Polygonum Cuspidatum Root Extract (Resveratrol 98%)
Miasto: LV, Marupe
Please avoid sudden changes in temperature and humidity, as they may affect the condition of derivative ingredients and tablets.
The shelf life begins from the date of manufacture at the factory.
Taking into account logistical and transportation stages, the remaining shelf life of the product is always shorter than the full shelf life.
We ship products to our customers with a remaining shelf life of no less than 70%.
Physical & Chemical Characteristics
Analysis Item | Specification | Result |
Appearance | Off white to white powder | Complies |
Odor | Characteristic | Complies |
Taste | Characteristic | Complies |
Loss on drying | ≤2.0% | 0.88% |
Ash | ≤1.0% | 0.19% |
Loose density | 0.200–0.700 g/ml | Complies |
Tapped density | 0.300–0.800 g/ml | Complies |
Particle size | 100% pass 80 mesh | Complies |
Chemical Tests
Analysis Item | Specification | Result |
Heavy metals (total) | ≤10 ppm | Complies |
Arsenic (As) | ≤2 ppm | Complies |
Lead (Pb) | ≤2 ppm | Complies |
Cadmium (Cd) | ≤0.5 ppm | Complies |
Mercury (Hg) | ≤0.1 ppm | Complies |
Solvent residual | ≤1500 ppm | Complies |
Benzo(a)pyrene | ≤10 ppb | Complies |
Sum of PAHs (PAH4) | ≤50 ppb | Complies |
Assay: Resveratrol | ≥98.0% (HPLC) | 98.67% |
Microbiological Tests
Analysis Item | Specification | Result |
Total plate count | ≤1000 CFU/g | <10 CFU/g |
Yeast & mould | ≤100 CFU/g | <10 CFU/g |
Coliforms | ≤0.92 MPN/g | Negative |
Salmonella | Negative | Negative |
Packaging & Storage
Analysis Item | Specification |
Packing | Paper-drums with two food grade poly bags inside; Net: 25 kg/drum |
Storage condition | Sealed, kept in a shady & dry place |
Shelf life | Three years when properly stored |