Medicinal & Aromatic Plants
Open Access
ISSN: 2167-0412
+44 1300 500008
ISSN: 2167-0412
+44 1300 500008
Karima Tabbabi
Laboratory of Natural Substances, Faculty of Sciences of Bizerte,
Zarzouna 7021, Bizerte
Tunisia
Research Article
Characterization and Identification of the Components Extracted from 28 Lichens in Tunisia by High Performance Thin-Layer Chromatography (HPTLC), Morphologic Determination of the Species and Study of the Antibiotic Effects of Usnic Acid
Author(s): Karima Tabbabi and Tijani Karmous
Karima Tabbabi and Tijani Karmous
This aim of this work is to study the isolation of usnic acid found in many lichen species and the evaluation of its antibacterial activity. The study began with a morphological determination of lichens harvested in Tunisia. The corresponding analysis identified 28 species belonging to the following families: Xanthoria, Parmelia, Caloplaca, Ramalina, Diploschistes, Usnea. A chromatographic study of the chemical composition of these lichens highlighted the presence of many compounds belonging to various chemical categories: depsides and depsidones, xanthones, anthraquinones, dibenzofurans, etc. Special attention was given to the components of this last category and particularly to usnic acid which is therapeutically very interesting. This component plays a very important role in fighting the bacteria responsible for numerous urinary and pulmonary infections and also in fighting viruses.. View More»
DOI:
10.4172/2167-0412.1000253