1. School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Biomass-derived Functional Oligosaccharides Engineering Technology Research Center of Anhui Province, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
2. Experimental and Training Management Center, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China