Supercritical extraction of essential oils of Piper auritum and Porophyllum ruderale

• Published in: The Journal of supercritical fluids Vol. 127; pp. 97 - 102
• Main Authors: Conde-Hernández, Lilia A., Espinosa-Victoria, José R., Guerrero-Beltrán, José Á.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2017
• Subjects: Antioxidant activity; Piper auritum (“hoja santa”); Porophyllum ruderale (“pápalo” or “pápalo quelite”; Supercritical extraction; Piper auritum (“hoja santa”); Porophyllum ruderale (“pápalo” or “pápalo quelite”; Supercritical extraction; Antioxidant activity
• ISSN: 0896-8446; 1872-8162
• DOI: 10.1016/j.supflu.2017.03.026

[Display omitted] •Essential oils of Piper auritum obtained by supercritical extraction.•Essential oils of Porophyllum ruderale obtained by supercritical extraction.•Yields were in the range 2.37±0.05–3.09±0.12g oil/100g dry material.•Components identified by GC–MS in Piper auritum oil were safrole and phytol.•Isosafrole, α-copaene and phytol were identified in Porophyllum ruderale oil. Essential oils (EO) of Piper auritum (“hoja santa”) and Porophyllum ruderale (“pápalo” or “pápalo quelite”), previously dried, were obtained by supercritical extraction (SCE) with CO2. Oil extraction was performed at two temperatures (40 and 50°C) and two pressures (10.34 and 17.24MPa). The steam distillation (SDE) method was used also for extraction of EO. Oils were analyzed in antioxidant activity (ABTS method). The chemical composition of oils, by gas chromatography–mass spectroscopy (GC–MS). Piper auritum oil yields were in the range 2.37±0.05–3.09±0.12g oil/100g dry material and in Porophyllum ruderale the yields were 0.82±0.01–1.35±0.09g oil/100g dry material. The antioxidant activity, for plants, were in the range 1.30–11.65mg equivalent of Trolox/g of oil and 1.09–10.16mg of ascorbic acid equivalent/g of oil. The main components identified by GC–MS in Piper auritum oil were safrole and phytol and in Porophyllum ruderale oil were isosafrole, α-copaene and phytol.