Supercritical fluid extraction of the volatile oil from Santolina chamaecyparissus |
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| Authors: | Clara Grosso Ana Cristina Figueiredo Jesus Burillo Ana M Mainar José S Urieta José G Barroso José A Coelho António M F Palavra |
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| Institution: | 1. Departamento de Engenharia Química e Biológica, IST, Lisboa, Portugal. Fax: +351‐218464455;2. Universidade de Lisboa, Faculdade de Ciências de Lisboa, DBV, IBB, Centro de Biotecnologia Vegetal, Lisboa, Portugal;3. Centro de Investigación y Tecnología Agroalimentaria, Departamento de Ciencia, Tecnología y Universidad, Zaragoza, Spain;4. Química Orgánica y Química Física, Universidad Zaragoza, Zaragoza, Spain;5. CIEQB/DEQ, ISEL, Lisboa, Portugal |
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| Abstract: | Supercritical fluid extraction (SFE) of the volatile oil from Santolina chamaecyparissus L. flower heads was performed under different conditions of pressure, temperature, mean particle size and CO2 flow rate. This oil was compared with the essential oil isolated by hydrodistillation (HD). The SFE volatile and essential oils were analysed by GC and GC‐MS. The range of the main volatile components obtained with HD and SFE were, respectively: 1,8‐cineole (25–30% and 7–48%), camphor (7–9% and 8–14%), borneol (7–8% and 2–11%), terpinen‐4‐ol (6–7% and 1–4%), terpinolene (1–4% and 1–7%) and isobornyl acetate (1–2% and 1–11%). The chemical composition of the extracts was greatly influenced by the conditions of pressure and temperature used. In fact, it was possible to enrich the sesquiterpene fraction by increasing the pressure from 8 to 9 MPa, while changing the temperature from 40 to 50°C at 90 bar enriched of the volatiles in n‐alkanes. |
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| Keywords: | 1 8‐Cineole Hydrodistillation Santolina chamaecyparissus L Supercritical fluid extraction Volatiles |
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