1. College of Food Science and Technology; Huazhong Agricultural Univ.; Wuhan 430070 China
2. Key Laboratory of Environment Correlative Dietology (Ministry of Education); Huazhong Agricultural Univ.; Wuhan 430070 China
3. Natl. Engineering Laboratory for Rice and By-Products Further Processing; Central South Univ. of Forestry and Technology; Changsha 410004 China