1. Department of Forest Biology, Faculty of Forestry, Kasetsart University, Bangkok, Thailand
2. Center for Advance Studies in Tropical Natural Resources, National Research University-Kasetsart University, Kasetsart University, Bangkok, Thailand
3. Kasetsart University Research and Development Institute (KURDI), Kasetsart University, Bangkok, Thailand
4. Department of Food and Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
5. Department of Botany, Faculty of Science, Kasetsart University, Bangkok, Thailand