Are you still using adulteration of Grape Seed Extract OPC?

Por lucy fu em 01-08-2017 em Saúde

Do you know how serious is adulteration of Grape Seed OPC today?

A scientific study group investigated 21 commercially available grape seed extract (GSE) supplements in 2014 .Their report on Food Chemistry revealed that amount 21 commercially available grape seed extract supplements samples 6 of them are seriously adulterated or maybe counterfeit ,and another 5 sample are below standard . "Very few of the commercial GSE samples contained an overall content of PACs and catechins at a level comparab le to authentic GSE, which raises a serious concern," they wrote.

Natural Grape seed extract OPC Grape Seed OPC adulteration

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Grape seedGSE-EDM-1.png
SourceGSE-EDM-12.jpg
Peanut skin

$28/KgGSE-EDM-2.png
Production Cost
(95% OPC)$10/Kg

41.2%GSE-EDM-3.png
Market Shares
(2015,China)58.8%

 

Why we should not use adulteration OPC from Peanut?

Nowadays ,peanut skin extract is the most common counterfeits of GSE as they contain similar proanthocyanidins .However ,researches showed that the exact constituents of ingredients in proanthocyanidins from peanut skin and grape seed are different .Also the functions from two kinds source are different. Moreover , peanuts are well known as a common allergen .Using adulteration of GSE with peanut skin extracts may bring serious risk to consumers and the company due to the possibility of reactions to peanut allergens.

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Pharmacology

Peanut skin extract is the most common counterfeit of GSE as it contains high proanthocyanidins too .However,there is no scientific evidence that the counterfeit possesses equal health properties with grape seed OPC ,due to their incongruent proanthocyanidins constituents.

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Peanut allergy

Peanut skin extract is the most common counterfeit of GSE as it contains high proanthocyanidins too .However,there is no scientific evidence that the counterfeit possesses equal health properties with grape seed OPC ,due to their incongruent proanthocyanidins constituents.

 

How to identify adulteration?

Although peanut skin is rich in proanthocyanidins ,the constituents of adulterations and the authentic product are didferent .GSE is found to contains B-type PACs with highest concentrations of catechin and epicatechin while peanut skin is composed principally of A-type PACs with negligible quantities of the monomers, catechin and epicatechin . So far, investigation shows several methods including TLC, HPTLC and HPLC-UV/MS may detect GSE adulteration .

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Chromatogram 1: Natural Grape Seed Extract 95% OPC

The characteristic peaks of seven ingredients in GSE are visible obviously in chromatogram.
the seventh gape seed ingredients peak is clear

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Chromatogram 2: Adulerated 1% peanut skin extract

Peanut skin peak appear at 12~13min (A type)
the seventh OPC peak is not clear

 

How could I make sure getting genuine Grape Seed OPC ?

GSE-EDM-8.pngFirstly, if you have purchased GSE already ,to make sure a test before you use them .Or you can send some samples to us to have a test .We will conduct a free test for you .

GSE-EDM-9.pngSecondly,to make a right choice before you order as you can purchase GSE from reliable provider.Organic Herb Inc.developed HPLC Method to detect adulteration of GSE to make sure all the product is safe and qualified .

GSE-EDM-10.pngThirdly, if you prefer to choose other provider ,price can be also good way to identify. The Average production cost of grape seed extract 95 OPC is US$28/Kg ,so be cautious with the product which is lower than that .

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