1. School of Food Science and Engineering, Tonghua Normal University, Tonghua, P.R. China
2. Hebei Key Laboratory of Study and Exploitation of Chinese Medicine, Chengde Medical University, Chengde, P.R. China
3. School of Medicine and Pharmacy, Tonghua Normal University, Tonghua, P.R. China
4. School of Life Science, Tonghua Normal University, Tonghua, P.R. China