How does wheat grain, bran and aleurone structure impact their nutritional and technological properties?

Wheat grain and its technological fractions-bran and aleurone-are rich in nutritional compounds such as dietary fibre and phytochemicals, which are recognized as having high health benefits. These bioactive compounds are embedded in the complex cellular and molecular structures of the wheat matrix. The matrix structure influences their bioaccessibility and bioavailability, probably altering their metabolic and health effects. In this review, we have gathered current knowledge on the influence of the structure of cereal matrices such as grain, bran or aleurone on their metabolic and health effects, as well as their impact on the quality of final cereal-based products.