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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Effects of different alcoholic extraction conditions on soybean oil yield, fatty acid composition and protein solubility of defatted meal

Texto completo
Autor(es):
Sawada, Mirian Megumi [1] ; Venancio, Larissa Lopes [1] ; Toda, Tatiane Akemi [1] ; Rodrigues, Christianne E. C. [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Food Engn, LES, BR-13635900 Pirassununga, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Food Research International; v. 62, p. 662-670, AUG 2014.
Citações Web of Science: 29
Resumo

The aim of this work was to evaluate the feasibility of replacing hexane with ethanol in the soybean oil extraction process. The use of ethanol has very attractive advantages, including a low toxicity, good operational security, as well as being obtained from a biorenewable source. Thus, in this study solid-liquid extractions were performed under equilibrium conditions in which the variables evaluated were temperature (ranging from 40 to 90 degrees C) and solvent hydration (0 to 12 mass % of water). Results showed that an increase in water content of the solvent strongly suppressed the extraction of oil, whereas an increase in temperature increased the extraction of oil. For proteins, the opposite behavior was observed, where an increase in the water content of the solvent increased the extraction of such compounds, and an increase in temperature decreased the protein content in the extracted phase. The evaluation of the chemical profile and fatty acid composition of the oils obtained via ethanol showed that they had a composition typical of soybean oil, regardless of the extraction condition. The quality of the protein fraction from the oil extraction was evaluated by nitrogen solubility and thermal analysis. The evaluation indicated that the protein fraction is strongly influenced by the presence of water in the solvent and by temperature. These results indicate that it is technically feasible to use ethanol in the soybean oil extraction process; however, the hydration conditions of the solvent and the process temperature must be controlled due to their influences on the protein fraction characteristics of the defatted meal. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 09/17855-3 - Equilíbrio sólido-líquido, cinética de extração de componentes minoritários e projeto de extratores na extração de óleos vegetais com etanol
Beneficiário:Christianne Elisabete da Costa Rodrigues
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 11/14246-6 - Avaliação da solubilidade da fração proteica em soja submetida à extração alcoólica sob diferentes condições de temperatura e hidratação do etanol
Beneficiário:Larissa Lopes Venâncio
Linha de fomento: Bolsas no Brasil - Iniciação Científica
Processo FAPESP: 11/09543-1 - Obtenção de óleo de soja utilizando etanol como solvente: determinação experimental de dados de cinética extração
Beneficiário:Tatiane Akemi Toda
Linha de fomento: Bolsas no Brasil - Iniciação Científica
Processo FAPESP: 10/03058-1 - Estudo da viabilidade técnica da substituição de hexano por etanol no processo de extração de óleo de soja: cinética de extração e índices de qualidade
Beneficiário:Mirian Megumi Sawada
Linha de fomento: Bolsas no Brasil - Mestrado
Processo FAPESP: 08/56258-8 - Phase equilibrium and purification processes in the production of biofuels and biocompounds
Beneficiário:Antonio José de Almeida Meirelles
Linha de fomento: Auxílio à Pesquisa - Programa BIOEN - Temático