CHEMICAL COMPOSITION OF THE ESSENTIAL OIL AND SECRETORY TRICHOMES OF Thymus guyonii de Noé , A MEDICINAL PLANT FROM ALGERIA

Universitatea din Oradea. Analele. Fascicula Biologie

Hacina BENZINE-CHALLAM¹ 

关键词: Thymus guyonii de Noé;    Lamiaceae;    essential oils;    glandular trichomes.;   

DOI  :  

学科分类：生物科学（综合）

来源: Editura Universitatii din Oradea / University of Oradea Publishing House

【 摘 要 】

In the perspective of a biological study of a medicinal Lamiaceae recognized for its antioxidant, antibacterial and antifungal properties, our research focused on the analysis of the aromatic compounds of a new population of Thymus guyonii de Noé in the Algerian Saharan Atlas (Ain Takersane). Volatile extract of flowering twigs is characterized by the presence of 43 components identified by GC and GC / MS. Given the phytochemical data of essential oils obtained at the scale of four other populations of T. guyonii collected in semi-arid, arid and Saharan climate, our work is intended as an additional analysis for an intraspecific comparison of volatile components according to the habitats. The application of the hierarchical ascending classification made it possible to highlight an individualization of the five populations in three chemotypic groups: α-terpinyl acetate describes for the first time, p-cymene, and oxygenated compounds (carvacrol or thymol), in relation to the continentality gradient. The sites producing volatile extracts are very little known in this taxon; the morpho-anatomical observations of glandular trichomes on the epidermal surface of stems, leaves and calyxes were carried on light microscopy and scanning electron microscopy. Two types of trichomes differently distributed between the vegetative and floral organs have been described: capitate with a single-celled glandular head and peltate with twelve secretory cells organized in two discs.

【 授权许可】

Unknown