Chemical constituents of the essential oil of endemic Teucrium luteum subsp. flavovirens (batt.) Greuter & burdet collected from two localities in Morocco

ABSTRACT

The chemical composition of the essential oils was obtained by hydrodistillation from the aerial parts of Teucrium luteum subsp. flavovirens collected from two different localities from south-east of Morocco and were analyzed by gas chromatography (GC-FID) and gas chromatography–mass spectroscopy (GC-MS). The essential oils yields were 0.9% and 0.94% (v/w) for sample A and sample B, respectively. Sixty-three and fifty-five compounds were identified in the oil samples which constituted 89.9% and 93.0% of the total oils, respectively. The major constituents in sample A were E-Nerolidol (31.0%), β-Pinene (6.9%), β-Elemol (5.0%) and α-Pinene (4.5%), while those of sample B were β-Elemol (16.4%), α-Pinene (12%), (E)-β-Caryophyllene (7%), α-Humulene (6.4%), β-Pinene (5.7%). To the best of our knowledge, this is the first report on the chemical composition of the essential oil of T. luteum subsp. flavovirens from the South eastern Morocco.

KEYWORDS:

• Teucrium luteum subsp. flavovirens
• essential oil
• GC-FID
• GC-MS analyses

Acknowledgments

We wish to express our thanks to Mr Jalal El oualidi from Laboratoire of Botanique, Scientific Institute of Rabat (Morocco) for his help in plant identification.