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Evaluation of some plant extracts in different formulas of ecofriendly chitosan-based composites against culexpipiens and muscadomestica larvae

Author:

Omnia, M. H. M. Kamel, Nadia H. Elsayed, Saleh O. S. Bahaffi and Magdy Y. Abdelaal

Subject Area:

Physical Sciences and Engineering

Abstract:

Achilleafragrantissima and Cleome droserifolia crude extracts were blended with suitable eco-friendly polymeric materials (Chitosan, starch, glycerol and glutaraldehyde). Theseformulas have been characterized and their insecticidal activity was evaluated against Culexpipiens and Muscadomesticalarvae.The series of concentrations from Chitosan and starch were mixed with glycerol and glutaralehyde for producing M1 and M2 respectively. The potency of each extract was decreased while decreasing the chitosan material. The formula which containing glutaralehyde showed more potency than the formula contained glycerol. The temporal effect of mixtures number 4 and 5 revealed that the effect of mixtures continues for more than 15 days against Culexpipiens while their effect is almost stopped after 6 days in case of Muscadomestica. Also, the formula which contained the glutaraldehyde was more persistent during application than the other formula.

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