Solid Self-Emulsifying Composition for Tablet Formulation
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Solution Overview
Problem
Conventional self-emulsifying formulations for poorly water-soluble or unstable substances require special techniques during production and handling, limiting their application to liquid or soft capsule forms.
Innovation Solution
A self-emulsifying composition comprising a core particle with an oily ingredient, surfactant, and thickener, coated with a coating particle layer, which can be formulated into solid dosage forms like tablets, utilizing a granulation process in a fluidized bed to attach coating particles onto droplets of the granulation solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional self-emulsifying formulations are used, then solubility and absorption stability of poorly water-soluble substances are improved, but production complexity and handling difficulty increase, limiting dosage form options
Solution Approach 1:
The invention changes the physical state parameter of the self-emulsifying formulation from liquid to solid by incorporating it into a granule matrix. This parameter change allows the formulation to maintain its self-emulsifying properties while gaining the handling advantages and production flexibility of solid dosage forms, thereby reducing production complexity while maintaining absorption stability.
Solution Approach 2:
The invention creates a composite material system where the self-emulsifying formulation (oily ingredient, surfactant, co-surfactant) is combined with granule materials (lactose, starch, cellulose). This composite structure allows the liquid self-emulsifying system to be embedded within a solid granule matrix, enabling both improved absorption stability and simplified production handling.
2Reliability
If liquid or soft capsule forms are used for self-emulsifying formulations, then self-emulsification capability is maintained, but ease of handling and formulation flexibility deteriorate
Solution Approach 1:
The invention changes the physical state from liquid to solid granule form, improving ease of handling while maintaining self-emulsification capability through the encapsulation of the liquid self-emulsifying formulation within the solid granule structure.
Solution Approach 2:
The invention applies the nesting principle by embedding the liquid self-emulsifying formulation (oily ingredient, surfactant, co-surfactant mixture) within the solid granule matrix. The inner liquid phase is contained within the outer solid granule structure, allowing the liquid to perform its self-emulsification function while the solid granule provides easy handling properties.
3Ease of operation
If solid dosage forms like tablets are developed, then ease of handling and production flexibility are improved, but self-emulsification performance may deteriorate
Solution Approach 1:
The invention creates a composite granule structure where hydrophilic granule materials (lactose, starch, cellulose) are combined with the lipophilic self-emulsifying formulation. This composite structure maintains self-emulsification performance by preserving the oily ingredient-surfactant-co-surfactant system while embedding it in a solid granule matrix that enables tablet formulation.
Solution Approach 2:
The invention applies local quality by creating regions within the granule with different properties: the core contains the self-emulsifying formulation with oily ingredient, surfactant, and co-surfactant for emulsification activity, while the outer granule matrix provides structural integrity and tablet-formability. Each region has optimized properties for its specific function.
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 composition stabilizes absorption behavior, enhances solubility, and reduces inter-individual variability of poorly water-soluble or unstable substances by forming emulsions in the digestive tract, allowing for easy handling and formulation into tablets or granules.
Implementation Method 1
introducing droplets of a granulation solution comprising an oily ingredient, a surfactant, and a thickener into a fluidized bed where coating particles flow to attach the coating particles onto the surface of the droplets for granulation
Implementation Method 2
Self-emulsifying formulations generally refer to preparations which spontaneously form emulsions upon contact with moisture such as saliva and digestive fluids during oral administration
Data Source
Figure 1
AI summary
Provided is a self-emulsifying formulation or the like in a novel form, capable of forming a dosage form such as tablet. The self-emulsifying composition comprises a core particle comprising a useful substance, an oily ingredient, a surfactant, and a thickener; and a coating particle layer which coats the core particle.