Effect of the harvest stage on the chemical composition and bioactivity of Moroccan Artemisia herba alba essential oils

Boussoula E., Satrani Badr, Ghanmi Mohamed, Rhafouri Rachid, Thévenon Marie-France, Burri S., Alaoui M.B., Chaouch Abdelaziz. 2017. Effect of the harvest stage on the chemical composition and bioactivity of Moroccan Artemisia herba alba essential oils. International Journal of Academic Studies, 3 (3) : 58-69.

http://www.ijacademicstudies.com/p/volume3n3.html

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Résumé : The richness and diversity of the Moroccan Saharan flora constitutes a veritable phytogenetic reservoir with a flora that includes more than 500 aromatic and medicinal species, many of which remain unexploited. Among these plants we find Atremisia herba alba in the region of Guelmim (Sahara of Morocco) which has a great potential in phytomass and which deserves to be better valued. The objective of this work is the comparative study of the yield and chemical composition of the essential oil derived from Artemisia herba alba in Guelmim region (Sahara of Morocco) according to the date of harvest as well as the determination of its antibacterial and antifungal activity towards eleven microorganisms. Essential oils yields expressed in ml compared with 100 g of dry matter of Artemisia herba alba harvested in March, June, September and December (2015) are respectively 1.62; 0.95; 0.64 and 1.85 %. Chromatographic analyses of essential oils revealed the predominance of camphor, cis-b-terpineol, camphene, trans-thujone and trans-verbenol whose rates vary according to the plant phenological stage. The essential oil of Artemisia herba-alba collected during March was the most active against all microorganisms tested.

Mots-clés Agrovoc : huile essentielle, Artemisia, composition chimique, propriété antimicrobienne, propriété antifongique

Mots-clés géographiques Agrovoc : Maroc

Mots-clés complémentaires : Artemisia herba alba

Mots-clés libres : Artemisia herba-alba, Essential oil, Chemical composition, Antimicrobial activity

Classification Agris : H01 - Protection des végétaux - Considérations générales
F60 - Physiologie et biochimie végétale

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

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