Natural quercetin is widely found in the stem bark, flowers, leaves, seeds and fruits of rutin and other plants, but mostly in the form of glycosides. Quercetin powder can be obtained by acid hydrolysis.
It is a polyhydroxyflavonoid compound with multiple biological activities and high medicinal value. It can be used to develop quercetin series supplements, functional foods, health foods and medicines, providing a new way to health.
| Item | Specification | Method | Result |
| Appearance | Green Yellow Powder | Organoleptic | Conforms |
| Loss on Drying | ≤3.0% | HB43-S Moisture Meter | 2.80% |
| Ignition Ash | ≤2.0% | USP37<561> | 1.30% |
| Mesh Size | 98% Through 80 Mesh | Organoleptic | Conforms |
| Mercury(Hg) | ≤0.1mg/Kg | Atomic Absorption | Conforms |
| Lead(Pb) | ≤3.0 mg/Kg | Atomic Absorption | Conforms |
| Arsenic(As) | ≤2.0 mg/Kg | Atomic Absorption | Conforms |
| Cadmimum(Cd) | ≤1.0 mg/Kg | Atomic Absorption | Conforms |
| Total Plate Count | ≤1000cfu/g | USP30<61> | Conforms |
| Yeast&Mold | ≤500cfu/g | USP30<61> | Conforms |
| E.Coli | Negative | USP30<62> | Conforms |
| Salmonella | Negative | USP30<62> | Conforms |
| Conclusion: | Meet the standard |
It has anti-inflammatory and antioxidant properties and can be used as a functional ingredient for health care.
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