Multi-layered Particles for Lipophilic Compound Delivery
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Solution Overview
Problem
Lipophilic bioactive compounds face challenges in absorption due to poor water solubility and hydrophobic nature, leading to reduced bioavailability and stability in conventional oral dosage forms, necessitating improved encapsulation techniques for controlled release and protection.
Innovation Solution
Development of particles with a protein-based shell partially surrounding a bioactive compound, coated with a polysaccharide, which enhances stability, bioavailability, and controlled release, using methods like nano-emulsion formation and spray drying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lipophilic compounds are used in conventional oral dosage forms, then therapeutic activity is achieved, but water solubility and bioavailability are poor
Solution Approach 1:
The patent employs a multi-layered nested structure where the lipophilic compound is first encapsulated within a protein-based shell, forming a core particle. This core is then further encapsulated within a polysaccharide coating, creating a nested core-shell architecture. This nested design allows the hydrophobic compound to be protected and solubilized through multiple hydrophilic layers, dramatically improving water solubility and bioavailability while maintaining therapeutic efficacy.
Solution Approach 2:
The invention utilizes composite material construction by combining biocompatible protein materials (such as whey protein isolate, soy protein, or gelatin) with polysaccharide materials (such as chitosan, alginate, or dextran). This composite approach creates a multi-functional encapsulation system where the protein shell provides initial stabilization and the polysaccharide coating enhances water solubility, controlled release, and biocompatibility, thereby resolving the solubility-efficacy contradiction.
2Reliability
If lipophilic compounds are administered orally, then therapeutic purpose is pursued, but absorption is rate-limited due to hydrophobic nature
Solution Approach 1:
The patent fundamentally changes the physical-chemical parameters of the lipophilic compound by encapsulating it within hydrophilic protein and polysaccharide matrices. This parameter transformation converts the compound from a hydrophobic, slow-absorbing state to a hydrophilic, rapidly absorbable nanoemulsion or micellar system. The modified particles exhibit enhanced wettability, dissolution rate, and intestinal permeability, thereby accelerating absorption while achieving therapeutic purposes.
Solution Approach 2:
The protein-based shell and polysaccharide coating form flexible, biocompatible membranes that envelop the lipophilic compound. These thin-film encapsulations provide controlled permeability, allowing rapid release and absorption of the active compound in the gastrointestinal tract while protecting it from degradation. The flexible structure adapts to physiological conditions, enhancing absorption speed without compromising therapeutic efficacy.
3Reliability
If conventional encapsulation techniques are used, then protection is provided, but stability and controlled release are insufficient
Solution Approach 1:
The patent divides the encapsulation system into distinct functional segments: an inner protein-based shell providing primary protection and stabilization, and an outer polysaccharide coating providing secondary protection, solubility enhancement, and controlled release functionality. This segmentation allows each layer to perform its specialized function optimally, resulting in superior overall stability and protection compared to single-layer conventional encapsulation.
Solution Approach 2:
The multi-layered protein-polysaccharide encapsulation system provides multiple functions simultaneously: physical protection from degradation, enhancement of water solubility, control of release kinetics, improvement of bioavailability, and enhancement of biocompatibility. This multi-functional design surpasses conventional single-function encapsulation techniques, providing comprehensive stability and controlled release for lipophilic compounds.
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 protein-based shell and polysaccharide coating improve the bioavailability and stability of lipophilic compounds, allowing for controlled release and protection from environmental factors, enhancing their therapeutic or diagnostic efficacy.
Implementation Method 1
a cationic polymer interacting with at least a portion of a protein-based shell
Implementation Method 2
a coating comprising a polysaccharide encapsulating the at least one shelled compound
Implementation Method 3
mixing the compound and the solvent with a protein, or a polysaccharide, or both, thereby obtaining a nano-emulsion
Implementation Method 4
evaporating the solvent, thereby obtaining a particle
Data Source
AI summary
Multi-layered particles and compositions comprising a compound are disclosed. Processes of preparing the particles and compositions and uses thereof are also disclosed.