1. Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand;
2. Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand;
3. Department of Pharmaceutical Sciences, Thammasat University, Pathumthani, Thailand
4. Research Group for Pharmaceutical Activities of Natural Products using Pharmaceutical Biotechnology (PANPB), National Research University-Khon Kaen University, Khon Kaen, Thailand;