Aya A. Wafaey

The study analyzed the chemical composition and antimicrobial activity of essential oils and lipids from Gliricidia sepium (Jacq.) Kunth. ex. Walp. leaves and flowers. Gas chromatography-mass spectrometry analysis (GC-MS) revealed high levels of unsaturated fatty acids, with arachidonic acid being the most abundant in both leaves (39.56%) and flowers (83.66%). The leaves had high hydrocarbons, including betulin (29.23%), while the flowers contained a mix of hydrocarbons and sterols/triterpenoids, with betulin (44.39%) as the main compound. The GC-MS analysis of Gliricidia sepium (Jacq.) Kunth. ex. Walp. essential oils found eucalyptol (24.09%) and d-limonene (18.05%) as the main components in the flowers, while coumarin (33.52%) and estragole (15.48%) were the chief components in the leaves. Essential oils from leaves and flowers were mostly inactive against several bacteria and fungi, but the leaves' essential oil showed antifungal activity against fluconazole-resistant Candida albicans and weak activity against Salmonella typhi. The antifungal effect of the leaves' essential oil is likely due to coumarin, estragole, and betulin