1. Department of Process and Food Engineering; Faculty of Engineering, University Putra Malaysia; 43400 Serdang Selangor Malaysia
2. Department of Chemical and Environmental Engineering; Faculty of Engineering, Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia
3. Advanced Materials and Nanotechnology Laboratory; Institute of Advanced Technology, Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia