Phenolic compounds as cross-links of plant derived polysaccharides
M. Bunzel, J. Ralph, H. Steinharthttps://doi.org/10.17221/10613-CJFSCitation:Bunzel M., Ralph J., Steinhart H. (2004): Phenolic compounds as cross-links of plant derived polysaccharides. Czech J. Food Sci., 22: S64-S67.
Plant cell wall polysaccharides are partially cross-linked via phenolic compounds. As shown in the past, the most important phenolic compounds to cross-link plant cell-wall polysaccharides are ester-linked ferulic acid dimers, but p-coumarate dimers were also shown to be potential cross-linking compounds. Recently, ferulic acid dimers were identified and quantified in a range of cereal grains. The isolation of 8-O-4-dehydrodiferulic aciddiarabinoside from maize bran shows that diferulic acids are able to form intermolecular cross-links between arabinoxylans. The more recently identified sinapic acid dehydrodimers and ferulic acid dehydrotrimers provide additional contributions to building up a strong network of plant cell wall polysaccharides.
plant cell walls; arabinoxylans; ferulic acid; ferulate dimers and trimers; sinapate dimers