In suspension-cultured maize cells, dimerisation of ferulic acid esterified to polysaccharides occurs mostly in the protoplasm, but may occur in the cell walls when peroxide levels increase due to pathogenesis. In suspension-cultured wheat cells, only the 8,5'-diferulic acid is formed intraprotoplasmically with the other dimers being formed in the cell wall.
In suspension-cultured maize cells, polymerisation of ferulic acid linked to polysaccharides primarily takes place in the cytoplasm, but may also occur in the cell walls when peroxide levels rise due to disease. In suspension-cultured wheat cells, only 8,5'-diferulic acid is produced within the cytoplasm, while other dimers are formed in the cell wall.