1. College of Biomass Science and Engineering
2. Sichuan University
3. Chengdu 610065
4. P.R. China
5. Key Laboratory of Leather Chemistry and Engineering of Ministry of Education
6. Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
7. China West Normal University
8. Nanchong 637009
9. School of Life Science and Food Engineering
10. Yibin University
11. Yibin 644007
12. Department of Chemistry