Grape Seed Extract
Antioxidants
Nutritional Enhancers
Fruit & Vegetable Powders
84929-27-1
C₃₂H₃₀O₁₁
$10.26 ~ $15.39
Food
Free sample from 100g(NF)
One unit of:25kg/barrel
One unit of:25kg/barrel
25kg/barrel
Product Info
What is Grape Seed Extract?
Grape Seed Extract is a food additive and dietary supplement derived from crushed grape seeds, valued for its high concentration of antioxidant phenolic compounds, particularly proanthocyanidins, and is primarily used to provide health benefits and function as a natural preservative.
How is Grape Seed Extract made?
| Step No. | Production Stage | Key Action | Control Point & Note |
|---|---|---|---|
| 1 | Raw Material Reception | Receive, inspect, and select fresh grape seeds. | Source Verification: Seeds are typically a byproduct of the wine or juice industry. Must be from approved, pesticide-controlled sources. Inspect for mold, foreign matter, and excessive pulp. |
| 2 | Cleaning & Drying | Wash seeds to remove residual sugars and pulp, then dry them to a low moisture level. | Moisture Content Control: A critical step to prevent microbial growth and degradation. Target moisture is typically below 8%. Low-temperature drying methods are preferred to preserve active compounds. |
| 3 | Crushing / Milling | Grind the dried seeds into a coarse powder or flake. | The particle size directly impacts extraction efficiency. A consistent, fine grind increases the surface area, but excessive heat during milling must be avoided to prevent oxidation. |
| 4 | Solvent Extraction | Extract the active compounds (proanthocyanidins) from the crushed seeds using a solvent. | Key parameters are solvent type (e.g., water, ethanol, or a mixture), temperature, and duration. These variables determine the yield and profile of the extracted polyphenols. Food-grade solvents are mandatory. |
| 5 | Filtration & Concentration | Separate the liquid extract from the solid seed residue, then concentrate the liquid by removing the solvent. | Multi-stage filtration ensures a clear extract. Concentration is performed under vacuum at low temperatures to prevent thermal degradation of the heat-sensitive active compounds. |
| 6 | Purification | Further purify and standardize the concentrated extract. | Often involves techniques like column chromatography to isolate and enrich the proanthocyanidins. This step is crucial for achieving high-purity, standardized extracts (e.g., 95% Oligomeric Proanthocyanidins - OPCs). |
| 7 | Spray Drying | Convert the purified liquid concentrate into a fine, stable powder. | Control of inlet and outlet air temperature is essential to protect the final product's quality. This step determines the powder's bulk density, solubility, and moisture content. |
| 8 | Sieving & Blending | Sieve the powder to ensure a uniform particle size and blend different production lots for homogeneity. | A specific mesh size is used to meet final product specifications. Batch homogeneity testing ensures consistent potency and quality throughout the final product. |
| 9 | Final Quality Control & Packaging | Conduct comprehensive laboratory tests on the final powder and package it. | Test for potency (HPLC), identity, heavy metals, microbial contamination, and residual solvents. Package in airtight, light-proof, and moisture-proof containers to ensure stability. |
Technical Specifications
| CAS Number | 84929-27-1 |
| Chemical Formula | C₃₂H₃₀O₁₁ |
| Solubility | Soluble in DMSO (~6 mg/mL); partially in water |
| Storage Conditions | Cool, dry, <25 °C, protected from light |
| Shelf Life | 36 Months |
Applications & Usage
Common Applications:
Dietary supplements
functional foods
cosmetics
oral care
Mechanism of action:
| Parameter | Grape Seed Extract |
|---|---|
| Functional Category | Antioxidant; Natural Preservative; Color Stabilizer; Flavor Enhancer |
| Key Ingredients | Proanthocyanidins (including oligomeric proanthocyanidin complexes, OPCs); Catechin; Epicatechin; Gallic Acid |
| Mechanism of Action | Acts as a potent free radical scavenger, donating hydrogen atoms to neutralize reactive oxygen species (ROS) and terminate oxidative chain reactions. Chelates pro-oxidant metal ions (e.g., Fe2+, Cu2+), preventing them from catalyzing lipid peroxidation. Inhibits enzymes such as polyphenol oxidase (PPO) and lipoxygenase, which are responsible for enzymatic browning and off-flavor development. |
