Product: Oat Beta Glucan Mw Individual Standard
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-OBG-H-1000 |
PS-OBG-H-1500 |
PS-OBG-H-1800 |
| Mw X 10-5 |
10.4 |
15.08 |
18.0 |
|
Pd |
1.05 |
1.08 |
1.1 |
Weight average molecular weight Mw was determined by Viscotek triple detector array system equipped with size exclusion chromatography, light scattering detector using a 90 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 60℃ for 15-30minutes, stir the water gently until they dissolve homegeneously with the water
3. Filtrate the solution with a 0.45 μm filter and a standard solution will be obtained.
Storage:
1. Store dry at room temperature in well sealed containers. Under these conditions, the product is stable for several years.
2. When in a liquid state, keep it in a refrigerator at 4℃. If filtrated with a 0.45 μm filter and added 0.02 wt% sodium azide as an antiseptic, it can be preserved at 4℃ for 2 months.
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