Fusel oil: Water adsorption and enzymatic synthesis of acetate esters in supercritical CO2

Autor(es)

Baiao Dias, Arthur Luiz ^[1] ; da Cunha, Gabriela Nanuncio ^[1] ; dos Santos, Philipe ^[1] ; Meireles, M. Angela A. ^[1] ; Martinez, Julian ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Food Engn, Food Engn Dept, UNICAMP, BR-13083862 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SUPERCRITICAL FLUIDS; v. 142, p. 22-31, DEC 2018.
• Citações Web of Science: 1

Resumo

Acetate esters were produced from fusel oil through biocatalysed reactions under supercritical CO2 (SC-CO2) and Lipozyme 435 as catalyst. Low-pressure (P-atm/25 degrees C) and SC-CO2 adsorption with 13X-Na zeolites (15 MPa/40 degrees C) were applied to reduce the initial water of fusel oil. Pressure (10-20 MPa), temperature (40-60 degrees C) and enzyme to substrate molar ratio (3.12-12.50 g/mol OH) were investigated on the reaction conversion (Y, %). Infrared spectroscopy (FT-IR) analyses were carried out to identify chemical alterations. SC-CO2 reduced the initial water approximately 63% comparing to crude fusel oil. 10 MPa, 60 degrees C and 6.25 g/mol OH were the optimum conditions to produce acetate esters from crude oil. These conditions applied for adsorbed fusel oil increased the conversion of isoamyl, isobutyl and ethyl acetates up to 3-fold, 1.1-fold and 1.5-fold, respectively. FT-IR analyses suggested chemical changes in the bands of the reaction products. (AU)

• Processo FAPESP: 15/11932-7 - Integração de processos de extração a alta pressão com operações de separação para o aproveitamento de subprodutos do processamento de frutas
• Beneficiário: Julian Martínez
• Modalidade de apoio: Auxílio à Pesquisa - Regular