Extraction of carotenoid-rich palm pressed fiber oil using mixtures of hydrocarbons and short chain alcohols

Autor(es)

Alvarenga, Gabriela Lara ^[1] ; Cuevas, Maite Sarria ^[1] ; Capellini, Maria Carolina ^[1] ; Crevellin, Eduardo Jose ^[2] ; Beraldo de Moraes, Luiz Alberto ^[2] ; da Costa Rodrigues, Christianne Elisabete ^[1]

Afiliação do(s) autor(es)

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

^[2] Univ Sao Paulo, Dept Quim, BR-14040901 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Food Research International; v. 128, FEB 2020.
• Citações Web of Science: 0

Resumo

Solvent extraction is the most efficient method for recovering residual oil from palm pressed fiber (PPFO), which may contain up to eight times the carotcnoid content of that found in crude palm oil. The objective of the present study is the use of binary mixtures of hydrocarbons (HC), hexane (Hex), cyclohexane (CHex) or heptane (Hap), and alcohols (ALC), ethanol (Eth) or isopropanol (IPA), in order to promote the highest recovery of a carotenoidrich PPFO, in which the compositions of the mixtures are defined based on the calculation of solute-solvent distance (Ra) considering beta-carotene as the solute. The extraction experiments were conducted in batch, at 60 +/- 2 degrees C, or in a fixed-bed packed column, at 55 +/- 3 degrees C. Hex and Hep:IPA provided 80% of batch PPFO extraction yield, while in column, the highest yields were obtained with Eth and Hex:IPA (66%). The total carotenoid content obtained was the same independent of the solvent and extraction configuration (from 1790 +/- 230 up to 2539 +/- 78 mg beta-carotene/kg PPFO). In terms of the carotenoid profile, beta-carotene was mostly extracted by Hex, Hex:Eth stood out in the extraction of alpha-carotene, and Eth extracted the highest content of lycopene. It is possible to infer that mixtures of HC and ALC with compositions defined based on Hansen Solubility Parameters (HSPs) demonstrated good ability to extract carotenoid-rich PPFO, maintaining their relatively stable fatty acids composition and free acidity, showing that partial substitution of HC by ALC is technically possible. (AU)

• Processo FAPESP: 14/21252-0 - Equilíbrio e processos de produção de biocombustíveis e bioprodutos
• Beneficiário: Antonio José de Almeida Meirelles
• Linha de fomento: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/12713-5 - Efeitos do pré-tratamento do grão de soja sobre o desempenho do processo de extração alcoólica: rendimento, funcionalidades da fração proteica e caracterização da fração volátil
• Beneficiário: Maria Carolina Capellini
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/20840-4 - Valorização de coprodutos agroindustriais através da obtenção de óleos vegetais e compostos minoritários via extração com solventes
• Beneficiário: Christianne Elisabete da Costa Rodrigues
• Linha de fomento: Auxílio à Pesquisa - Regular