1. State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, P. R. China
2. Marine Biotechnology, Shandong Industrial Technician College, Weifang 261053, P. R. China
3. Organic Chemistry Laboratory, Taishan University, Tai’an 271021, P. R. China