Proteolysis

Protein breakdown into peptides and free amino acids, driven by alkalis, acids, or proteolytic enzymes. This quiet chemistry powers cheese ripening, dry-aged beef, soy sauce and fish sauce fermentation, and the manufacture of savory hydrolysates, generating the umami depth, aromas, and tender textures consumers prize. Left unchecked, the same reactions cause bitterness, mushiness, and spoilage. Food scientists therefore manage proteolysis as both tool and threat: encouraging it where flavor complexity is wanted, suppressing it with cold, salt, or heat where stability matters.