(1. School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, Anhui 230000, China; 2. Institute of Food Processing, Anhui Agricultural University, Hefei, Anhui 230000, China; 3. Anhui Agricultural Products Processing Engineering Laboratory, Hefei, Anhui 230000, China; 4. Anhui Grain Industry Association, Hefei, Anhui 230000, China)