1. Division of Bioresource, Paper and Coatings Technology, School of Industrial Technology Universiti Sains Malaysia Penang Malaysia
2. Pulp and Paper Division Federal Institute of Industrial Research Oshodi Lagos Nigeria
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 Kota Bharu Malaysia
6. Department of Natural Resource Ecology and Management Oklahoma State University Stillwater Oklahoma USA