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BIBTEX RIS

Larvicidal and Nematicidal Activities of the Leaf Essential Oil of Croton regelianus

2008; Wiley; Volume: 5; Issue: 12 Linguagem: Inglês

10.1002/cbdv.200890227

1612-1880

Maria Conceição M. Torres, João Carlos da Costa Assunção, Gilvandete M. P. Santiago, Manoel Andrade‐Neto, Edilberto R. Silveira, Letícia V. Costa‐Lotufo, Daniel P. Bezerra, José Delano Barreto Marinho Filho, Francisco Arnaldo Viana, Otília Deusdênia Loiola Pessoa,

Bioactive Natural Diterpenoids Research

Abstract The chemical composition of the leaf essential oil of Croton regelianus collected from wild plants growing in two different sites at Ceará State (Brazil) was analyzed by GC/MS and GC‐FID. Twenty monoterpenoids, representing more than 96% of the chemical composition of the oils, were identified and quantified. The oils showed similar chemical composition but considerable variation in the levels of each constituent. Ascaridole (33.9–17.0%), p ‐cymene (22.3–21.6%), and camphor (13.0–3.1%) were the predominant constituents. The monoterpene ascaridole was isolated and characterized by spectroscopic data. The essential oils and the isolated compounds were tested against Aedes aegypti and Artemia sp. larvae, and the root knot nematode Meloidogyne incognita. The bioassay results show that the essential oil of C. regelianus and ascaridole were moderately active against the M. incognita , but strongly effective against both A. aegypti and Artemia sp. larvae.