Chemical composition and insecticidal activity of essential oils from cultivated and native aromatic plants of Argentina against Carpophilus dimidiatus (Fabricius) (Nitidulidae) and Oryzaephilus mercator (L.) (Silvanidae)

DENETT, GABRIEL O.; COMELLI, NIEVES C.; RODRIGUEZ, MARIA R.; GOMEZ, A. DE LOS ANGELES; SAMPIETRO, DIEGO A.

NATURAL PRODUCT RESEARCH

TAYLOR & FRANCIS LTD

Lugar: Londres; Año: 2022

1478-6419

Essential oils from aerial parts of six aromatic plants were analysed by GC-MS. The major compounds identified were -terpinene (11.48±0.25%), cuminaldehyde (26.57±0.24%) and -terpinen-7-al (40.61±0.34%) in Cuminum cyminum, trans-anethol (95.2±0.26%) in Pimpinella anisum, α-pinene (11.60±0.20%), limonene (21.00±0.32%), β-caryophyllene (22.32±0.25%) and α-humulene (16.71±0.20%) in Lippia integrifolia, limonene (40.84±0.28%) and artemisia ketone (19.34±0.32%) in Lippia junelliana,trans--ocimene (15.55±0.16%), 4-ethyl-4-methyl-1-hexene (24.52±0.16%),trans-tagetone (20.47±0.23%) and verbenone (27.22±0.36%) in Tagetes minuta, 1,8-cineole (17.98±0.25%),elixene (10.29±0.16%) and spathulenol (13.78±0.13%) in Aloysia gratissima. Oils with strong insecticidal activity on Carpophilus dimidiatus and Oryzaephilus mercator were from P. anisum (LC50 = 4 µl/L; LC100 = 10 µl/L) and T. minuta (LC50=10.19-12.57 µl/L; LC100=20 µl/L). Scents of C. cyminum and L. junelliana were strong insecticides on O. mercator (LC50=7.02-7.17 µl/L; LC100=10.00-20.00 µl/L). The insecticidal activity was associated to the whole content of C10 molecules and oxygenated constituents. The P. anisum oil is promising as protective agent of nut products.