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The effect of boiling on the removal of persistent malathion residues from stored grains
(University of Nairobi, 2002)
This study aimed at finding the fate of malathion in maize grains and beans stored in a tropical laboratory for 12 months at temperatures of 20–24°C, relative humidity of 42–80% and grain moisture contents of 11.7–12.5% ...
Activity of 6-Pentadecylsalicylic Acid from Ozoroa insignis Against Marine Crustaceans
(University of Nairobi, 2002)
Bioassay-guided fractionation of the dichloromethane extract from twigs of Ozoroa insignis using Artemia salina larvae as a model led to the isolation of 6-pentadecylsalicylic acid as the active principle. This is the first ...
A Benzochromene from the Roots of Pentas Bussei
(University of Nairobi, 2002)
A new homoprenylated benzochromene, methyl-5,10-dihydroxy-7-methoxy-3-methyl-3-[4-methyl-3-pentenyl]-3H-benzo[f]chromene-9-carboxylate (1), was isolated from the roots of Pentas bussei, collected from Kenya. The structure ...
Neurotrophic And Antileukemic Daphnane Diterpenoids From Synaptolepis Kirkii
(University of Nairobi, 2002-10)
Biological assay guided fractionation of a dichloromethane extract of Synaptolepis kirkii led to the isolation of four new and five known daphnane-type diterpene orthoesters, whose structure was established by spectroscopic ...
Chemical Constituents And Biological Activities Of Zanthoxylum Usambarense
(University of Nairobi, 2002-02)
Bioassay-guided fractionation of the dichloromethane extracts of the roots and the bark of Zanthoxylum usambarense led to the isolation of two physiologically active compounds, i.e. canthin-6-one 1 (fungicide) and pellitorine ...
Soil Quality and Standards. In Public Education and Awareness of Regulations and Standards of the Environmental .
(University of Nairobi, 2002)
Abstract Not Available