This OPC oligomeric proanthocyanidins extract comes from Vitis vinifera grape seeds and is standardised to 95% purity, one of the highest concentrations available in the market. Each batch is tested by HPLC and UV techniques for consistent antioxidant efficacy 50 times more powerful than Vitamin E and 20 times more powerful than Vitamin C. It is available as fine brownish-red powder and is ISO 9001, KOSHER and HALAL certified. It is targeted specifically at B2B buyers in the dietary supplement, functional food and premium cosmetics sectors. Ready stock, despatch within 2-3 working days following order confirmation.

|
Product and Batch Information |
|||
|
Product Name: |
Grape Seed Extract |
Latin Name: |
Vitis vinifera |
|
Plant Part: |
Seed |
Manufacture Date: |
2026-05-26 |
|
Batch: |
NT260526001 |
Analysis Date: |
2026-05-28 |
|
Ananlysis: |
1500 Kg |
Report Date: |
2026-05-28 |
|
Analysis Item |
Specification |
Result |
Test Method |
|
Active Ingredeints |
|||
|
Assay Proanthocyanidins |
≥95% |
96.62% |
UV |
|
Physical Control |
|||
|
Appearance |
Brownish Red Powder |
Complies |
Visual |
|
Odor |
Characteristic |
Complies |
Organoleptic |
|
Taste |
Characteristic |
Complies |
Organoleptic |
|
Sieve Analysis |
100% pass 80 mesh |
Complies |
GB/T 5507 |
|
Loss on Drying |
5% Max |
3.69% |
GB 5009.3 |
|
Ash |
5.0% Max |
1.27% |
GB 5009.4 |
|
Tap Density |
≥65.0g/cm3 |
Complies |
GB/T 21354 |
|
Chemical Control |
|||
|
Arsenic (As) |
NMT2ppm |
Complies |
Atomic Absorption |
|
Cadmium(Cd) |
NMT1ppm |
Complies |
Atomic Absorption |
|
Lead (Pb) |
NMT3ppm |
Complies |
Atomic Absorption |
|
Mercury(Hg) |
NMT0. 1ppm |
Complies |
Atomic Absorption |
|
Heavy Metals |
10ppm Max |
Complies |
Atomic Absorption |
|
Pesticides Residues |
NMT 1ppm |
Complies |
Gas Chromatography |
|
Microbiological |
|||
|
Total Plate Count |
1000cfu/g Max |
300cfu/g |
GB4789.2 |
|
Salmonella |
Negative |
Negative |
GB 4789.4 |
|
Yeast & Mold |
100cfu/g Max |
<10 |
GB4789.15 |
|
E.Coli |
Negative |
Negative |
GB 4789.3 |
|
Staphylococcus |
Negative |
Negative |
GB 4789.10 |
This extract is 95% concentrated. It is not the same as grape seed powders of normal grade. This level enables formulators to deliver clinically relevant antioxidant activity with reduced dose footprints – smaller capsules with the same action.
The antioxidant activity of these proanthocyanidins is based on bioflavonoid complexes that aggressively scavenge free radicals. Their molecular framework allows them to pass the blood brain barrier and are excellent for both cognitive health formulations and cardiovascular and anti-aging formulations.
The fine brown-red powder is easily dispersible in aqueous systems as well as in oil systems. This allows for a wide range of product forms from hard capsules and tablets to emulsified skin care serums and functional beverages.

For 95% OPC antioxidant capsules and tablets, this extract is ideal. It combats oxidative stress, supports vascular health, and complements anti-aging supplements.
Functional Foods and Beverages: Its water-compatible dispersion characteristic renders it stable at standard processing temperatures in fortified drinks, wellness shots, and nutraceutical powders.
Premium cosmetics Oligomeric proanthocyanidins protect against UV-induced oxidative damage, reduce wrinkles, and stabilise collagen. This makes the extract a valuable anti-aging serum, lotion, and mask active.
Animal Nutrition: Functional animal feed formulations for oxidative stress reduction and immunological support use natural polyphenolic composition.

HPLC and UV spectroscopy test every batch of OPC oligomeric proanthocyanidins to assure the OPC content fulfils the specified 95% criteria. This dual technique allows both quantitative precision and structural validation of the active molecules.
The quality management system is based on the ISO 9001 standards, including raw material inspection, in-process monitoring and release of finished product. It also has KOSHER and HALAL certifications , which means it meets the highest religious dietary criteria in the world , making it easier to enter the market in different parts of the world .
Traceability of raw material starts from sourcing of grape seeds. A digital manufacturing management system records each production batch from receipt, through processing, testing and final delivery – providing you with total supply chain visibility.
No artificial antioxidants or adulterants have been added. The extract is a natural botanical ingredient prepared to a standard and its purity is checked against a particular polyphenolic profile and not a generic total polyphenol figure.


Store in a cool, dry place, out of direct light and moisture. Recommended storage temperature: 25°C below, relative humidity below 60%.
Once opened, containers should be properly closed to prevent oxidation and absorption of moisture , which may negatively impair the effectiveness of the antioxidants over time . Do not expose the formulation to high temperature for an extended period.
Shelf life under recommended storage conditions is generally 24 months from date of manufacture. Check with your logistics and warehousing personnel on storage conditions before taking bulk quantities.
Standard packing is 25kg/drum, vacuum composite film inner bags, outside fibre drum. Aluminium foil nitrogen-filled bag solutions are available to help protect oxidation during long distance shipping.
Specific regional labelling needs, multilingual packaging or anti-counterfeiting solutions are provided as custom packaging configurations. OEM and ODM services available for trial batch orders and large commercial production runs.
We keep ready stock to facilitate rapid fulfilment. Delivery will be made within 2-3 working days after the order has been confirmed. Depending on your volume and timeframe, you have several shipping alternatives including courier, air freight and ocean freight.

Shaanxi New Things Biotech has a contemporary production base in Xi'an with supercritical fluid extraction systems, molecular distillation units and fully automated production lines. GMP is the foundation of production management at all stages of manufacturing.
The facility has its own R&D centre and Quality Control Centre, including HPLC and GC-MS analytical instruments to help optimise processes and verify products. This means formulation assistance and quality troubleshooting are performed in the same location where your product is manufactured.
Flexible capacity enables kilogram trial batches to full commercial volumes so you may validate formulas before scaling up without changing suppliers.

Q1: What is the confirmed OPC purity level, and how is it verified?
A: Each batch contains a minimum of 95% oligomeric proanthocyanidins, verified by both HPLC and UV testing methods to ensure consistency across every production run.
Q2: Which industries can use this extract?
A: It is suitable for dietary supplements, functional foods and beverages, premium skincare cosmetics, and animal nutrition formulations.
Q3: Does the product hold international certifications?
A: Yes. It carries ISO 9001, KOSHER, and HALAL certifications, supporting compliance across major global markets.
Q4: Can you provide custom packaging or OEM services?
A: Yes. Custom labeling, multilingual packaging, and OEM/ODM manufacturing are all available for both small trial orders and commercial volumes.
Q5: What is the typical lead time?
A: Ready stock is available. Orders are dispatched within 2–3 working days after confirmation.
Q6: How should the product be stored after delivery?
A: Store below 25°C in a dry, dark environment with humidity below 60%. Keep containers sealed tightly after opening to preserve antioxidant activity.
Interested in sourcing high-purity OPC oligomeric proanthocyanidins for your next formulation? Reach out to our team at info@newthingsbiotech.com.