PG acts as a humectant, helping to retain moisture in food products, preventing them from drying out and maintaining their texture and quality. It is often added to baked goods, dairy products, and processed foods. It is a solvent that can dissolve flavors, colors, and other food ingredients. It is used as a carrier for liquid food colorings, extracts, and flavors. This helps to evenly distribute and mix these ingredients within the food or beverage product. It helps to prevent the separation of ingredients, particularly in dairy products, dressings, and sauces. It has mild antimicrobial properties that can help inhibit the growth of bacteria and fungi in food and beverage products, extending their shelf life. It is used as a preservative in some processed foods, salad dressings, and baked goods.