1. Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, Thailand
2. Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
3. Center of Antimicrobial Biomaterial Innovation-Southeast Asia, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
4. Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand