Processing methods such as cooking, germination, and fermentation alter the bioavailability and biological activity of lentil bioactives by increasing peptide release, modifying resistant starch structure, and redistributing polyphenols between soluble and bound fractions.

When lentils are cooked, germinated, or fermented, their proteins break into smaller pieces, their starch changes shape to resist digestion, and their plant compounds shift from being stuck in fibers to becoming free-floating. These changes let gut bacteria feed more efficiently on the starch and peptides, producing beneficial acids that strengthen the gut lining. At the same time, the freed plant compounds directly block inflammation signals in gut cells and turn on protective antioxidant systems, reducing damage and improving barrier function.