1. Pharmaceutical Sciences and Technology Program, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
2. Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
3. Natural Products and Nanoparticles Research Unit (NP2), Chulalongkorn University, Bangkok, Thailand
4. Department of Chemical Metrology and Biometry, National Institute of Metrology, Pathum Thani, Thailand