Factory Supply Grape Skin Extract 5% Resveratrol Powder

Resveratrol (grape skin extract) is a naturally occurring polyphenol compound found in a wide range of plants, including grape skin, peanuts, and Japanese knotweed. It is particularly abundant in plants from the Vitaceae and Polygonaceae families. Grape skin extract resveratrol is a stilbene derivative with antioxidant, anti-inflammatory, and lipid-regulating properties. Resveratrol primarily acts as a plant antitoxin, helping plants resist external stressors such as UV rays and pathogens. Research suggests it may have protective effects on cardiovascular health, inflammation, and oxidative stress-related diseases.

Natural Sources and Variations in Content

Resveratrol acts as a "stress response product" in plants; it is synthesized in large quantities to ward off external threats—such as ultraviolet radiation, fungal infections, or mechanical damage—when the plant is under duress. Its primary natural sources include:

Plants of the Grape Family (Vitaceae): The highest concentrations are found in grape skins (reaching 50–100 mg per 100 grams). Due to the prolonged contact between the skins and the pulp during fermentation, red wine contains significantly higher levels of resveratrol than white wine (1–10 mg per liter in red wine, compared to just 0.1–1 mg per liter in white wine).

Medicinal Plants: The rhizomes of *Polygonum cuspidatum* (Japanese knotweed) can contain resveratrol concentrations of 1%–2%, making them a primary medicinal raw material for the extraction of this compound.

Other Food Sources: These include peanuts (approximately 0.1–0.3 mg per 100 grams), blueberries (approximately 0.05–0.1 mg per 100 grams), mulberries (approximately 0.03–0.08 mg per 100 grams), and others.

TEST REPORT

Why Choose YTBIO Resveratrol (Grape Skin Extract)?

Comprehensive Product Line Coverage

We offer not only our 5% Resveratrol (Grape Skin Extract) but also various *Polygonum cuspidatum*-derived resveratrol specifications. Our extensive product range is tailored to suit diverse applications—from dietary softgels and solid beverages to various other scenarios—enabling customers to procure all their raw materials from a single source without the need to manage multiple suppliers.

Rigorous Quality Control

With over a decade of specialized expertise in plant extract manufacturing, our facility holds a full suite of certifications, including cGMP, ISO22000, ISO9001, BRC, Kosher, Halal, and HACCP. We meticulously select premium wine-grade grape skins for extraction, maintaining full traceability and quality control throughout the entire process. Every production batch undergoes comprehensive quality testing to ensure compliance with domestic and international regulatory standards for food, dietary supplements, and cosmetics.

Flexible Ordering & Rapid Fulfillment

We maintain year-round stock availability and are equipped to handle orders of any scale—from small-batch samples for trials to large-volume bulk orders. We offer flexible customization options for packaging specifications and styles to meet specific requirements. With stable and efficient shipping cycles for both domestic and international orders, we reliably support our clients' production schedules and inventory management needs.