Acaricidal activity against Ixodes ricinus nymphs of essential oils from the Libyan plants Artemisia herba alba, Origanum majorana and Juniperus phoenicea

Elmhalli, Fawzeia; Garboui, Samira S.; Karlson, A.; Mozūraitis, Raimondas; Baldauf, Sandra L.; Grandi, Giulio

doi:10.1016/j.vprsr.2021.100575

Cited by 8 publications

(4 citation statements)

References 52 publications

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“…On the other hand, the average yield of A. herba-alba EO collected in Spain ranged from 0.56% to 1.23% [25], and that of the plant grown in Biskra and M'sila in Algeria was 0.95% and 1.02%, respectively [26,27].The present study identified 32 constituents of Artemisia herba-alba EOs (Table 1). In this study, beta-thujone (30.07%) and alpha-thujone (13.32%) were identified as the main constituents of EOs, followed by a few compounds such as spirojatamol (2.95%), sabinene (0.75%), terpinen-4-ol (2.09%), globulol (2.95%), 1,8-cineole (4.67%), endo-borneol (0.64%), thymol (0.71%), beta-santalol (3.38%), and caryophyllene oxide (0.93%).These results are consistent with the chemical composition of A. herba-alba EOs grown in Mediterranean regions [28,29]. However, some chemicals present in the Artemisia herba-alba EOs studied in the present study have been noted for A. herba-alba growing in other regions [30,31].…”

Section: Essential Oils From Artemisia Herba-albasupporting

confidence: 85%

Anticorrosive Effects of Essential Oils Obtained from White Wormwood and Arâr Plants

et al. 2023

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This article is part of the contribution to the development of two medicinal plants widely used by the Moroccan population: white wormwood (Artemisia herba-alba) andArâr (Juniperus phoenicea), species belonging to the Asteraceae and Cupressaceae families, respectively. The present work was conducted to investigate the chemical composition and anticorrosive properties of essential oils (EOs) extracted from these plants. The chemical analysis of the essential oils (EOs) was carried out by GC-MS/MS. Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and quantum chemical calculations by density-functional theory at B3lYP were used to study the anticorrosive effect of the researched oils on mild steel in 1 M hydrochloric acid solution. Moreover, SEM-EDX analysis was used to identify the surface morphology of mild steel surface. GC-MSMS results showed the presence of 32 potentially active compounds in the EOs of Artemisia herba-alba. The average yield of the EOs was about 1.39 ± 0.17 mL/100 g dry matter. Beta thujone (30.07%) and alpha thujone (13.32%) are the main components, while for the EOs of Juniperus phoenicea, the study showed the presence of 30 constituents, with alpha-pinene (43.61%) and manoyl oxide (11.5%) as the main components. The average yield of HE was 1.10 ± 0.03 mL/100 g dry matter. The findings demonstrated an important anticorrosive action of EOs from Artemisia herba-alba and Juniperus phoenicea. Notably, the experimental results showed good efficiency of the studied essential oils and correlated well with the density-functional theory (DFT) calculations. The results of potentiodynamic polarization measurements showed that hydrazone acted as a mixed-type inhibitor. The EIS results showed an increase in charge transfer resistance accompanied by a noticeable decrease in Cdl values, revealing that both studied oils were effective as reliable inhibitors for the protection of mild steel in 1 M HCl solution. Also, the efficiency decreased with decreasing inhibitor concentrations. Surface studies ensure the effectiveness of both investigated oils and the reduction of the surface roughness of mild steel. Furthermore, DFT results of the major constituents of Artemisia herba-alba and Juniperus phoenicea EOs revealed insights into the chemical reactivity of the tested oils while supporting the experimental conclusions and showed outstanding adsorption ability of both investigated EOs on the steel surface.

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Section: Essential Oils From Artemisia Herba-albasupporting

confidence: 85%

Anticorrosive Effects of Essential Oils Obtained from White Wormwood and Arâr Plants

et al. 2023

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“…The most abundant carvacrol component was found to be the first most abundant compound in previous studies: 84.00% [51], 78.27% [77], 75.30% [51], 40.57% [78], 34.14% [79]. In our study, the other main components, α-Terpineol [45,78,[80][81][82], p-Cymene [51,80,[83][84][85][86], α-Terpineol [45,78,[80][81][82], y-Terpinene [46,51,[77][78][79][80][81][83][84][85][86][87][88], and 1,8 Cineole [45,80,83,89,90], were in line with previous studies.…”

Section: Discussionsupporting

confidence: 66%

Phytotoxic Effects of Three Origanum Species Extracts and Essential Oil on Seed Germinations and Seedling Growths of Four Weed Species

