1. College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
2. R & D department, Inner Mongolia Kerqin Cattle Co, Ltd, Tongliao, China
3. R & D department, Gansu Qilian Muge Food Industry Co, Ltd, Zhangye, China
4. R & D department, Shandong Lurun Food Co Ltd, Weifang, China