Nanostructured cinnamon oil has the potential to control Rhipicephalus microplus ticks on cattle

Abstract

The aim of this study was to evaluate the capacity of pure and nanostructured cinnamon oil to control the infestation and reproductive efficiency of Rhipicephalus microplus on dairy cows. In vitro (stage I)-engorged female ticks were immersed in concentrations of 1.0, 5.0 and 10% of cinnamon oil on its pure form, and 0.5, 1.0, and 5.0% of the nanostructured form. 10% cinnamon oil (pure form) showed 100% efficacy, whereas concentrations of 1 and 5% were 62 and 97% efficacious, respectively. Nanocapsules and nanoemulsions containing cinnamon oil at 5% showed 95 and 97% efficacy, respectively. In vivo (stage II)-16 naturally tick-infested cows were divided into four groups of four animals each: Group A was composed of dairy cows sprayed with Triton (control); Group B was composed of dairy cows sprayed with cinnamon oil in its pure form (5%), whereas groups C and D were composed of dairy cows sprayed with nanocapsules and nanoemulsions, respectively, containing cinnamon oil at 0.5%. The ticks on each animal were counted on days 0, 1, 4 and 20 after spraying. Animals sprayed with pure and nanoencapsulated cinnamon oil carried significantly fewer ticks on days 1 and 4 post-treatment and were free of ticks on day 20 post-treatment. Ticks collected from these dairy cows (24 h after application) had impaired oviposition and larval inhibition, resulting in 90.5 and 100% efficacy when using pure and nanocapsules, respectively. In conclusion, the pure and nanostructured forms of cinnamon oil interfered with tick reproduction, whereas a significant acaricidal effect was found when applied onto cattle.

Preparation of geranium oil formulations effective for control of phenotypic resistant cattle tick Rhipicephalus annulatus

“…Recently, nanocapsules and nanoemulsions containing cinnamon oil showed high efficacy against engorged female of R. ( B. ) microplus 14 , 15 . Also, Boito et al 16 reported that nanoparticles containing oil of the tea tree interfered in the reproduction of R. ( B. )…”

Nanoemulsions of Essential Oils: New Tool for Control of Vector-Borne Diseases and In Vitro Effects on Some Parasitic Agents

“…In comparison, other study made by Monteiro et al [51] showed that the non-emulsioned EO did not caused oviposition inhibition. Moreover, after 20 days, the cows that were previously infested and treated with the nanoemulsion were free of the parasites [49]. Similar work done by Galli et al [50] and contributors with Eucalyptus globulus nanoemulsion showed that the formulations at 1% and 5% inhibited parasite reproduction by 50% and 61.2%, respectively.…”

“…Some groups of researchers have reported the acaricidal activity of EO nanoemulsions against this species. Santos et al [49] demonstrated the activity of the nanoemulsion-based in 5% Cinnamomum verum EO that caused 97% and 63.5% of oviposition inhibition, in vitro and in vivo, respectively. In comparison, other study made by Monteiro et al [51] showed that the non-emulsioned EO did not caused oviposition inhibition.…”

Cinnamomum zeylanicum Essential Oil Reduces Infestation by Alphitobius diaperinus in Poultry Litter

“…The insecticidal action of C. zeylanicum oil was also evaluated [8], who showed that the oil controlled Sitophilus zeamais (Coleoptera: Curculionidae), insects that are resistant to traditional insecticides and nevertheless use physiological and behavioral mechanisms to inhibit activity of the oil. The versatility of C. zeylanicum oil have been demonstrated in the literature, where it has been shown to work as an acaricide, and a fungicide, in addition to its insecticidal effect [4,17,18,21].…”