1. Department
of Food Science and Engineering, School of Chemical Engineering, Northwest University, 229 North TaiBai Road, Xi’an 710069, China
2. Institute
of Apiculture Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China
3. Risk Assessment Laboratory for Bee Products Quality and Safety, Ministry of Agriculture, Beijing 100093, China
4. Bee Product Quality Supervisionand Testing Center, Ministry of Agriculture, Beijing 102202, China