Isolation and structural characterisation of 8-O-4/8-O-4- and 8-8/8-O-4-coupled dehydrotriferulic acids from maize bran

The isolation of two dehydrotriferulic acids from maize bran fiber demonstrates that ferulate trimers contribute to a strong network within the plant cell wall. These trimers do not contain a 5-5-coupled dimeric unit, hinting that more than two polysaccharide chains may be coupled by ferulate oligomers.