Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 50, Issue 6, Pages 1492-1496Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf0108563
Keywords
supercritical carbon dioxide extraction; essential oil; Laurus nobilis
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Supercritical carbon dioxide extraction allowed, essential oil of Laurus nobilis to be obtained. Extraction conditions were as follows: :pressure, 90 bar; temperature, 50 degreesC; and carbon dioxide flow, 4) = 1.0 kg/h. Waxes were entrapped in the first separator set at 90 bar and -10 degreesC. The oil was recovered in the second separator working at 15 bar and 10 degreesC. The main components were 1,8-cineole (22.8%), linalool (12.5%), alpha-terpinyl acetate (11.4%), and methyleugenol (8.1%). Comparison with the hydrodistilled oil did not reveal any significant difference. Collection of samples at different extraction times during supercritical extraction allowed the change of the oil composition to be monitored. Lighter compounds such as hydrocarbon and oxygenated monoterpenes were extracted in shorter times than the heavier hydrocarbon and oxygenated sesquiterpenes.
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