Article history: This study evaluated the extraction of oil from candeia wood (Eremanthus erythropappus) and indus- Received 25 September 2015 ◦ trial residue using supercritical CO . Extractions were carried out at 40, 55 and 70 C and 160, 200 and Received in revised form 29 February 2016 −3 −1 240 bar, with a mass ﬂow rate of 1.96 × 10 kg min . The oils were characterized for -bisabolol con- Accepted 29 February 2016 tent, chemical composition and antioxidant activity. The highest extraction yield obtained was 1.42 wt% Available online 3 March 2016 for the candeia wood and 0.41 wt% for the residue, both at 70 C and 240 bar. The Sovová model was used to represent the experimental kinetics of extraction. The major compounds identiﬁed in the can- Keywords: deia oil were the sesquiterpenes -bisabolol, eremanthin and costunolide, and the highest -bisabolol Candeia wood content (74.45 g from 100 g of oil) was obtained by the lowest density of the solvent. The highest values Industrial residue for antioxidant activity, determined by the DPPH, FRAP and ABTS methods, were found for oil extracted Supercritical extraction at 70 C and 240 bar. Oil characterization © 2016 Elsevier B.V. All
The Journal of Supercritical Fluids – Elsevier
Published: Aug 1, 2016
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