Soxhlet extractor stuck12/19/2023 ![]() The highest extraction yield with propane was 38.4 ± 1.2 wt% at 20 ☌, 20 bar, 30 min and 0.95 mm particle size.ĪOCS (1998) Official methods and recommended practices of the american oil chemists’ SocietyĪttard TM, Bukhanko N, Eriksson D, Arshadi M, Geladi P, Bergsten U, Budarin VL, Clark JH, Hunt AJ (2018) Supercritical extraction of waxes and lipids from biomass: a valuable first step towards an integrated biorefinery. For propane extracts, the highest TPC of 29.89 mg GAE/100 g of oil was obtained by extracting wet-milled corn germs at 60 ☌ and 100 bar. ![]() The antioxidant activities of propane-extracted oils, which seemed to be correlated with their corresponding TPC value, were closer to those obtained with hexane. In general, pressure exerted a positive effect on these properties for propane-extracted oils, indicating that the pressure may be managed to improve the quality of the extracted oil. The extracted oils were characterized by physicochemical properties, total phenolic content (TPC) and antioxidant activity. An increase in confinement time had a positive effect and the increase of particle size had a negative effect on the yield. Consequently, the lowest temperature and pressure involved in this study (20 ☌ and 20 bar) could be used without implications on yield. Temperature and pressure had no effect on the extraction yield. ![]() Moreover, the extraction kinetics for the pressurized solvent were determined. The effect of temperature (20, 40, 60 ☌), pressure (20, 60, 100 bar), particle size and confinement time were studied. The extraction of corn germ oil was evaluated using pressurized propane as solvent in semi-batch process as an alternative approach to organic solvent extraction. ![]()
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