1. Department of Biochemistry, Institute of Chemistry, University of Sao Paulo, Sao Paulo, Brazil
2. Department of Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ikwo, Nigeria
3. Department of Biochemistry, Ebonyi State University, Abakaliki, Ebonyi State, Nigeria
4. Department of Microbiology, Ebonyi State University, Abakaliki, Ebonyi State, Nigeria