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Dihydroquercetin
1, Specification:NF11 DAB9 DAB10
2, ISO 9001:2000 Certificate
3, Test Methord: HPLC
4, CAS NO.: 153-18-4
Dihydroquercetin is practically insoluble in water while soluble in methanol and ethanol. is a supplement used to treat poor blood circulation, hemorrhoids, and Meniere's disease.
It may also be used to treat varicose veins or skin bruising.
It can enhances the absorption of Vitamin C, helps relieve pain, bumps and bruises, has an antibacterial effect, promotes circulation, stimulates bile production, helps lower blood cholesterol, and prevents cataracts.
Package: 25 Kg/ fiber drum
Storage: Store in cool & dry area, keep away from the direct light and heat. Shelf life: Two years
Test items | Specification | Test results |
Assay(androus substance UV) | 95%-101.5% Dihydroquercetin | 95.70% |
Appearance | Yellow or greenish-yellow crystalline powder | Complies |
Odor | Characteristic | Complies |
Taste | Characteristic | Complies |
Solubility | soluble inboiling ethanol and boiling water,dissolves in solution of alkali hydroxides. | Complies |
Mesh size | 80 mesh | Complies |
Residue on ignition | ≤0.3% | 0.22% |
Loss on drying | 5.5-9.0% | 7.18% |
Impurity quercetin | ≤4% | Complies |
ChlorophyII | ≤0.004% | Complies |
Red pigments | ≤0.004% | Complies |
Heavy metals | ≤20ppm | Complies |
Total plate count | ≤1000cfu/gm | Complies |
Yeast&mold | ≤100cfu/gm | Complies |
Salmonella | Negative | Negative |
E.coli | Negative | Negative |
ITEMS | SPECIFCATIONS | RESULTS |
Appearance | Yellow or greenish-yellow,crystalline powder | Greenish-yellow crystalline powder |
Solubility | Practically insoluble in chloroform and ether | Complies |
Infinitesimally soluble in cool water | Complies | |
Sparingly soluble in boiling ethanol and boiling water | Complies | |
Dissolves in solution of alkali hydroxides | Complies | |
Identification | A.B.C | Complies |
Loss on drying | 5.5-9.0% | 7.76% |
Residue on Ignition | ≤0.5% | 0.35% |
Impurity quercetin | ≤5% | < 4% |
Red pigments | ≤0.004% | <0.004% |
Heavy Metal | ≤20ppm | <10ppm |
Mesh Size | 100% pass 80 mesh | 100% pass 80 mesh |
Assay (anhydrous substance) | 95.0%-101.5% Dihydroquercetin | 95.32% |
Conclusion: It conforms to NF11 STANDARD | ||
natural Dihydroquercetin in bulk supply Quercetin powder extract