Prebiotics are dietary supplements designed to regulate the composition of gut microbiota, which can benefit people’s health. Galactooligosaccharides (GOS), oligofructose (a subgroup of inulin), and fructooligosaccharides (FOS) are examples of prebiotics. Before delivery, an infant’s gastrointestinal tract is sterile, but after birth, microorganisms rapidly colonize the baby’s digestive tract, which is part of adapting to