Structure/Activity Relationship of Some Natural Monoterpenes as Acaricides Against Psoroptes cuniculi (original) (raw)
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2021
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 plant...
Iranian Journal of Toxicology
Background: Hydatidosis is a common disease of both humans and animals, resulting from infection with the larvae of Echinococcus granulosus tapeworm. The aim of this study was to investigate the antiparasitic (protoscolicidal) activities of three essential oils in vitro. Methods: This study was designed to evaluate the biochemical composition and in vitro antiparasitic effects of Zataria multiflora, Origanum vulgare and Mentha pulegium essential oils. Gas chromatography was performed to identify the main components of the herbal oils. To determine the antiparasitic properties of the essential oils, live protoscoleces from hydatid cysts were exposed to three concentrations of the herbal oils and were incubated at 37°C for 5, 10, 15, 20 or 25 minutes. Results: The biochemical analysis of these oils indicated that carvacrol and thymol were the major compounds of the Zataria oil. Further, carvacrol and thymol in Origanum essential oil and pulegone and piperitone in Mentha oil were the m...
Insecticidal activity of essential oils from six Moroccan plants against insect pests
2018
Six essential oils from Morrocan plants belonging to different botanical families (Lamiaceae, Pinaceae and Verbenaceae), were prepared by hydrodistillation. These essential oils from Morrocan plants, which have a long tradition in adjuvant therapy, were tested for insecticidal activity by the method of microcomputer-atmosphere against three major pests of stored products : Rhyzopertha dominica (F), Sitophilus oryzae (L) and Tribolium castaneum (herbst). The results obtained showed that the essential oils possessed highly significant insecticidal properties against the pests studied. R (+) pulegone, a monoterpene ketone and a major component of the essential oil of Mentha pulegium exhibited the highest insecticidal activity.