Supercritical fluid extraction of carqueja (Baccharis trimera) oil: Process parameters and composition profiles

摘要: Abstract Carqueja ( Baccharis trimer a Less) is common plant native from South America. In this work, the global yield X 0 ) of carqueja oil, extracted by means supercritical CO 2 at 30 and 40 °C 100 to 300 bar, was investigated. The maximum solvent flow rate employed 8.33 gCO /min, with extraction times up 6 h. yields varied 0.34 2.07% (w/w). Additionally, process compared organic in terms oil composition profile. extracts were analyzed gas chromatography–mass spectrometry (GC–MS) 14 different components identified. mathematical models proposed Tan Liou [Tan, C. Liou, D., 1989, Modeling desorption conditions, AIChE J, 35(6): 1029–1031], Brunner [Brunner, G., 1994, Gas Extraction: An Introduction Fundamentals Supercritical Fluids Application Separation Processes (Springer, New York)], Sovova [Sovova, H., Rate vegetable . Modelling curves, Chem Eng Sci, 49(3): 409–414] Esquivel et al. [Esquivel, M.M., Bernardo-Gil, M.G. King, M.B., 1999, Mathematical for olive husk J Fluids, 16: 43–58] used description kinetic aspects process. modeled results showed good agreement experimental data especially constant period (CER).