1. Biosystems and Agricultural Engineering, and Food Science and Nutrition, University of Minnesota, 1390 Eckles Ave., St., Paul, MN 55108.
2. Corresponding author. E-mail: ruanx001@umn.edu
3. MOE Key Laboratory of Food Science, Nanchang University, Jiangxi 330047, China.
4. Biosystems and Agricultural Engineering, University of Minnesota, St., Paul, MN 55108.
5. Food Science and Nutrition, University of Minnesota, St. Paul, MN 55108.