1. a Teaching Research Group of Environment Engineering, Department of Chemical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang, Jiangxi 330034, P.R. China
2. b Birmingham Carbohydrate and Protein Technology Group, School of Chemistry, University of Birmingham, Research Laboratory for the Chemistry of Bioactive Carbohydrates and Proteins, Birmingham, B15 2TT, UK
3. c Birmingham Carbohydrate and Protein Technology Group, School of Chemistry, University of Birmingham, Research Laboratory for the Chemistry of Bioactive Carbohydrates and Proteins, Birmingham, B15 2TT, UK