Wholesale Natural Bulk Resveratrol Powder
Premium Natural Grape Seed/Skin Extract Resveratrol Powder for Sale
KINTAI, a trusted herbal extract manufacturer in China with ISO, GMP, and HACCP certifications, offers high-quality best Resveratrol powder extracted from grape seeds and skins. Our facility adheres to strict GMP standards, and every batch undergoes 100% quality control (QC) testing before shipment to ensure exceptional purity and performance.
Whether you need bulk quantities or a reliable supplier, we provide top-grade Resveratrol for use in nutraceuticals, cosmetics, and pharmaceuticals. Contact us today for competitive pricing and premium quality!what is resveratrol
Resveratrol is a natural polyphenolic compound mainly found in grape skins, grape seeds, red wine, and certain plants such as Polygonum cuspidatum. It is a potent antioxidant known for its anti-aging, anti-inflammatory, and cardiovascular protective effects. Resveratrol is widely used in the fields of health products, pharmaceuticals, and cosmetics. Because the content of resveratrol in plants is very low and the extraction cost is high, most products on the market are synthesized by chemical methods, which makes them more competitive in price.
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cGMP KINTAI factory supply
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Best natural source of Resveratrol extract powder
Chemical & Physical Properties
| CAS Number | 501-36-0 | Density | 1.359±0.06 g/cm3 (Predicted) |
|---|---|---|---|
| Molecular Formula | C14H12O3 | Molecular Weight | 228.24 |
| Melting Point | 253-255 ℃ | Boiling Point | 449.1±14.0 ℃ (Predicted) |
| Solubleness | Soluble in DMSO (up to 25mg/ml) or ethanol (up to 20mg/ml). | Test Method | HPLC |

Physical and Chemical Properties
| Product name | Resveratrol Extract powder |
|---|---|
| Extraction Solvent | Ethanol |
| Appearance | White Fine powder |
| Solubility | Insoluble in water, easily soluble in organic solvents such as ether, methanol, acetone, ethyl acetate, etc. |
| Identification | HPLC |
| Heavy metals | NMT 20 PPM |
| Loss On Drying | NMT 5.0% |
| Powder size | 80Mesh, NLT90% |
| Assay | Min. 95.0% |
| Residual Solvents | |
| - Ethanol | NMT 5000 PPM |
| Microbiological Quality (Total viable aerobic count) | |
| - Bacteria, CFU/g, not more than | NMT 10³ |
| - Moulds and yeasts, CFU/g, not more than | NMT 10² |
| - E.coli, Salmonella, S. aureus, CFU/g | Absence |
| Storage | In a Tight, Light-resistant, and Dry Place. Avoid Direct Sunshine. |
| Shelf life | 24 months |
when is the best time to take resveratrol
The best time to take resveratrol is in the morning and evening. But we can also adjust our time according to our own habits, hobbies, and physical condition.
Resveratrol benefits
Antioxidant: Resveratrol can clear free radicals, inhibit the generation of reactive oxygen species (ROS), protect cells from free radical damage, reduce oxidative stress, and thus delay the aging of organisms.
Anti-aging: Resveratrol helps promote collagen synthesis and epidermal cell proliferation. Therefore, it can maintain skin elasticity and firmness, slow skin sagging and wrinkle appearance, and play an anti-aging role.
Skin-whitening: Pure resveratrol extract from natural plants can inhibit tyrosinase activity and reduce the formation of melanin.
Antibacterial and anti-inflammatory: It has good antibacterial effects on Pseudomonas aeruginosa, Shigella flexneri, and Prevotella reinhardtii, and can also inhibit inflammatory reactions.
Anti-UV: The best source resveratrol has a photoprotective effect against UV.
Skin moisturizing: Resveratrol extract helps increase the stratum corneum's moisture content, improve the skin's moisturizing, therefore make the skin look fuller and more lustrous.

Why choose Resveratrol powder by Kintaibio®?
1. We own a Polygonum cuspidatum plantation where the plants are grown 100% naturally, without any additives.
2. We provide customized extraction solutions to produce Resveratrol powder in various specifications tailored to your requirements.
3. Our production facilities hold internationally recognized certifications including GMP, ISO 9001, ISO 22000, HACCP, KOSHER, and HALAL, guaranteeing the highest standards for your peace of mind.















