Extraction and Quantification of Total Polyphenol Content in Different Parts of Selected Tea Cultivars (Articles)

Simon Oduor Ochanda, Abdul Kiptoo Faraj, John Kanyiri Wanyoko, Christine Akoth Onyango, Henrik Kipngeno Ruto

American Journal of Plant Sciences Vol.6 No.9，June 29, 2015

DOI: 10.4236/ajps.2015.69158   3,321 Downloads  4,303 Views  Citations

Influence of Geographical Regions on Catechin and Caffeine Levels in Tea (Camellia sinensis) (Articles)

Augustine Mutuku, John Wanyoko, Francis Wachira, Samson Kamunya, Richard Chalo, Samuel Kimutai, Kelvin Moseti, Stephen Karori

American Journal of Plant Sciences Vol.7 No.3，March 23, 2016

DOI: 10.4236/ajps.2016.73049   2,103 Downloads  2,897 Views  Citations

Impact of Seasons on Soil Physico-Chemical Properties and Tea Yields Based on Enriched Sheep Manure Used in Kericho, Kenya (Articles)

Rhoda Ruto, Syphline Kebeney, John K. Bore, David Chemei

Journal of Agricultural Chemistry and Environment Vol.8 No.3，August 27, 2019

DOI: 10.4236/jacen.2019.83015   492 Downloads  770 Views  Citations

Effect of Citric Acid on the Total Monomeric Anthocyanins and Antioxidant Activity of Liquor Made from Unprocessed Purple Leafed TRFK 306 Kenyan Tea Clone (Articles)

Emily C. Kilel, John K. Wanyoko, Abdul K. Faraj, Peninah Ngoda

Food and Nutrition Sciences Vol.10 No.10，October 11, 2019

DOI: 10.4236/fns.2019.1010086   297 Downloads  606 Views  Citations

Effects of Foliar Fertilizer Application on Quality of Tea (Camellia sinensis) Grown in the Kenyan Highlands (Articles)

Rachael Njeri E. Njogu, David K. Kariuki, David M. Kamau, Francis N. Wachira

American Journal of Plant Sciences Vol.5 No.18，August 18, 2014

DOI: 10.4236/ajps.2014.518286   5,634 Downloads  6,482 Views  Citations

Effect of Seasons on Theanine Levels in Different Kenyan Commercially Released Tea Cultivars and Its Variation in Different Parts of the Tea Shoot (Articles)

Too C. Janet, Wanyoko K. John, Kinyanjui Thomas, Moseti O. Kelvin, Wachira N. Francis

Food and Nutrition Sciences Vol.6 No.15，November 23, 2015

DOI: 10.4236/fns.2015.615149   3,167 Downloads  3,826 Views  Citations

Quantitative Estimation of γ-Glutamylethylamide in Commercially Available Made Teas [Camellia sinensis (L.) O. Kuntze, Theaceae] in Kenya (Articles)

Janet Too, John Wanyoko, Thomas Kinyanjui, Kelvin Moseti, Francis Wachira

American Journal of Plant Sciences Vol.7 No.1，January 14, 2016

DOI: 10.4236/ajps.2016.71006   3,422 Downloads  4,089 Views  Citations

Quantitation of the Total Catechin Content in Oils Extracted from Seeds of Selected Tea (Camellia sinensis (L) O. Kuntze, Theaceae) Clones by RP-HPLC (Articles)

Kelvin Omondi George, Kelvin Okong’o Moseti, John Kanyiri Wanyoko, Thomas Kinyanjui, Francis Nyamu Wachira

American Journal of Plant Sciences Vol.6 No.7，April 30, 2015

DOI: 10.4236/ajps.2015.67112   4,707 Downloads  5,821 Views  Citations

Optimization of Aeration Time in the Development Theaflavin-3,3’-Digallate Rich Black Teas (Articles)

Samuel Kimutai, Thomas Kinyanjui, John Wanyoko, Francis Wachira, Stephen Karori, Augustine Muthiani

American Journal of Plant Sciences Vol.6 No.19，December 7, 2015

DOI: 10.4236/ajps.2015.619295   1,915 Downloads  2,549 Views  Citations

Determination of Residual Catechins, Polyphenolic Contents and Antioxidant Activities of Developed Theaflavin-3,3’-Digallate Rich Black Teas (Articles)

Samuel Kimutai, John Wanyoko, Thomas Kinyanjui, Stephen Karori, Augustine Muthiani, Francis Wachira

