Chemical Variability of the Essential Oil of Pituranthos scoparius from Algeria

Abstract

The chemical composition of 93 oil samples from the aerial parts of Pituranthos scoparius, harvested in three regions of Algeria, was investigated by GC-FID, GC/MS and C-NMR. Monoterpene hydrocarbons dominated in association with phenylpropanoids and a chemical variability was found highlighting three clusters. The composition of group I (36 samples) exhibited an atypical composition characterized by a very high contents of 6-methoxyelemicine (13.0 - 59.6%), followed by sabinene (1.1 - 43.0%) and limonene (6.6 - 39.0%), while the samples of group II (12 samples) contained a high content of limonene (9.2 - 44.0%), followed by myristicine (0.0 - 29.4%) and a lower amount of sabinene (0.8 - 2.3%). Group III (45 samples) could be divided in two subgroups. Subgroup SGIIIA was characterized by a very high content of sabinene (28.0 - 55.6%), followed by elemicine (0.0 - 29.1%), while the samples belonging to SGIIIB were characterized by the lower content of sabinene (6.2 - 35.5%) and a significant content of myristicine (1.5 - 32.4%), α-pinene (4.2 - 31.0%) and dill apiole (0.1 - 31.4%). Each harvested region was characterized by a different chemical composition.

Effect of Environmental Conditions on the Yield of Peel and Composition of Essential Oils from Citrus Cultivated in Bahia (Brazil) and Corsica (France)

“…A water deficit was previously found to reduce the total EO production in S. officinalis [86], parsley [87], and Mexican oregano [88] while it improved the EO yield in sage [89]. In Pituranthos scoparius EO from three regions in Algeria, there is likely a closer relationship between the oil composition and the annual rainfall than between this composition and the temperature levels [90].…”

Essential oil of Cymbopogon martini, source of geraniol, as a potential antibacterial agent against Bacillus subtilis, a pathogen of the bakery industry

“…2 The composition of EOs from the same species of plant can vary with geographic location, the harvesting season, the part of the plant being distilled, or extraction method. 3,4 The chemical composition of EOs is complex; some of them have around 20 to 60 different bioactive components, only two or three of which are in concentrations within a range of 20% to 70%, with the rest found in trace amounts. Within this mix of bioactive components, two different compound groups can be identified: terpenes and terpenoids.…”

Antibacterial Properties of Cymbopogon martinii Essential Oil against Bacillus subtillis Food Industry Pathogen

“…The chemical composition of EOs is complex, one of them, there may have around of 20-60 different bioactive components and only two or three are the major components at concentration within a range of 20-70%; the others are in traces. These composition of EOs from a one species of plant can differ from the geographic location, the harvesting seasons or extraction method [1,2].…”