**9. Dietary fiber strengthens the gut immune barrier**

Pectin is a soluble dietary fiber with known modulatory effects on the gastrointestinal immunological barrier and is a noteworthy dietary fiber. Many fruits and vegetables, together with citrus fruits, apples, sugar beets, and potatoes, have had pectins separated from their primary and secondary cell walls. There are Linear 1,4-Dgalacturonan (homogalacturonan) segments and branching rhamnogalacturonan segments, which make up the majority. The degree of methyl-esterification, molecular weight, and neutral side chain topologies are all features that influence

pectin's functional capabilities [20]. The β-glucan and inulin metabolites also improved intestinal immunity.
