Nanoemulsion of Ocotea indecora (Shott) Mez essential oil: Larvicidal effects against Aedes aegypti

Machado, Francisco Paiva; Folly, Diogo; Enríquez, J.J.S.; Mello, C.B.; Esteves, Rui; Araújo, Raquel Silva; Toledo, Pedro F.S.; Mantilla‐Afanador, Javier G.; Santos, Marcelo Guerra; Oliveira, Eugênio E.; Ricci-Júnior, Eduardo; Rocha, Leandro

doi:10.1016/j.indcrop.2022.116031

Cited by 11 publications

(8 citation statements)

References 29 publications

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“…The LD 50 and LD 90 values obtained in the laboratory for the formulation can lead to its categorization as a significant larvicidal agent (Machado et al 2023). The micro-and nano-encapsulation of active ingredients, notably botanical products, may lead to somewhat to noticeable increase of lethal concentrations value for the formulated products (Kanis et al 2012;Pavela et al 2021).…”

Section: Discussionmentioning

confidence: 99%

“…These techniques, which lead to the efficient aqueous suspension or dilution of low water-soluble substances, allow obtaining usable bioactive natural products against mosquito larvae (Kanis et al 2012;Oliveira et al 2016;Pavela 2016;Pavela et al 2021). The lower effect on non-target organisms than conventional products also stands among the potential advantages of natural-products-based micro-and nanoemulsions as larvicide products, and low toxicity for humans is notably an important parameter to look after, due to the use of such products in the household area (Oliveira et al 2016;Pavela et al 2019;Turchen et al 2020;Faustino et al 2020;Rodrigues et al 2021;Machado et al 2023).…”

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confidence: 99%

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Efficacy and selectivity of Sextonia rubra wood extracts and formulation in the control of Aedes aegypti strains

Clervil,

Duchemin,

Amusant

et al. 2024

J Pest Sci

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Sextonia rubra is an Amazonian tree known for the larvicide activity of its wood extracts against Aedes aegypti. However, the lipophilic character of this extract represents an obstacle to the development of vector management products. The purpose of this study was to assess the feasibility, efficacy and selectivity of a water-soluble formulation based on a S. rubra wood extract characterized by its content in the larvicidal compounds rubrenolide and rubrynolide. Using reference and wild strains, the larval mortality, oviposition behavior, hatching response, and fitness of the mosquitoes exposed to the extract were evaluated. Laboratory eco-and cytotoxicity bioassays were concurrently performed. The extract showed larvicide efficacy alongside with no repulsive effect on oviposition, thus supporting its interest for the treatment of breeding sites. The formulation exhibited strong acute toxicity, leading to 100% larval mortality in 2 to 4 days either in dry or rainy season at the test dose of 102 µg/ml under semioperational conditions, with a residual activity maintained during the 5 weeks of test.The formulation allowed for a noticeable gain in selectivity compared with the extract, with lower immobilization rates for D. magna and C. riparius, and no significant toxicity towards human cells lines (IC 50 > 100 µg/ml). These results highlight the potential of a S. rubra-based formulation for the management of Ae. aegypti larvae, including strains showing resistance to conventional insecticides.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Efficacy and selectivity of Sextonia rubra wood extracts and formulation in the control of Aedes aegypti strains

Clervil,

Duchemin,

Amusant

et al. 2024

J Pest Sci

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“…p-cymene (27.70 %) and α-pinene (22.31 %) were the main constituents of the EO (Faustino et al, 2020). In turn, the nanoemulsioned EO from Ocotea indecora leaves presented LC 50 values against A. aegypti larvae equal to 61.4 ppm after 48 h. Interestingly, sesquirosefuran was the major compound, presenting 81.4 % of EO composition (Machado et al, 2023). Furthermore, EOs from E. punicifolia leaves collected from two different regions of Brazil (Goiás and Minas Gerais) presented different levels of action on A. aegypti L3 larvae (LC 50 = 85.53 µg/mL and 91.52 µg/mL, respectively), besides their main chemical compounds (Bicyclogermacrene (26.73 %), Germacrene D (21.34 %) and β-longipenene (9.42 %) in Goiás and Spathulenol (26.84 %), (Z)-caryophyllene (8.92 %), α-cadinol (6.28 %), γcadinene (6.27 %), and caryophyllene oxide (6.02 %) in Minas Gerais) (L.S.…”

Section: Aedes Aegypmentioning

confidence: 93%

Essential oils from Carapebus sandbank plants as natural controllers against insect pests of importance in Brazilian public health and agriculture

Albuquerque¹,

Rocha²

2023

NRFHH

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The use of biological controllers of natural origin against pests of agricultural and health importance has been increasingly recommended in recent years due to lower environmental toxicity, in addition to promoting greater safety for human and animal health. At the same time, the development of studies with native and promising plant resources, which are still little studied, means that conservation measures for these species are encouraged. In this context, this review aims to optimize and discuss the use of essential oils from plants that grow in Carapebus sandbanks as controllers of Brazil's most important agricultural pests and disease transmitters. This work was presented as an important tool for promoting plant resources in the fight against these pests in Brazilian territory, aiming to stimulate more eco-friendly and safer-health agents in agronomic practices and for the urban and rural population use. Furthermore, these essential oils, in addition to presenting an interesting potential to be used as organic insecticides, also contribute to the valorization of native species.

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“…Selain karena jenis minyak atsiri yang digunakan, penetrasi melalui kutikula sangat penting untuk aktivitas larvasida dimana dalam bentuk nanoemusi ukuran partikel menjadi salah satu faktor (Duarte et al, 2015). Oleh karena itu, beberapa penelitian larvasida dengan nanoemulsi minyak atsiri menekankan formulasi yang dilakukan, dimana beberapa nanoemulsi minyak atsiri yang stabil memiliki aktivitas larvasida sehingga berpotensi digunakan sebagai insektisida (Machado et al, 2023).…”

Section: Nanoemulsiunclassified

Review Development of Essential Oil Nano Preparation Formulations to Pharmacological Activity

Zahra

2023

JPS

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Essential oils are liquids from the extraction process of plants or parts of aromatic plants which generally contain volatile terpenoids. This oil is characterized by distinctive odor from each plant that causes by differences in its constituent compounds. Essential oils have many pharmacological activities such as antioxidant, antibacterial etc. The development of many nano formulations has been developed, including essential oils. Nanoemulsion, nanogel, and nanoemulgel are forms of nano formulations that are applied in the manufacture of pharmaceutical preparations containing essential oils. Therefore, the purpose of this review is to present the results of the latest research on essential oil formulations using nanotechnology that have been widely developed and their effect on pharmacological activity. The articles used in this review were published from 2013-2023 which are indexed by Scopus. The formulation of essential oil preparations in nano form enhances the pharmacological effects of essential oils including increasing the effects of antioxidants, antibacterial, antifungal, antiproliferative, antiviral and reducing toxicity which can be useful as a reference for nano preparation formulations for essential oils.

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Nanoemulsion of Ocotea indecora (Shott) Mez essential oil: Larvicidal effects against Aedes aegypti

Cited by 11 publications

References 29 publications

Efficacy and selectivity of Sextonia rubra wood extracts and formulation in the control of Aedes aegypti strains

Efficacy and selectivity of Sextonia rubra wood extracts and formulation in the control of Aedes aegypti strains

Essential oils from Carapebus sandbank plants as natural controllers against insect pests of importance in Brazilian public health and agriculture

Review Development of Essential Oil Nano Preparation Formulations to Pharmacological Activity

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