Hafizah Y. Chenia 1,2, Balakrishna Pillay1 and Dorsamy Pillay1,3* 1Department of Microbiology, School of Microbiology and Biochemistry, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa; 2Department of Microbiology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa; 3Department of Biotechnology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa