Seasonal variation of leaf, stem and umbel ray essential oils of Bupleurum gibraltarium Lam

The yield and composition of essential oils from leaves, stems, umbel rays and also from whole aerial parts of Bupleurum gibraltarium Lam. (Apiaceae) were determined during the pre-flowering, full flowering, late flowering, and fruiting vegetative periods. A fruit sample was also studied for compara...

Full description

Saved in:
Bibliographic Details
Published inThe Journal of essential oil research Vol. 18; no. 4; pp. 396 - 401
Main Authors Fernandez-Ocana, A.M, Fernandez-Lopez, C, Camacho-Simarro, A.M, Velasco-Negueruela, A, Perez-Alonso, M.J, Pala-Paul, J, Garcia-Vallejo, M.C, Altarejos, J
Format Journal Article
LanguageEnglish
Published Carol Stream Taylor & Francis Group 01.07.2006
Allured Publishing Corporation
Subjects
2,3,4-trimethylbenzaldehyde
Apiaceae
Bupleurum
Bupleurum gibraltarium
chemical composition
essential oil composition
essential oils
fruiting
indigenous species
inflorescences
leaves
limonene
medicinal plants
plant extracts
sabinene
seasonal variation
shrubs
stems
traditional medicine
vegetative growth
wild plants
α-pinene
Africa
Spain
Online AccessGet full text

Cover

More Information
Summary:The yield and composition of essential oils from leaves, stems, umbel rays and also from whole aerial parts of Bupleurum gibraltarium Lam. (Apiaceae) were determined during the pre-flowering, full flowering, late flowering, and fruiting vegetative periods. A fruit sample was also studied for comparative purposes. Leaves (0.8-1.8% yield) and stems (0.3-0.7%) reached their maximum oil content during the late flowering period, whereas umbel rays (2.2-3.7%) reached it in full flowering. Oil samples were analyzed by capillary GC and GC/MS: components which were found in amounts greater than 2% were selected to carry out a seasonal study. In the leaf oils, sabinene (12.0-33.9%) and limonene (7.8-23.4%) were the main components, the sabinene level being minimum in full flowering and maximum in fruiting. In stem oils, sabinene (4.7-21.6%) and 2,3,4-trimethylbenzaldehyde (9.3-13.6%) were the main components, the sabinene level being minimum in pre-flowering and maximum in full flowering. In umbel ray oils, sabinene (20.7-43.1%) was the first component in all the phenological periods, followed by alpha-pinene (7.3-28.2%). Both monoterpenes increased their levels in late flowering and reached minimum amounts in fruiting.
ISSN:1041-2905
2163-8152
DOI:10.1080/10412905.2006.9699124