Efectos del aceite esencial de Eucalyptus globulus cargado en nanoemulsiones y en nanocápsulas en la reproducción de la garrapata bovina (Rhipicephalus microplus)

Galli, Gabriela M.; Volpato, V.; Santos, Roberto C.V.; Gebert, Roger R.; Quatrin, Priscilla Maciel; Ourique, Aline Ferreira; Klein, Bruna; Wagner, Róger; Tonin, Alexandre Alberto; Baldissera, Matheus D.; Stefani, Lenita M.; Silva, A.S. Da

doi:10.21071/az.v0i0.3879

Cited by 9 publications

(6 citation statements)

References 11 publications

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“…Also, some previous works showed that adult ticks are signi cantly more resistant than larva [32,33]. In line with our results, nanostructured forms of Eucalyptus globulus was not effective on the reproduction of Rhipicephalus microplus [34]. Similar data reported after using Tea tree and lemon nano oils on adult female of R. annulatus [35] and nano EO of Cinnamomum verum on R. microplus [36].…”

Section: Discussionsupporting

confidence: 89%

The acaricidal and repellent activity of the essential and nano essential oil of Thymus vulgaris against the brown dog tick, Rhipicephalus sanguineus (Acari: Ixodidae)

Alibeigi,

Rakhshandehroo,

Saharkhiz

et al. 2023

Preprint

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Background The brown dog tick is globally distributed and harms the host in terms of blood feeding and pathogen transferring. Chemicals are traditionally used for the control, but herbal plants has been investigated mainly due to their natural components with killing and repellant effects. Previously, the role of thymol has been described for the biocontrol of ticks at different stages. Therefore, was conducted a study to evaluate the effects of a thymol-rich herbal plant, Thymus vulgaris L., and its major constituents on Rhipicephalus sanguineus. Results In this work, we suggested to perform the larval mortality test using 2 ml microtubes instead of previously described pocket and immersion methods. This method seems to be closer to the environmental condition. The results represented a great activity of the nano EO and thymol on live larva. The nano form was highly effective starting from the lowest concentration (0.125%) showing 88.9% mortality. In comparison, the EO revealed similar effects but at higher concentrations. The nano emulsion and thymol showed also a complete repellency effect against larva at the concentrations of 0.5% and 20 mg/ml, respectively. In adult tick bioassays, thymol was the only substance that accompanied with a statistically significant reduction in female oviposition rate (p < 0.05), however at its utmost concentrations. Conclusion According to the results, the nano EO of T. vulgaris is recommended for the biologic control against R. sanguineus larva. In addition, further studies should be done on the nano material to enhance its effect on the adult female tick reproduction.

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Section: Discussionsupporting

confidence: 89%

The acaricidal and repellent activity of the essential and nano essential oil of Thymus vulgaris against the brown dog tick, Rhipicephalus sanguineus (Acari: Ixodidae)

Alibeigi,

Rakhshandehroo,

Saharkhiz

et al. 2023

Preprint

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“…It is noteworthy that the current EO nanoemulsions displayed lower activity levels than the pure oils against adult ticks. Galli et al [34] reported similar levels of effectiveness for pure, nanoemulsion, and nanocapsule forms of Eucalyptus globulus EO against Rhipicephalus microplus ticks. This result can be explained by the fact that a variety of factors, such as the temperature, storage time, pH, and ionic strength, have negative impacts on nanoemulsion stability.…”

Section: Discussionmentioning

confidence: 94%

Acaricidal Activity of Tea Tree and Lemon Oil Nanoemulsions against Rhipicephalus annulatus

Ibrahium¹,

Wahba²,

Farghali

et al. 2022

Pathogens

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Tick infestation is a serious problem in many countries since it has an impact on the health of animals used for food production and pets, and frequently affects humans. Therefore, the present study aimed to investigate the acaricidal effects of nanoemulsions of essential oils of Melaleuca alternifolia (tea tree, TT) and Citrus limon (lemon oil, CL) against the different stages (adult, eggs, and larvae) of deltamethrin-resistant Rhipicephalus annulatus ticks. Three forms of these oils were tested: pure oils, nanoemulsions, and a binary combination. Tea tree and lemon oil nanoemulsions were prepared, and their properties were assessed using a zeta droplet size measurement and a UV-Vis spectrophotometer. The results showed that TT and CL exhibited higher adulticidal effects in their pure forms than in their nanoemulsion forms, as demonstrated by the lower concentrations required to achieve LC50 (2.05 and 1.26%, vs. 12.8 and 11.4%, respectively) and LC90 (4.01% and 2.62%, vs. 20.8 and 19.9%, respectively). Significant larvicidal activity was induced by the TTCL combination, and LC50 was reached at a lower concentration (0.79%) than that required for the pure and nanoemulsion forms. The use of pure CL oil was found to have the most effective ovicidal effects. In conclusion, pure TT and CL have potent acaricidal effects against phenotypically resistant R. annulatus isolates. It is interesting that the activity levels of TT and CL EOs’ binary and nanoemulsion forms were lower than those of their individual pure forms.

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“…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. All oil nanoemulsions with acaricidal activity are shown in Table 2.…”

Section: Biological Activities Of Essential Oil Nanoemulsionsmentioning

confidence: 74%

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

Echeverría

Albuquerque

2019

Medicines

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The control of infectious/parasitic diseases is a continuing challenge for global health, which in turn requires new methods of action and the development of innovative agents to be used in its prevention and/or treatment. In this context, the control of vectors and intermediate hosts of etiological agents is an efficient method in the prevention of human and veterinary diseases. In later stages, it is necessary to have bioactive compounds that act efficiently on the agents that produce the disease. However, several synthetic agents have strong residual effects in humans and other animals and cause environmental toxicity, affecting fauna, flora and unbalancing the local ecosystem. Many studies have reported the dual activity of the essential oils (EOs): (i) control of vectors that are important in the cycle of disease transmission, and (ii) relevant activity against pathogens. In general, EOs have an easier degradation and cause less extension of environmental contamination. However, problems related to solubility and stability lead to the development of efficient vehicles for formulations containing EOs, such as nanoemulsions. Therefore, this systematic review describes several studies performed with nanoemulsions as carriers of EOs that have larvicidal, insecticidal, repellent, acaricidal and antiparasitic activities, and thus can be considered as alternatives in the vector control of infectious and parasitic diseases, as well as in the combat against etiological agents of parasitic origin.

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Efectos del aceite esencial de Eucalyptus globulus cargado en nanoemulsiones y en nanocápsulas en la reproducción de la garrapata bovina (Rhipicephalus microplus)

Cited by 9 publications

References 11 publications

The acaricidal and repellent activity of the essential and nano essential oil of Thymus vulgaris against the brown dog tick, Rhipicephalus sanguineus (Acari: Ixodidae)

The acaricidal and repellent activity of the essential and nano essential oil of Thymus vulgaris against the brown dog tick, Rhipicephalus sanguineus (Acari: Ixodidae)

Acaricidal Activity of Tea Tree and Lemon Oil Nanoemulsions against Rhipicephalus annulatus

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

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