Abstract
BackgroundIn order to find new bioactive natural products, the antimicrobial and antioxidant activities of essential oil components extracted from the separated organs of the Algerian medicinal and aromatic plant Daucus muricatus L. were studied.ResultsThe chemical composition of essential oils obtained by hydrodistillation (HD) was investigated using Gas Chromatography–Retention Indices (GC-RI) and GC–Mass Spectrometry (GC-MS). Two types of essential oils were produced by D. muricatus: (i) The oil from roots is mainly composed by nonterpenic oxygenated compounds (59.8 g/100 g), and (ii) the aerial part oils (i.e., the leaves, stems, flowers, and umbels) was mainly composed by terpenic hydrocarbon compounds (62.3–72.2 g/100 g). The chemical composition of the volatile fraction isolated from different organs of Daucus muricatus were studied by HS–SPME/GC–RI and GC–MS after optimization of Solid Phase MicroExtraction parameters. For all organs studied, the main volatiles emitted by the plant were hydrocarbon compounds (60.7–82.2 g/100 g). Only quantitative differences between the volatiles of the separated organs studied were observed. In addition, the activity of the oil of D. muricatus against eight bacterial strains and one yeast was investigated. The oil from roots revealed active against S. aureus, while the essential oil obtained from the aerial parts was active against the yeast C. albicans.ConclusionsDaucus muricatus essential oil seems be a promising source of natural products with potential antimicrobial activity.
Highlights
In order to find new bioactive natural products, the antimicrobial and antioxidant activities of essential oil components extracted from the separated organs of the Algerian medicinal and aromatic plant Daucus muricatus L. were studied
As part of our ongoing chemical investigation of the essential oils from the Algerian Daucus genus [18] and our search for active natural products to fight nosocomial infections, we investigated for the first time the chemical composition and biological activities of Daucus muricatus L. through the study of: (i) the volatile components of D. muricatus roots, leaves, stems, flowers, and umbels extracted by hydrodistillation and by solid phase microextraction (SPME) using gas chromatography (GC) and gas chromatography–mass spectrometry (GC–MS), (ii) the antibacterial activity of D. muricatus essential oil against nine species of microorganisms involved in nosocomial infections using paper disc diffusion and agar dilution methods
Essential oil chemical composition GC–Retention indices (RI) and GC–MS analysis of D. muricatus essential oils obtained from the roots, stems, leaves, flowers, and umbels that accounted for 92.8, 94.7, 94.5, 95.4, and 95.7 g/100 g of the oils, respectively and allowed the identification of 99 compounds
Summary
The chemical composition of essential oils obtained by hydrodistillation (HD) was investigated using Gas Chromatography–Retention Indices (GC-RI) and GC–Mass Spectrometry (GC-MS). Two types of essential oils were produced by D. muricatus: (i) The oil from roots is mainly composed by nonterpenic oxygenated compounds (59.8 g/100 g), and (ii) the aerial part oils (i.e., the leaves, stems, flowers, and umbels) was mainly composed by terpenic hydrocarbon compounds (62.3–72.2 g/100 g). The chemical composition of the volatile fraction isolated from different organs of Daucus muricatus were studied by HS–SPME/GC–RI and GC–MS after optimization of Solid Phase MicroExtraction parameters. The activity of the oil of D. muricatus against eight bacterial strains and one yeast was investigated. The oil from roots revealed active against S. aureus, while the essential oil obtained from the aerial parts was active against the yeast C. albicans
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