1. Computational and Bio-Simulation Research Group, University of Calabar, Calabar P.M.B 1115, Nigeria
2. Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar P.M.B 1115, Nigeria
3. Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar P.M.B 1115, Nigeria
4. Department of Chemistry, Tshwane University of Technology, Pretoria 0183, South Africa