1. Faculty of Biology, Vinh University, Vinh City, Vietnam
2. Faculty of Agriculture, Forestry and Fishery, Nghe An College of Economics, Vinh City, Vietnam
3. Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
4. Natural Products Research Unit, Faculty of Science, Department of Chemistry, Lagos State University, Ojo, Lagos, Nigeria