Formulating Natural Colors for Cereal

WK Kellogg Co recently announced it will eliminate all artificial colors and the preservative BHT from its cereal manufacturing by the end of 2026. Reaching this milestone a full year ahead of schedule means iconic cereals such as Froot Loops and Apple Jacks will now be colored using natural ingredients.

Consumer Demand Drives Innovation

Consumers are paying closer attention to ingredient labels than ever before. Simple, recognizable ingredients have become a standard expectation rather than an added bonus. WK Kellogg is responding to this shift by replacing synthetic additives with natural colors. When an established industry leader takes this step on a large scale, it resets the benchmark for the entire food sector, signaling to competing brands that the transition to clean label formulations is now an urgent market priority.

Technical Challenges in Extruded Cereal Manufacturing

Reformulating vibrant breakfast cereals involves specific technical considerations. When selecting natural colors for these products, food technologists must consider two important factors:

Process Stability: The extrusion process involves high temperatures and pressure. Many natural pigments degrade under these harsh processing conditions.
Migration Stability (Bleeding): Since breakfast cereals are typically served in milk or yogurt, natural colors must not dissolve immediately upon contact with liquid. Rapid color release bleeds into the milk and causes the cereal loops to lose their visual appeal quickly.

Optimizing Color Stability in the Final Application

Milk and yogurt contain a high proportion of water, so the formulation and application of natural colors should be carefully selected according to the characteristics of the cereal. Specialized formulations and application techniques can help achieve the desired color stability and appearance:

Oil-dispersible Pigments and Suspensions: These formulations can provide good color distribution and stability within the cereal matrix.
Fat-soluble Color Molecules: Naturally fat-soluble pigments can provide good stability in applications where the formulation and process require this type of color system.
Post-extrusion Coating: Heat-sensitive natural colors can be applied in a sugar or fat coating after extrusion rather than directly incorporated into the dough, helping maintain the desired color during processing and final application.

Matching Natural Ingredients to Specific Colors

At BioconColors, we combine natural raw materials with specialized formulation techniques and our experience in cereal applications to develop the appropriate color solution for each shade:

Red: Carmine provides excellent heat stability and can be formulated for different cereal applications. Anthocyanins are another natural alternative that can be considered depending on the desired shade and application process.
Orange: Bixin from Annatto and Paprika Oleoresin are natural colors that can provide attractive orange shades and good stability for cereal applications.
Yellow: Curcumin and Norbixin provide bright, vibrant yellow hues and can be selected according to the processing conditions and desired final shade.
Green: A combination of Curcumin and Chlorophyllin can be used to develop attractive green shades, with the formulation adjusted according to the processing conditions and desired application.
Blue and Purple: Natural pigments derived from Spirulina can be used for blue shades, while anthocyanins can provide purple and reddish-purple shades. The appropriate application method can be selected according to the processing conditions and desired final color.

Transitioning to Natural Colors with BioconColors

Switching from synthetic to natural colors requires expertise in both raw material selection and food processing conditions. At BioconColors, we formulate customized natural color solutions using a wide range of natural sources. With our experience in cereal applications, we help food manufacturers select and develop the appropriate color solution for their products, maintaining attractive, stable colors and consistent quality.