HEGEL Pablo Ezequiel
Extraction of jojoba oil with liquid CO2+ propane solvent mixtures
C. PALLA; P. HEGEL; S. PEREDA; S. BOTTINI
JOURNAL OF SUPERCRITICAL FLUIDS
ELSEVIER SCIENCE BV
Lugar: Amsterdam; Año: 2014 vol. 91 p. 37 - 45
In this work liquid CO2/propane mixtures were used to extract jojoba oil from oilseeds. First, experimentsat 313 K and pressures of 70 bar and 200 bars were carried out on jojoba oil deposited on glass spheres,using different solvent concentrations (30 wt%, 50 wt% and 70 wt% CO2), to assess the influence of thesolvent composition and phase behavior on the extraction rate. Then, jojoba oil was extracted from themilled seeds under homogeneous liquid conditions, using solvent mixtures containing 30 wt% and 50 wt%CO2at 70 bar and 313 K. A solvent mixture with 30 wt% CO2exhibited good solvent power. Oil extractionyields of 98% were obtained using a minimum solvent to oilseed mass ratio of 5 g solvent/g oilseed andoperating the extractor at 313 K and 70 bar.