D-ribose is used in the synthesis of VB2 and nucleoside, mostly used in health food or as food additives.
D-ribose details as follows,
Item | Specification | Result |
Appearance | white or slightly yellow crystals or crystaline powder, reducing sugar | white crystals, reducing sugar |
State of solution | ≥95% | 99.4% |
Melting point | 164-168°C | 165-167°C |
Specific optical rotation | -18.0° to -22.0° | -20.4° |
Residue on ignition | ≤0.2% | 0.05% |
Loss on drying | ≤3.0% (in vaccum, 60C, 3 hours) | 0.06% |
Heavy metals | ≤10 ppm | NMT5ppm |
Arsenic | ≤0.1mg/kg | NMT0.01mg/kg |
Lead (Pb) | ≤0.1mg/kg | NMT0.05mg/kg |
Total plate count | NMT100cfu/g | NMT10 cfu/g |
Pathogenic bacteria | Negative | Negative
|
Assay | 97.0-102% (dry basis) | 99.40% |
D-Ribose
