1. College of Food Science and Nutritional Engineering; China Agricultural University; No.17 Qinghua East Road Beijing 100083 China
2. National Engineering Research Centre for Fruit and Vegetable Processing; Beijing 100083 China
3. Key Laboratory of Fruit and Vegetable Processing; Ministry of Agriculture; Beijing 100083 China
4. Food and Drug Administration of Beijing; Xicheng District Beijing 100033 China
5. Institute of Agro-products Processing Science and Technology; Chinese Academy of Agricultural Science; Beijing 100193 China