otimização da prensagem a frio de grãos de amendoim em prensa contínua tipo expeller optimization peanut grain expelling

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ID: 240894
2008
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Abstract
A prensagem contínua de grãos oleaginosos é um método rápido, fácil e de baixo custo para a obtenção de óleos, sendo uma alternativa viável para pequenas comunidades de agricultores. A eficiência deste método é bem inferior àquela conseguida pelo tradicional método de extração por solvente, sendo afetada diretamente pelas condições iniciais dos grãos, como o teor de umidade e temperatura, e por aspectos construtivos da prensa, como dimensionamento do seu eixo e da gaiola. No presente trabalho, avaliou-se por meio de um planejamento experimental, aliado à metodologia de superfície de resposta, a influência da temperatura e do teor de umidade dos grãos de amendoim no rendimento em óleo bruto. As faixas avaliadas foram entre 8 e 10% para o teor de umidade e entre 25 e 60 °C para a temperatura. Os óleos brutos obtidos foram caracterizados conforme metodologia oficial da AOCS. As duas variáveis estudadas foram significativas para o nível de confiança adotado (95%), sendo as condições ótimas localizadas próximas aos maiores valores de temperatura e teor de umidade dos grãos. A faixa de temperatura de 50 a 65 °C e o teor de umidade de 10 a 10,8% correspondem a rendimentos máximos.
The continuous oilseed expeller is a quick, easy, and low cost method to obtain oils, so it is used in small agriculture communities. This method is less efficient than the traditional solvent extraction, since it is affected directly by the initial conditions of the raw material, such as grain moisture temperature, and also by some machine features, such as the shaft and barrel design. In this work, the influence of the temperature and moisture content of peanut grains on the yield of gross oil was evaluated by experimental design and response surface methodology. The studied temperature range was between 8 and 10%, and the moisture content range was between 25 and 60 °C. The unrefined oil obtained was analyzed by the AOCS official method. The two studied variables were significant at 95% level, and the optimal condition values were close to the highest values of temperature and moisture content of grains. The temperature range from 50 to 65 °C and the moisture content from 10 to 10.8% correspond to the maximum oil yields.
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pighinelli2008foodotimizao Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Anna Leticia Montenegro Turtelli Pighinelli;Kil Jin Park;Ana Maria Rauen;Gabriela Bevilaqua;João André Guillaumon Filho
Journal software - practice and experience
Year 2008
DOI
10.1590/S0101-20612008000500011
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