1. College of Food Science and Technology; Central South University of Forestry and Technology, Changsha; Hunan 410004 P. R. China
2. State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University, Changsha; Hunan 410082 P. R. China
3. Department of Biology and Chemistry; City University of Hong Kong; 83 Tat Chee Avenue, Kowloon Hong Kong P. R. China
4. Singapore-MIT Alliance for Research and Technology (SMART); 1 CREATE Way Singapore 138602 Singapore
5. Department of Chemical and Biomolecular Engineering and Department of Molecular Physiology and Biophysics; Vanderbilt University; Nashville TN 37235 USA
6. Biotechnology and Health Centre; Shenzhen Research Institute of City University of Hong Kong; Shenzhen 518057 P. R. China