Document Detail

Enrichment of the thymoquinone content in volatile oil from Satureja montana using supercritical fluid extraction.
MedLine Citation:
PMID:  19156634     Owner:  NLM     Status:  MEDLINE    
Supercritical fluid extraction (SFE) of the volatile oil from Satureja montana L. was performed under different conditions of pressure (90 and 100 bar), temperature (40 and 50 degrees C), mean particle sizes (0.4, 0.6 and 0.8 mm) and CO(2) flow rate (0.8, 1.1 and 1.3 kg/h) to understand the influence of these parameters on the composition and yield of this oil. The results were compared with those obtained for the essential oil isolated by hydrodistillation (HD). The volatile and the essential oil were analysed by GC and GC-MS. The main compounds are carvacrol (52.2-62.0% for HD vs. 41.7-64.5% for SFE), thymol (8.6-11.0% for HD vs. 6.0-11.3% for SFE), p-cymene (6.9-12.8% for HD vs. 6.0-17.8% for SFE), gamma-terpinene (6.4-9.4% for HD vs. 2.3-6.0% for SFE) and beta-bisabolene (2.0-2.7% for HD vs. 2.2-3.5% for SFE). The major difference between SFE and HD was the relative amount of thymoquinone, an oxygenated monoterpene with important biological activities, which can be ten-fold higher in volatile oil (1.6-3.0 for SFE vs. 0.2% for HD). The morphology of the glandular trichomes of S. montana and the effect of the grinding process on them was also evaluated by SEM.
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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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of separation science     Volume:  32     ISSN:  1615-9314     ISO Abbreviation:  J Sep Sci     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2009-02-02     Completed Date:  2009-04-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088554     Medline TA:  J Sep Sci     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  328-34     Citation Subset:  IM    
Departamento de Engenharia Química e Biológica, IST, Lisboa, Portugal.
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MeSH Terms
Benzoquinones / isolation & purification*
Carbon Dioxide / chemistry
Chromatography, Supercritical Fluid / methods*
Microscopy, Electron, Scanning
Oils, Volatile / chemistry*
Particle Size
Satureja / chemistry*,  ultrastructure
Reg. No./Substance:
0/Benzoquinones; 0/Oils, Volatile; 124-38-9/Carbon Dioxide; 490-91-5/thymoquinone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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