1. Inst. of Food and Nutraceutical Science, School of Agriculture and Biology; Shanghai Jiao Tong Univ.; Shanghai 200240 People's Republic of China
2. Wilmar (Shanghai) Biotechnology Research & Development Center Co. Ltd.; Shanghai 200137 People's Republic of China
3. Dept. of Nutrition and Food Science; Univ. of Maryland; College Park Md. 20742 U.S.A