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. 2022 Feb 7;8:777576. doi: 10.3389/fnut.2021.777576

Figure 1.

Figure 1

(A) Hydroxycinnamic acids; FA, ferulic acid; SA, sinapic acid; CA, caffeic acid; pCA, p-Coumaric acid. (B) Example of feruloylated glucuronoarabinoxylan, where FA is esterified to the O-5 hydroxyl group of a-L-arabinofuranose. Cross-linkage between hemicellulose chains is an example of a 5,5′ FA dehydrodimer. FA linkage with lignin is also demonstrated.