Surface Active Plant Extracts in Glassy Extrusion Matrices
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Solution Overview
Problem
Current encapsulation processes, such as spray drying and extrusion, face limitations in achieving high flavor loads in glassy matrices, leading to low flavor intensity and increased costs due to limited maximum flavor loads, especially with natural carriers like starch and maltodextrin, which restrict the desired flavor intensity and functionality in final applications.
Innovation Solution
Incorporating 0.5 to 12% by weight of surface active plant extracts, such as Quillaja or Licorice extracts, into the glassy matrix with carbohydrates like maltodextrin, allowing for increased flavor loads up to 20% by weight without compromising the glassy state stability or flavor integrity, achieved through melt extrusion and optional drying to enhance the glass transition temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If natural carriers like starch and maltodextrin are used in glassy matrices, then the matrix provides good physical stability and protection, but the maximum flavor load is limited to about 5-6%, restricting flavor intensity and functionality
Solution Approach 1:
Surface active plant extracts (such as Quillaja or Licorice extracts) are introduced as intermediary substances that mediate between the carbohydrate matrix and the flavor encapsulate. These extracts act as emulsifiers and surfactants that reduce interfacial tension, allowing the flavor to be incorporated at much higher loads (up to 20%) while maintaining stability and preventing phase separation or flavor loss.
Solution Approach 2:
The invention creates a composite matrix system combining carbohydrates (starch, maltodextrin), surface active plant extracts, and flavor encapsulates. This composite structure leverages the synergistic effects of each component: the carbohydrate provides structural framework and glassy state, the plant extract provides surface activity and emulsification, and the flavor is encapsulated within this multi-component system at enhanced concentrations.
2Stability of the object's composition
If spray drying is used to achieve glassy state, then encapsulation can be achieved, but the process is complex, requires high temperature and high velocity gas stream, and results in porous, powdery products that are difficult to handle
Solution Approach 1:
The invention replaces the complex spray drying system (which uses high velocity gas streams, high temperature, and emulsification steps) with a simpler melt extrusion process. The extrusion process uses mechanical melting and extrusion of a homogeneous mixture, followed by cooling to form the glassy state, eliminating the need for complex spray drying equipment and high temperature processing while achieving similar encapsulation results.
Solution Approach 2:
The invention changes the processing parameters from spray drying (high temperature, high velocity gas stream, rapid evaporation) to melt extrusion (controlled heating to melting point, extrusion through die, controlled cooling). This parameter change simplifies the process, reduces energy consumption, and produces less porous, more handleable products while maintaining glassy state stability.
3Ease of manufacture
If extrusion fixation is used, then processing is simplified, but the maximum flavor load remains limited and flavor intensity is insufficient for many applications
Solution Approach 1:
Surface active plant extracts are introduced as intermediary substances that enable higher flavor loads in extrusion processes. These extracts act as emulsifiers and surfactants that facilitate the incorporation and stable dispersion of flavor encapsulates at concentrations up to 20% in the extruded product, overcoming the limitation of conventional extrusion fixation methods.
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
This approach significantly increases the maximum flavor load by up to 8% in the extrusion encapsulation composition, maintaining flavor integrity and stability at ambient temperatures, doubling or more the flavor load without adverse effects like flavor leakage or loss, thereby enhancing the cost-effectiveness and functionality of the final product.
Implementation Method 1
surface active plant extracts, especially those rich in saponins have been found to significantly increase the maximum amount of encapsulated flavor that can effectively be encapsulated in a glassy matrix
Implementation Method 2
Melt extrusion generates the glassy state mainly by cooling the melted material
Implementation Method 3
The advantages of retaining the glass form of the matrix include increased physical stability of the dense solid, reduced oxidation and loss of incorporated volatiles
Data Source
AI summary
A glassy extrusion encapsulation composition and a method of making the composition are provided. The encapsulation composition comprises an encapsulate encapsulated in a glassy matrix comprising 0.5 to 12% by weight, based on the total weight of the glassy matrix, of at least one surface active plant extract, and 88 to 99.5% of at least one carbohydrate. The addition of a surface active plant extract to a carbohydrate matrix markedly increases the load of an encapsulate in the encapsulation composition. Such glassy matrices are useful for encapsulation of encapsulates, for example, flavors and medications. A food composition containing the encapsulation composition is also provided.