Results 251 to 260 of about 111,895 (309)

Genomic analysis reveals the emergence of molecular insecticide resistance in the malaria vector, Anopheles gambiae, from Western Ethiopia

Gemechu F, Bennett KL, Dugassa S, Hernandez-Koutoucheva A, Eukubay A, Miles A, Abera D, Clarkson CS, Golassa L.   +8 more
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Sigillins from Springtails Are Potent Natural Insecticides

Journal of Natural Products, 2020
Sigillins are highly chlorinated natural products from the springtail Ceratophysella sigillata (Collembola) that are used to deter arthropod predators. We report here the isolation and structure elucidation of sigillin F, a hydrogenated benzopyranone compound bearing two trichloromethyl groups, and the synthesis of trideoxysigillin (8), a non-natural ...
Michael Steinbiss, Michael Maczka, Juergen Langewald, Brecht London, Ramakrishnan Vallinayagam, Peter G. Jones, Harold Bastiaans, Stefan Schulz   +7 more
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Risks From Natural Versus Synthetic Insecticides

Annual Review of Entomology, 1994
For centuries humans have used natural insecticides to combat insect pests that compete for our food and fiber or that affect public health. Some of these compounds were plant extracts or plant parts, others were mined from the earth. In the twentieth century synthetic insecticides have replaced natural ones as the standard means of controlling ...
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Natural Insecticide Pyrethroids Project

2010
Word “Natural” is very popular today. Every advertisement tries to use it to attract consumers. The average consumer misguided by wording, thinking that it is safe, starts using the insecticides inaccurately as in the example of Amber Nickol published in “‘Safe’ Insecticides Now First in Poisoning” article by M. B. Pell and Jim Morris.
Kirichenko, Elmira, Kuravsky, Diana, Truong, Andrew, Fagan, Julie M.   +3 more
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Limonene - A natural insecticide

Journal of Chemical Education, 1986
Secondary students are often eager to pursue independent research projects but it may be a challenge to find an appropriate one. This author shares ideas for such a project with readers.
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An Insecticide Stabilized by Natural Zeolite

Journal of Thermal Analysis and Calorimetry, 1998
The synthetic pyrethroide insecticide (R, S)-α-cyano-3-phenoxybenzyl-IR, S-cis,trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanocarboxylate in solid form could be enclosed in and therefore stabilized by natural clinoptilolitic zeolite. The resulting host-guest complex exhibited characteristics different from those of the starting compounds and also ...
A. Sopková, E. Janoková
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Insecticidal organophosphates: Nature made them first

Experientia, 1987
Out of the three most important classes of synthetic insecticides only the carbamates and pyrethroids were known to have ancestors in nature. Now two organophosphates (which are quite good insecticides and very potent acetylcholinesterase inhibitors, e.g. comparable to carbofuran) have been isolated fromStreptomyces antibioticus strain DSM 1951.
R. Neumann, H. H. Peter
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Recovery of natural insecticides fromTephrosia vogelii.

Economic Botany, 1966
Bioassays, using guppies as a test animal, were conducted onTephrosia leaf extracts of seven plants obtained by four different extraction methods. The total rotenoids recovered by acetone extraction of fresh leaves appeared to have slightly more effective piscicidal properties than rotenoids recovered by acetone extraction of oven-dried leaves.
Donald K. Barnes, Ruben H. Freyre
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