1. Faculty of Science, Department of Chemistry, and Center for Innovation in Chemistry, Khon Kaen University, Khon Kaen, Thailand
2. Faculty of Science, Applied Taxonomic Research Center, Khon Kaen University, Khon Kaen, Thailand
3. Faculty of Medical Science, Nakhonratchasima College, Nakhonratchasima, Thailand
4. Faculty of Science, Department of Microbiology, Khon Kaen University, Khon Kaen, Thailand