1. Department of Chemistry, Michael Okpara University of Agriculture, Umudike, Nigeria
2. Department of Botany, Institute for Coastal and Marine Research (CMR), Nelson Mandela University, Port Elizabeth, South Africa
3. Department of Chemical Sciences, University of Johannesburg, Doornfontein, South Africa
4. Department of Chemical Sciences, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
5. Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria
6. Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
7. Department of Chemistry, University of the Free State, Bloemfontein, South Africa
8. College of Science, Engineering and Technology (CSET), University of South Africa, Johannesburg, South Africa
9. Department of Chemical Engineering, Nnamdi Azikiwe University, Awka, Nigeria
10. Department of Chemical Engineering, University of Ilorin P.M.B, Ilorin, Nigeria