Insecticidal hydrogenated neem extracts

Hydrogenated crude extract of seeds of the neem tree Azadirachta indica which is obtained by hydrogenating an insecticidal extract of the seeds.

An insecticidal crude extract of neem seed containing azadirachtin which is hydrogenated until substantially all of the azadirachtin in the extract has been converted to dihydroazadirachtin or tetrahydroazadirachtin.

An insecticidal hydrogenated crude neem seed extract produced by extracting seeds of the neem tree with a polar solvent to obtain an extract and hydrogenating said extract.

An insecticidal hydrogenated crude neem seed extract produced by grinding neem seed to a particle size of from about 0.1 to about 10 mm in particle diameter, extracting the particles with a polar solvent to obtain a neem seed extract, and hydrogenating the neem seed extract at from about 1 to about 60 atmospheres of hydrogen at from about 10.degree. C. to about 50.degree. C.

Hydrogenated crude extract of the neem tree Azadirachta indica which is obtained by hydrogenating an azadirachtin-containing extract of the neem tree.

Hydrogenated crude extract from a plant which is obtained by hydrogenating an azadirachtin-containing extract from a plant.