1. Institute of Product Quality and Standardization, Maejo University, Chiang Mai 50290, Thailand
2. Department of Chemistry, Faculty of Science and Technology, Uttaradit Rajabhat University, Uttaradit 53000, Thailand
3. School of Renewable Energy, Maejo University, Chiang Mai 50290, Thailand
4. Asian Development College for Community Economy and Technology, Chiang Mai Rajabhat University, Chiang Mai 50180 Thailand