Product Details

 
Product:                           Standards for biological activity study
 
 
Structure description:                 Linear chain with mixed linkage of (1,3) and (1,4);
                                                     The ratio of tri- and tetra- building block is ~2:1
 

 

 

Properties:
                                   Appearance: white powder, odorless
                                   Starch: not detected (n.d.)
                                                Protein: n.d.
                                                Moisture: < 3%
                                                Arabinoxylan: < 0.5%
                                                Ash: < 0.5%
                                                Beta-glucan: > 97%
                                                Water-solubility: water soluble.
 
 
Molecular weight (Mw)and Polydispersity (Pd):
 
 
Standards
PS-BA-B50
PS-BA-B500
PS-BA-B2000
PS-BA-B2500
Mw X 10-4
5
50
200
250
Pd
1.5
1.5
1.5
1.5
 
 
Weight average molecular weight Mw was determined by Viscotek triple detector array system equipped
   with  size exclusion chromatography, light scattering detector using a 90o angle geometry; dn / dc = 0.146
 
 
Method of dissolution:
           1.  Measure a specified amount of standards in a sample bottle;
           2.  Add distilled water and dissolve it at 90 for 1h, stir the water gently until they dissolve
                homogeneously with the water
           3.  The solution is then allowed to cool to room temperature and the volume adjusted to 50 ml. It can be
                preserved at 4 for 3 days.
 
 
Storage:
          
             Store dry at room temperature in well sealed containers. Under these conditions, the product is stable
             for several years.