Étude phyto-chimique et microbiologique de l’huile essentielle DEROSMARINUS ERIOCALYX

Abstract

Rosmarinus eriocalyx, an evergreen plant with beneficial properties, was studied for its essential oil. The oil, obtained with an average yield of 0.94 ± 0.08%, is light yellow and highly aromatic. GC-MS analysis identified 22 compounds, including camphor (17.45%), phytol (12.7%), citral (8.98%), 1,8-cineole (8.19%), neral (7.58%), limonene (7.2%), and nerolic acid (6.51%). The oil showed weak antioxidant activity with an IC50 of 126421.10 ± 8745.91. In terms of anti-inflammatory activity, it exhibited weak power but provided 72.37% protection against hemolysis at a concentration of 9225 µg/ml. The oil displayed strong antibacterial activity against Escherichia coli ATCC25922, ATCC6633 Bacillus Subtilis, and Candida albicans, while being less effective against Staphylococcus Aureus ATCC25923 and Pseudomonas Aeruginosa ATCC27853. The study provides valuable insights into the chemical composition and various activities of Rosmarinus eriocalyx essential oil.