Supercritical fluid extraction (SFE) from aniseed using carbon dioxide was performed at 30 °C and pressures of 80-180 bar. The chemical composition of the SFE extract was determined by GC-MS; the quantitative analysis was done by GC-FID and TLC. The total amount of extractable substances or global yield (mass of extract/mass of feed) for the SFE process varied from 3.13 to 10.67% (mass). The solubilities of the anise essential oil in CO2 were 0.0110, 0.0277, 0.0143, and 0.0182 kg of solute/kg of CO2 at 80, 100, 140, and 180 bar, respectively. The major compounds identified and quantified in the extracts were anethole (∼90%), γ-himachalene (2-4%), p-anisaldehyde (<1%), methylchavicol (0.9-1.5%), cis-pseudoisoeugenyl 2-methylbutyrate (∼3%), and trans-pseudoisoeugenyl 2-methyl-butyrate (∼1.3%). The Sovová model described quite well the experimental overall extraction curves.
CITATION STYLE
Rodrigues, V. M., Rosa, P. T. V., Marques, M. O. M., Petenate, A. J., & Meireles, M. A. A. (2003). Supercritical extraction of essential oil from aniseed (Pimpinella anisum L) using CO2: Solubility, kinetics, and composition data. Journal of Agricultural and Food Chemistry, 51(6), 1518–1523. https://doi.org/10.1021/jf0257493
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