1. Peter Grünberg Institute (PGI-8); Forschungszentrum Jülich GmbH; 52425 Jülich Germany
2. The Key Laboratory of Carbohydrate Chemistry and Biotechnology; Ministry of Education, School of Biotechnology; Jiangnan University; Lihu Avenue 1800 214122 Wuxi P. R. China
3. School of Pharmaceutical Science; Jiangnan University; Lihu Avenue 1800 214122 Wuxi P. R. China