1. Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, P. R. China
2. Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
3. Testing Center for Quality Supervision on Agro-Products and Foods, Ministry of Agriculture and Rural Affairs, Beijing 100193, P. R. China
4. Institute of Western Agriculture, The Chinese Academy of Agricultural Sciences, Changji 831100, P. R. China