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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.)

Comparison of several methods for effective lipid extraction from wet microalgae using green solvents

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Autor(es):
de Jesus, Sergio S. [1] ; Ferreira, Gabriela F. [1] ; Moreira, Larissa S. [2] ; Wolf Maciel, Maria Regina [1] ; Maciel Filho, Rubens [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Sch Chem Engn, Lab Optimizat Design & Adv Control, PO 6066, BR-13083852 Campinas, SP - Brazil
[2] Univ Fed Rio de Janeiro, Fac Pharm, BR-21941170 Rio De Janeiro, RJ - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: RENEWABLE ENERGY; v. 143, p. 130-141, DEC 2019.
Citações Web of Science: 3
Resumo

A comparative study of lipid extraction from microalgae was performed using the Soxhlet, Bligh and Dyer, Folch, and Hara and Radin methods, with the green solvents 2-methyltetrahydrofuran (2-MeTHF) and cyclopentyl methyl ether (CPME), which have also been used in previously published studies. Extractions were performed with the microalgae Chlorella pyrenoidosa at 65.71% moisture. The Bligh and Dyer methodology, using the solvents 2-MeTHF:isoamyl alcohol (2:1 v/v) and CPME:methanol (1:1.7 v/ v), extracted 95.73 +/- 0.52 and 89.35 +/- 7.98 mg lipids/g biomass, respectively. Regarding fatty acids yield, CPME showed higher selectivity than 2-MeTHF. A brief cost-effectiveness and energy analysis of the extraction process was performed. Based on the calculations, this study concluded that the energy required for the evaporation of the solvent and mixture of solvents after the extraction process has no significant economic impact; the largest expense is associated with solvent consumption. To extract 1 kg of fatty acids, the Hara and Radin method using hexane:isopropanol (3:2 v/v) proved to be the most costeffective. Results show that these solvents prices' are still not competitive when compared to fossil-based solvents. The price reduction of 2-MeTHE would make it more attractive than CPME, as it requires a lower amount of biomass. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 10/03764-3 - Projeto e construção de um fotobiorreator airlift agitado para a produção de lipídeos e carboidratos
Beneficiário:Sergio Santos de Jesus
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 15/19609-0 - Utilização de solventes verdes derivados da cana-de-açúcar na extração de lipídeos e aplicação na produção de biodiesel e síntese do 2-metiltetrahidrofurano através do bagaço
Beneficiário:Rubens Maciel Filho
Linha de fomento: Auxílio à Pesquisa - Regular