This article introduces xanthan gum, a versatile thickener and stabiliser used in food manufacturing. We explore its main functions and applications.
What is xanthan gum?
Xanthan gum is a polysaccharide produced by fermentation using the bacterium Xanthomonas campestris. It is widely used to increase viscosity and stabilise food systems. Xanthan does not normally form a gel on its own, although it can interact with other hydrocolloids. Its versatility makes it useful in many different formulations.
Thickening sauces and soups
Xanthan gum is used in sauces and soups to achieve a controlled consistency. Its performance across a range of temperatures and its shear-thinning behaviour can support both processing and the eating experience.
Texture in dairy products
Xanthan gum can help stabilise texture in suitable dairy formulations, including selected drinks and desserts. The result depends on its interaction with proteins, other stabilisers and processing conditions.
Gluten-free bakery formulations
In gluten-free baking, xanthan gum can help provide structure and manage water binding. It forms part of a wider formulation designed to compensate for the absence of gluten.
Stabilising dressings and mayonnaise
In dressings and mayonnaise-type products, xanthan gum increases viscosity and helps limit separation. It supports emulsion stability rather than acting as a conventional emulsifier on its own.
Xanthan gum: a versatile formulation tool
Xanthan gum is a useful thickener and stabiliser across many food categories. It helps manufacturers control consistency and physical stability. Selecting an appropriate grade and dose, followed by testing in the finished product, is essential for reliable quality.