Titre |
Variations saisonnières de constituants volatils de la partie aerienne de Hemizygia bracteosa (Benth.) Briq. du Bénin |
Auteurs |
KPOVIESSI Dossou Sika Salomé [1],
AGBANI Pierre O. [2],
Gbaguidi A. Fernand [3],
GBENOU Joachim [4],
Sinsin Brice A. [5],
ACCROMBESSI COFFI GEORGES [6],
Bero Joanne [7],
MOUDACHIROU MANSOUROU [8],
Quetin-Leclercq Joëlle [9],
|
Journal: |
Comptes Rendus Chimie |
Catégorie Journal: |
Internationale |
Impact factor: |
1.71 |
Volume Journal: |
19 |
DOI: |
|
Resume |
Essential oils from fresh aerial parts of Hemizygia bracteosa (Benth.) Briq. were extracted by
steam distillation. The oil yield from plants collected during the hot season (February) and
during the cold season (August) were 0.12 ± 0.01% and 0.25 ± 0.02%, respectively. GC/FID
and GC/MS analyses allowed us to identify a total of 65 compounds, representing 97% of
the hydrodistillate. The main components of the oil from the hot period were (E)-b-farnesene (64 ± 0.04%), b-elemene (7.4 ± 0.05%), trans-nerolidol (6.2 ± 0.04%), and
a-muurolene (2.7 ± 0.03%). The essential oil from the cold season was characterized by the
presence, as major compounds, of (E)-b-farnesene (67 ± 0.04%) along with b-caryophyllene
(3.6 ± 0.06%), b-elemene (3.3 ± 0.05%), 7-epi-a-selinene (3.1 ± 0.01%) and p-cymene
(2.5 ± 0.04%). This is the first report of these components in the essential oil of Hemizygia
bracteosa (Benth.) Briq. |
Mots clés |
Hemizygia bracteosa
Lamiacea
Essential oil composition
Seasonal variations
(E)-b-Farnesene
b-Elemene. |
Pages |
890 - 894 |
Fichier |
(PDF) |