Continuous Chitosan Coating of Nanoliposomes via Simil-Microfluidics
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Solution Overview
Problem
Current methods for coating nanoliposomes with chitosan are inefficient, expensive, and lack control over the coating process, leading to instability and aggregation, making them unsuitable for industrial-scale production.
Innovation Solution
A continuous 'simil-microfluidic' process using a microfluidic device for the uniform electrostatic interaction between nanoliposomes and a chitosan solution, ensuring stable and uniform polymer coating with controlled fluid dynamics, avoiding the limitations of discontinuous techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If discontinuous coating methods are used, then coating can be performed with simple equipment, but productivity is low and the process is not suitable for industrial-scale production
Solution Approach 1:
The patent implements a continuous coating process where nanoliposome suspension and chitosan solution flow continuously through a microfluidic device, eliminating the batch processing steps of traditional methods. This continuous flow approach maintains constant coating action, significantly increasing productivity while the microfluidic design keeps the device relatively simple in structure.
2Manufacturing precision
If simple mixing methods are used for coating, then the process is easy to operate, but the coating is non-uniform leading to aggregation and instability
Solution Approach 1:
The patent introduces a microfluidic device as an intermediary between the nanoliposome suspension and chitosan solution. This device creates controlled laminar flow and ensures proper mixing through fluid dynamic interactions within the microchannels, achieving uniform coating without requiring complex external mixing equipment or manual operations.
Solution Approach 2:
The patent uses fluid flow dynamics (hydraulics) within the microfluidic device to achieve coating. The continuous flow of nanoliposome suspension and chitosan solution through the microchannels creates controlled mixing and uniform coating through hydrodynamic forces, eliminating the need for mechanical mixing while ensuring coating precision.
3Ease of manufacture
If traditional coating methods are used, then equipment requirements are simple, but the process is expensive and time-consuming
Solution Approach 1:
The patent replaces traditional mechanical mixing and coating equipment with a microfluidic system that uses controlled fluid flow to achieve coating. This substitution eliminates the need for expensive incubators, sonicators, and complex mixing apparatus while reducing processing time and operational costs, making the process more economically viable for industrial 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 process achieves stable, uniformly coated nanoliposomes with enhanced mucoadhesive properties and increased stability, suitable for industrial-scale production with high productivity and cost-effectiveness.
Implementation Method 1
The process uses a highly productive 'simil-microfluidic' technique for the polymeric coating of nano-vectors... uniform electrostatic interaction between nanoliposomes and a chitosan solution
Data Source
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AI summary
The invention relates to a continuous or semi-continuous, and therefore rapid and highly productive, process for obtaining nanoliposomes completely coated with chitosan, a biocompatible natural polymer able to increase their stability and mucoadhesive properties. The process uses a highly productive "simil-microfluidic" technique for the polymeric coating of nano-vectors. The invention also relates to the chitosan-coated nanoliposomes or nanostructures which may be obtained through the concerned process, as well as to pharmaceutical, nutraceutical, cosmetic, personal hygiene, food or coloring products containing them.