Grape Seed Extract

Vitis Vinifera L. General GSE
≥95% Proanthocyanidins (Beta-Smith UV)
≥95% Proanthocyanidins (Beta-Smith UV)
≥75% OPCs (USP38)
ORAC ≥ 15000 μmole TE/g (Brunswick Lab)

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Product Name Grape Seed Extract
Used Part Seed
Appearance Red Brown Powder
Odor &Taste Characteristic
Test Method UV
Specification ≥95% Proanthocyanidins
≥75% OPCs
Active Ingredient Proanthocyanidin
CAS# 18206-61-6
Molecular Formula C31H28O12
Molecular Weight 592.56
Structure  18206-61-6.PNG

Physical Characteristics
Sieve Analysis NLT 100% pass 80 mesh
Loss on Drying ≤4.0%
Ash Content ≤2.0%
Residual Solvents
Ethanol ≤5000ppm
Total Heavy Metals ≤20ppm
Pesticide Residues ≤10ppb
Microbiological Assay
Total Plate Count 1000cfu/g
Total Yeast & Mold 100cfu/g
E.Coli Negative
Salmonella Negative
Staphylococcus Negative








1. Anti-aging & decrease cancer risk;

2. Reduces risk of clogged arteries and helps control blood pressure;

3. Possible anti-disease property as would healing: protect cells from damage and may help prevent many diseases;

4. Reduces swelling caused by injury and helps with eye disease related to diabetes.


1.Natural color

2.Nutraceutical ingredients

3.Cosmetics field

4.Healthcare products


  • Delivery Time: Around 3-5 workdays after your payment.
  • Package: In fiber-drums with two-plastic bags inside.
  • Net Weight: 25kgs/Drum / Gross Weight: 28kgs/Drum
  • Drum Size & Volume: I.D.42cm × H52cm, 0.08 m³/ Drum
  • Storage: Stored in dry and cool place, keep away from strong light and heat.
  • Shelf Life: Two years when properly stored.


  • 1, DHL Express, FedEx and EMS for the quantity less than 50KG, usually called as DDU service;
  • 2, Sea shipping for quantity over 500KG; and air shipping is available for 50KG above;
  • 3, For high value products, please select air shipping and DHL express for safe;
  • 4, Please confirm if you can make the clearance when goods reach your customs before placing an order,
  •  for buyers from Mexico, Turkey, Italy, Romania, Russia, and other remote areas.

1. What is MOQ (minimum order quantity) order with PuroNature?
Shipping by Air: MOQ is 1kg per shipment.
Shipping by Sea: MOQ is 25kg per shipment.
(It depends on what products also, please contact us for details).
2. How can we get samples for lab test from PuroNature?
PuroNature is very glad to provide clients with 5g-20g free samples for lab testing, along with the original COA.
3. How can I pay for my orders to PuroNature?
We accept payment by T/T (bank wire), L/C. You could also use Western Union or PayPal for small amount payment.
4. How long is the delivery time?
Usually, we will arrange the shipment within 3~15 days.
If stock specifications 1~2 days, if OEM products, we will manufacture the products according to your specifications and requests.
5. How about the packing?
Usually with 25 kg bag/carton/drum.
6. How about the validity of the products?
Usually 2 or 3 years.
7. What is the loading port?
Usually, Qingdao, Tianjin and Shanghai
8. What documents do you provide?
Usually, Commerical Invoice, Packing List, Country of Origin, Insurance Policy, Bill of loading, COA , Health certificate.
9. What third party inspection do PuroNature work with?
PuroNature QC team also work with the third party inspection, such as SGS, China Inspection Bureau, China National Plant Resource Function Engineering Center, etc.
10. Could PuroNature provide us formula design assistance?
Yes, we not only supply Botanic/Plant extracts, but also we provide formula design services, contract manufacturing and Natural ingredients applications solutions.

Grape Seed extract is rich in Oligomers Procyanidin Complexes (OPC) , which is a powerful antioxidant. In addition to the ultra rich potence of over 20 times higher than Vitamin C. Grape seed extract is also 50 times better than Vitamin E. Grape seed extract helps to strengthen the immune system, and also slow down the aging process, which is of very high market value. Procyanidin B2, which is the most active compound to neutralize free radicals that cause aging, is available only in Grape Seed.


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