259 resultados para Índice de acidez
em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"
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The aim of this study was to evaluate the effects of fish oil acidity on the growth of pacu (Piaractus mesopotamicus) juveniles. Two hundred juveniles with 10.530.65 g of weight and 8.740.13 cm of total length, were distributed in a totally randomized design in 20, 0.15 m3 meshmade tanks placed in a 25 m3 holding tank. Extruded commercial diets sprayed with soybean oil (control) with acidity index of 0.24 and fish oil with acidity index of 1.48, 6.40 and 9.85 were used. The fish were fed four times a day until apparent satiety. Productive performance, centesimal composition and blood biochemistry were analysed. At the end of the feeding period none of the analyzed parameters was affected by the use of acidified fish oil. Therefore, fish oil may be supplied to the pacu juveniles regardless of their pH.
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Fundao de Amparo Pesquisa do Estado de So Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)
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No presente trabalho, estudou-se o processamento das vsceras de frango (Gallus domesticus) e das ratitas avestruz (Struthio camellus) e ema (Rhea americana), processadas da mesma forma, com o objetivo de elaborar farinhas. A qualidade e controle de produo dessas farinhas foram avaliados por meio de parmetros tecnolgicos exigidos pela legislao vigente. Basicamente, a matria-prima foi cozida e esterilizada, filtrada em peneira (para a separao do leo), moda, seca em estufa e analisada. Foram obtidos dados de rendimentos de produo, de composio de nutrientes, de digestibilidade em pepsina, do valor calrico, determinados os teores de clcio e fsforo, e realizados estudos da estabilidade da farinha durante o armazenamento (Salmonella, pH, ndice de acidez e TBA). Os resultados mostraram que a produo de farinha pelo processamento das vsceras de avestruz e ema vivel, seus parmetros de qualidade atendem, em grande parte, s exigncias, mas, para um emprego imediato (uso regular) na elaborao de raes, necessita de alguns ajustes (correes) de parmetros fsico-qumicos (nutrientes).
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Coordenao de Aperfeioamento de Pessoal de Nvel Superior (CAPES)
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Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)
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Coordenao de Aperfeioamento de Pessoal de Nvel Superior (CAPES)
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Ps-graduao em Engenharia e Cincia de Alimentos - IBILCE
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Ps-graduao em Agronomia (Energia na Agricultura) - FCA
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Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)
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Ps-graduao em Agronomia (Energia na Agricultura) - FCA
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Ps-graduao em Qumica - IQ
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Ps-graduao em Medicina Veterinria - FMVZ
Qualidade do leo bruto de gros de crambe (Crambe abyssinica Hochst) sob diferentes mtodos de secagem
Resumo:
The Culture of crambe became promising since its grains presents high oil content. The methods of drying may influence the quality of crude oil extracted from the beans, depending on the way it is managed. This study goal was to evaluate the influence of different drying methods on the quality of the crude oil extracted from crambe grain. The experimental design was completely randomized with five treatments (drying with heated air, natural air, yard, shade, and at the field), and with four tests for each. In order to check the quality of the grains, we performed an analysis of fat acidity, and to evaluate the crude oil quality, we conducted analysis of iodine value, acid value, water content, density at 20C, and a kinematic viscosity at 40. After obtaining the data, the results were submitted to analysis of variance. When significant means were detected, they were compared by t-test (p 0.05). The method of drying with heated air provided a lower rate of fatty acid in grains. The drying methods evaluated did not compromise the quality of the oil extracted from the crambe grain.
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Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)