Arla targets lighter textures in protein bars

Arla Foods Ingredients is pushing high-protein bars into lighter, aerated formats with AirBar, a concept built around stable air incorporation, processing performance, and texture retention through shelf life.

The concept uses Nutrilac PB-8420, a milk protein blend developed for protein bar applications. In AirBar, the ingredient supports whipping performance, allowing air to be incorporated into the bar mass while maintaining a soft, aerated structure through processing and storage. The formulation is designed to support a 30% protein claim while creating a lighter eating experience than the dense and chewy bars that still dominate parts of the category.

Although shown as a single-layer aerated protein bar, the concept can be extended across coated marshmallow-type treats, whipped layers in composite bars, light centres in cookie-based snacks, and hybrid structures that combine aerated and conventional bar masses. That gives the development reach beyond sports nutrition, into confectionery, bakery, and mainstream snacking.

For several years, high protein content carried much of the differentiation work in the category. Protein has now moved into everyday yogurts, drinks, desserts, bars, bakery formats, and meal replacements, which has changed the competitive ground. Product developers are having to balance sensory quality, convenience, sweetness profile, digestive comfort, cost, and shelf-life performance while still delivering the nutritional claim on pack. IN Food recently covered Danone’s move to take Oikos into ambient protein shakes, another example of established protein platforms moving into new processing and distribution models.

Texture is becoming one of the hardest parts of that balancing act. High-protein bars can harden during storage, become sticky, lose bite quality, or develop chalky and dense textures. The problem comes from the behaviour of protein systems alongside moisture, fibres, polyols, lipids, flavour systems, and processing conditions. A bar can meet its nutritional target and still fail once storage and repeat purchase are brought into the equation.

Arla Foods Ingredients developed AirBar after testing more than 30 of its products. The concept uses Nutrilac PB-8420 with a small quantity of standard gelatin to help retain air and prevent collapse. The level of gelatin can be adjusted according to the target texture, while the wider formulation is not dependent on one specific fibre or polyol system. That flexibility is useful in a category where manufacturers must manage sweetness, cost, labelling, process compatibility, and retailer requirements alongside the protein claim.

A 12-month real-time storage study at 20°C was used to monitor textural changes. Accelerated shelf-life testing can expose stress points, but real-time storage gives a clearer view of how a bar behaves under ordinary conditions. In high-protein bars, shelf life is judged as much by texture and flavour acceptability as by microbiological stability.

AirBar also requires a different view of production. Arla Foods Ingredients used a planetary bakery mixer with a paddle rather than a standard Z-blade mixer profile, reflecting the different mixing needs of an aerated protein mass. Protein aeration therefore becomes a process decision as well as an ingredient choice. Mixing, mass handling, forming, coating, cooling, and packaging all influence whether the final bar keeps its intended structure.

Aeration gives bar manufacturers a route to lighter textures, different mouthfeel, and more visible differentiation without abandoning the high-protein platform. In confectionery and bakery, it also opens space for formats that borrow from indulgent structures while carrying a stronger nutritional profile.

The broader commercial push toward portion-controlled, protein-rich, and nutrient-dense formats is intensifying. GLP-1 medication use has accelerated interest in smaller, higher-protein products, although the technical pressure was already visible before that shift. Smaller bars, indulgent textures, lower sugar targets, and high-protein claims all have to survive industrial production.

The scale-up challenge remains exacting. Aerated systems must withstand mixing, forming, coating, handling, transport, and storage without collapse, shrinkage, or unacceptable variation. Where those points are controlled, aeration could become a practical route out of the increasingly crowded high-protein bar format.