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Grape Seed Extract Powder
Product Name: Grape seed extract powder(Natural, Plasticizer qualified, Polyphenolics)
Botanical Source: Vitis vinifera L.
Specification: Proanthocyanidins(OPC)>95%, Polyphenol >80%
Appearance: Brown red fine powder
Test Method: UV
Annual Supply Capacity:More than 100 Tons
Payment terms: TT, D/P, D/A, L/C
Certifications: Halal,ISO9001,PAHS Free,NON-GMO,KOSHER,SC
Delivery term: DHL, FEDEX, Air freight,Sea freight
Description
Grape Seed Extract Powder supplier
Guanjie Biotech is a high-quality Grape Seed Extract Powder supplier. We source our grapes from fresh seeds with no additives. The final product is a pure, brown-red powder. We own and operate two factories covering 7,000 m², which includes a 2,000 m² workshop built to strict GMP standards. Our entire process follows rigorous quality controls and good manufacturing practices. This ensures we consistently deliver a reliable and effective product for our clients worldwide. High-quality and competitive price. Welcome to enquire with us at info@gybiotech.com.

COA
|
Item |
Specification |
Result |
Method |
|
Basic Product Information |
|||
|
Genus and Species |
Vitis vinifera |
Conform |
/ |
|
Part of the Plant |
Seeds |
Conform |
/ |
|
Country of Origin |
China |
Conform |
/ |
|
Marker Compounds |
|||
|
OPC |
>95.0% |
96.24% |
UV |
|
Organoleptic Data |
|||
|
Appearance |
Fine powder |
Conform |
GJ-QCS-1008 |
|
Color |
Red Brown |
Conform |
GB/T 5492-2008 |
|
Odor |
Characteristic |
Conform |
GB/T 5492-2008 |
|
Taste |
Characteristic |
Conform |
GB/T 5492-2008 |
|
Process Data |
|||
|
Method of Processing |
Extraction |
Conform |
/ |
|
Drying Method |
Spray drying |
Conform |
/ |
|
Physical Characteristics |
|||
|
Particle Size (80 mesh) |
98.0%pass 80mesh |
Conform |
GB/T 5507-2008 |
|
Moisture |
<5.0% |
3.6% |
GB/T 14769-1993 |
|
Ash Content |
<4.0% |
3.4% |
AOAC 942.05, 18th |
|
Solvent Residue |
Eur Pharm. |
Conform |
GJ-QCS-1007 |
|
Heavy Metals |
|||
|
Total Heavy Metals |
<10ppm |
Conform |
USP<231>, method II |
|
As |
<1.0ppm |
Conform |
AOAC 986.15, 18th |
|
Pb |
<2.0ppm |
Conform |
AOAC 986.15, 18th |
|
Cd |
<0.5ppm |
Conform |
AOAC 986.15, 18th |
|
Hg |
<0.5ppm |
Conform |
AOAC 971.21, 18th |
|
Pesticide Residue |
|||
|
666 |
<0.2ppm |
Conform |
GB/T5009.19-1996 |
|
DDT |
<0.2ppm |
Conform |
GB/T5009.19-1996 |
|
Microbiology |
|||
|
Total Plate Count |
<1,000cfu/g |
Conform |
AOAC 990.12, 18th |
|
Total Yeast & Mold |
<100cfu/g |
Conform |
FDA (BAM) Chapter 18, 8th Ed. |
|
E. Coli |
Negative |
Negative |
AOAC 997.11, 18th |
|
Salmonella |
Negative |
Negative |
FDA (BAM) Chapter 5, 8th Ed. |
Chromatogram

Flow Chart
As a professional Grape Seed Extract Powder supplier, Guanjie Biotech adheres to rigorous processes to deliver a reliable and high-quality Grape Seed Extract Powder product.
Step 1: Raw Material Preparation
The process begins with cleaning and drying raw grape seeds to remove impurities and moisture, ensuring a pure starting material.
Step 2: Multi-Stage Extraction
The dried seeds undergo exhaustive extraction using 70% ethanol with continuous agitation. This efficiently pulls the beneficial antioxidants from the solid plant matter into a liquid solution.
Step 3: Concentration
The liquid extract is then concentrated by evaporating the solvent under reduced pressure at a controlled temperature of 75°C. This protects the heat-sensitive compounds while creating a more potent liquid.
Step 4: Spray Drying
The concentrated liquid is transformed into a dry powder using a spray dryer. The liquid is misted into a hot chamber (at 90°C), causing instantaneous evaporation of water and leaving behind fine powder particles.
Step 5: Grinding
The spray-dried powder is passed through a shear mill to break down any clumps or larger particles, creating a more consistent base powder.
Step 6: Mixing
The ground Grape Seed Extract Powder is blended in a tumbling mixer to ensure a perfectly uniform and homogenous batch, guaranteeing consistent potency throughout.
Step 7: Sieving
The mixed powder is passed through an 80-mesh sieve to remove any remaining coarse particles, resulting in a fine, smooth, and consistent final powder.
Step 8: Packaging
The finished Grape Seed Extract Powder is packaged for stability and shelf life. It is first sealed in moisture-proof multilayer polyethylene bags as the inner package, which are then placed inside sturdy fibre kraft drums for outer protection.
Step 9: Storage
The packaged drums are stored in a dry, cool place, protected from light and heat to preserve the quality and potency of the grape seed extract powder until use.
Quality Control:
Throughout the process, critical points like extract concentration and drying temperatures are strictly monitored. The final product is tested against specifications to ensure it meets all quality standards for purity and strength.

