Feeding Deterrents against Two Grain Storage Insects from Euphorbia fischeriana

Molecules

Zhu Feng Geng¹  Zhi Long Liu¹  Cheng Fang Wang¹  Qi Zhi Liu¹  Sheng Min Shen¹  Zi Mu Liu¹  Shu Shan Du¹ 

[1] ¹Analytical and Testing Center, Beijing Normal University, Beijing 100875, China ²Department of Entomology, China Agricultural University, Haidian District, Beijing 100094, China ³Protection and Utilization of Traditional Chinese Medicine of Beijing Area Major Laboratory, Beijing Normal University, Haidian District, Beijing 100875, China

关键词: feeding deterrents;    Euphorbia fischeriana;    Tribolium castaneum;    Sitophilus zeamais;   

DOI  :  10.3390/molecules16010466

来源: mdpi

【 摘 要 】

The screening of several Chinese medicinal herbs for insecticidal principles showed that Euphorbia fischeriana roots possessed significant feeding deterrent activity against two stored-product insects (Tribolium castaneum and Sitophilus zeamais). From ethanol extract, four feeding deterrents were isolated by bioassay-guided fractionation. The compounds were identified as jolkinolide B, 12-deoxyphorbol 13-(9Z)-octadecenoate 20-acetate, 17-hydroxyjolkinolide A and B on the basis of their phytochemical and spectral data. Jolkinolide B and 17-hydroxyjolkinolide B possessed strong feeding deterrent activities against S. zeamais (EC₅₀ = 342.1 and 543.9 ppm, respectively) and T. castaneum adults (EC₅₀ = 361.4 and 551.5 ppm, respectively). 17-Hydroxyjolkinolide A and 12-deoxyphorbol 13-(9Z)-octadecenoate 20-acetate A also exhibited feeding deterrent activity against the two grain storage insects with EC₅₀ values of 631.9 and 884.3 ppm for S. zeamais and 656.5 and 1058.4 ppm for T. castaneum adults.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.