RT info:eu-repo/semantics/article T1 Bioaccessibility and Genoprotective Effect of Melanoidins Obtained from Common and Soft Bread Crusts: Relationship between Melanoidins and Their Bioactivity A1 Temiño, Virginia A1 Gerardi, Gisela A1 Cavia Saiz, Mónica A1 Diaz Morales, Noelia A1 Muñiz Rodríguez, Pilar A1 Salazar Mardones, Gonzalo K1 Melanoidins K1 Bioaccessible fractions K1 Membrane permeability K1 Transepithelial transport K1 Genoprotective effect K1 Alimentos K1 Food K1 Bioquímica K1 Biochemistry AB Bread crust constitutes an important by-product of the bakery industry, and its utilizationfor the isolation of melanoidins to be used as a functional ingredient can enhance its added valueand contribute to health. The aim of this study was to evaluate the bioaccessibility, bioactivity, andgenoprotective effect of melanoidins derived from bread crust. Bioaccessibility was assessed ingastric, intestinal digestion, and colonic fermentation fractions. The results revealed a relationshipbetween bioaccessible melanoidins and their type (common or soft bread). No cytotoxicity effectswere observed for bioaccessible fractions, as assessed by MTT and RTA methods, and they did notaffect the distribution of E-cadherin in Caco-2 cells, confirming their ability to maintain membraneintegrity. Furthermore, our study demonstrated that the gastrointestinal and colonic fermentationfractions successfully transported across the intestinal barrier, without affecting cell permeability, andshowed antioxidant activity on the basolateral side of the cell monolayer. Remarkably, both fractionsdisplayed a significant genoprotective effect in Caco-2 cells. Our findings provide crucial insightsinto the relationship between the melanoidins and their bioactivity and genoprotective effect. Theseresults demonstrated the potential of bioaccessible melanoidins as valuable bioactive compounds forthe development of functional foods, without showing toxic effects on gastrointestinal cells. PB MDPI SN 2304-8158 YR 2023 FD 2023 LK http://hdl.handle.net/10259/7952 UL http://hdl.handle.net/10259/7952 LA spa NO This research was funded by the Autonomous Government of Castilla y Leon and Feder (JCyL/FEDER), grant number BU243P18. DS Repositorio Institucional de la Universidad de Burgos RD 24-nov-2024