What is grape seed Extract powder good for?
Grape Seed Extract Powder is a dietary supplement derived from the small seeds of grapes. For centuries, these seeds were a mere byproduct of winemaking. However, science has since uncovered that they are a powerhouse of health-promoting compounds, primarily oligomeric proanthocyanidin complexes (OPCs). In simple terms, antioxidants are molecules that fight "free radicals" in our bodies. Free radicals are unstable molecules that can damage cells, contributing to aging and various diseases. Grape seed extract's high concentration of OPCs makes it a potent tool for supporting overall wellness. Here's a breakdown of its key benefits.
1. Antioxidant Support
The primary and most well-researched role of bulk grape seed extract is its exceptional antioxidant capacity. Its OPCs are significantly more potent than vitamins C and E in neutralizing certain types of free radicals. By combating this oxidative stress, grape seed extract helps protect cells throughout the body from damage. This foundational action supports healthy aging and reduces the risk of chronic illnesses linked to oxidative damage.
2. Promotes Heart and Circulatory Health
Pure Grape seed extract is highly regarded for its cardiovascular benefits. Research indicates it can help:
●Support Healthy Blood Pressure:
Studies suggest that OPCs help relax blood vessels, improving blood flow and thereby supporting the maintenance of blood pressure already within a normal range.
●Protect "Bad" Cholesterol (LDL):
The antioxidants in grape seed extract help prevent LDL cholesterol from oxidizing. Oxidized LDL is a key player in the formation of plaque in artery walls, so protecting it is crucial for long-term arterial health.
●Improve Circulation:
By strengthening capillaries and reducing blood vessel stiffness, Grape Seed Extract Powder can enhance overall circulation.
3. Supports Skin Health from Within
The benefits of natural grape seed extract powder extend visibly to the skin. Its OPCs aid the body in producing collagen and elastin, the two primary proteins responsible for skin's strength, firmness, and elasticity. By protecting existing collagen from breakdown and supporting new collagen formation, grape seed extract can help:
●Reduce the appearance of wrinkles and fine lines.
●Improve skin elasticity and hydration.
●Protect the skin from damage caused by ultraviolet (UV) light exposure.
4. Helps Reduce Swelling and Improves Venous Health
For individuals who experience leg swelling, varicose veins, or chronic venous insufficiency, grape seed extract may offer relief. Its anti-inflammatory properties and its ability to strengthen blood vessel walls can help reduce fluid retention (edema) and alleviate feelings of heaviness and discomfort in the legs.
5. Potential Cognitive and Joint Support
Emerging research points to other promising areas. The same antioxidant and anti-inflammatory mechanisms that benefit the heart and skin also support brain and joint health. By improving blood flow to the brain and protecting nerve cells, it may support cognitive function. Similarly, by reducing inflammation and protecting joint tissues, Grape Seed Extract Powder can contribute to greater comfort and mobility.
Why Choose Us?
- We stand apart by uniting global capabilities with academic excellence. Our strategic warehouse in New Jersey, USA, ensures swift logistics, supported by competitive pricing and our experienced shipping agents.
- We specialize in customization, tailoring products to your precise specifications. Our commitment to the highest standards is verified by key certifications, including ISO9001, ISO22000, Kosher, and Halal.
- Furthermore, our unique collaboration with the School of Chemistry and Materials Science at Northwest University provides a practical base for Master's students. This partnership fuels innovation, ensuring we remain at the Grape Seed Extract Powder product development and quality control for a reliable partnership.

Our factory:
Guanjie factory covers an area of 7000㎡, including GMP standard workshop of 2000㎡ and advanced lab of 500㎡.

Product Qualification
Grape Seed Extract Powder is produced in a clean working environment and every step of the process is conducted by highly qualified professionals.

Testing Center:
Both the production processes of manufacture and the product itself meet all international standards. And if you need our grape seed extract powder testing report, we can provide you.

Certification:
Our factory and lab passed ISO9001, ISO22000, IP(non-GMO), QS, Kosher, Halal etc.

Package&Warehouse:

Shipment:
Multiple shipping method for your choose: FEDEX, DHL, TNT, UPS, SHIPMENT BY AIR &SEA;

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