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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. GO | IR spectrum is concordant with spectrum of Quercetin RS . | |
B. UV | The absorptivity at the maximum at 371nm is 75.5–80.0 . | |
C. HPLC | Retention time of the sample matches with the standard in HPLC purity test. | |
Active Ingredients Tests | ||
Quercetin dihydrate (HPLC) | ≥95.00% | USP43 |
Kaempferol | ≤0.50% | USP43 |
Individual impurities | ≤0.10% | USP43 |
Total Impurities | ≤2.00% | USP43 |
Physical Tests | ||
Appearance | Yellow crystalline powder | Visual |
Particle size | 98% pass 80 mesh | Ch.P 2020 IV |
Water | ≤12.00% | USP43 |
Residue on Ignition | ≤0.10% | USP43 |
Chemical Tests | ||
Heavy Metals | ≤10.00ppm | USP43 |
Pb | ≤3.00ppm | USP43 |
As | ≤1.00ppm | USP43 |
Cd | ≤1.00ppm | USP43 |
Hg | ≤0.10ppm | USP43 |
Sulphate | ≤1,000ppm | Ch.P 2020 IV |
Microbiological Tests | ||
Total Bacterial Counts | ≤1,000cfu/g | USP43 |
Yeasts and Molds | ≤100cfu/g | USP43 |
E. Coli | Negative in 1g | USP43 |
Salmonella | Negative in 10g | USP43 |
* 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 love an incredibly fantastic standing amid our consumers for our superb item high quality, aggressive rate and also the finest assistance for Factory wholesale Hot Selling Amazon High Quality Plant Extract Rutin, It is our wonderful honor to satisfy your needs.We sincerely hope we are able to cooperate along with you from the in the vicinity of future.
Factory wholesaleChina Vitamin P and Plant Extract, Our company will adhere to “Quality first, , perfection forever, people-oriented , technology innovation”business philosophy. Hard work to keep making progress, innovation in the industry, make every effort to first-class enterprise. We try our best to build the scientific management model, to learn abundant skilled knowledge, to develop advanced production equipment and production process , to create the first-call quality solutions, reasonable price , high quality of service , quick delivery , to offer you create new value .