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Structure of arabinoxylan, showing the xylose backbone (black), arabinose substitutions (blue), ferulic acid (red). The main chain of xylose is connected by the β-1,4-glucoside bond, arabinose can be linked to the main chain by the α-1,2 or α-1,3-glucoside bond, and ferulic acid is substituted at the O-5 position of arabinose by the ester bond.
