1. Department of Biological Engineering and Environmental Science; Changsha University; Changsha Hunan People's Republic of China
2. Chemometrics and Herbal Medicine Laboratory; Department of Applied Biology and Chemical Technology; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong People's Republic of China
3. Research Center of Modernisation of Chinese Herbal Medicine; College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan People's Republic of China