Now showing items 1-10 of 402
Pedonin, a spiro tetranortriterpenoid insect antifeedant from Harrisonia abyssinica
A novel ring-D cleaved spiro tetranortriterpenoid insect antifeedant, pedonin, has been isolated from the roots of Harrisonia abyssinica. Pedonin was studied spectroscopically and its structure determined by X-ray analysis.
Frequency of antimicrobial resistance and plasmid profiles of Bacillus cereus strains isolated from milk.
(Kenya Medical Association, 1996)
Plasmid profile analysis and susceptibility to eight commonly used antimicrobial agents was done on sixty Bacillus cereus (B. cereus) strains isolated from milk. About seventy two percent (71.7%) of the isolates contained ...
Constituents of the essential oil of blumea brevipes (oliv. & hiern) willd
(John Wiley & Sons, Ltd, 1994)
The composition of the essential oil of Blumea brevipes (Oliv. & Hiern) Willd. isolated by hydrodistillation was analysed by GC and GC-MS. Sixty-eight compounds constituting about 94% of the oil were identified. The main ...
The Structure and Synthesis of Barakol: a Novel Dioxaphenalene Derivative from Cassia siamea
(Royal Society of Chemistry, 1970)
Barakol, from the leaves of Cassia siamea, is shown to be a novel dioxaphenalene derivative. A synthesis from 3,5-dihydroxyphenylacetic acid is described.
Susceptibility of Helicobacter pylori and Candida spp. to the east African plant Terminalia spinosa.
Trees of the genus Terminalia have long been used in the traditional medicine of Kenya (East Africa). In an ethnopharmacological approach, extracts of the stem bark of Terminalia spinosa were investigated for antibacterial ...
Activity of East African Medicinal Plants against Helicobacter pylori
The activity of extracts from the East African medicinal plants Entada abyssinica (stem bark), Terminalia spinosa (young branches), Harrisonia abyssinica (roots), Ximenia caffra (roots), Azadirachta indica (leaves and stem ...
Aggregation pheromone complex of the desert locust, Schistocerca Gregaria (Forskal) (Orthoptera: Acrididae): Current Status
(Council for Scientific and Industrial Research of Ghana / Ghana Science Association, 1998)
The most striking feature of the desert locust, Schistocerca gregaria (Forskal), is its ability to reversibly transform between two morphologically, physiologically and behaviourlly distinct phases: solitaria and gregaria. ...
Antiparasitic compounds from East African plants: Isolation and biological activity of anonaine, matricarianol, canthin-6-one and caryophyllene oxide
(The International Centre of Insect Physiology and Ecology (ICIPE), 1993)
Five natural compounds possessing antiparasitic activity were isolated from East African plants and tested, together with some semisynthetic derivatives, against micro-organisms and arthropods of agricultural interest. ...
The 7,7″-β-diglucoside of (2S,3R)-chamaejasmin from Ormocarpum kirkii.
In African traditional medicine, the ash of O. kirkii is used for allergic diseases and to reduce oedemas, the roots are used for rheumatism and stomach troubles, and the crushed leaves are used for headache. From the root ...
Limonoids from Turraea floribunda
Extracts of the root bark of Turraea floribunda have yielded four new limonoids of the havanensin class: 28-nor-4-alpha-carbomethoxy-11-beta-acetoxy-12-alpha-(2-methylbutanoyloxy)-14,15-deoxyhavanensin-1,7-diacetate; ...