Bulking agent

Bulking agents are substances used to increase the volume or weight of food products without significantly altering their taste or texture. They are often derived from plant sources, such as cellulose or starches, and can be manufactured through various physical and chemical processes to achieve specific properties. Some may also be produced through fermentation.

Manufacturers add bulking agents to provide bulk and texture, particularly in low-calorie or sugar-free products, and to improve mouthfeel. They can also help to stabilise food structures and prevent ingredients from separating. Common foods that contain bulking agents include biscuits, sugar-free confectionery, low-fat spreads, and diet drinks.

Bulking agents are authorised food additives in Great Britain and are listed on the Register of Food Additive Authorisations. European bodies like EFSA have evaluated many of these substances. At typical intake levels, they are generally considered safe and contribute to dietary fibre intake for some types. Some bulking agents, like certain types of fibre, may have a laxative effect if consumed in very large quantities, but this is not typically observed at normal usage levels in food.