1. Dept. of Food Science, Faculty of Food Science and Technology; Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia
2. Inst. of Tropical Agriculture; Univ. Putra Malaysia; 43400 Serdang Selangor Malaysia
3. Dept. of Food Technology, Faculty of Food Science and Technology; Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia
4. Dept. of Pharmaceutical Chemistry; Faculty of Pharmacy; International Islamic Univ. Malaysia; 25200 Kuantan Pahang Malaysia