Grape Seed Extract
Botanical Source: Vitis vinifera L.
Part Used: Seed
CAS No.: 84929-27-1
Appearance: Red-brown fine powder
Specifications: Polyphenols 95%
Proanthocyanidins OPC 95%, 98%
Main Chemical Composition of Grape Seed Extract
The major functional composition in grape is grape polyphenol including proanthocyanidins. Besides, there are some other ingredients, like glucose, fructose, sucrose, xylose, tartaric acid, oxalic acid, citric acid, malic acid and single glucoside & glucobioside of all kinds of anthocyanidin.
Polyphenols
There are mainly 4 kinds of polyphenol substances in grape: Tannin, anthocyanidin, phenolic acid and flavonoids. The vital polyphenols in grape is the same kind as flavonoids type, including flavane-3, 4-diol, flavonoids tannin, flavonoids, flavonol, flavanol, chalcone and anthocyadin, etc. Anthocyanidins in grape are mainly as anthocyanin, methyle anthocyanin, petunidin, malvin and dephinidin, existing in common by dimmer or bigger molecule. The composition of flavonol kind in grape is major for quercetin in ordinary form. Proanthocyanidins are major ingredients in grape seed & grape skin, also the most kind in polyphenol content, mainly existing by dimer or polymer form.
Functions:
Antioxidant Effect
The antioxidant capacity of Grape Seed ( skin ) Extract comes from proanthocyanidins ( OPCs ). With an antioxidant power 20 times stronger than Vitamin C and 50 times stronger than Vitamin E, OPCs is known as a powerful antioxidant to neutralize free radicals, which play a major role in degenerative diseases, cardiovascular diseases, impaired vision, sun damage and premature aging.
| Product Name |
Grape Seed Extract |
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| Botanical Source |
Vitis vinifera L |
Batch Quantity |
1075kgs |
| Plant Parts Used |
Seed,100% Natural |
Country of Origin |
China |
| Type of Products |
Standard Extract |
Active Ingredient Markers |
Proanthocyanidins |
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| Analysis Items |
Specifications |
Results |
Methods used |
| Identification |
Positive |
Conforms |
TLC |
| Appearance |
Fine Reddish Brown Powder |
Conforms |
Visual test |
| Odor & Taste |
Characteristic, Astringent & Bitter |
Conforms |
Organoleptic test |
| Bulk Density |
35-55g/100ml |
Conforms |
ASTM D1895B |
| Particle Size |
NLT 98% through 80 Mesh |
Conforms |
AOAC 973.03 |
| Solubility |
Good solubility in Water |
Conforms |
Visual |
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| Assay |
NLT 95% Proanthocyanidins |
95.61% |
UV(Beta-smith) |
| Extract ratio |
about 25:1 |
24.6:1 |
seed to dry extract, W/W |
| Loss on Drying |
NMT 5.0% |
3.70% |
5g /105ºC /2hrs |
| Ash Content |
NMT 5.0% |
1.70% |
2g /525ºC /3hrs |
| Extract Solvents |
Ethanol & Water |
Conforms |
/ |
| Solvent Residues |
NMT 0.01% |
Conforms |
GC |
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| Heavy Metals |
NMT 10ppm |
Conforms |
Atomic Absorption |
| Arsenic (As) |
NMT 1ppm |
Conforms |
Atomic Absorption |
| Lead (Pb) |
NMT 2ppm |
Conforms |
Atomic Absorption |
| Cadmium (Cd) |
NMT 0.5ppm |
Conforms |
Atomic Absorption |
| Mercury(Hg) |
NMT 0.2ppm |
Conforms |
Atomic Absorption |
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| BHC |
NMT 0.1ppm |
Conforms |
USP-GC |
| DDT |
NMT 0.1ppm |
Conforms |
USP-GC |
| Acephate |
NMT 0.2ppm |
Conforms |
USP-GC |
| Methamidophos |
NMT 0.2ppm |
Conforms |
USP-GC |
| Parathion-ethyl |
NMT 0.2ppm |
Conforms |
USP-GC |
| PCNB |
NMT 0.1ppm |
Conforms |
USP-GC |
| Aflatoxins |
NMT 0.2ppb |
Absent |
USP-HPLC |
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| Sterilization Method |
High temperature & pressure for a short time of 5~10 seconds |
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| Microbiological Data |
Total Plate Count < 10,000cfu/g |
Conforms |
GB 4789.2 |
| Total Yeast & Mold < 1,000cfu/g |
Conforms |
GB 4789.15 |
| E. Coli to be absent |
Absent |
GB 4789.3 |
| Staphylococcus to be absent |
Absent |
GB 4789.10 |
| Salmonella to be absent |
Absent |
GB 4789.4 |
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| Packing and Storage |
Packed in fiber drum, LDPE bag inside. Net weight: 25kgs/drum. |
| Keep tightly sealed, store away from moisture, strong heat and sunlight. |
| Shelf Life |
2 years if sealed and stored in the recommended conditions. |
Skin Care
KINGHERBS' Grape Seed Extract OPCs is thought to prevent the skin from excessive UV radiation and free radicals. Considerable evidences indicate that OPCs protect and strengthen collagen and elastin of the skin, so that wrinkles are prevented and elasticity of the skin is kept. It has the efficacy of firming skin, crease resisting and freckle curing, to make skin smooth, exquisite and be full of flexibility.
The Grape Seed Extract has already become one of the top ten salable natural plant extract products and owns the reputation of "natural health care product" and "orally cosmetics" in America.
Preventing and Curing Cardiovascular Diseases
Researches have assured that OPCs helps strengthen capillaries, arteries and veins, which endows it several important clinical applications. OPCs appears to stabilize the walls of blood vessels, reduce inflammation, and generally support tissues containing collagen and elastin. OPCs not only can relieve or repair arteriosclerosis, but also relieve pain and oedema of venous insufficiency, through strengthening capillary and dropping permeability of capillary. Being effective against oedema that often follows injury or surgery, OPCs has been proved to effectively improve pathological changes in retina caused by diabetes, arteriosclerosis, inflammation and aging. For the same reason, it has been reported that OPCs can speed vision recovery after strong light, and improve vision acuity of those who suffer from eye fatigue due to long-time computer using.
Characteristic:
- We can also customize orders as customer's requirements and specifications.
- KINGHERBS' is specialized in manufacturing and exporting different kinds of food industry related goods, such as Inulin (90% or 98%), Myricetin, Sea Buckthorn Oil, Green Coffee Bean Extract Total Chlorogenic Acids, Fenugreek Seed Extract Furostanol Saponins 50% etc.
- With the effective exporting system and prompt reaction, we ensure that we can transfer the shipping documents and deliver our cargos on time.
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