Preliminary Study on Molecular Weight Distribution and Reducing Capacity of Metaplexis Japonica Polysaccharide
MA Yinda
GUO Bin
Abstract：Objective To obtain metaplexis japonica polysaccharide components of different ranges of relative molecular weight and to investigate the influence of the concentration, pressure and pH on membrane separation to figure out the best condition for mem-brane separation and the reducing capacity. Methods The polysaccharide solution that was decoloured and deproteined passed through the hollow fiber membrane with molecular cut off of 300 kDa, 100 kDa and 50 kDa, 10 kDa and 3 kDa in turn. The single fac-tor experiment was used to explore the influencing factors for the membrane separation of metaplexis japonica and determine the reduc-ing capacity. Results The relative molecular weight of metaplex japonica polysaccharide mostly stayed from 50 kDa to 100 kDa. 2. When the membrane separation was conducted in the polysaccharide solution, the membrane flux reached the highest level with a pressure of 0. 2 mPa, concentration of 30 mg/mL and pH of 5. 3. Metaplexis japonica owned reducing capacity. Conclusion The range of relative molecular weight of metaplexis japonica polysaccharide can be determined with hyperfiltration membrane. The reducing capacity of the polysaccharide increases with higher concentration.
Keywords：metaplexis japonicapolysaccharidesmembrane separationrelative molecular weightreducing capacity
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 12-15 )