1. School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
2. School of Languages and General Education, Walailak University, Nakhon Si Thammarat, Thailand
3. Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
4. Faculty of Pharmaceutical Sciences, Ubon Rachathani University, Ubon Ratchathani, Thailand
5. Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
6. Biomass and Oil Palm Center of Excellence, Walailak University, Nakhon Si Thammarat, Thailand