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1040245 
Journal Article 
Supercritical CO2 extraction of essential oils from Chamaecyparis obtusa 
Jin, Y; Han, D; Tian, M; Row, KH 
2010 
1 
Natural Product Communications
ISSN: 1934-578X 
5 
3 
461-464 
English 
20420328 
WOS:000276333100024 
Supercritical carbon dioxide (SC-CO2) extraction and hydrodistillation (HD) were used to determine the essential oil composition of the trunks and leaves of Chamaecyparis obtusa. The optimal extraction conditions for the oil yield within the experimental range of variables examined were temperature 50 degrees C, pressure 12 MPa, carbon dioxide flow rate 40 mL/min and extraction time 90 min. The maximum measured extraction yield was 2.9%. Entrainer solvents, such as methanol in water, had no additional effect on the extraction of essential oils. The chemical composition of the essential oils was analyzed by GC-MS. The major components were alpha-terpinyl acetate (>10.9%), 1-muurolol (>13.2%) and elemol (>8.1%). Sesquiterpenoids formed the major class of compounds present. 
Chamaecyparis obtusa; Cupressaceae; essential oils; supercritical CO2; hydrodistillation; GC-MS 
IRIS
• Methanol (Non-Cancer)
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