1. College of Agricultural and Marine Sciences; Sultan Qaboos Univ; P.O. Box 34, Al-Khod 123 Sultanate of Oman
2. Malaysian Palm Oil Board; 6 Persiaran Institusi, Bandar Baru Bangi 43000 Kajang Selangor Malaysia
3. Dept. of Food and Nutritional Sciences; Univ. of Reading; Whiteknights P.O. Box 226 Reading RG6 6AP U.K