Water-Based Aerated Confectionery for Drainage-Free Stability
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Solution Overview
Problem
Existing water-based aerated confectionery products face challenges in achieving stability against drainage and sugar crystallization, particularly in ambient conditions, due to the high water activity and sensitivity of protein-based systems.
Innovation Solution
The development of a water-based aerated confectionery with a pH less than 5.5 and water activity below 0.67, utilizing aggregated whey protein and a blend of sugars, including fructose, to stabilize the system against drainage and crystallization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If water-based systems are used to achieve lighter texture and lower calorific value, then the product has softer texture and free of SFA, but the water activity increases significantly leading to instability
Solution Approach 1:
The patent changes the chemical parameters of the system by adjusting pH to acidic levels (pH < 5.5) and controlling water activity to below 0.67. These parameter changes enable the protein aggregates to stabilize the foam structure while maintaining the soft texture characteristic of water-based systems, resolving the contradiction between texture softness and water activity control.
Solution Approach 2:
The patent creates a composite system combining water, sugar, and protein aggregates in a specific formulation. This composite material approach allows the system to achieve both low water activity (<0.67) and soft texture simultaneously, as the combined components interact to stabilize the foam structure while maintaining the desirable sensory properties of water-based confectionery.
2Stability of the object's composition
If protein aggregates are used to stabilize foam structure in water-based systems, then the gas bubbles remain stable, but the system becomes sensitive to pH and water activity changes
Solution Approach 1:
The patent deliberately changes the pH parameter to acidic levels (pH < 5.5) which is the optimal range for protein aggregate formation and foam stabilization. By operating in this acidic parameter range, the system achieves stable foam structure while the pH sensitivity becomes a controlled feature rather than a harmful factor, as the acidic environment itself supports the stability mechanism.
3Reliability
If sugar content is increased to reduce water activity, then the water activity decreases, but sugar crystallization occurs over time
Solution Approach 1:
The patent changes the physical state parameters of sugar by incorporating it into the foam matrix at high concentrations while controlling water activity to below 0.67. This parameter change creates a supersaturated state that is kinetically stable, preventing crystallization while maintaining low water activity. The acidic pH and protein aggregates further stabilize this sugar-containing matrix.
Solution Approach 2:
The patent uses sugar in a form that temporarily provides water activity control but is designed to remain in a metastable liquid state within the foam matrix rather than crystallizing. The sugar serves its water activity control function during shelf life and then remains dissolved in the stable foam structure, avoiding the need for crystallization.
4Reliability
If fat-based fillings are used to achieve stability, then the product is microbiologically stable, but the texture becomes heavy and differs from consumer expectations
Solution Approach 1:
The patent changes the fundamental composition parameter from fat-based to water-based system, achieving microbiological stability through controlled water activity (Aw < 0.67) rather than through fat content. This parameter change maintains the light and soft texture expected by consumers while achieving the required microbiological stability through the water activity control mechanism.
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 solution provides stable, aerated confectionery products that remain stable for at least six months in ambient conditions, without visible drainage or sugar crystallization, offering improved texture and shelf life.
Implementation Method 1
The aggregated protein is preferably whey protein. The aggregated protein stabilise the water-based aerated confectionery.
Implementation Method 2
The aeration of water based systems is possible but a surface active species such as a protein or surfactant is required
Implementation Method 3
The invention relates to acidic aerated aqueous confectionery comprising aggregated protein and sugar having a pH less than 5.5
Implementation Method 4
This is practically achieved by ensuring that the water activity of the product is low enough to prevent the proliferation of pathogenic bacteria, yeasts and moulds. The water activity of these systems is challenging because all of the solids are suspended in water
Implementation Method 5
This can be addressed either by replacing part of the water with a sugar alcohol that has high humectancy (e.g. sorbitol or glycerol) or by an increase of the solids of the system by adding more sugar
Data Source
AI summary
The invention relates to a water-based aerated confectionery product and methods of making the same. In particular, the invention relates to stable acidic aqueous mousses comprising aggregated whey protein and sugar. In one aspect, the invention provides a water-based aerated confectionery having a pH less than 5.5 and a water activity less than 0.67, wherein the aerated confectionery comprises 30 wt % to 90 wt % sugar and between 1 wt % to 8 wt % protein. The protein stabilises the water-based aerated confectionery.