Abstract
AbstractMacauba kernel oil (MKO) was extracted using supercritical CO2 and compressed propane as the solvent. The influence of temperature (313–353 K for CO2 and 303–333 K for propane) and pressure (18–22 MPa for CO2 and 8–12 MPa for propane) on oil yield was investigated, and the results were compared with conventional extraction. A characterization of oil and defatted meal was performed. Temperature and pressure, in the evaluated range, influenced oil yield with the use of CO2. For propane, the oil yield was not influenced by the experimental conditions. In the evaluated experimental range, the use of propane and CO2 provided 100 % and ∼93 % oil yield compared to conventional extraction, respectively. MKO showed a predominance of saturated fatty acids, among which lauric acid was the major constituent. CO2 presented greater efficiency in the removal of phytosteroids and tocopherols from the macauba kernel, however, the oil extracted with propane presented longer oxidative stability. Defatted meals presented modified physico‐chemical composition and potentiated technological characteristics due to oil removal.
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