The current consumer demands together with the international regulations have pushed cosmetic industry to seek new active ingredients from natural renewable sources for manufacturing more eco-sustainability and safe products, botanical extract being an almost unlimited source of these actives. Essential oils (EOs) emerge as very common in cosmetics toiletries a result both their odorous character design fragrances perfumes, many beneficial properties individual components (EOCs), e.g.,...

Journal Article Insecticidal Activity of Essential Oils From Eleven Eucalyptus spp. and Two Hybrids: Lethal Sublethal Effects Their Major Components on Blattella germanica Get access Raul A. Alzogaray, Alzogaray Search for other works by this author on: Oxford Academic PubMed Google Scholar Alejandro Lucia, Lucia Eduardo N. Zerba, Zerba Hector M. Masuh 3 3Corresponding author, e-mail: hmasuh@citefa.gov.ar Economic Entomology, Volume 104, Issue 2, 1 April 2011, Pages 595–600,...

Background Essential oil components (EOCs) are molecules with interesting application in pest control, these have been evaluated against different insect from more than 100 years, but their practical use is rather limited. Thus, the enhancement of bioavailability and manageability due to dispersion water can open new perspective for preparation formulations control pest. In this work, we studied encapsulation monoterpenes a poloxamer shell order prepare aqueous that be used development...

Dengue, chikungunya, and yellow fever are important vector-borne diseases transmitted by female mosquitoes when they feed on humans. The use of repellents based natural products is an alternative for personal protection against these diseases. Application chemicals with larvicidal activity another strategy controlling the mosquito population. repellent activities essential oil from Eucalyptus nitens were tested Aedes aegypti albopictus, main vectors arboviruses. was extracted...

The efficacy of technical pyriproxyfen and diflubenzuron was evaluated at the laboratory level against Aedes aegypti, where we achieved adult emergence inhibition (EI50) values 0.048 1.59 ppb (µg/liter), respectively. We compared these data with obtained for temephos. prepared emulsifiable concentrate formulations in EI50 0.01 0.02 ppb, also 100% 0.1% slow-release sand diflubenzuron. In a simulated field study, granular pyriproxyfen, diflubenzuron, temephos remained active over 4 mo. 0.2%...

Abstract The insecticidal activity of essential oils from 12 species Eucalyptus (Myrtaceae) was evaluated on larvae Aedes aegypti (L.) (Diptera: Culicidae), the most important vector dengue and yellow fever in Americas. Oils were obtained by hydrodistillation their chemical composition determined gas chromatography coupled to mass spectrometry; yields ranged 0.2 2.5%. Essential mainly composed 1,8‐cineole, α‐pinene, α‐phellandrene, β‐phellandrene, γ‐terpinene, 4‐terpineol, α‐terpineol, p...

Abstract δ‐Nonalactone is a cyclic hydroxycarboxylic acid ester with six‐membered ring found in several fruits and animal products for human consumption. It has shown repellent activity tsetse flies Glossina pallidipes Wiedemann (Diptera: Glossinidae) morsitans Westwood Glossinidae), as well first instar nymphs of the German cockroach, Blattella germanica Linnaeus (Hemiptera: Ecotibiidae). The aim this study was to investigate behavioral response cockroach repellence produced by...

Journal Article Chemical Composition and Fumigant Toxicity of the Essential Oils From 16 Species Eucalyptus Against Haematobia irritans (Diptera: Muscidae) Adults Get access Laura W. Juan, Juan Search for other works by this author on: Oxford Academic PubMed Google Scholar Alejandro Lucia, Lucia Eduardo N. Zerba, Zerba Leonel Harrand, Harrand Martin Marco, Marco Hector M. Masuh 4 4Corresponding author, e-mail: hmasuh@citefa.gov.ar Economic Entomology, Volume 104, Issue 3, 1 June 2011, Pages...

Essential oil compounds (EOCs) are molecules with well-known antimicrobial and antipest activity. However, such possess limited solubility in water, making their handling difficult. This work aimed to enhance the distribution of a solid essential compound, thymol, using oil-in-water (o/w) microemulsions for its solubilization. The use mixtures formed by an alkyl polyglucoside (APG) soybean lecithin (SL) allowed stabilization o/w broad range compositions, total concentration mixture two...

In this work, monodisperse agarose gel nanoparticles were prepared using a W/O microemulsion as template to control the size of obtained particles. The combination method with temperature-induced gelling and solvent exchange methodology has allowed preparing stable aqueous dispersions in water. average size, measured an apparent hydrodynamic diameter, particles was around 150 nm. ability hydrogel for encapsulation release synthetic insecticide (azamethiphos) tested. results evidence that...

This study focuses on the use of oleic acid to disperse thymol as nanodroplets, stabilized by a mixture alkylpolyglucoside and lecithin, in an aqueous environment. approach aims develop innovative platforms for encapsulation release poorly water-soluble molecules such thymol, useful drug delivery insecticide systems. The results highlight critical role controlling content concentration oil phase (thymol-oleic mixture) achieving optimal dispersion nanodispersion stability. interplay between...

Oil in water (o/w) emulsions stabilized by an amphiphilic copolymer have been studied relation to their potential insecticidal activity against Aedes aegypti mosquito larvae. These contain as the oil phase different blends of two isomeric essential compounds, thymol and carvacrol. The results show that addition carvacrol facilitates dispersion within aqueous phase, with stabilization polydispersity being controlled change ratio between concentration (Rcop/EOC). Emulsions containing pure...

Synthetic insecticides have been used for a long time as one of the most effective tools insect pest control. However, re-emergence pests and their fast development resistance, has occurred pyrethroid-resistant bed bugs