Electrostatic Fat Globule Separation for Cream Stability
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Solution Overview
Problem
Conventional methods for treating milk often result in unsatisfactory product properties, such as difficult-to-whip cream and excessive buttermilk production, due to the mechanical destruction of fat globules and changes in the fat globule membrane, leading to undesirable product characteristics and energy-intensive homogenization processes.
Innovation Solution
The method involves setting the operating parameters of a centrifuge to separate fractions of different fat globule size distributions without altering the fat globule surfaces, allowing for the production of milk fractions with optimal fat globule sizes for specific dairy applications, thereby avoiding the issues associated with homogenization and phase inversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If mechanical homogenization is used to reduce fat globule size, then creaming is reduced and texture is improved, but the fat globule membrane is destroyed and re-formed with different properties leading to undesirable product characteristics
Solution Approach 1:
The patent replaces mechanical homogenization with an electrostatic field-based separation system. Milk is passed through an electrostatic field that selectively acts on fat globules based on their size and charge characteristics, separating them without mechanical disruption of the globule membranes. This substitution of the separation mechanism preserves the natural fat globule structure while achieving the desired size distribution and creaming stability.
Solution Approach 2:
The patent changes the operating parameters of the electrostatic separator to selectively separate fat globules of different sizes. By adjusting the electric field strength, flow rate, and other parameters, the system can target specific fat globule size ranges while leaving others unaffected. This parametric control enables precise manipulation of fat globule distribution without mechanical destruction, maintaining membrane integrity while achieving desired product characteristics.
2Stability of the object's composition
If high-pressure homogenization is used to prevent creaming, then storage stability is improved, but energy consumption increases and consumer perception is negatively affected
Solution Approach 1:
The patent replaces energy-intensive mechanical high-pressure homogenization with an electrostatic field-based separation process. The electrostatic separator uses electric fields rather than mechanical pressure to achieve fat globule separation and size control. This substitution dramatically reduces energy consumption while achieving the same storage stability outcome by preserving the natural fat globule membrane structure that provides long-term stability.
3Stability of the object's composition
If mechanical fat globule comminution is used to produce small fat balls, then creaming is reduced, but the fat globule membrane is altered leading to changed aggregation behavior and undesirable product properties
Solution Approach 1:
The patent replaces mechanical comminution with electrostatic field-based separation. Instead of physically breaking apart fat globules through mechanical force, the electrostatic separator selectively separates intact fat globules based on their size and charge characteristics. This preserves the natural fat globule membrane structure and its associated aggregation behavior, avoiding the generation of harmful product properties while still achieving creaming stability.
Solution Approach 2:
The electrostatic field acts as an intermediary mechanism between the fat globules and the separation process. Rather than direct mechanical contact and disruption, the electric field mediates the separation by exerting forces on the charged surfaces of intact fat globules. This intermediary approach enables size-based separation while maintaining the integrity and natural properties of the fat globule membranes.
4Productivity
If conventional centrifugation is used to separate fat from milk, then cream is produced, but the separation efficiency is insufficient and excessive buttermilk is produced
Solution Approach 1:
The patent changes the separation mechanism from conventional centrifugal force to electrostatic field-based separation. By adjusting parameters such as electric field strength, flow rate, and electrode configuration, the system achieves much higher separation efficiency. The electrostatic separator can selectively target and separate fat globules of specific sizes while allowing the continuous phase (buttermilk) to pass through with minimal loss, dramatically improving productivity and reducing unwanted byproduct generation.
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 enables the production of milk fractions with desired fat globule sizes, improving product properties like whipping behavior, reducing creaming during storage, and enhancing the yield and texture of dairy products, while minimizing energy consumption and preserving the natural fat globule membrane.
Implementation Method 1
setting the operating parameters of the centrifuge arrangement (2, 3) are set so that fractions of different fat globule size distribution are separated from one another
Data Source
AI summary
Treating milk comprises subjecting the milk to a separation process in a centrifuge arrangement. The operating parameters of the centrifuge arrangement are set in such a way that fractions of different fat globule size distribution are separated from one another. An independent claim is also included for a milk product, obtained by the above process.