Low Fat Oil-in-Water Emulsions via High-Pressure Homogenization
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Solution Overview
Problem
Existing processes for producing oil-in-water emulsions often require high oil content and the use of artificial emulsifiers or stabilizing carbohydrates, which limits the production of stable emulsions with reduced oil content and cream-like consistency.
Innovation Solution
A high-pressure homogenization process that reduces oil content to 30% or less without artificial emulsifiers, using a mixture of food-grade oil, water, and egg yolk or whole egg, which are subjected to pressures of at least 2000 bar to create stable oil droplets of 1-5 µm diameter, achieving a cream-like consistency without thickeners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If high-pressure homogenization is used to reduce oil content to 30% or less, then the emulsion achieves cream-like consistency and stability, but the process requires high pressure (at least 2000 bar) which increases energy consumption and equipment complexity
Solution Approach 1:
The patent applies parameter changes by systematically optimizing multiple process parameters including homogenization pressure (2000-4000 bar), temperature (5-95°C), droplet size (1-5 µm), and phase ratio (oil:water 1:2 to 1:5) to achieve stable low-fat emulsions with cream-like consistency. This multi-parameter optimization resolves the contradiction by finding the optimal pressure range that achieves the desired oil content reduction while maintaining emulsion stability.
2Quantity of substance
If artificial emulsifiers and stabilizing carbohydrates are eliminated, then the emulsion becomes more natural and healthier, but achieving stable emulsion with reduced oil content becomes more difficult
Solution Approach 1:
The patent extracts and eliminates artificial emulsifiers and stabilizing carbohydrates from the emulsion formulation, relying instead on the natural emulsifying properties of food-grade ingredients like egg yolk, milk proteins, or plant-based emulsifiers. This extraction of harmful substances is compensated by optimizing the physical parameters of the emulsion (droplet size, pressure, temperature) to maintain stability without synthetic additives.
Solution Approach 2:
The patent employs self-service by utilizing the natural emulsifying and stabilizing properties inherent in food-grade ingredients such as egg yolk lecithin, milk proteins, or plant-based emulsifiers. These natural components spontaneously perform the emulsification and stabilization functions that would otherwise require artificial additives, achieving both health benefits and emulsion stability.
3Shape
If oil droplet size is reduced to 1-5 µm for cream-like consistency, then the emulsion achieves desired texture and mouthfeel, but the homogenization process requires higher pressure and energy input
Solution Approach 1:
The patent applies parameter changes by optimizing the relationship between homogenization pressure, temperature, and resulting droplet size. By systematically adjusting these parameters within specific ranges (pressure: 2000-4000 bar, temperature: 5-95°C, droplet size: 1-5 µm), the process achieves the desired cream-like consistency while managing energy consumption through efficient parameter selection.
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 produces stable oil-in-water emulsions with small oil droplets and a cream-like consistency, maintaining stability for at least 20 days at room temperature, and allows for higher processing temperatures without additional heat treatment, resulting in a pleasant mouthfeel and reduced microbial content.
Implementation Method 1
subjecting the mixture of ingredients to high-pressure homogenization by passing the mixture of ingredients through an opening at a pressure difference of at least 2000 bar, e.g. at 3000 or at 3500 to 4000 bar
Data Source
AI summary
The invention provides a process for producing oil-in-water food-grade emulsions having an oil content of at maximum 50 % by weight (wt-%), preferably of at maximum 30 wt-%, the process comprising the steps of mixing the ingredients of an oil-in-water food-grade emulsion and subjecting the mixture of ingredients to high-pressure homogenization.