Browsing by Author "Owuor, P Okinda"
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Antinociceptive and antiplasmodial activities of cassane furanoditerpenes from Caesalpinia volkensii H. root bark
Ochieng, Charles O; Mang'uro, Lawrence AO; Owuor, P Okinda; Akala, Hosea; Ishola, Ismail O (Elsevier, 2012-01-01)The chloroform and ethyl acetate extract (100mg/kg) of Caesalpinia volkensii H. exhibited significant (P≤ 0.05) antinociceptive activities using hot plate and writhing tests in mice while the later showed antiplasmodial ... -
Availability of Some Inorganic Micronutrients and Effects of Grading on Their Levels in East African Black Teas and Their Infusions
Omwoyo, WN; Owuor, P Okinda; Ongeri, DM; Kamau, DM; Kwach, B.O; Munyao, PM; Otieno, MO (2013) -
Changes in thearubigin fractions and theaflavin levels due to variations in processing conditions and their influence on black tea liquor brightness and total colour
Obanda; Owuor, P Okinda; Mang’oka, Richard; Kavoi, Mutuku M (Elsevier, 2004-03-30)Increase in coarser plucking standards significantly (P< 0.05) depressed levels of theaflavin (TF; μmol/g), total colour and brightness (spectrophotometer) of black tea. But total thearubigins (TR) TRSI, TRSII and ... -
Clonal plain black tea quality parameters responses of hard physical withered leaf to rehydration and fermentation durations
Owuor, P Okinda; Obanda, Martin (2016-04-16)Hard physical withers in tea processing result in reduced plain black tea quality parameters, but improve flavoury black tea quality. Chemical withers with minimal moisture loss improve plain black tea quality parameters. ... -
Effects of nitrogenous fertilizer rates, plucking intervals and location of production on the micronutrient levels of clonal black tea.
Omwoyo, W Nyaigoti; Owuor, P Okinda; Ongeri, David M; Kamau, David M (International Society of Tea Science, 2014)Micronutrients are important to both animal and plant life. In plants, the levels can vary widely due to biotic and abiotic factors. Tea is widely grown and its beverages are claimed to be the most widely consumed ... -
Flavanol composition and caffeine content of green leaf as quality potential indicators of Kenyan black teas
Obanda, Martin; Owuor, P Okinda; Taylor, Sarah J (1997)The Ñavanol composition and ca† eine content of green tea leaf, black tea quality parameters of theaÑavins, thearubigins, liquor brightness and total colour varied more among clones than with time of the year. In green ... -
Influence of region of production on relative clonal plain tea quality parameters in Kenya
Owuor, P Okinda; Wachira, Francis N; Ng’etich, Wilson K (Elsevier, 2010-04-01)Tea is grown in diverse regions with varying climates. Growers seek high-yielding and superior quality cultivars to improve profitability of the enterprise. A superior quality genotype in one location is assumed to ...