Volatile oil constituents of the Ethiopian plant Salvia schimperi Benth.

Citation
Mm. Endeshaw et al., Volatile oil constituents of the Ethiopian plant Salvia schimperi Benth., FLAV FRAG J, 15(1), 2000, pp. 27-30
Citations number
18
Categorie Soggetti
Food Science/Nutrition
Journal title
FLAVOUR AND FRAGRANCE JOURNAL
ISSN journal
08825734 → ACNP
Volume
15
Issue
1
Year of publication
2000
Pages
27 - 30
Database
ISI
SICI code
0882-5734(200001/02)15:1<27:VOCOTE>2.0.ZU;2-R
Abstract
The volatile oils of the flowers and leaves of two collections (1997 and 19 98) of the Ethiopian plant Salvia schimperi (Lamiaceae), have been examined separately by means of GC, chiral GC, GC-MS, GC-FTIR,H-1- and C-13-NMR. Th e main constituents of the essential oils of the flowers (1997) were identi fied as linalol (56.3%), linalyl acetate (15.9%), gamma -terpinene (3.5%), and alpha -terpineol (4.1%). The oils from the leaves (1997) were found to contain linalol (26.6%), linalyl acetate (8.0%), trans-caryophyllene (10.6% ) and aromadendrene (4.4%) as major components. Minor differences in the pe rcentage compositions of these compounds were noted for the last collection from the same place and season (1998). The oils from the leaves contained considerably more sesquiterpenes than the oils from the flowers. The enanti omeric compositions of some of the constituents are (R):(S)-linalol, 91:9; (R):(S)-linalyl acetate > 99:1; (R):(S)-alpha -terpineol, 79:21; and (R):(S )-terpinen-4-ol, 29:71. Copyright (C) 2000 John Wiley & Sons, Ltd.