1. Chinese-German Joint Laboratory for Natural Product Research, Qinba State Key Laboratory of Biological Resources and Ecological Environment, College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China
2. Department of Biochemistry, Faculty of Natural and Applied Sciences, Umaru Musa Yar'adua University Katsina, Katsina, Nigeria
3. Biomedical Science Research and Training Centre, Yobe State University, Damaturu, Nigeria
4. Xi'an Middle School of Shaanxi Province, Fengcheng Wulu 69, Weiyang, Xi'an, China
5. Department of Biology, Centre of Molecular & Environmental Biology, University of Minho, 4710-057, Braga, Portugal
6. Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, N1G 2W1, Guelph, Ontario, Canada