1. College of Bioresources Chemical and Materials Engineering; Shaanxi University of Science and Technology; Xi'an 710021 Shaanxi People's Republic of China
2. Key Laboratory of Leather Cleaner Production, China National Light Industry; Xi'an 710054 Shaanxi Province People's Republic of China
3. School of Arts and Sciences; Shaanxi University of Science and Technology; Xi'an 710021 Shaanxi Province People's Republic of China