1. Faculty of Agriculture, Forestry and Fishery, Nghe An College of Economics, Vinh City, Nghe An Province, Vietnam
2. Faculty of Chemistry, Vinh University, 182- Le Duan, Vinh, Vietnam
3. Faculty of Nature Science, Hong Duc, University, 307-Le Lai, Thanh Hoa City, Thanh Hoa Province, Vietnam
4. Natural Products Research Unit, Department of Chemistry, Faculty of Science, Lagos State University, Badagry Expressway Ojo, P. M. B. 0001, Lasu Post Office, Ojo, Lagos, Nigeria