info:eu-repo/semantics/article
Fractionation of fatty acid esters and acylglycerides with pressurized CO2
Fecha
2019-08Registro en:
Cotabarren, Natalia Soledad; Hegel, Pablo Ezequiel; Pereda, Selva; Fractionation of fatty acid esters and acylglycerides with pressurized CO2; Planta Piloto de Ingeniería Química; Latin American Applied Research; 49; 2; 8-2019; 117-123
0327-0793
1851-8796
CONICET Digital
CONICET
Autor
Cotabarren, Natalia Soledad
Hegel, Pablo Ezequiel
Pereda, Selva
Resumen
Fatty mono- and di-glycerides are products highly used in the food, cleaning and cosmetic industries because of their emulsifying properties. These products can be obtained through different synthesis routes, namely, glycerolysis of vegetable oils, direct esterification of fatty acids with glycerol or partial transesterification of vegetable oils with alcohols. The last two chemical pathways produce fatty acid esters besides mono/diglycerides, which are difficult to split and purify at industrial scale because of its low vapor pressure, low relative volatility, and high viscosity. In this work, we evaluate the fractionation of fatty acid esters and acylglycerides by supercritical CO2 technology. High pressure experimental extractions were carried out at different operating conditions to validate the technology and a rigorous thermodynamic model was used to evaluate the fractionation process.