Para os filés de peitos de frangos de coloração pálida, a glicólise teve inicio com o valor de pH 6,86 e atingiu pH final 5,73 às 24 horas post-mortem enquanto que os filés de peitos de coloração normal apresentaram pH inicial de 6,80 e pH 24 horas post-mortem de 5,85. Houve diferença significativa (p 0,05) entre os filés pálidos e normal para os parâmetros de pH, valor L*, teor de vermelho, CRA, PPC e desnaturação protéica. / Mestre

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