Color-Changing Cereal with Dispersible Coating
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Solution Overview
Problem
There is a need for ready-to-eat cereals that change color rapidly and substantially when contacted with an aqueous edible medium like milk, without using white base or outer coatings, and a cost-effective method to produce such cereals that captures children's interest.
Innovation Solution
A base cereal with a dispersible outer coating comprising cornstarch and powdered sugar, bonded with glycerine, which changes color when exposed to milk, using a single enrober for efficient coating application, reducing equipment needs and capital costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a dispersible outer coating is used to achieve rapid color change, then the color change speed is improved, but the coating complexity increases
Solution Approach 1:
The coating is segmented into two distinct functional layers: a non-dispersible base color layer and a dispersible outer coating layer containing the second color. This segmentation allows each layer to perform its specific function independently - the base layer provides initial color and structural integrity, while the outer layer provides rapid dispersion in aqueous media to achieve color change.
Solution Approach 2:
The outer dispersible coating uses a composite material system combining cornstarch (provides dispersibility in aqueous media), powdered sugar (provides structure and sweetness), and food coloring (provides the second color). This composite formulation enables rapid color change while maintaining coating integrity during storage.
2Speed
If multiple coating materials are used to achieve rapid color change, then the color change effect is improved, but the manufacturing cost increases
Solution Approach 1:
The outer dispersible coating is designed as a consumable, temporary layer that dissolves rapidly upon contact with milk or other aqueous media. Using inexpensive, food-grade materials like cornstarch and powdered sugar allows for rapid color change functionality without significant manufacturing cost increase, as these materials are readily available and inexpensive.
3Illumination intensity
If a non-white base color is used, then the visual attraction is improved, but the color change visibility is reduced
Solution Approach 1:
The invention specifically employs color changes as the primary mechanism for visual attraction. By using a dispersible outer coating containing food coloring that rapidly disperses in aqueous media, the coating transitions from opaque to transparent, revealing the base color underneath. This creates a dramatic visual effect that is highly visible and attractive to children.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The cereal changes color within 7-10 seconds when milk is added, providing a startling visual effect and improving manufacturing efficiency by eliminating unnecessary equipment and sorting complexities.
Implementation Method 1
The water soluble liquid, which may be glycerin or an aqueous glycerine solution, acts as a binder to bind the powder coating of the second color to the base cereal of the first color
Implementation Method 2
the outer coating over the base color has a dispersible second color... The outer coating obscures the base or first color... the coating comprises cornstarch and powdered sugar
Data Source
AI summary
A ready-to-eat cereal that is capable of changing color upon immersion into an aqueous medium such as milk. The cereal base has a non-dispersible first color. The cereal base has a coating comprising cornstarch, powdered sugar, and optionally food coloring. The coating is of a second color different from the first color and is in a quantity sufficient to obscure the first color. Preferably, glycerine is used to adhere the coating to the cereal base.Two methods of making the ready-to-eat cereal of the invention are also provided.