High-Load Flavor Particles Through Modified Starch Extrusion
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Solution Overview
Problem
Existing melt extrusion methods are limited by low flavor load, typically less than 10% by weight, which is not cost-effective for applications requiring high flavor intensity.
Innovation Solution
The use of a carrier comprising 50-70% low DE maltodextrin and 30-50% modified starch, with a glass transition temperature above room temperature, allows for extrusion of particles with ≥12% flavor load by weight, achieved through controlled extrusion and cutting at the die face without additional drying steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If melt extrusion is used with conventional carriers, then the process is simple and cost-effective, but the flavor load is limited to less than 10% by weight
Solution Approach 1:
The patent uses a composite carrier system combining modified starch (30-50% of carrier) with maltodextrin (50-70% of carrier). The modified starch component enables higher flavor load capacity while the maltodextrin provides processability. This composite approach allows achieving ≥12% flavor load while maintaining extrusion processability, resolving the contradiction between flavor load and manufacturing ease.
Solution Approach 2:
The patent modifies the glass transition temperature (Tg) of the carrier system by adjusting the ratio of modified starch to maltodextrin and controlling moisture content (6-20% of total particle weight). By optimizing these parameters, the carrier achieves the right balance between flexibility during extrusion and stability for high flavor load, enabling ≥12% flavor encapsulation without compromising manufacturing feasibility.
2Quantity of substance
If higher flavor load is achieved, then flavor intensity is improved, but the extrusion process becomes more difficult to control
Solution Approach 1:
The patent controls the glass transition temperature of the carrier within a specific range by adjusting moisture content (6-20% of total particle weight) and carrier composition. This parameter control ensures the carrier remains in a glassy state during storage and processing, providing dimensional stability and predictable extrusion behavior even at high flavor loads of ≥12%, thus maintaining manufacturing precision.
Solution Approach 2:
The composite carrier system of modified starch and maltodextrin provides synergistic effects where the starch component contributes to structural integrity and the maltodextrin provides flowability and extrusion characteristics. This combination enables high flavor load capacity while maintaining smooth extrusion flow and consistent particle formation, resolving the extrusion control difficulty.
3Quantity of substance
If additional drying steps are added to improve flavor retention, then flavor load is increased, but the process complexity and production time increase
Solution Approach 1:
The patent incorporates the desired moisture content (6-20% of total particle weight) into the carrier formulation before extrusion. This preliminary conditioning of the carrier ensures that the extruded particles achieve the optimal glass transition temperature and flavor retention properties directly from the extrusion process, eliminating the need for subsequent drying steps and maintaining high production speed.
Solution Approach 2:
The carrier system is designed to self-regulate moisture content and maintain the glassy state through its composition of modified starch and maltodextrin. The carrier inherently provides the necessary stability and flavor retention properties without requiring additional processing steps, enabling the system to serve its own stabilization function and maintaining continuous high-speed production.
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 method results in extruded particles with no birefringence under polarized light, ensuring higher flavor retention and uniform size, facilitating improved flavor release control.
Implementation Method 1
a glass transition temperature above room temperature
Implementation Method 2
encapsulated flavor particles
Implementation Method 3
achieved through controlled extrusion and cutting at the die face
Data Source
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AI summary
Provided herein is a method for making an extruded particle comprising: a. mixing a modified starch and ≤ 20% water wherein the water content is such that said mixture has a glass transition temperature Tg above room temperature; b. heating the mixture at a temperature sufficient to form a molten mass; c. adding ≥ 12% flavor to the mixture or to the molten mass or both to form a flavored molten mass; d. extruding the melt through a die to form an extrudate; and e. cutting or crushing the extrudate to form an extruded particle having a retained flavor of about ≥ 12% by weight based on the total weight of the particle wherein the glass transition temperature of the particle is substantially the same as the mixture. Also provided herein is a a particle comprising: a) a carrier wherein the carrier comprises: i) a modified starch; and ii) a maltodextrin or blend of maltodextrins with different DE values; b) ≤ 20% by weight, water of the total weight of the particle; and c) ≥ 12% flavor; wherein the particle has a size from about 0.5 to about 5 mm.