1. Program of Biotechnology and Department of Chemistry, Faculty of Science, and Department of Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Thailand, Department of Microbiology, Faculty of Science, Mahidol University, Thailand, Department of Physics, Faculty of Science and Technology, Thammasat University, Thailand, and Chulabhorn Research Institute, Vipavadee-Rangsit Highway, Bangkok 10210, Thailand