Browsing School of Pure, Applied and Health Sciences (JA) by Author "Ateka, E.M."
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7a-Acetylugandensolide and antimicrobial properties of Warburgia ugandensis extracts and isolates against sweet potato pathogens
Opiyo, Sylvia A.; Manguro, Lawrence O.A.; Okinda-Owuor, Philip; Ateka, E.M.; Lemmen, Peter (Elsevier, 2011)7a-Acetylugandensolide together with thirteen known drimane-type sesquiterpenes have been isolated from Warbugia ugandensis bark extracts. Their structures were established by spectroscopic and physical methods as well as ... -
Antimicrobial Compounds from Terminalia brownii against Sweet Potato Pathogens
Opiyo, Sylvia A.; Manguro, Lawrence O.A.; Owuor, Philip O.; Ochieng, Charles O.; Ateka, E.M.; Lemmen, Peter (Bentham Science Publishers, 2011)Phytochemical evaluation of Terminalia brownii extracts led to the isolation of five compounds namely - sitosterol, stigmasterol, monogynol A, betulinic acid and arjungenin. Their structures were established by spectroscopic ... -
Development of a multiplex PCR technique for simultaneous detection of sweet potato feathery mottle virus and sweet potato chlorotic stunt virus
Opiyo, Sylvia A.; Ateka, E.M.; Owuor, P.O.; Manguro, L.O.A.; Miano, D.W. (Edizioni ETS Pisa, 2010)Virus diseases, especially those caused by mixed infections, are among the economically most devastating diseases of sweet potato. Sweet potato virus disease (SPVD), which is caused by mixed infection of Sweet potato ... -
Survey of sweet potato viruses in Western Kenya and detection of cucumber mosaic virus
Opiyo, Sylvia A.; Ateka, E.M.; Owuor, P.O.; Manguro, L.O.A.; Karuri, H.W. (Journal of Plant Pathology, 2010)Sweet potato is an important food crop worldwide, but several pests and diseases limit its production. In eastern Africa, virus-induced diseases rank second to weevils in causing yield reduction. Symptomatic sweet potato ... -
Triterpenes from Elaeodendron schweinfurthianum and their Antimicrobial Activities against Crop Pathogens
Opiyo, Sylvia A.; Manguro, Lawrence O.A.; Owuor, Philip O.; Ateka, E.M. (Scientific & Academic Publishing, 2017)Phytochemical evaluation of Elaeodendron schweinfurthianum (Loes) extracts led to the isolation of nine compounds which were identified as 3-oxofriedelane (1), 3α-hydroxyfriedelane (2), 3-oxo-29-hydroxyfriedelane (3), ...