1. Division of Bioresource Technology, School of Industrial Technology Universiti Sains Malaysia Penang Malaysia
2. Chemical Engineering Program, Faculty of Engineering Universiti Malaysia Sabah Kota Kinabalu Sabah Malaysia
3. School of Chemical Sciences Universiti Sains Malaysia Penang Malaysia
4. School of Biological Sciences Universiti Sains Malaysia Penang Malaysia
5. Faculty of Engineering and Technology Universiti Malaysia Kelantan Kelantan Malaysia
6. Department of Natural Resource Ecology and Management Oklahoma State University Stillwater Oklahoma USA