Isolation and structural identification of complex feruloylated heteroxylan side-chains from maize bran

α-d-Galactopyranosyl-(1 → 3)-α-l-galactopyranosyl-(1 → 2)-β-d-xylopyranosyl-(1 → 2)-5-O-trans-feruloyl-l-arabinofuranose (FAXGG) and α-d-xylopyranosyl-(1 → 3)-α-l-galactopyranosyl-(1 → 2)-β-d-xylopyranosyl-(1 → 2)-5-O-trans-feruloyl-l-arabinofuranose (FAXGX), the most complex feruloylated heteroxylan side-chains known to date, have been isolated from maize bran and fully structurally characterized.