Insecticidal and antifungal effects of lemon, orange, and grapefruit peel essential oils from Argentina

The aim of the present work was to study bioactivity lemon, orange, and grapefruit peel essential oils (EOs) obtained from Argentinian plantations on different agronomically important insect fungal species. chemical profile EOs determined by Gas Chromatography-Mass Spectrometry (GC/MS); insecticidal activity studied through contact fumigant assays; antifungal evaluated with tests. Orange EO most effective against Rhyzopertha dominica, Oryzaephilus spp. Sitophilus granarius in fumigation tests (LC50= 89.39, 94.50, 163.64 µL/L air, respectively); while effect species-dependent toxicity assays. Regarding activity, Rhizoctonia solanii more susceptible than Sclerotium rolfsii tested EOs, lemon Industry 1 orange being toxic (MIC=10.77 µL/plate 11.02 µL/plate, respectively). Conversely, S. strongly inhibited 2 (MIC= 52.40 µL/plate). Besides limonene, other compounds that could be responsible for these bioactivities were: linalool, carvone, ?-pinene, ?-pinene, ?-myrcene, ?-terpineol, terpinen-4-ol, limonene oxide, ?-phellandrene, ?-terpinene, sabinene, neral, neryl acetate, ?-caryophyllene p-cymene. Citrus can used pests, contributing valorization citrus residues.