94 research outputs found
Volatile constituents of the Rhizome Oil of Alpinia laosensis Gagnep. From Indochina
The volatile constituents, obtained by steam distillation, of rhizomes of A. laosensis (from Vietnam), were analysed by capillary GC and GC-MS. Eighty-two compounds were observed of which 64 were identified. The main component was 1,8-cineole [eucalyptol] (43.9%). No other constituents amounted to more than 5%
Constituents of the leaf oil of Vietnamese Clausena excavata Burm.f
A detailed analvsis of the essential oil of Clausena excavata Burm.f. has been carried out by capillary dc and GC/MS. The oil contains more than 50 components, of which 40 have been identified. The main constituents found were beta-caryophyllene (25.3%), germacrene B (11.8%) !Uld beta-phellandrene (9.2%)
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