We constantly stick to the theory “Quality To start with, Prestige Supreme”. We have been fully committed to offering our consumers with competitively priced quality products and solutions, prompt delivery and qualified service for Cheap PriceList for E. K Herb Factory 12 Years Supply 100% Natural Pure Sophora Japonica Extract Rutin Quercetin 95% 98% CAS 153-18-4, We welcome shoppers, enterprise associations and mates from all sections of your environment to call us and seek out cooperation for mutual advantages.
We constantly stick to the theory “Quality To start with, Prestige Supreme”. We have been fully committed to offering our consumers with competitively priced quality products and solutions, prompt delivery and qualified service for China Plant Extract and Herbal Extract, With the goal of “zero defect”. To care for the environment, and social returns, care employee social responsibility as own duty. We welcome friends from all over the world to visit and guide us so that we can achieve the win-win goal together.
Quercetin- (Sophora japonica extract) -was a hydrolysis product from Rutin which extracted from dried flower buds of Sophora japonica L, by alkali extraction, acid precipitation and purification process, it NLT 98.0% and NMT 102.0% of quercetin, calculated on the anhydrous basis.
① Quercetin Powder 95% HPLC
② Quercetin Powder 98% UV
③ Quercetin Granule 95% HPLC
③ Quercetin dihydrate 95% HPLC
❶ Quercetin is a kind of natural vitamin P, which has the ability to reduce capillary permeability and antioxidant.
❷ Quercetin is an anti-inflammatory & antiviral agent, has strong inhibit ability on Staphylococcus aureus, E.coli.
❸ Quercetin has strong antitumor activity, which can reduce the proliferation activity of tumor cells.
❹ Quercetin has effects on the central nervous system, analgesia, anti-depression and improve memory.
Analysis Items | Specifications | Methods |
Identifications | ||
A. IR | IR spectrum is concordant with spectrum of Quercetin RS <197K>. | |
B. UV | The absorptivity at the maximum at 371nm is 75.5–80.0 <197U>. | |
C. HPLC | Retention time of the sample matches with the standard in HPLC purity test. | |
Active Ingredients Tests | ||
Quercetin dihydrate (HPLC) | ≥95.00 % | USP43<621> |
Kaempferol | ≤0.50% | USP43<621> |
Individual impurities | ≤0.10% | USP43<621> |
Total Impurities | ≤2.00% | USP43<621> |
Physical Tests | ||
Appearance | Yellow crystalline powder | Visual |
Particle size | 98% pass 80 mesh | Ch.P 2020 IV<0982> |
Water | ≤12.00% | USP43<921> |
Residue on Ignition | ≤0.10% | USP43<281> |
Chemical Tests | ||
Heavy Metals | ≤10.00ppm | USP43<231> |
Pb<Lead> | ≤3.00ppm | USP43<211> |
As<Inorganic arsenic> | ≤1.00ppm | USP43<251> |
Cd<Cadmium> | ≤1.00ppm | USP43<232> |
Hg<Total mercury> | ≤0.10ppm | USP43<261> |
Sulphate | ≤1,000ppm | Ch.P 2020 IV<0802> |
Microbiological Tests | ||
Total Bacterial Counts | ≤1,000cfu/g | USP43<2021> |
Yeasts and Molds | ≤100cfu/g | USP43<2021> |
E. Coli | Negative in 1g | USP43<2022> |
Salmonella | Negative in 10g | USP43<2022> |
* Statements: Allergen Free,Irradiated free, GMO free, Additives free. |
★ Customized specification,granulation, capsulation service is acceptable.
★ Standardized products, reasonable price, professional service is continuously provided.We constantly stick to the theory “Quality To start with, Prestige Supreme”. We have been fully committed to offering our consumers with competitively priced quality products and solutions, prompt delivery and qualified service for Cheap PriceList for E. K Herb Factory 12 Years Supply 100% Natural Pure Sophora Japonica Extract Rutin Quercetin 95% 98% CAS 153-18-4, We welcome shoppers, enterprise associations and mates from all sections of your environment to call us and seek out cooperation for mutual advantages.
Cheap PriceList for China Plant Extract and Herbal Extract, With the goal of “zero defect”. To care for the environment, and social returns, care employee social responsibility as own duty. We welcome friends from all over the world to visit and guide us so that we can achieve the win-win goal together.