Chemical composition, antibacterial activity of essential oil and anatomical study of Chrysanthemum morifolium
The aim of this study is to identify the chemical composition and to evaluate the antimicrobial activity of Chrysanthemum morifolium. The analysis and identification of essential oil which obtained by hydrodistilation method were realized by gaz chromatography and mass spectroscopy. The antibacterial activity was tested by using the agar diffusion test and the Gram positive and negative pathogenic bacteria: Staphylococcus aureus ATCC 25923. Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853 and Citrobacter freundii ATCC 8090, Kleibseilla pneumoniae ATCC 700603 and Shigella sonnei were used to evaluate this activity. This analysis led to the identification of 26 compounds representing 88.40 % of the total essential oil mass. The major compound was Verbenone (17.33 %). Other components present in appreciable contents were: Chrysanthenone (9.71%). 4-epi-cubedol (07.25%) and δ-Cadinol (05.29 %). Essential oil of Chrysanthemum morifolium exhibited an antibacterial effect against pathogenic bacteria, like those observed against Staphylococcus aureus ATCC 25923 (35±1.2mm) and Citrobacter freundii ATCC 8090 (21±0.87mm), however Pseudomonas aeruginosa ATCC 27853 and Kleibseilla pneumoniae ATCC 700603 were resistant. The anatomical study showed the presence of several types of trichomes including the glands secreted for essential oils and protector trichomes.
Keywords: essential oil, antibacterial activity, Chrysanthemum morifolium, anatomical study, chemical composition
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