Prebiotic Snack Bar Binder for Inulin Mixing and Probiotic Stability
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Solution Overview
Problem
Existing snack bars face challenges in incorporating high molecular weight inulin as a prebiotic, preserving probiotics during shelf life, and maintaining product integrity while reducing water activity to prevent degradation.
Innovation Solution
A method involving mixing inulin into a syrup composition below 60°C, forming a binder slurry, combining with waxy grain composition, and slab-baking at controlled temperatures to achieve a water activity below 0.3, while using a yogurt coating to preserve probiotics and maintain product integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If inulin is incorporated into the binder at high concentrations, then prebiotic content is improved, but inulin does not dissolve properly and mixes poorly
Solution Approach 1:
The inulin is pre-mixed with a portion of the binder before being incorporated into the complete binder composition. This preliminary mixing action ensures proper distribution and dissolution of the high molecular weight inulin before the full binder is applied to the grain pieces, resolving the mixing and dissolution problems associated with high inulin concentrations.
2Reliability
If water activity is reduced to preserve probiotics, then probiotic stability is improved, but product texture and binding may be affected
Solution Approach 1:
The yogurt coating is applied specifically to the exterior surface of the snack bar, creating a localized probiotic reservoir that is protected from oxidation and moisture. This allows the interior of the bar to maintain optimal moisture content for texture and binding, while the coated surface provides the low water activity environment needed for probiotic stability during shelf life.
3Quantity of substance
If discrete pieces of waxy grains are used as natural fiber, then fiber content and texture are improved, but binding together the pieces becomes more difficult
Solution Approach 1:
The binder is formulated as a composite material combining multiple binding agents including polysorbate, pectin, and modified food starch in specific proportions. This composite binder provides enhanced adhesion properties that effectively bind the discrete waxy grain pieces together, overcoming the difficulty of binding large-volume discrete fiber pieces while maintaining product integrity.
4Quantity of substance
If high molecular weight inulin powder is used, then prebiotic efficacy is improved, but mixing and incorporation becomes more difficult
Solution Approach 1:
The high molecular weight inulin powder is pre-mixed with a portion of the liquid binder components before being incorporated into the complete binder formulation. This preliminary action breaks up clumps and ensures uniform distribution of the difficult-to-mix inulin powder, making subsequent mixing and incorporation steps significantly easier while maintaining the high prebiotic potency of the inulin.
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 ensures thorough incorporation of inulin, preserves probiotics, and maintains a crunchy texture with visible ingredients, supporting digestive wellness and providing a stable snack bar with desirable appearance and flavor.
Implementation Method 1
heating the binder slurry to above 60°C to dissolve the inulin
Implementation Method 2
baking the slab at a temperature of from about 121,11°C (250°F) to about 204,44°C (400°F) for about 4 to about 20 minutes to reduce the water activity of the slab to below about 0.3
Data Source
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AI summary
Snack bars incorporating a prebiotic, probiotic and natural fibers, and methods of making such snack bars are described herein. The snack bar may incorporate waxy grains held together by a binder comprising inulin and may be enrobed with a yogurt coating. The methods may include mixing inulin into a binder syrup at low temperature and a slab-bake process for reducing water activity.