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-N10
PS-BA-N50
PS-BA-N160
PS-BA-N270
PS-BA-N500
Mw X
10-4
1.1
5.2
16.1
26.5
50.0
Pd
1.02
1.03
1.03
1.03
1.05
Standards
PS-BA-N900
PS-BA-N1000
PS-BA-N1500
PS-BA-N1800

 

Mw X
10-4
89.0
100.4
150.8
180.0

 

Pd
1.05
1.05
1.05
1.05

 

 
 
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