The chemical composition of cork includes various types of compounds

  • Suberin (45%) is the main component which covers the walls of the cells and is responsible for its elasticity and compressibility ;
  • Lignin (27%), forming the structure of the cell walls, is an insulating compound;
  • Polysaccharides (12%) are the components of the cell walls which give cork its texture;
  • Tannins (6%) are the polyphenolic compounds which give it colour, and help to protect and preserve the material;
  • Ceroids (6%) are the compounds responsible for its impermeability. 
  • Ash (4%).

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