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Grape Seed Extract

Grape Seed Extract

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No adulturation
95% OPC, 85% PC, polyphenol - UV


Product Introduction

Grape seed extract is a natural antioxidant substance extracted from grape seeds that cannot be synthesized in the human body-proanthocyanidins. This substance has a super anti-aging effect and strengthens immunity. The product has been widely used in health care products, medicine and cosmetics industries.

Major componet:

1. Polyphenols

Grape seeds contain polyphenols, mainly catechins and proanthocyanidins. Catechin compounds, including catechins, epicatechins and their gallic acid esters, are the main monomers in grape seeds, as well as the constituent units of proanthocyanidin oligomers and polymers.

2. Volatile ingredients

Grape seeds also contain a small amount of volatile components, most of which are alcohols, phenols, and terpenoids, all of which have high biological activity.

3. Other ingredients

In addition to the above-mentioned substances, grape seeds also contain crude protein, amino acids and vitamins A, E, D, K, P and various trace elements, such as calcium, zinc, iron, manganese, and cobalt.

grape seed grape seed extract


Original of the plant:


Part used:


Extract solvent:


Testing method:UV

Maker compounds:

Proanthocyanidins(PC) ≥95%, oligomeric proanthocyanidins(OPC) ≥85%, Polyphenol ≥(70%, 80%, 85%, 90%, 95%)

Appearance:Reddish brown powder


1. Grape seed extract can effectively alleviate cell aging; Proanthocyanidin is a natural antioxidant substance with strong anti-oxidation and elimination of free radicals, and can effectively eliminate superoxide anion free radicals and hydroxyl free radicals.

2. It can effectively protect eyesight; under normal circumstances, the eyes receive light from bright to dark through the reflection of the pigment in the retina. This pigment is called "rhodopsin", which is composed of protein and It is composed of a vitamin. Like the function of vitamins, grape seed extract can improve some of the functions of vitamin A.

3. It is a natural sunray resistant, which can block ultraviolet rays from harming the skin; the main ingredient of grape seed extract-proanthocyanidins can repair injured collagen and elastic fibers.

Other functions: protect the cardiovascular system, anti-radiation, anti-mutation, anti-tumor, etc.

grape seed tablet

How to identify the adulterated grape seed extract proanthocyanidins

In the current domestic market, many proanthocyanidins sold by grape seed are mixed or directly used as peanut coat extract proanthocyanidins. How to distinguish the authenticity of grape seed extract has always been a problem that many companies are very concerned about.

First of all, grape seed source proanthocyanidins are mainly B-type proanthocyanidins, mainly procyanidin B2, while peanut shells are mainly A-type proanthocyanidins, mainly procyanidin A2. Therefore, the content of proanthocyanidin A2 can be detected by liquid chromatography to determine whether it is the proanthocyanidin derived from grape seeds.

Secondly, from the product odor, the grape seed odor is relatively light, and the peanut coat or pine bark source odor is heavier, but this method is highly subjective and difficult to judge.

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