Kordalı

Kabaagac

Şen³

et al. 2022

Agronomy

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The use of chemical pesticides to protect agricultural products is a global concern because of their adverse effects on the environment and public health. To avoid the dangers of synthetic herbicides, research has turned to natural alternatives. This study was conducted to evaluate the allelopathic effect of essential oil (EO) extracted from Origanum syriacum, Origanum onites, and Origanum majorana. In addition, the chemical composition of the essential oil was elucidated by gas chromatography and mass spectrometry (GC–MS) analysis. A total of 11 different components of O.syriacum were identified, and the main components were carvacrol (88.49), p-Cymene (5.71), γ-Terpinene (1.63), β-Caryoplhyllene (1.48), and Terpinen-4-ol (0.65), respectively. For O. onites, 10 different compounds were identified, and the main components were carvacrol (58.65), Thymol (30.97), Linalool (4.17), p-Cymene (1.94), and β-Caryoplhyllene (0.98), respectively. Finally, for O. majorana, 14 different compounds were identified, and the main components were carvacrol (40.57), α-Terpineol (29.28), p-Cymene (9.02), γ-Terpinene (5.80), and carvacrol methyl ether (3.46). Finally, 14 compounds from the Origanum majorana species were identified, with carvacrol (40.57), -Terpineol (29.28), p-Cymene (9.02), and -Terpinene (5.80) as the parent compound (3.46). Oxygenated monoterpenes were the highest in all species’ EO content. EOs and plant extracts were tested at 5, 10, and 20 L/Petri concentrations against seed germination and seedling growth in four weed species (Thlaspi arvense, Amaranthus retroflexus, Rumex cripus, and Lactuca serriola). The concentrations of essential oil were set as 5, 10, and 20 µL/Petri dishes for seed germination. In the greenhouse experiment, the final concentration of solutions was set as 20 µL and the solutions were directly sprayed on the surface of the weeds, and the mortality rates were noted after 24 and 48 h of application. It was observed that increasing the application decreased seed germination. The phytotoxic effects on the seedling germination in the greenhouse were observed, resulting in 48.76–94% mortality rates. Consequently, the essential oil from Origanum species could be considered as an alternative bio-herbicide to tested weeds.

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“…Africana (rich in sabinene, α-pinene, and γ-terpinene) against H. aegyptium 17 and J. phoenica (rich in α-terpinyl acetate, α-pinene, and germacene D) against Ixodes ricinus. 55 None of these oils were chemically similar to the ones studied here. Essential oils rich in some of these components have been described as ixodicidal.…”

Section: Resultsmentioning

confidence: 99%

Valorization of the Sabinas Forest Waste (Juniperus phoenicea and Juniperus thurifera) as Source of Biopesticides

Galisteo,

Zaher,

Lopez-Menchero

et al. 2024

Natural Product Communications

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Objectives: The potential forestry use of Juniperus phoenicea and Juniperus thurifera pruning woods is studied by analyzing the composition of the woods and testing the biological activities of the corresponding components with the ultimate target of finding new biopesticides. Methods: The air-dried wood from each plant was crushed and subjected to hydrodistillation, and the residue was extracted with a Soxhlet apparatus using different solvents. The corresponding extracts were fractionated, and their composition were studied by gas chromatography-mass spectrometry and nuclear magnetic resonance techniques. The ixodicidal and antifungal activities of the different samples obtained were evaluated. Results: The fraction oxygenated of the essential oil from both J. thurifera (cedrol >60%) and J. phoenicea shows a remarkable bioactivity as antitick with EC50 values of 3.4 μg/mg and 10 μg/mg, respectively. Cedrol and methyl hinokiate, present in the hexane extract J. thurifera, show a potent antifungal effect against Aspergillus niger with EC50 values of 45.99 and 52.23 μg/mL, respectively. Conclusions: Pruning woods from these species proved to be renewable and easily accessible sources of bioactive natural products such as cedrol, thujopsene, nootkatone, and totarol.

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Acaricidal activity against Ixodes ricinus nymphs of essential oils from the Libyan plants Artemisia herba alba, Origanum majorana and Juniperus phoenicea

Cited by 8 publications

References 52 publications

Anticorrosive Effects of Essential Oils Obtained from White Wormwood and Arâr Plants

Anticorrosive Effects of Essential Oils Obtained from White Wormwood and Arâr Plants

Phytotoxic Effects of Three Origanum Species Extracts and Essential Oil on Seed Germinations and Seedling Growths of Four Weed Species

Valorization of the Sabinas Forest Waste (Juniperus phoenicea and Juniperus thurifera) as Source of Biopesticides

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