black grape seed powder

Black Grape Seed Powder — 95% OPC Extract for Dietary Supplements & Functional Formulations

Black Grape Seed Powder from Shaanxi New Things Biotech is a premium botanical ingredient made from Vitis vinifera black grape seeds and is standardised to 95% Oligomeric Proanthocyanidins (OPC) through HPLC and UV testing. It is supplied in a characteristic brown-red to purple-red fine powder and provides antioxidant activity 20× that of Vitamin E and 50× that of Vitamin C. It is ISO 9001, KOSHER and HALAL certified and dispatched in 25 kg drums within 2-3 working days after order confirmation – a reliable choice for global supplement, cosmetic and functional food brands.

Product Specifications

Product Characteristics & Bioactivity

This extract provides reliable, quantifiable antioxidant activity across a variety of formulation forms at 95% OPC content. The low-molecular-weight proanthocyanidins have improved free-radical scavenging activity, which is directly beneficial to therapeutic and clean-label applications.

The OPC profile of this substance is characterised by B-type procyanidins specific to Vitis vinifera seeds. This separates it from adulterants like peanut skin extract or pine bark extract. The remaining anthocyanins from black varietal processing further contribute to the polyphenolic complexity above and beyond typical grape seed extracts.

The fine, spray-optimized powder is easy to dissolve in acidic settings (pH 3.0–4.0) and is suited for ready-to-drink beverages without sedimentation. It works as a natural stabiliser in lipid rich matrices and 100–200 ppm of this extract has been reported to have antioxidative efficacy comparable to synthetic antioxidants such as BHT.

Application Scenarios 

Cardiovascular & Venous Health Supplements

High-OPC formulations are often utilised in capsules (300 mg+) for Chronic Venous Insufficiency (CVI). The OPC content adds strength to capillary walls, decreases vascular permeability, and augments the actions of Vitamin C and bioflavonoid complexes without any degradation of the ingredients.

Functional Cosmetics & Care of Skin

This extract also inhibits the enzymes collagenase and elastase, included in anti-aging serums and sun-care products, helping to retain the skin’s suppleness and reduce oxidative damage. It also stabilises organic emulsion lipid phases for extended shelf life without synthetic preservatives .

Sports Nutrition & Functional Beverages

In pre-workout and RTD formulas, the micronized powder helps nitric oxide generation and blood flow. Its natural astringency also helps hide the taste of high intensity sweets in acidic beverage systems.

Quality Assurance and Safety

Quality control starts with the reception of black grape seed powder raw materials and goes on at every stage of manufacturing. Each batch is checked by HPLC and UV techniques for OPC content to ensure that the 95% criteria is always satisfied.

Identity verification is performed by specialised flavonoid profiling to ascertain 100% Vitis vinifera provenance. Heavy metal testing using ICP-MS methodology: Lead < 3.0 mg/kg, Arsenic < 1.0 mg/kg, Mercury < 0.1 mg/kg. Total Plate Count: Microbial restrictions are restricted to < 1,000 CFU/g.

Solvent residue is closely controlled. Ethanol use less than 5,000 ppm and without methanol or acetone in extraction. The product is certified with ISO 9001, KOSHER and HALAL to comply with global regulatory and market access criteria.

Storage and Handling Guidelines

Store in a cool, dry, and dark environment, away from direct sunlight, moisture, and heat sources. The ingredient is highly hygroscopic — once opened, reseal immediately to prevent clumping and oxidative darkening.

Properly sealed and stored, the product maintains a shelf life of 36–48 months. Vacuum sealing is strongly recommended for long-term storage. Keep away from strong-smelling materials to avoid cross-contamination.

Packing and Delivery

Standard packaging is 25 kg per drum using vacuum composite film inner bags with nitrogen flushing to protect active content during transit. Custom packaging options — including aluminum foil nitrogen-filled bags and light-resistant containers — are available upon request.

Ready stock is maintained for prompt dispatch. Orders are typically shipped within 2–3 working days after confirmation. Shipping methods include courier, air freight, and ocean freight depending on your order volume and destination.

Our Factory

Shaanxi New Things Biotech operates a modern GMP-compliant production base in Xi'an, China. The facility integrates supercritical fluid extraction, molecular distillation, and automated production lines — supporting everything from kilogram-scale trials to large commercial batches.

A digital manufacturing management system ensures full traceability from raw material intake to finished product delivery. The in-house R&D and Quality Control Centers use HPLC and GC-MS analytical platforms to support both routine testing and custom formulation development.

OEM and ODM services are available, covering powders, liquids, and soft capsules — with customized labeling, multilingual packaging, and anti-counterfeiting solutions.

FAQ

Q1: How is the 95% OPC specification verified?

A: Each batch is tested using both HPLC and UV methods. This dual-method approach confirms OPC content accurately, distinguishing active proanthocyanidins from non-active tannins that can inflate total polyphenol readings.

Q2: How do you confirm the raw material is 100% grape seed and not adulterated?

A: We use HPLC flavonoid fingerprinting to identify B-type procyanidins specific to Vitis vinifera. This rules out A-type procyanidins found in peanut skins or pine bark substitutes.

Q3: Is this ingredient suitable for halal and kosher-certified products?

A: Yes. The product holds both HALAL and KOSHER certifications, along with ISO 9001, making it compliant for global supplement, functional food, and cosmetic markets.

Q4: What is the minimum order and lead time?

A: Ready stock is available in 25 kg drums. Orders are dispatched within 2–3 working days after confirmation. Trial quantities are also supported for formulation testing.

Q5: Can it be used to replace synthetic antioxidants in food systems?

A: Yes. At 100–200 ppm, this grape seed extract provides equivalent antioxidative protection compared to synthetic options like BHT in lipid-containing food matrices.

Q6: Is custom packaging or private labeling available?

A: Yes. We offer full OEM/ODM services including custom packaging sizes, private labeling, multilingual print, and nitrogen-flushed sealed packaging to protect product integrity.

Contact Us

Do you have more questions about black grape seed powder? Reach out to our team at newthingsbio@163.com — we respond within one business day.