The repellency and toxicity effects of essential oils from the Libyan plants Salvadora persica and Rosmarinus officinalis against nymphs of Ixodes ricinus

Elmhalli, Fawzeia; Garboui, Samira S.; Borg‐Karlson, Anna‐Karin; Mozūraitis, Raimondas; Baldauf, Sandra L.; Grandi, Giulio

doi:10.1007/s10493-019-00373-5

Cited by 17 publications

(10 citation statements)

References 52 publications

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“…Rosemary has economic values owing to its medicinal properties and culinary usage, and it is frequently used in confectionery, perfumery [2,3], and food preservatives, especially meat [4]. Commercially, rosemary and its oil are highly-prized [5]. The plant is also available as dried herbs, with herbalists selling the aromatic and medicinal plants together with its oil in the community pharmacy.…”

Section: Introductionmentioning

confidence: 99%

Drying Induced Impact on Composition and Oil Quality of Rosemary Herb, Rosmarinus Officinalis Linn

et al. 2020

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The natural drying of Rosmarinus officinalis Linn. herbs severely affects its volatile oil quality and yields, which is reported here for the first time. The oils obtained through hydrodistillation from fresh, one, two, and three-weeks dried herbs were analyzed by gas chromatography–mass spectroscopy (GC–MS) and gas chromatography–flame ionization detector (GC-FID), and the yields were 198 ± 3.45, 168.7 ± 5.11, and 97.8 ± 1.27 mg, respectively, as compared to the internal referral standard of 327 ± 5.91 mg yield of the one-week dried herbs’ oil. Camphor, the major constituent, significantly depleted from 20.96% to 13.84%, while bornyl acetate yields increased from 1.42% to 12.46% (p values < 0.0001) in three-weeks drying, reflecting the redox processes undergoing within the oil during drying. Several constituents (25) were found in one-week dried herbs’ oil as compared to the fresh, two-, and three-weeks oils, which consisted of 23, 19, and 14 constituents, respectively, leading to the recommendation of the one-week drying of the herb for maximum oil yield. The DPPH (2, 2-diphenyl-1-picryl-hydrazyl) reactivity was highest for the two- and three-weeks dried herb-based oils, followed by the one-week dried- and fresh-herb-based oils (p < 0.0001), again indicating major chemical changes during herbs’ dryings, affecting the free-radical scavenging capacity of these batches of oils obtained after different drying times.

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Section: Introductionmentioning

confidence: 99%

Drying Induced Impact on Composition and Oil Quality of Rosemary Herb, Rosmarinus Officinalis Linn

et al. 2020

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“…Previous reports have shown a moderate post-ingestive toxicity to S. littoralis for a similar R. officinalis EO (Santana et al, 2014). R. officinalis EOs rich in 1,8-cineole were toxic to larvae of Hyalomma scupense (Djebir et al, 2019) and I. ricinus nymphs (Elmhalli et al, 2019), while an EO rich in α-pinene showed low-moderate toxicity against larvae of R. (B.)…”

Section: Thymus Zygismentioning

confidence: 81%

Acaricidal and Insect Antifeedant Effects of Essential Oils From Selected Aromatic Plants and Their Main Components

et al. 2021

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This work has demonstrated the ixodicidal and insect antifeedant effects of essential oils from 14 experimentally cultivated aromatic plants. The strong ixodicidal and antifeedant oils corresponded to Thymus zygis, Thymus vulgaris, Satureja montana, Oreganum virens, and Mentha suaveolens. The moderately active oils were from Lavandula angustifolia, Mentha piperita, Mentha spicata, Artemisa herba-alba, and Rosmarinus officinalis. The most effective larvicidal and antifeedant compounds were piperitenone oxide, carvacrol, piperitenone, and thymol, explaining the effects of the most active essential oils. The rest of the tested compounds were not ixodicidal or antifeedant. Therefore, the activity of moderately active oils cannot be explained by their main components (linalyl acetate, linalool, menthone, menthol, limonene, camphor, 1,8-cineole, p-cymene, α-pìnene, and carvone), suggesting synergistic effects. Considering the ixodicidal and antifeedant effects of these extracts, the plants have been ranked in relation to Thymus vulgare, a commercial biopesticide ingredient, for their potential as botanical pesticides. T. zygis, S. montana, and M. suaveolens ranked over T. vulgaris as ixodicidal agents and S. montana as insecticidal. Therefore, we propose the plant populations of S. montana, T. zygis, and M. suaveolens tested here for further development as biopesticide ingredients.

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“…Essential oils are the most studied plant-derived compounds for tick control and prevention [9,16,18,122]. Two effects of essential oils against ticks were observed: acaricidal or repellent effects [9,16,[122][123][124][125][126][127]. They cause various effects against ticks: feeding inhibition [125,128,129], inhibition of chitin synthesis [9,78,129], decrease in growth, development, or reproduction [9,78,125,126,128,130], and affect tick behavior [129].…”

Section: Mechanisms Of Action Of the Essential Oils And/or Their Components Against Ticksmentioning

confidence: 99%

“…Many plants and/or their essential oils have a repellent effect against arthropods [122,126,152,153].…”

Section: Repellent Effectsmentioning

confidence: 99%

Acaricidal and Repellent Effects of Essential Oils against Ticks: A Review

Selles

Kouidri

González³

et al. 2021

Pathogens

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Tick control is a priority in order to prevent the transmission of vector-borne diseases. Industrial chemical acaricides and repellents have been the most efficient tools against hard ticks for a long time. However, the appearance of resistances has meant the declining effectiveness of the chemicals available on the market. The trend today is to develop alternative control methods using natural products to replace nonefficient pesticides and to preserve the efficient ones, hoping to delay resistance development. Traditional in vitro evaluation of acaricidal activity or resistance to synthetic pesticides have been reviewed and they mainly focus on just one species, the one host tick (Rhipicephalus (Boophilus) microplus (Acari: Ixodidae)). Recent reports have called for the standardization of natural product components, extraction techniques, and experimental design to fully discover their acaricidal potential. This study reviews the main variables used in the bibliography about the efficiency of natural products against ticks, and it proposes a unification of variables relating to ticks, practical development of bioassays, and estimation of ixodicidal activity.

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The repellency and toxicity effects of essential oils from the Libyan plants Salvadora persica and Rosmarinus officinalis against nymphs of Ixodes ricinus

Cited by 17 publications

References 52 publications

Drying Induced Impact on Composition and Oil Quality of Rosemary Herb, Rosmarinus Officinalis Linn

Drying Induced Impact on Composition and Oil Quality of Rosemary Herb, Rosmarinus Officinalis Linn

Acaricidal and Insect Antifeedant Effects of Essential Oils From Selected Aromatic Plants and Their Main Components

Acaricidal and Repellent Effects of Essential Oils against Ticks: A Review

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