Perfil de ácidos graxos de carne de búfalos terminados em sistemas tradicional e silvipastoril.

The aim of this study was to evaluate the fatty acid profile of the meat of buffalo finished in creating Traditional Systems (ST) and Silvopastoral (SSP) with supplemental feeding. The experiments were performed in the Research Units Animal "Senator Álvaro Adolpho", silvopastoral system and "Dr. Philibert Camargo, "traditional system of creation, belonging to Embrapa Amazônia Oriental, Belém-Pará, Brazil. After the fattening period, eight months, the animals were slaughtered at a commercial abattoir and their carcasses identified, refrigerated for 24 hours. The Longissimus dorsi (kebabs) retained the right half carcass between the 12th and 10th ribs, was ground and stored for determination of acids in lipids extracted from samples and cold reading esters performed by gas chromatography. The experimental design was completely randomized, the data were evaluated by ANOVA and means were compared by 't' test at 5% significance level. The analysis of fatty acid profile reveals a statistical difference (P <0.05), only the percentage of myristic acid (C14: 0) and polyunsaturated fatty acids. In conclusion, therefore, that breeding systems and supplementation are not sufficient to indicate the use of either system, since it must be taken into account also the environmental, social and economic

Composição centesimal, física e sensorial de carne de búfalos terminados em sistema tradicional e silvipastoril na Amazônia Oriental.

The aim of this study was to evaluate the physical and sensory characteristics of buffalo meat ended Traditional Systems and Silvopastoral. The experiments were performed in the Research Units Animal "Senator Álvaro Adolpho", SSP installed and "Dr. Philibert Camargo "(ST), belonging to Embrapa Amazônia Oriental, Belém-Pará. After this period the animals were slaughtered at a commercial packing plant and their carcasses were identified and cooled for 24 hours. The right side carcass was cut between the 12th and 13th ribs and removed the Longissimus dorsi (kebabs), for analysis of pH, texture and color lenses, weight loss by cooking, ability to retain water, determining the composition proximate and sensory evaluation. The experimental design was completely randomized, the data submitted to analysis of variance and means were compared by 't' test at 5%. There were no differences (p> 0.05) in chemical composition and physical analysis between meat derived from animals of the two systems. Among the evaluated sensory only the "aroma" differed statistically. It is still early to suggest the use of either system, just based on the quality of meat produced, should be considered also the environmental, social and economic

Sistemas silvipastoril e tradicional na Amazônia Oriental - produção e qualidade da carcaça e carne de búfalos.

Objetivou-se avaliar comparativamente as características físicas e físico-químicas das carcaças de búfalos (Bubalus bubalis), Murrah/Mediterrâneo, terminados em Sistema Tradicional, com pastagem cultivada e suplementação mineral, com animais terminados em Sistema Silvipastoril, com suplementação mineral e ração composta por resíduos agroindustriais, em Unidades de Pesquisa da Embrapa Amazônia Oriental, em Belém, Pará. Os abates ocorreram em abatedouro comercial, com posteriores avaliações quantitativas e qualitativas das carcaças. O delineamento experimental foi inteiramente casualizado, submetidos à análise de variância e médias comparadas pelo teste 't', a 5% de significância. Os animais do Sistema Silvipastoril, abatidos com pesos similares aos do Sistema Tradicional, apresentaram melhor conformação de carcaça e acabamento de gordura, com diferenças significativas (P < 0,05) no marmoreio do músculo Longissimus dorsi e nos pesos de quartos traseiros, com aumento na produção de carnes nobres. Embora as carcaças tenham apresentado pH final no limite de carne DFD (dark, firm e dry), as análises de cor e textura objetivas permitem considerá-la com qualidade normal

Optimization of extrusion process to obtain shrimp snacks with rice grits and polished rice grains.

This research studied the effect of thermoplastic extrusion on the expansion index (EI), water absorption index (WAI), water solubility index (WSI), and sensory acceptance (SA) of a snack from rice grits, polished rice grains, and shrimp. A 23 factorial design was used with independent variables, temperature in the third extruder zone (63.2?96.8°C), initial moisture (106.4?173.6 g/kg), and shrimp content (16?184 g/kg), whereas EI, WAI, WSI, and SA were the responses. Through the surface-response methodology, the formulation with 80 g/kg shrimp and 130 g/kg initial moisture processed at 85°C in the third extruder zone was considered optimal. The product had good EI, WAI, and SA, 65.6 g/kg moisture, 24.0 g/kg lipids, 89.5 g/kg proteins, 34.2 kg/kg ashes, 72.4 g/kg fibers, and 714.3 g/kg carbohydrates. The product is an alternative for using rice grit, which has low commercial value, while also fully using the regional shrimp