Product Introduction: 98% Grape Seed Extract
1. Product Overview
Grape Seed Extract is a natural botanical extract refined from the mature seeds of the grape plant (*Vitis vinifera* L.) using modern extraction and separation processes. Its primary active ingredient is **Oligomeric Proanthocyanidins (OPC)** , which is one of the most potent antioxidants of plant origin discovered to date.
This product is standardized to **98% proanthocyanidins**, featuring high purity, strong activity, and stable quality. It is widely used in dietary supplements, cosmetics, and pharmaceuticals.
2. Basic Product Information
- Chinese Name: Grape Seed Extract, Proanthocyanidins, Grape Fruit Extract
- English Name: Grape Seed Extract, Grape Seed P.E., GSE
- CAS Number: 84929-27-1
- Specification: 98% (Proanthocyanidins, determined by UV)
- Botanical Source: Seeds of *Vitis vinifera* L. (Vitaceae)
- Main Components: Proanthocyanidins (OPC), catechin, epicatechin, gallic acid, and other polyphenols
3. Physical and Chemical Properties
- Appearance: Reddish-brown to deep rose-red fine powder, slight odor, astringent taste
- Solubility: Freely soluble in water and aqueous ethanol
- Particle Size: 100% passes through an 80-mesh sieve
4. Key Functions and Benefits
Grape seed extract is one of the most powerful antioxidants in nature. Its core efficacy is derived from the super free radical scavenging ability of proanthocyanidins:
- Powerful Antioxidant Activity: The antioxidant effect of proanthocyanidins is 20 times that of vitamin C and 50 times that of vitamin E, effectively scavenging excess free radicals and delaying cellular aging.
- Cardiovascular Health: Enhances the elasticity and resistance of blood vessel walls, improves microcirculation, and helps prevent cardiovascular diseases such as arteriosclerosis and heart disease.
- Skin Protection & Beauty: Known as the "oral skin cosmetic." It protects collagen and elastin fibers, enhances skin elasticity, reduces wrinkles, provides whitening and moisturizing benefits, and fades dark spots.
- UV Protection: Acts as a natural sun shield, blocking ultraviolet damage to the skin and reducing skin cell injury.
- Immune Regulation: Boosts immunity, fights fatigue, and improves suboptimal health conditions.
- Eye Health: Protects the retina, relieves eye strain, and helps prevent age-related eye degeneration.
- Anti-allergic & Anti-inflammatory: Exhibits certain anti-allergic and anti-inflammatory activities.
5. Technical Specifications (Reference Standards)
Test Item Specification
Proanthocyanidins Content ≥98% (UV)
Appearance Reddish-brown powder
Loss on Drying ≤5.0%
Ash Content ≤5.0%
Total Heavy Metals ≤10 ppm
Arsenic (As) ≤1 ppm
Lead (Pb) | ≤2 ppm
Mercury (Hg) ≤0.1 ppm
6. Packaging and Storage
- Packaging Specifications: Double-layer plastic bags inside, fiber drum outside (25 kg/drum); 1 kg aluminum foil bags are also available upon customer request.
- Storage Conditions: Keep tightly sealed, protected from light. Store in a cool, dry, well-ventilated area. Avoid direct sunlight and high temperatures.
- Shelf Life: 24 months (under original packaging conditions).