What is Proanthocyanidins(OPC)?

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      Proanthocyanidins are present in the fruits, bark, leaves and seeds of many
      plants where they provide protection against predation. At the same time they
      give flavor and astringency to beverages such as wine, fruit juices and teas.
      They belong to a class of polyphenols and are widely distributed throughout the
      plant kingdom. Their antioxidants are much stronger than vitamin C or vitamin E
      in aqueous systems.

      Proanthocyanidins are oligomeric flavonoids. They are dimers or oligomers of
      catechin and epicatechin and their gallic acid esters.They share common
      properties with other polyphenols, in particular their reducing capacity and
      ability to chelate metal ions. However, their polymeric nature clearly makes
      them different. They have a high affinity for proteins and their absorption
      through the gut barrier is likely limited to the molecules of low polymerization
      degree and to the metabolites formed by colonic microflora. You may also come
      across additional substances in this category such as procyanidins,
      profisetinidins, and prorobinetinidins.

      Proanthocyanidins are in the first place very strong antioxidants. Studies
      have shown that proanthocyanidins act as anti-cancer and anti-allergic agents,
      and that they improve heart health.


      There are a lot of research supports the following application:


      >Hearth Disease




      >Gastric ulcer,

      >Large bowel cancer,

      >Cataracts and diabetes


      Pycnogenol, OPC, Oligomeric Procyanidins


      The major proanthocyanidins (flavanols) are present in whole fruit, juice,
      and pulp of strawberry, Saskatoon berry, raspberry, wild blueberry, chokecherry,
      seabuckthorn and some other plants.

      General source of dietary supplements for grape seed extract and pine bark

      Side effects and safety

      No significant side effects were reported

      Nutragreen Biotechnology Co., Ltd, a brand of Shanghai Lvshang Biotech Co.,
      Ltd, is a GMP compliant and FDA registered manufacturer and supplier of raw
      materials of plant extracts, botanicals, herbs, especially Tradtional Chinese
      herbs.Proanthocyanidins(OPC) is one of our most competitive ingredients with
      various specifications and stocks available all year round.

      Ms. Eunice Lee

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