title: Essential oils nanoformulations for stored-product pest control - characterization and biological properties.
abstract: The lethal and sublethal activity of poly(ethylene glycol) (PEG) nanoparticles containing essential oils (EO), also the physicochemical characterization, were determined against Tribolium castaneum and Rhizopertha dominica. The 10% ratio EO-PEG nanoparticles showed an average diameter<235 nm (PDI<0.280) and a loading efficacy>75%; after 6 month of storage their size did not change significantly and the amount of the EOs decreased 25%, approximately. Furthermore, during this period, no chemical derivates were observed. The EOs nanoparticles produced a notable increase of the residual contact toxicity apparently due to the slow and persistent release of the active terpenes. In addition, the nanoformulation enhanced the EO contact toxicity and altered the nutritional physiology of both stored product pest. The results indicated that these novel systems could be used in integrated pest management program for T. castaneum and R. dominica control.
authors.affiliation: FIA Laboratory, Analytical Chemistry Section, INQUISUR-CONICET, Universidad Nacional del Sur, Av. Alem 1253, B8000CPB Bahía Blanca, Buenos Aires, Argentina; Laboratorio de Zoología de Invertebrados II, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, B8000CPB Bahía Blanca, Buenos Aires, Argentina. Electronic address: jwerdin@hotmail.com.
authors.forename: Jorge Omar
authors.initials: JO
authors.lastname: Werdin González
authors.affiliation: Laboratorio de Zoología de Invertebrados II, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, B8000CPB Bahía Blanca, Buenos Aires, Argentina.
authors.forename: María Mercedes
authors.initials: MM
authors.lastname: Gutiérrez
authors.affiliation: Laboratorio de Zoología de Invertebrados II, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, B8000CPB Bahía Blanca, Buenos Aires, Argentina.
authors.forename: Adriana Alicia
authors.initials: AA
authors.lastname: Ferrero
authors.affiliation: FIA Laboratory, Analytical Chemistry Section, INQUISUR-CONICET, Universidad Nacional del Sur, Av. Alem 1253, B8000CPB Bahía Blanca, Buenos Aires, Argentina.
authors.forename: Beatriz
authors.initials: B
authors.lastname: Fernández Band
mesh_terms: D000818:Animals; D002626:Chemistry, Pharmaceutical; D061353:Food Storage; D007300:Insect Control / Q000379:methods*; D007306:Insecticides / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D009822:Oils, Volatile / Q000737:chemistry*; D013329:Structure-Activity Relationship; D013729:Terpenes / Q000032:analysis / Q000737:chemistry; D014231:Tribolium
chemical_list: D007306:Insecticides; D009822:Oils, Volatile; D013729:Terpenes
keywords: Geranium and bergamot essential oils; Nanoparticles; Nutritional physiology; Release profiles; Residual contact toxicity