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

Autor(es)

Sawada, Mirian Megumi ^[1] ; Venancio, Larissa Lopes ^[1] ; Toda, Tatiane Akemi ^[1] ; Rodrigues, Christianne E. C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Food Engn, LES, BR-13635900 Pirassununga, SP - Brazil

• 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: 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
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• 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
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• 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
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 08/56258-8 - Phase equilibrium and purification processes in the production of biofuels and biocompounds
• Beneficiário: Antonio José de Almeida Meirelles
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático
• 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
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica