*2.2.4. Ferulic acid content*

FA content in AX1 and AX2 were quantified by Reverse Phase High-Performance Liquid Chromatography (RP-HPLC) after de-esterification step as previously described [4, 18]. An Alltima C18 column (250 × 4.6 mm) (Alltech Associates, Inc., Deerfield, IL, USA) and a photodiode array detector Waters 996 (Millipore Co., Milford, MA, USA) were used. Detection was followed by UV absorbance at 320 nm. The measurements were performed in triplicate.

**Scheme 1.** Nixtamalization conditions and arabinoxylans extraction (AX1, AX2).
