1. Department of Food Science, Faculty of Food Science and Technology; Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia
2. Laboratory of Natural Products; Institute of Bioscience, Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia
3. Department of Pharmaceutical Chemistry, Faculty of Pharmacy; International Islamic University Malaysia; 25200 Kuantan Malaysia