Chewing Gum: What Is It Made Of and How It Works

Chewing gum contains a chewy gum base, sweeteners, softeners and flavorings. The base may contain natural chicle or synthetic materials. Other ingredients dissolve or disperse as you chew, so the gum gradually loses its flavor but stays chewy.

What goes into chewing gum?

The gum base gives gum its stretchy texture. It can contain natural plant-derived materials, synthetic polymers or a blend of ingredients. Manufacturers may add softeners to keep the base pliable, sweeteners for taste and flavorings such as mint or fruit. Some products also contain colors.

A label may list the base simply as “gum base” instead of naming each component. In the United States, permitted ingredients for chewing gum base are covered by 21 CFR 172.615. Other food additives are covered by the FDA’s food additives and ingredients framework.

One example: a sugar-free mint gum

A sugar-free mint gum may list gum base, sweeteners such as sorbitol or xylitol, a softener such as glycerol and mint flavoring. Ingredients and their order vary by product. Labels do not always name the individual materials in the gum base.

Why gum stays chewy after the flavor fades

Saliva dissolves many sweeteners and carries away some flavoring compounds. The gum base does not dissolve in the same way, so it remains after the taste fades. The American Chemical Society explains how gum combines a persistent base with ingredients that release during chewing.

The gum warms and changes texture as you work it between your teeth. Softeners help keep the base pliable, and its elastic materials let it stretch and recover. Once much of the soluble sweetness and flavor is gone, the remaining gum can feel less pleasant, even though it is still intact.

How long a piece keeps its flavor depends on its ingredients and on how a person chews it. No single duration applies to every product.

Natural and synthetic gum bases

Chicle is a natural gum material obtained from the sapodilla tree. Some gum bases use natural materials; many products use synthetic components or a combination of materials. The exact base depends on the product.

A label that says “gum base” may not reveal whether the base is natural, synthetic or mixed. Check the manufacturer’s product information for details about a particular brand.

Chewing gum and bubble gum

Bubble gum is a type of chewing gum formulated to stretch into bubbles. Its base is designed for the stretching needed to blow bubbles. Ordinary chewing gum can sometimes make small bubbles, but it may tear more easily.

The difference comes from the product’s formulation, not a universal rule about one ingredient. For a reliable bubble, choose gum sold as bubble gum.

Can you digest the gum base?

The gum base is not broken down like ordinary food, so it passes through the digestive tract. Accidentally swallowing a piece is generally different from making a habit of swallowing gum. Keep gum away from young children who may choke on it, and follow product guidance.

Use a wrapper or bin to dispose of gum. It can stick to surfaces, and its base is difficult to remove once pressed onto them.

Key Takeaways

• Chewing gum contains a chewy base, sweeteners, softeners and flavorings. Some products also contain colors.
• The base may use natural chicle, synthetic materials or a combination. Labels may list it simply as “gum base.”
• Sweeteners and flavorings can dissolve or disperse during chewing, while the base remains chewy.
• Bubble gum is formulated to stretch for bubble blowing; ordinary gum may tear more easily.
• Gum base is not digested like ordinary food. Dispose of gum in a wrapper or bin.