1. Graduate School, Khon Kaen University, Khon Kaen 40002, Thailand
2. Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand
3. Fermentation Research Center for Value Added Agricultural Products (FerVAAP), Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand