1. Institute of Biomaterials and Tissue Engineering Huaqiao University Xiamen 361021 P. R. China
2. College of Materials Science and Engineering Huaqiao University Xiamen 361021 P. R. China
3. Fujian Provincial Key Laboratory of Biochemical Technology Huaqiao University Xiamen 361021 P. R. China
4. College of Chemical Engineering Huaqiao University Xiamen 361021 P. R. China
5. Department of Biotechnology and Institute of Life Science National Dong Hwa University Hualien 97401 Taiwan
6. Australian Institute for Bioengineering and Nanotechnology The University of Queensland Brisbane QLD 4072 Australia