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Molecules 2011, 16(7), 6060-6067; doi:10.3390/molecules16076060
Article

Antifeedant Diterpenoids against Tribolium castaneum from the Stems and Twigs of Ceriops tagal (Rhizophoraceae)

1,* , 1, 2, 1, 3, 3,*  and 2
Received: 23 June 2011 / Revised: 15 July 2011 / Accepted: 18 July 2011 / Published: 20 July 2011
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Abstract

The screening of several Chinese mangrove plants for insecticidal principles showed that ethanol extract of Ceriops tagal stems and twigs possessed significant feeding deterrent activity against the red flour beetle, Tribolium castaneum (Family: Rhizophoraceae). From the ethanol extract, three feeding deterrent diterpenoids were isolated by bioassay-guided fractionation. The compounds were identified as tagalsin A, B, and H on the basis of their phytochemical and spectral data. Tagalsin A, B, and H exhibited strong feeding deterrent activity against T. castaneum adults with EC50 values of 375.3 ppm, 277.3 ppm, and 285.45 ppm, respectively.
Keywords: feeding deterrents; Ceriops tagal; Tribolium castaneum; tagalsin feeding deterrents; Ceriops tagal; Tribolium castaneum; tagalsin
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Du, S.S.; Wang, C.F.; Li, J.; Zhang, H.M.; Liu, Q.Z.; Liu, Z.L.; Deng, Z.W. Antifeedant Diterpenoids against Tribolium castaneum from the Stems and Twigs of Ceriops tagal (Rhizophoraceae). Molecules 2011, 16, 6060-6067.

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