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VOL. 8, ISSUE 6 (2023)
Geographical and seasonal variations in the chemical composition of essential oils of wild Libyan Salvia fruticosa Mill. from Al-Jabal Al-Akhdar area
Authors
Sohila A Mousa, Sabah H Lamlom, Mariem F Al-Barghathi
Abstract
Salvia fruitcosa Mill.
(Syn. S. triloba L.) is a native species of the eastern Mediterranean
basin, that is one of the most used medicinal plant in Al- Jabal Al-Akhdar,
Libya. Plant materials were collected seasonally (the four seasons) from three
different sites (Alwasita, Sidi Khaled and Wadi Al-kuf) of Al- Jabal Al-Akhdar area.
Essential oils (EOs) were isolated from fresh aerial parts of the plant species
growing wild by hydroidstillation. The chemical composition of EOs has been
carried out by Gas Chromatography and GC Mass spectrometry (GC/MS). One-way
ANOVA method was conducted to analyze the obtained data using with Least
Significant Difference (LSD) test. The results indicated that oil percentages
obtained from the altitudes of Alwasita (360 m), Sidi Khaled (385 m) and Wadi
Al-kuf (600 m) were (2.24%, 2.00%, and 1.55%, respectively), so that Alwasita
area revealed the greatest quantity, and Wadi Al-kuf area represented the
smallest quantity. EOs percentage and the main components of EOs from different
regions were compared. As the results of the analyses 13 major components were
determined:1,8-cineole (57.53-3.27%), camphor (4.61-13-32%), α-pinene (1.70-7.21%),
caryophyllene (1.35-2.08%), β-pinene (1.24-3.06%), camphene (1.03-3.55%),
α-thujene (1.17-4.11%), myrcene (1.04-2.41%), α-terpinene (1.02-6.52%),
limonene (0.85-1.75%), linalool (0.78-1.70%), bornyl acetate (0.80-2.29%),
borneol (1.02-5.87%) based on different areas and seasons. A significant
seasonal variation in EO percentage and the composition of the EO and their
concentrations was observed. This findings noted on seasonal variation may be
useful in selecting the best season for optimal yield of this species for the
production of the plant active components with high medicinal significance. Moreover,
the percentages of the main components of volatile oil were differed as results
of changing the geographical regions. Statistical analysis showed that
the geographical origin of plants did have significant influence on the
variation in chemical composition of the EO. The study highlighted that
both seasonal and geographical variation can influence the chemical composition
of essential oil from S fruitcosa.
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Pages:36-42
How to cite this article:
Sohila A Mousa, Sabah H Lamlom, Mariem F Al-Barghathi "Geographical and seasonal variations in the chemical composition of essential oils of wild Libyan<i> Salvia fruticosa </i>Mill. from Al-Jabal Al-Akhdar area". International Journal of Botany Studies, Vol 8, Issue 6, 2023, Pages 36-42
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