1. Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P. R. China
2. Key Laboratory for Meat Processing of Sichuan Province, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, P. R. China
3. Jiulongpo Center for Disease Control and Prevention of Chongqing, Chongqing 400039, P. R. China