Faculty of Sciences
Department of Physical and Chemical Sciences (PCS)
PhD topic: Phenolics and Condensed Tannins of Forage Plants from Botswana and their Biological Significance
1. PhD in Chemistry, Massey University (2012), Palmerston North, New Zealand
2. MSc in Chemistry, Massey University (2004), Palmerston North, New Zealand
3. BSc in Chemistry and Environmental Science, University of Botswana (1997), Gaborone, Botswana
1. Organic Chemistry
2. Analytical Chemistry
Polyphenols/condensed/hydrolysable tannins from indigenous foods, forages, medicinal plants and their health and nutritional benefits in animals and humans. Separation, characterization and quantification of polyphenolic compounds in indigenous foods and forages, medicinal plants, new studies of methods of extraction and purification, Chemical transformations of polyphenols, biological activity: antiparasitic, antimicrobial, antioxidant, immunostimulatory and other biological properties of polyphenols. Nutritional and antinutritional factors in indigenous foods, forages and medicinal plants
Potential Research topics
1. Nutrient, Antinutritional Factors, Heavy Metals and Polyphenols from Indigenous Edible Plants of Botswana
2. Polyphenols from Forage Plants in Botswana
3. Polyphenols from Medicinal Plants in Botswana
1. Polyphenols from Forage Plants in Botswana
2. The role played by ethnoveterinary medicine in controlling gastrointestinal nematodes in goats. MSc Student supervision, Mr Island Ngwenya, January 2019
Tibe, O., Harding, D.R., Lesperance, L. (2014). ‘Condensed tannins and flavonols of selected forage plants from Botswana (Hedysarum coronarium)’. Asian Journal of Agriculture and Food Sciences, Vol. 2: 478-486.
Tibe, O., Sutherland, I., Lesperance, L., and Harding, D.R. (2013). ‘The effect of purified condensed tannins of forage plants from Botswana on the free-living stages of gastrointestinal nematode parasites of livestock’. Veterinary Parasitology, Vol. 197: 160-167.
Tibe, O., Sutherland, I., Lesperance, L., Pernthaner, A., and Harding, D.R. (2012). ‘Condensed tannins from Botswana forage plants are effective priming agents of gamma delta T cells in ruminants’. Veterinary Immunology and Immunopathology. Vol. 146 (2): 237-244.
Tibe, O., Lesperance, L., Fraser, K., and Harding, D.R. (2011). ‘Condensed tannins and flavonoids from the forage legume Sulla (Hedysarum coronarium)’. Journal of Agricultural and Food Chemistry, Vol. 59 (17): 9402-9409.
12 May, 2023