1. College of Food Engineering and Biotechnology; Tianjin Univ. of Science and Technology; Tianjin 300457 P. R. China
2. Beijing Advanced Innovation Center for Food Nutrition and Human Health; Beijing Technology and Business Univ.; Beijing 100048 P. R. China
3. College of Food Science; Beijing Technology and Business Univ.; Beijing 100048 P. R. China
4. Luzhou Laojiao Co. Ltd.; Luzhou Sichuan 646000 P. R. China
5. Dept. of Food, Nutrition and Packaging Sciences; Clemson Univ.; Clemson SC 29634 U.S.A