Shelf-Stable Mousse via Water Activity Control
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Solution Overview
Problem
Current mousse production methods are not scalable for large-scale manufacturing and result in products that are not shelf-stable, requiring refrigeration and aseptic packaging due to high water activity and microbiological instability, while attempts to make them shelf-stable often compromise texture and taste with high sugar or fat content.
Innovation Solution
A shelf-stable mousse is created by aerating a fat-free composition of a whipping agent and water with a sugar syrup, then mixing it with a fat-containing substance, achieving a unique viscoelastic property with low fat and dairy content, allowing for ambient storage without aseptic packaging, characterized by a water activity of less than 0.75, a loss factor tan δ value of greater than 0.95, and a soft, creamy texture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mousses are made shelf-stable by adding significant quantities of sugars and stabilizers, then microbiological stability is improved, but texture and taste deteriorate due to hardening and drying
Solution Approach 1:
The invention changes the water activity parameter to less than 0.75 through a specific sugar syrup composition and aeration process, achieving shelf stability without adding excessive sugars or stabilizers that would deteriorate texture and taste
Solution Approach 2:
The invention uses a composite system combining aerated fat-free composition with fat-containing substance, creating a unique viscoelastic structure that maintains both microbiological stability and optimal texture without relying on traditional high-sugar preservation methods
2Stability of the object's composition
If refrigerated mousse is used to maintain desirable mouthfeel, then texture is improved, but storage and handling become problematic due to softening and stickiness at room temperature
Solution Approach 1:
The invention changes the water activity parameter to less than 0.75, which prevents the softening and stickiness that occur in refrigerated mousses at room temperature, while still maintaining the desirable light and soft mouthfeel through aeration and viscoelastic properties
3Stability of the object's composition
If traditional mousse preparation methods are used in domestic kitchens, then texture is improved, but scalability to manufacturing proportions is not achieved
Solution Approach 1:
The invention segments the mousse preparation into distinct functional components: aerated fat-free composition (providing structure and lightness) and fat-containing substance (providing mouthfeel and flavor carrier), which can be independently controlled and scaled for manufacturing
Solution Approach 2:
The invention changes the protein concentration to a specific range of 0.6 to 1.5 wt% and controls water activity to less than 0.75, creating a formulation that achieves desirable texture while being amenable to large-scale manufacturing processes
4Reliability
If aerated emulsion with high fat content is used to create shelf-stable mousse, then storage stability is improved, but calorie density increases and texture becomes compromised
Solution Approach 1:
The invention segments the fat component into a separate phase (fat-containing substance added after aeration), allowing the bulk of the mousse to remain fat-free and low-calorie, while still achieving shelf stability through the aerated protein-sugar matrix
Solution Approach 2:
The invention changes the water activity to less than 0.75 and controls fat content to 10-20 wt%, achieving shelf stability without the high calorie density associated with traditional high-fat aerated emulsions
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 mousse retains a light and soft mouthfeel similar to refrigerated mousse at ambient temperature, is microbiologically stable, and has a longer shelf life, with sensory properties that include stickiness and a long residual mouth coat, appealing to consumers, while maintaining a lower calorie density and supporting flavor profiles.
Implementation Method 1
aerating a mixture of the requisite ingredients including protein, fat, sugars and water
Implementation Method 2
The mousses in this case are produced using an oil-in-water emulsion, where the oil phase is generally a fat or fat blend, which are then aerated
Implementation Method 3
aerating a mixture of the requisite ingredients including protein, fat, sugars and water
Data Source
Figure 1
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Figure 2B
AI summary
A shelf-stable mousse comprising (i) an aerated fat-free composition of a protein whipping agent, water and a sugar syrup, which composition is in admixture with (ii) at least one of a fat-containing substance; wherein the mousse has a water activity of less than 0.75, a hardness of less than 0.8N (measured as the force required to insert a probe to a depth of 7mm into the mousse), and a loss factor tan δ value of greater than 0.95.