1. School of Mathematics and Statistics; Central South University; Changsha P.R. China
2. Yunnan Food Safety Research Institute; Kunming University of Science and Technology; Kunming P.R. China
3. Department of Applied Biology and Chemical Technology; The Hong Kong Polytechnic University; Hung Hom Kowloon SAR Hong Kong P.R. China
4. State Key Laboratory of Chinese Medicine and Molecular Pharmacology; Shenzhen P.R. China