| Application Effect in Product | Extends shelf life by significantly delaying lipid oxidation and rancidity in high-fat products (e.g., meats, oils, baked goods). Stabilizes natural pigments and prevents discoloration in beverages, fruits, and vegetables. Reduces the formation of warmed-over flavor in reheated meat products. Can contribute a mild astringent or bitter note, enhancing flavor complexity in certain applications. |
Comparison:
| Product Name | Category/Type | Key Features | Strengths (vs peers) | Weaknesses (vs peers) | Best Use Cases | Why Choose |
|---|---|---|---|---|---|---|
| Grape Seed Extract | Polyphenol Supplement (Proanthocyanidins) | High concentration of Oligomeric Proanthocyanidin Complexes (OPCs); antioxidant; supports circulation. | Generally the most cost-effective source of OPCs; widely available; well-researched for vascular health. | Quality and OPC content can vary significantly between non-standardized brands. | Supporting healthy circulation and blood pressure, protecting collagen for skin health, general antioxidant defense. | For a powerful and affordable antioxidant focused specifically on blood vessel and skin tissue integrity. |
| Pycnogenol® (French Maritime Pine Bark Extract) | Patented Polyphenol Supplement (Proanthocyanidins) | Standardized extract of proanthocyanidins, bioflavonoids, and organic acids from pine bark. | Extremely well-researched with consistent, standardized quality; broader range of studied benefits (joints, skin, cognition). | Significantly more expensive than Grape Seed Extract. | When guaranteed potency is critical; addressing multiple concerns like circulation, joint health, and skin elasticity. | When you need a premium, clinically-validated proanthocyanidin source and budget is not the primary constraint. |
| Green Tea Extract | Polyphenol Supplement (Catechins) | High in catechins, especially Epigallocatechin gallate (EGCG); supports metabolism. | Strong research supporting metabolic health and fat oxidation; widely studied for cellular protection. | High doses of EGCG can be stressful to the liver; quality varies based on standardization. | Supporting weight management goals, enhancing metabolic rate, general antioxidant for cellular health. | For a focus on metabolic health and the specific, potent antioxidant benefits of EGCG. |
| Resveratrol | Polyphenol Supplement (Stilbenoid) | Specific compound (trans-resveratrol) linked to cellular health and longevity pathways (sirtuins). | Uniquely studied for its effects on aging pathways; strong cardiovascular research. | Often has low bioavailability unless specifically formulated; benefits are highly dose-dependent. | Supporting healthy aging at a cellular level, cardiovascular protection, mimicking effects of caloric restriction. | When the primary goal is targeting cellular longevity pathways rather than just general antioxidant support. |
| Curcumin (from Turmeric) | Polyphenol Supplement (Curcuminoid) | Potent anti-inflammatory and antioxidant properties from the primary active compound in turmeric. | Its anti-inflammatory action is arguably stronger and more direct than most other plant-based antioxidants. | Very poor bioavailability; must be combined with an enhancer like piperine (black pepper) to be effective. | Managing inflammation-related issues, supporting joint health and comfort, general wellness. | When addressing inflammation is the main priority, as its effects in this area are superior. |
| Bilberry Extract | Flavonoid Supplement (Anthocyanins) | Standardized to a high percentage of anthocyanins; traditionally used for vision. | Specific and strong evidence for supporting eye health, particularly night vision and retinal function. | Benefits are more specialized to vision and microcirculation compared to the broad effects of GSE. | Supporting visual acuity, reducing eye strain, and improving circulation in small capillaries (e.g., in the eyes). | When supporting eye health is the main goal, leveraging its potent, vision-focused anthocyanins. |
Technical Documents
Available Documentation
Technical datasheet & COA provided
Safety Data Sheet (SDS)
SDS available
Certificate of Analysis (COA)
Quality assurance documentation
Technical Data Sheet
Detailed technical specifications