Chantel W. Swart1, Pieter W. J. van Wyk 2, Carolina H. Pohl1, Wilma M. Kriel1 and Johan L. F. Kock1*
1UNESCO-MIRCEN: Industrial Biotechnology, Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, Bloemfontein, 9300, South Africa.
2Centre for Microscopy, University of the Free State, Bloemfontein, 9300, South Africa.
