Composition and insecticidal activity of the essential oil of Croton grewioides Baill. against Mexican bean weevil (Zabrotes subfasciatus Boheman)

Composition and insecticidal activity of the essential oil of Croton grewioides Baill. against Mexican bean weevil (Zabrotes subfasciatus Boheman)

The essential oils of leaves and stems of Croton grewioides Baill. of the "agreste" region of Pernambuco, Brazil, were obtained by hydrodistillation and analyzed by GC and GC/MS. Twenty-two components were identified, which represented 99.8% and 98.6% of the total constituents in the leaf...

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Bibliographic Details
Published in:The Journal of essential oil research Vol. 20; no. 2; pp. 179 - 182
Main Authors: Silva, C.G.V, Zago, H.B, Junior, H.J.G.S, Camara, C.A.G. da, Oliveira, J.V. de, Barros, R, Schwartz, M.O.E, Lucena, M.F.A
Format: Journal Article
Language:English
Published: Taylor & Francis Group 01-03-2008
Subjects:
(E)-anethole
(E)-methyl isoeugenol
aqueous solutions
botanical insecticides
cadalene
chemical composition
Croton
Croton grewioides
distillation
essential oil composition
essential oils
Euphorbiaceae
extraction
gas chromatography
insecticidal activity
leaves
methyl eugenol
phenylpropanoids
plant extracts
stems
Zabrotes subfasciatus
Brazil
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Summary:The essential oils of leaves and stems of Croton grewioides Baill. of the "agreste" region of Pernambuco, Brazil, were obtained by hydrodistillation and analyzed by GC and GC/MS. Twenty-two components were identified, which represented 99.8% and 98.6% of the total constituents in the leaf and stem oil, respectively. Croton grewioides produced an oil with a predominance of phenylpropanoid compounds, whose principal component was (E)-anethole (65.5% in the leaf and 47.8% in the stem). Other major components found in the leaf oil were methyl eugenol (10.6%) and (E)-methyl isoeugenol (4.7%). Other components identified in the stem oil were (E)-methyl isoeugenol (30.0%), cadalene (8.4%) and methyl eugenol (4.6%). The insecticidal activity of C. grewioides was evaluated against Mexican bean weevils, Zabrotes subfaciatus (Boheman) resulting in a LC50 for the leaf oil, which was 3.4 times less than that obtained from the stem oil.
ISSN:1041-2905
2163-8152
DOI:10.1080/10412905.2008.9699985