Double Emulsions Stabilized by Egg Yolk and Triglyceride Crystals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing food emulsion technologies face challenges in creating stable water-in-oil-in-water emulsions with low fat content that do not rely on multiple emulsifiers, particularly avoiding the use of synthetic compounds like PGPR and monoglycerides, while maintaining the taste and stability of full-fat products, and allowing the presence of egg yolk for taste and labeling purposes.
Innovation Solution
A food composition comprising a water-in-oil-in-water emulsion with an oil phase containing vegetable oil and triglyceride fat crystals that crystallize between 58°C and 72°C, along with a secondary emulsifier like OSA-modified starch, and the addition of egg yolk, which simplifies the process by eliminating the need for additional emulsifiers and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If PGPR and monoglycerides are used as emulsifiers to stabilize water-in-oil-in-water emulsions, then emulsion stability is improved, but the use of artificial ingredients increases and process complexity increases
Solution Approach 1:
The invention extracts and eliminates synthetic emulsifiers (PGPR, monoglycerides) from the formulation, replacing them with natural alternatives. Specifically, the patent uses a combination of egg yolk (containing natural phospholipids and proteins) and food-grade gellan gum to provide emulsion stabilization without artificial ingredients, thereby simplifying the ingredient list and reducing labeling requirements while maintaining stability
Solution Approach 2:
The invention enables the emulsion system to self-stabilize using naturally occurring components. Egg yolk provides natural emulsifying properties through its phospholipid and protein content, while gellan gum contributes to network formation and structural stability. This self-service approach eliminates the need for additional synthetic emulsifiers and complex processing steps
2Stability of the object's composition
If heating and cooling steps are used to form fat crystals for primary emulsion stabilization, then emulsion stability is improved, but energy consumption increases
Solution Approach 1:
The invention performs preliminary emulsification at ambient or refrigeration temperatures using egg yolk and gellan gum before any cooling step. The egg yolk emulsifies the oil and water phases to form a stable primary emulsion structure, and gellan gum begins forming a gel network. Subsequent cooling then simply crystallizes the fat within this pre-formed stable structure, rather than requiring heating to melt fat first and then cooling to crystallize it for emulsion formation
Solution Approach 2:
The invention changes the temperature parameter from high-temperature processing (heating to melt fat, then cooling to crystallize) to low-temperature or ambient processing. The emulsion is formed and stabilized at refrigeration temperatures (4-10°C) or ambient temperatures, where egg yolk and gellan gum provide sufficient stabilization, and fat crystallization occurs naturally during storage or with minimal cooling, eliminating the need for energy-intensive heating cycles
3Stability of the object's composition
If multiple emulsifiers are used to create stable double emulsions with low fat content, then emulsion stability is improved, but the number of ingredients increases
Solution Approach 1:
The invention merges multiple emulsifying functions into a single ingredient: egg yolk. Egg yolk contains phospholipids (particularly lecithin), proteins, and other emulsifying components that work synergistically to stabilize both the water-in-oil primary emulsion and the final water-in-oil-in-water double emulsion. This single ingredient replaces what would traditionally require multiple separate emulsifiers including PGPR, monoglycerides, and other additives
Solution Approach 2:
Egg yolk serves multiple functions simultaneously: it acts as the primary emulsifier for oil-water mixing, provides secondary emulsification for double emulsion formation, contributes to foam stability, and provides textural properties. Gellan gum adds additional multi-functionality by providing gel network formation, viscosity control, and structural stabilization. This multi-functionality reduces the total number of ingredients needed while achieving comprehensive emulsion 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 results in a stable emulsion with reduced fat content that mimics the taste and texture of full-fat products, maintaining stability for several months without phase separation, while minimizing the use of artificial ingredients and reducing process complexity and energy usage.
Implementation Method 1
triglyceride fat crystals that crystalize between 58°C and 72°C
Data Source
AI summary
A food composition in the form of a water-in-oil-in water emulsion comprising water; an oil phase comprising vegetable oil which is liquid at 20°C and a water-in-oil emulsifier comprising fat crystals, wherein the fat crystals are triglycerides or mixtures of triglycerides that crystallize at a temperature of between 58 and 72°C and wherein the fat crystals are present in an amount of from 0,5 to 15 wt%, based on the weight of the oil phase, wherein the oil phase is present in an amount of from 5 to 76 wt%, based on the weight of the composition; oil-in-water emulsifier, not being egg yolk and comprising less than 5 wt% phospholipids, present in an amount of from 0,2 to 6 wt%, based on the weight of the composition; egg yolk. Process to prepare this food composition wherein the egg yolk is combined with the water-in- oil-in-water emulsion.