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Browsing School of Science and Computing (JA) by Subject "Tea"

Now showing items 1-15 of 15

Antioxidant activity and effects of Kenyan Tea (Camellia sinensis) on the liver function and serum biochemistry in male Wistar rats

Areba, Gerald O.; Khalid, Rashid; Nyaga, Samuel N.; Thuo, Jesse K.; Moseti, Kevin O.; Karori, Stephen M.; Wachira, Francis N.; Ngure, Raphael M. (Medip Academy, 2018-07)

Background: Tea is a beverage that is most widely consumed worldwide. Studies have shown that oral consumption of tea has health benefits however, there is paucity of data in Kenya detailing the biochemical effects of ...
Biochemical differentiation in Camellia sinensis and its wild relatives as revealed by isozyme and catechin patterns

Wachira, Francis N.; Magoma, G. N.; Imbuga, M. O.; Agong, S. G. (Elsevier, 2003-09)

The variation in three NADP-linked dehydrogenase enzymes; glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase and shikimate dehydrogenase as well as alpha and beta esterases was determined in 24 cultivars ...
Characterization of anthocyanins in Kenyan teas: Extraction and identification

Wachira, Francis N.; Kerio, L. C.; Wanyoko, J. K.; Rotich, M. K. (Elsevier, 2012-03)

Characterization and quantification of anthocyanins in selected tea cultivars processed into black (aerated) and green (unaerated) tea products was carried out in this study. The anthocyanins were extracted from tea products ...
Different types of tea products attenuate inflammation induced in Trypanosoma brucei infected mice

Wachira, Francis N.; Karori, S. M.; Ngure, R. M.; Wanyoko, J. K.; Mwangi, J. N. (Elsevier, 2008-09)

An in vivo study was carried out to determine the effect of different types of Kenyan tea extracts on male Swiss albino mice infected with Trypanosoma brucei brucei isolate KETRI 2710. The isolate produced a similar clinical ...
Effect of Seasons on Theanine Levels in Different Kenyan Commercially Released Tea Cultivars and Its Variation in Different Parts of the Tea Shoot

Wachira, Francis N.; Janet, Too C.; John, Wanyoko K.; Thomas, Kinyanjui; Kelvin, Moseti O. (Scientific Research Publishing, 2015-11)

A study was conducted to determine the effect of seasons in 23 different Kenyan commercially released tea cultivars. This was done for three seasons viz: cold and wet, cold and humid, hot and dry. The cold and wet season ...
Effects of Foliar Fertilizer Application on Quality of Tea (Camellia sinensis) Grown in the Kenyan Highlands

Wachira, Francis N.; Njogu, Rachael N.; Kariuki, David K.; Kamau, David M. (Scientific Research Publishing, 2014)

In Kenya, foliar fertilizers have not found use in tea production despite their numerous advantages as exhibited in other crops. A fertilizer trial test was established in three sites of the major tea growing regions, with ...
The fortification of tea with sweeteners and milk and its effect on in vitro antioxidant potential of tea product and glutathione levels in an animal model

Wachira, Francis N.; Korir, M. W.; Wanyoko, J. K.; Ngure, R. M.; Khalid, R. (Elsevier, 2014-02)

Several studies have demonstrated that tea flavonoids protect cells and tissues against free radicals which have been implicated in the etiology of oxidative stress-related disease disorders. However, black tea is commonly ...
Genomic mapping and testing for quantitative trait loci in tea ( Camellia sinensis (L.) O. Kuntz

Wachira, Francis N.; Kamunya, S. M.; Pathak, R. S.; Korir, R.; Sharma, V.; Kumar, R.; Bhardwaj, P.; Chalo, R.; Ahuja, P. S.; Sharma, R. K. (Springer Verlag, 2010)

The tea industry is significant in the economies of tea-growing countries. Prospects of improving yield of made tea genomic information were explored using clones from a cross between clones TRFCA SFS150 and AHP S15/10. ...
Influence of Nitrogen Fertilisation on Red Spider Mites (Oligonychus coffeae Nietner) and Overhead Volatile Organic Compounds in Tea (Camellia sinensis)

Odak, Jenipher A.; Owuor, P. Okinda; Mang’uro, Lawrence O. A.; Wachira, Francis N.; Cheramgoi, Evelyne (2017-09)

Nitrogen fertilisation influences tea yields, quality and pests infestation levels. Red spider mites reduce tea production in western Kenya during prolonged droughts. Nitrogen fertiliser use maybe an agronomic ...
Neuroprotective Effects of Tea Against Cadmium Toxicity

Karori, S. M.; Areba, G. O.; Ngure, R. M.; Khalid, R.; Maloba, F.; Nyaga, N.; Moseti, K. O.; Ngotho, M.; Wanyoko, J. K.; Wachira, Francis N. (2019)

Background: Cadmium (Cd) is a common pollutant and potential neuro-toxicant to humans. The main treatment for heavy metal toxicity is chelation therapy which is however replete with grave side effects. This study was ...
Quantitative Estimation of γ-Glutamylethylamide in Commercially Available Made Teas [Camellia sinensis (L.) O. Kuntze, Theaceae] in Kenya

Wachira, Francis N.; Too, Janet; Wanyoko, John; Kinyanjui, Thomas; Moseti, Kelvin (Scientific Research Publishing, 2016-01)

A study was carried out to quantitatively estimate the L-theanine content in 19 teas commercially available in the Kenyan market by High Performance Liquid Chromatography (HPLC). The test tea samples analyzed were green ...
Quantitative genetic parameters in tea ( Camellia sinensis (L.) O. Kuntze): I. combining abilities for yield, drought tolerance and quality traits

Wachira, Francis N.; Kamunya, S. M.; Pathak, R. S.; Muoki, R. C.; Wanyoko, J. K.; Ronno, W. K.; Sharma, R. K. (Academic Journals, 2009-05)

The combining abilities for yield, drought tolerance and quality related traits in Camellia sinensis were estimated using a 4 x 4 full diallel mating design. There was significant phenotypic variation for the nine ...
Relationship between tea ( camellia sinensis) leaf uptake of major nutrients, nitrogen, phosphorous and potassium (NPK ) and leaf anatomy of different varieties grown in the Kenyan highlands

Wachira, Francis N.; Njogu, Rachael N.; Kariuki, David K.; Kamau, David M. (2014-08)

Uptake of major nutrients (NPK) through the leaf studies were carried out on three varieties of tea grown in the Kenyan Highlands. A foliar fertilizers trial was setup in three sites comprising of 36 plots per site in the ...
Screening of Kenyan tea clones for susceptibility to mite attack at different ecological zones

Sudoi, Vincent; Cheramgoi, Evelyne; Langat, Joel K.; Kamunya, Samson M.; Wachira, Francis N. (2011-06-26)

Tea growers in Kenya are faced with a number of challenges; the major one being mite attack. It is therefore necessary to continuously breed and screen tea varieties that are not only high yielding but tolerant to mite ...
Total polyphenols, catechin profiles and antioxidant activity of tea products from purple leaf coloured tea cultivars

Wachira, Francis N.; Kerio, L. C.; Wanyoko, J. K.; Rotich, M. K. (Elsevier, 2013-02)

Black (aerated) and green (unaerated) tea products, processed from 10 green and 18 purple leaf coloured cultivars of Kenyan origin, and two tea products, from the Japanese cultivars, Yabukita and Yutakamidori, were assayed ...

Browsing School of Science and Computing (JA) by Subject "Tea"

Browsing School of Science and Computing (JA) by Subject "Tea"

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