Phytosterol Dispersion Stability via High-Temperature Homogenization
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Solution Overview
Problem
Current methods for producing aqueous phytosterol dispersions result in unstable products with high emulsifier content, limited shelf life, and unpredictable cholesterol-lowering effects, failing to achieve significant phytosterol concentrations and stability in food and pharmaceutical applications.
Innovation Solution
A process involving mixing phytosterols and emulsifiers with an aqueous medium at temperatures above the melting point of phytosterols, followed by homogenization and cooling, to create a stable emulsion that maintains high phytosterol concentrations and stability, using a broad range of food-grade emulsifiers with low ratios, and subsequent dehydration for powdered forms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If high amounts of emulsifiers are used to stabilize phytosterol dispersions, then dispersion stability is improved, but the phytosterol content in the final product decreases and the product becomes less economical
Solution Approach 1:
The invention changes the temperature parameter to above the melting point of phytosterols (typically 100-200°C) during homogenization. This parameter change transforms phytosterols from a solid state that resists dispersion to a liquid state that disperses more easily, allowing for lower emulsifier usage while maintaining stability. The high temperature reduces the interfacial tension and improves the wetting of phytosterol particles by the aqueous phase, thereby reducing the amount of emulsifier needed to maintain dispersion stability.
Solution Approach 2:
The invention employs periodic heating and cooling cycles during the dispersion process. The phytosterol-emulsifier-aqueous mixture is heated above the melting point of phytosterols for homogenization, then cooled to form the final stable dispersion. This periodic temperature variation allows the system to achieve both good dispersibility (at high temperature) and stability (at lower temperature), reducing the overall emulsifier requirement while maintaining high phytosterol content.
2Ease of manufacture
If phytosterols are dispersed in aqueous media at room temperature, then the process is simple, but the dispersions are unstable and settle quickly
Solution Approach 1:
The invention introduces a temperature parameter change, heating the phytosterol-emulsifier-aqueous mixture above the melting point of phytosterols during homogenization. This temporary parameter change enables effective dispersion by reducing the viscosity and improving the fluidity of phytosterols, allowing them to be properly distributed throughout the aqueous phase. After homogenization, the mixture is cooled to form a stable dispersion that maintains its structure at lower temperatures.
Solution Approach 2:
The invention utilizes the phase transition of phytosterols from solid to liquid state by heating above their melting point during the homogenization process. This phase transition is critical because liquid phytosterols can be more effectively dispersed and emulsified in the aqueous phase. After the dispersion is formed, cooling the mixture causes partial solidification that helps stabilize the dispersion structure, preventing settling while maintaining the benefits of the homogenized state.
3Ease of manufacture
If phytosterols are dispersed using conventional methods, then the process is straightforward, but the cholesterol-lowering effect is unpredictable and limited
Solution Approach 1:
The invention changes the temperature parameter to above the melting point of phytosterols during homogenization, which fundamentally alters the dispersion characteristics. This parameter change ensures that phytosterols are dispersed as fine, uniform particles throughout the aqueous phase, maximizing their surface area and bioavailability. The consistent high-temperature homogenization process produces reproducible dispersion quality, leading to predictable and reliable cholesterol-lowering effects in clinical applications.
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 yields highly stable aqueous phytosterol dispersions with significantly higher cholesterol-lowering effects and extended shelf life, allowing for high phytosterol concentrations and broad emulsifier usage, enhancing their incorporation into food and pharmaceutical products.
Implementation Method 1
homogenizing the emulsion obtained in step a) in a homogenizer at a pressure of 30 to 300 bars
Implementation Method 2
cooling the homogenized mixture of step b) to obtain a dispersion of phytosterol or phytosterols in water
Data Source
AI summary
The invention relates to a method for the production of highly stable aqueous dispersions of phytosterols, phytostanols and derivatives thereof, which allows the use of a wide range of emulsifiers in relatively small concentrations in relation to the phytosterols and which allows the preparation of dispersions with high concentrations of phytosterols. Said dispersions are obtained using a method in which one or more phytosterols, an aqueous medium and one or more emulsifiers are dispersed in a disperser at a temperature of at least 140 °C in order to obtain an emulsion and the resulting emulsion is subsequently cooled in order to obtain a dispersion of sterols in an aqueous medium.