1. Nanotechnology and Catalysis Research Center, Institute of Graduate Studies, University of Malaya, Kuala Lumpur, Malaysia
2. Institute of Halal Research University of Malaya, University of Malaya, Kuala Lumpur, Malaysia
3. Centre for Research in Biotechnology for Agriculture, University of Malaya, Kuala Lumpur, Malaysia
4. Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia