Worms are becoming difficult pests to control since many insecticides are now forbidden and the present alternatives are insufficiently effective. Antifeedants of plant origin may have potential against such pests. In this work, several diterpenoids, flavones and coumarins extracted from plants were assayed as antifeedant agents against Spodoptera littoralis larvae. Among these compounds, four ...

Aromadendranes belong to a class of sesquiterpenes present in higher plant essential oils and marine animals. Although the biological activities include antifungal, antibacterial, antiviral, plant growth regulatory, antifeedant, repellent and cytotoxic, there is only one precedent for spasmolytic effects. In a previous report we have shown that the aromadendrene molecule known as spathulenol, i...

Flavones possessing prenyl substituents occur quite frequently in nature, so do those with 2 ,2 -dimethylpyran ring system [1,2]. Many of such py­ ranoflavones exhibit interesting biological activi­ ties. A health food, designed to prevent diseases, consisted of extracts of M orbus bombycis or relat­ ed plants (containing morusin (1 ) and/or its hy­ drate) [3]. Isopongaflavone (2) otherwise kno...

control of stored-product insect by gamma radiation could be enhanced by other possible techniques such as essential oils as effective alternatives to chemical insecticides. in this study, the efficiency of gamma radiation combined with perovskia atriplicifolia (benth) was verified to assess their enhanced antifeedant effect against the tribolium castaneum (herbst). flour disc bioassay was empl...