Chitosan (CS)-g-poly (acrylic acid) (PAA) nanoparticles, which are well dispersed and stable in aqueous solution have been prepared by template polymerization of acrylic acid in chitosan solution. The prepared CS-PAA had a white powder shape and was insoluble in water and diluted acid. The mean particles size were found to be around 50nm. FTIR spectra of CS-PAA nanoparticles for CS, the intensi...

Plant secondary metabolites play an important role in plant-insect interactions and therefore such compounds may have insecticidal or biological activity against insects. Fumigant toxicity of essential oils of leaves and fruits from oriental arborvitae (Platycladus orientalis [L.] Franco) (Cupressaceae) was investigated against adults of cowpea weevil (Callosobruchus maculatus Fab.), rice weevi...

the effects of clerodendrum capitatum (willd.) and phyllanthus fraternus (webster) powders were evaluatedin reducing callosobruchus maculatus (f.) and sitophilus zeamais (l.) adult emergence and cowpea and maize seed damage under laboratory conditions. the dried and powdered plant leaves were tested against the virgin weevils by exposing ten unsexed adults to concentration levels of 0, 500, 100...

Griffonia simplicifolia 11, an N-acetylglucosamine-specific legume lectin, has insecticidal activity when fed to the cowpea weevil, Callosobruchus maculatus (F.). A cDNA clone encoding G. simplicifolia II was isolated from a leaf cDNA library, sequenced, and expressed in a bacterial expression system. The recombinant protein exhibited Kacetylglucosamine-binding and insecticidal activity against...

Chemical composition of the essential oil from Thymus carmanicus Jalas, and its fumigant activity was investigated against two stored product insects, Callosobruchus maculatus (F.) and Sitophilus granarius (L.). Essential oil was isolated via hydrodistillation from dry leaves of T. carmanicus using a modified Clevenger-type apparatus and the chemical composition of the oil was assessed via GC a...