Abstract
Phenolic acid analysis of hand-isolated outer grain layers and endosperm led to the identification of markers of pericarp and aleurone layers, respectively. A new dehydrotrimer of ferulic acid (DHT) was found to be concentrated in the outer pericarp of wheat bran whereas p-coumaric (p-CA) acid was mainly in the aleurone layer. Phytates were also used as a marker of aleurone layer and starch as a marker of starchy endosperm. Biochemical markers constitute an original method for determining the histological composition of any technological bran fractions. A pin milling process was applied to coarse bran produced by a conventional milling process. Three different fractions (B1, B2 and B3) were obtained by sieving the bran products and then the smallest bran particle fraction (B3) was air-classified to obtain two particle size fractions (B3a and B3b with a D50 of 83 and 7 μm, respectively). The biochemical composition of these fractions was used to calculate the distribution of tissues according to the sieving process. The dissociation behavior of individual bran tissues upon mechanical fractionation was investigated in relation to particle size and discussed according to their mechanical properties.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
