Sugar Ester Nanoparticle Stabilizers for Solid Dosage Forms
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Formulating solid oral dosage forms containing nanoparticles is challenging due to nanoparticle agglomeration during drying and the need for significant excipients, which limits drug loading and requires sonication for redispersibility, neither of which are physiological conditions.
Innovation Solution
The use of sugar ester nanoparticle stabilizers, such as sucrose laurate, to prevent agglomeration and ensure redispersibility of nanoparticles to their original size without additional excipients or sonication, achieved through a method involving particle size reduction and drying of nanosuspensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional nanoparticle stabilizers (surfactants, polymers) are used to prevent agglomeration during drying, then nanoparticle stability is improved, but significant amounts of excipients are required which limits drug loading
Solution Approach 1:
The invention changes the chemical parameter of the stabilizer by using sugar esters (specifically sucrose fatty acid esters) instead of conventional surfactants or polymers. This parameter change allows achieving nanoparticle stabilization with much lower excipient concentrations (0.1-5% w/v), thereby resolving the contradiction between nanoparticle stability and drug loading capacity
Solution Approach 2:
The invention employs a composite approach by combining sugar esters with hydrophilic colloids (such as gelatin, pectin, or starch) to create a dual-function stabilization system. The sugar ester provides steric stabilization while the hydrophilic colloid provides additional protective effects, achieving effective nanoparticle stabilization with minimal excipient用量, thus maintaining high drug loading
2Stability of the object's composition
If conventional stabilizers are used to maintain nanoparticle size, then redispersibility is improved, but sonication is required which is not a physiological condition
Solution Approach 1:
The sugar ester stabilizers possess self-service properties by providing inherent redispersibility without requiring external energy input like sonication. The molecular structure of sugar esters enables them to spontaneously prevent agglomeration and facilitate redispersion under physiological conditions alone, eliminating the need for sonication and meeting the ease of operation requirement
3Stability of the object's composition
If significant amounts of excipients are used to stabilize nanoparticles, then agglomeration is prevented, but device complexity increases
Solution Approach 1:
The invention extracts and eliminates the need for multiple complex excipients by using sugar esters as a single, effective stabilizing agent. This simplifies the formulation from a complex mixture of surfactants, polymers, and other excipients to a streamlined system requiring minimal components, thereby reducing formulation complexity while maintaining nanoparticle stability
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 allows for the creation of stable solid dosage forms with preserved nanoparticle size and bioavailability, maintaining redispersibility and drug loading without the need for excessive excipients or sonication, even after storage.
Implementation Method 1
These excipients stabilize nanoparticles by either electrostatic repulsion or steric stabilization via charged stabilizers or non-ionic surfactants/polymers
Implementation Method 2
the transformation of liquid nanosuspensions into dry solids can be achieved by, for example, tray drying, vacuum drying, lyophilization, spray drying, freeze drying, and spray granulation
Implementation Method 3
It is important that the drug particles return to their original nanoparticle size when the dry solids are redispersed in aqueous fluids, such as digestive juices, after oral administration
Data Source
AI summary
Solid dosage forms containing nanoparticles are prepared where sugar esters serve as nanoparticle stabilizers that prevent agglomeration of nanoparticles during preparation of the solid dosage form and allow for restoration of the original nanoparticle size of the nanoparticles upon redispersion of the solid dosage form in aqueous media.