Chemical Characterization on the Aromatic Composition of Cedrus Atlantica from Morocco in Two Geographical Areas will Break

For centuries, humans have used plants in several fields, such as perfumery, pharmacology and food, thanks to their properties discovered by chance [1]. The genus Cedrus is an ancient genus known from the Tertiary with a broad distribution, it includes four species: Atlas cedar, Lebanon cedar, Himalayan cedar and Cyprus cedar [2]. The area occupied by natural cedar is divided into three large areas, Lebanon (160000 ha), Himalaya (500000 ha) and Morocco and Algeria [3]. Morocco has a natural variety of very diverse aromatic plants [4]. These aromatic plants are at the origin of products with very high added value which can contribute to the economic development of the country, and which could constitute an important capital for its sustainable development [5]. These many aromatic species that can provide essential oils, are used in various fields for their therapeutic and organoleptic properties, including fragrant (perfumery, cosmetic) [2,6]. Materials and Methods


Introduction
For centuries, humans have used plants in several fields, such as perfumery, pharmacology and food, thanks to their properties discovered by chance [1]. The genus Cedrus is an ancient genus known from the Tertiary with a broad distribution, it includes four species: Atlas cedar, Lebanon cedar, Himalayan cedar and Cyprus cedar [2]. The area occupied by natural cedar is divided into three large areas, Lebanon (160000 ha), Himalaya (500000 ha) and Morocco and Algeria [3]. Morocco has a natural variety of very diverse aromatic plants [4]. These aromatic plants are at the origin of products with very high added value which can contribute to the economic development of the country, and which could constitute an important capital for its sustainable development [5]. These many aromatic species that can provide essential oils, are used in various fields for their therapeutic and organoleptic properties, including fragrant (perfumery, cosmetic) [2,6].

Collection of samples
Samples of the aerial part (stems, leaves and flowers) Cedar of Ajdir (Khenifra-Morocco) and Cedar of Wiwane (Azrou-Morocco) were harvested in September (2017) both species were verified by a botanists at EST-Khenifra, Morocco (Professors E. Abba and S. Cherroud).

Extraction of essential oils from cedrus
The essential oils were obtained by hydrodistillation of the aerial parts (stems, leaves and flowers) in fractions of 250 g for a period of 3 h, using a Clevenger type extractor. Water vapor laden with essential oils condenses in a coolant and is collected in a separatory funnel and dried with anhydrous sodium sulphate

Gas chromatography (GC)/mass spectrometry (MS)
The analysis of the essential oils was carried out by gas chromatography coupled with mass spectrometry (GC-MS).
It can therefore be concluded that the chemical composition or the percentage of the constituents of the essential oils differs according to the part of the plant subjected to the extraction. Other studies [12] have also shown that the chemical composition of the essential oils of Cedrus atlantica varies considerably according to the geographical zones the period of harvest and the age of the plant.

Conclusion
In the present work, we have characterized the chemical composition of Cedrus Atlantica essential oil from Morocco in two geographic areas will defer, Cedrus Atlantica of Ajdir (Khenifra) and Cedrus Atlantica of Wiwane (Azrou region). The identification of the chemical constituents was carried out on the basis of a GC-MS analysis. It can therefore be concluded that the chemical composition or percentage of the constituents of the essential oils differs according to the part of the plant subjected to the extraction, according to the geographical areas the harvest period and the age of the plant.