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"OPCs" and "Proanthocyanidins" are Unreliable Labels in the Marketplace Consumers need to know that there is no American industry standard for accurately identifying and quantifying products sold as OPCs (oligomeric proanthocyanidins) in the marketplace. The result is that most "OPC" products contain unidentified and untraceable extracts typically labeled vaguely as "grape seed extract" or "pine bark extract." Even the trained observer is left guessing about the origin of the ingredients, the method of production, in which country the extract was made and according to what local standards it was produced. Some "OPC" products contain nothing more than grape seeds or other plant parts which have been pulverized in a food processor --because producing extracts is infinitely less costly than isolating OPCs. Many manufacturers use chemical solvents which are quite different from water and ethanol extracts. The manufacturers that do isolate proanthocyanidins then fail to remove the many large "polymeric" proanthocyanidins from among the small "oligomeric" proanthocyanidins (the importance of molecular size is discussed below). There is also wide variation between grape seeds used as well as seed separation, drying and storage. All of these differences have significant impact on the final composition--and why most are antinutritive and may be dangerous when taken in large amounts. Nevertheless sellers of these so-called "OPC" products are currently borrowing research conducted on other products to support the efficacy of their own. The differences, if even known by the seller, are conveniently left unmentioned and consumers have little or no means to make the distinction. OPCs are very complex (much more than other phytonutrients), so there
is as much confusion as there are commercial opportunists. The
result is pandemic misinformation. |
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Sellers advertise their
"grape seed extracts" as antioxidants and
Free Radical Scavengers (referring to Jack Masquelier's U.S. Patent No.
4,698,360) in spite of the fact that
their products have almost nothing in common with the scientific methods
used in that patent. |
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| The Complex Organic Structure of OPCs Unlike single nutrients such as vitamin C (ascorbic acid) and vitamin E (d-alpha-tocopherol), OPCs are very complex and require specialized knowledge and technology in order to be accurately identified and quantified. OPCs are organic clusters of dimers (2), trimers (3), tetramers (4) and pentamers (5)—and no larger. Single catechins and single epicatechins act differently from those that are bonded as OPCs. Dr. Masquelier received several patents for the commercial extraction
and isolation of OPCs from pine bark and grape seeds. It is these highly
defined complexes that have been subject to intensive biological,
toxicological, pharmacological and analytical research; and approved in
Europe as over-the-counter medicines. |
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Flavay® is neither an "extract" nor a simple bioflavonoid (this is important because many are non-bioavailable). Flavay® is a highly defined, polyphenol complex comprised of pairs and triples of specific molecules called “flavan-3-ol” units. Intensive biological, toxicological, pharmacological and analytical research was conducted for the purpose of registration as a medicine in France and other countries in Europe. The rigorous testing to meet the standards required by the health ministries of France, Germany and other European countries demonstrate that Flavay® is 100% bioavailable, nontoxic, nonallergenic, noncarciogenic, nonmutagenic, will not cause birth defects and is completely safe. For quality, consistency,100% bioavailablity and safety, consumers may rely upon Flavay®. |
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