|Product Name:||Grape Seed Extract||Latin Name:||Sambucus Nigra L.|
|Ingredients:||Polyphenols 10%-60%||Part Used:||Skin|
|Color:||Red-Brown||Shelf Life:||24 Months|
|Test Method:||HPLC/UV||Application:||Health Care Supplement|
HPLC grape skin extract powder,
Proanthocyanidins 95% grape skin extract powder,
Polyphenols 70% sambucus powder
Natural Antioxidant Grape Skin Extract Powder Red Wine Polyphenols
What is Grape Seed Extract?
The grape seed extract is a new type of highly effective natural antioxidant substance extracted from grape seeds that cannot be synthesized in the human body. It is the strongest antioxidant and free radical scavenger found in nature, with 50 times more antioxidant activity than vitamin E and 20 times more antioxidant activity than vitamin C. It can effectively scavenge excess free radicals in the body and has a superb effect of delaying aging and enhancing immunity.
Grape Seed Extract
Sambucus nigra L.
6. Vasodilatory effect
1. Drug development
2. Cosmetic development
3. Health product development
This method determines the content of each monomer, oligomer, and homopolymer in the extract. However, due to the limitations of the control and the analytical means, only the content of monomers and some oligomers in grape seed extracts can be determined. In practice, it is sufficient to determine the content of only those monomers. The main monomers in grape seed extracts are catechin, epicatechin, gallic acid, and epicatechin gallate. 
The content of monomers in grape seed extracts is generally around 10.0% and can reach up to 30.0%. Due to the complexity of grape seed extract components, it is generally difficult to completely separate multiple monomers by the HPLC method if the sample is not pretreated. Therefore, the extracts need to be pretreated to remove the polymers and improve the monomer content before injection. Commonly used pretreatment methods are silica gel column chromatography, SephadexLH- 20, Sephadex G25, Toyopeah TSK HW40, and other column chromatography methods. The sample can also be pretreated by thin-layer chromatography, generally using toluene: acetone: acetic acid = 3 : 3: 1 (V/V/V) as the unfolding agent.
Q: Are you a manufacturer or trader?
A: We are a manufacturer in China and our factory is located in Guangzhou City. Welcome to visit our factory!
Q: What is your minimum order quantity?
A: The minimum order quantity is 1000 pieces. But it's negotiable.
Q: Can you accept customization?
A: Yes, we offer OEM or ODM service. The recipe and component can be made as per your requirements.
Q: What kind of payment do you accept?
A: Paypal, West Union, MoneyGram, T/T, L/C, Cash, etc.
Contact Person: Grace