the last sentence in the Abstract is not given correctly. The correct sentence is: In fact, it was possible to enrich the sesquiterpene fraction by increasing the pressure from 8 to 9 MPa, while changing the temperature from 50 to 408C at 9 MPa enriched the volatiles in n-alkanes. In addition, Table
Supercritical fluid extraction of the volatile oil from Santolina chamaecyparissus
✍ Scribed by Clara Grosso; Ana Cristina Figueiredo; Jesus Burillo; Ana M. Mainar; José S. Urieta; José G. Barroso; José A. Coelho; António M. F. Palavra
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 866 KB
- Volume
- 32
- Category
- Article
- ISSN
- 1615-9306
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✦ Synopsis
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 CO~2~ 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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