Effect of the type and level of hydration of alcoholic solvents on the simultaneous extraction of oil and chlorogenic acids from sunflower seed press cake

Autor(es)

Scharlack, Nayara K. ^[1] ; Aracava, Keila K. ^[1] ; Rodrigues, Christianne E. C. ^[1]

Afiliação do(s) autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Science of Food and Agriculture; v. 97, n. 13, p. 4612-4620, OCT 2017.
• Citações Web of Science: 4

Resumo

BACKGROUND: The present study aimed to evaluate the replacement of hexane by alcoholic solvents in oil extraction from sunflower seed press cake. The use of ethanol and isopropanol has important advantages, including low toxicity and good operational safety. Thus, in the present study, solid-liquid extractions were performed in a single stage from 60 to 90 degrees C and in consecutive extractions in three stages at 90 degrees C. RESULTS: Solvent hydration negatively affected the extraction of oil but favored the extraction of chlorogenic acids (CAs), especially when ethanol was used. Regarding oxidative stability, the oils extracted using ethanol presented long induction times, which could be related to the high levels of not only CAs and tocopherols, but also phospholipids. CONCLUSION: Alcoholic solvents canbe used for extraction to produce sunflower seed oil containingminor compoundsthat give it greater oxidative stability. In addition, the results obtained using hydrous ethanol showed that this solvent can yield defatted sunflower seed meal with a low content of CAs, enabling future use of the protein fraction. (C) 2017 Society of Chemical Industry (AU)

• Processo FAPESP: 14/09446-4 - Desenvolvimento de processo de extração de óleos vegetais utilizando solventes alcoólicos: avaliação da composição do óleo e de alterações na fração protéica
• Beneficiário: Christianne Elisabete da Costa Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/21252-0 - Equilíbrio e processos de produção de biocombustíveis e bioprodutos
• Beneficiário: Antonio José de Almeida Meirelles
• Modalidade de apoio: Auxílio à Pesquisa - Temático