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