1 Discipline of Genetics, School of Life Sciences, University of KwaZulu-Natal, P/Bag X54001, Westville, Durban, 4000, South Africa.
2 Discipline of Chemical Engineering, University of KwaZulu-Natal, Howard Campus, Durban, 4041, South Africa.
3 Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of the Free State, Bloemfontein, South Africa.
4 Department of Industrial Chemistry, Federal University Oye-Ekiti, Oye-Ekiti, Nigeria.
5 Discipline of Genetics, School of Life Sciences, University of KwaZulu-Natal, P/Bag X54001, Westville, Durban, 4000, South Africa. adelekem@ukzn.ac.za.