1. Department of Quality Control, Jesil Pharmaceutical Industries Limited, Minna, Nigeria.
2. Department of Microbiology, Bayero University, Kano, Nigeria.
3. Department of Quality Control, LeyJay Pharmaceuticals Limited, Minna, Nigeria.
4. Department of Microbiology, Federal University of Technology, Minna, Nigeria.
5. Department of Applied Biology, College of Science and Technology, Kaduna Polytechnic, Kaduna, Nigeria.
6. Department of Plant and Environmental Biology, Kwara State University, Malete, Ilorin, Nigeria.