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Chemical Composition, Olfactory Evaluation and Antimicrobial Activities of Jasminum grandiflorum L. Absolute from India

The chemical composition of a sample of Jasminum grandiflorum L. absolute from India was analyzed by GC and GC/MS. The major compounds identified were benzyl acetate (23.7%), benzyl benzoate (20.7%), phytol (10.9%), linalool (8.2%), isophytol (5.5%), geranyl linalool (3.0%), methyl linoleate (2.8%) and eugenol (2.5%). The odor of this absolute sample was olfactorically evaluated as intense and heavy floral-flowery, with penetrant-animalic and fruity side-notes. Some main and minor compounds were found to be responsible for the aroma impression of this sample. The antimicrobial activities of the J. grandiflorum sample and of some of its main and minor compounds were tested against Gram-positive and Gram-negative bacteria, as well as against the yeast Candida albicans, using agar dilution and agar diffusion methods. The jasmine absolute showed medium to high activity (reference compounds: eugenol and three synthetic antibiotics) against the Gram-positive bacterium Enterococcus faecalis, against the Gram-negative bacteria Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae and Salmonella sp., as well as against the yeast Candida albicans. A comparison of these biological data with those of some constituents of the jasmine absolute is also given.