Food and Nutrition Sciences Vol.7 No.3，March 21, 2016

DOI: 10.4236/fns.2016.73020   1,941 Downloads  2,751 Views  Citations

Variation in Catechin Composition of Popularly Cultivated Tea Clones in East Africa (Kenya) (Articles)

Leonida Cherotich, Samson M. Kamunya, Amos Alakonya, Solomon W. Msomba, Marie A. Uwimana, John K. Wanyoko, Phillip O. Owuor

American Journal of Plant Sciences Vol.4 No.3，March 28, 2013

DOI: 10.4236/ajps.2013.43081   4,555 Downloads  7,149 Views  Citations

Effect of Sunlight Exposure and Different Withering Durations on Theanine Levels in Tea (Camellia sinensis) (Articles)

Janet Chebet Too, Thomas Kinyanjui, John Kanyiri Wanyoko, Francis Nyamu Wachira

Food and Nutrition Sciences Vol.6 No.11，August 24, 2015

DOI: 10.4236/fns.2015.611105   3,382 Downloads  4,493 Views  Citations

Nitrogen and Potassium Dynamics in Tea Cultivation as Influenced by Fertilizer Type and Application Rates (Articles)

Kibet Sitienei, Patrick G. Home, David M. Kamau, John K. Wanyoko

American Journal of Plant Sciences Vol.4 No.1，January 31, 2013

DOI: 10.4236/ajps.2013.41010   5,915 Downloads  9,474 Views  Citations

Comparative Assessment of the Fatty Acid Profiles of Crude Oils Extracted from Seeds of Selected Tea ( Camellia sinensis L.) Cultivars (Articles)

Kelvin Omondi George, John K. Wanyoko, Thomas Kinyanjui, Kelvin O. Moseti, Francis N. Wachira

Food and Nutrition Sciences Vol.7 No.1，January 14, 2016

DOI: 10.4236/fns.2016.71001   4,890 Downloads  5,594 Views  Citations

Genotype and Environment Interactions of Yields and Yield Components of Tea (Camellia sinensis) Cultivars in Kenya (Articles)

Karl W. Nyabundi, P. Okinda Owuor, Godfrey W. Netondo, John K. Bore

American Journal of Plant Sciences Vol.7 No.6，April 25, 2016

DOI: 10.4236/ajps.2016.76081   1,727 Downloads  2,281 Views  Citations

Effect of Spices on Consumer Acceptability of Purple Tea (Camellia sinensis) (Articles)

Simon O. Ochanda, John K. Wanyoko, Henrik K. Ruto

Food and Nutrition Sciences Vol.6 No.8，May 26, 2015

DOI: 10.4236/fns.2015.68073   3,434 Downloads  4,235 Views  Citations
This article belongs to the Special Issue on Food Science and Technology

Selected Inorganic Nutrients in Black Tea from Three Tea Growing Agro-Ecological Areas in Kenya (Articles)

Mangenya Thaddeus Mose, Kelvin O. Moseti, John K. Wanyoko, Johnson K. Kinyua, Daniel Kariuki, Esther N. Magiri, Martin A. Obanda

American Journal of Plant Sciences Vol.5 No.4，February 26, 2014

DOI: 10.4236/ajps.2014.54061   4,470 Downloads  6,405 Views  Citations
This article belongs to the Special Issue on Mineral Nutrients in Plants

Cardioprotective effects of tea and its catechins (Articles)

Nana Li, Yue Zhao, Yuerong Liang

Health Vol.5 No.4A，April 18, 2013

DOI: 10.4236/health.2013.54A004   4,718 Downloads  7,429 Views  Citations
This article belongs to the Special Issue on Hypertension and Cardiovascular Diseases

Hyperparasitism of Homona coffearia Nietn. (Lepidoptera: Tortricidae), the Tea Tortrix of Sri Lanka: Implications for Biological Control (Articles)

Ravindra S. Walgama

Advances in Entomology Vol.3 No.2，April 2, 2015

DOI: 10.4236/ae.2015.32005   2,798 Downloads  3,876 Views  Citations

Influence of Land Use Activities on Riparian Vegetation, Soil and Water Quality: An Indicator of Biodiversity Loss, South West Mau Forest, Kenya (Articles)

Naomi Njue, Eric Koech, Joseph Hitimana, Peter Sirmah

Open Journal of Forestry Vol.6 No.5，September 5, 2016

DOI: 10.4236/ojf.2016.65030   1,694 Downloads  3,201 Views  Citations