Protein-Polyuronide Conjugates for pH-Stable Emulsions
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Solution Overview
Problem
Existing emulsifiers like lecithins and mono- and diglycerides are criticized by consumers, and proteins as emulsifiers have stability issues at extreme pH and temperature conditions, limiting food processing and application.
Innovation Solution
A protein-polyuronide conjugate is formed through a covalent bond between a plant protein (potato or rapeseed) and a polyuronide, preferably pectin, using a Maillard reaction, with partial or full esterification of polyuronide carboxylic acid groups to enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional emulsifiers (lecithins, mono- and diglycerides) are used, then emulsion stability is achieved, but consumer acceptance decreases due to criticism of additives
Solution Approach 1:
The patent replaces conventional emulsifiers with a naturally occurring alternative: a complex formed by mixing a protein-containing ingredient (such as milk protein) with a polysaccharide-containing ingredient (such as pectin or guar gum). This naturally-derived complex performs the emulsification function without requiring synthetic or processed emulsifiers, thereby maintaining emulsion stability while eliminating consumer concerns about additives.
2Object-affected harmful factors
If proteins are used as emulsifiers, then consumer acceptance improves due to natural ingredients, but stability decreases at extreme pH and temperature conditions
Solution Approach 1:
The patent combines two natural ingredients - a protein-containing ingredient and a polysaccharide-containing ingredient - to form a complex that leverages the complementary strengths of both components. The protein provides natural emulsification properties acceptable to consumers, while the polysaccharide component enhances stability across a broader range of pH and temperature conditions. This synergistic combination resolves the contradiction between naturalness and stability.
Solution Approach 2:
The invention creates a composite emulsifying system by forming a complex between protein and polysaccharide molecules. This composite structure combines the amphiphilic properties of proteins with the gel-forming and stabilizing characteristics of polysaccharides, resulting in an emulsifier that maintains both consumer appeal (natural ingredients) and robust stability under varying processing and storage conditions.
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 conjugate provides increased stability against pH and temperature variations, forming stable emulsions with small oil droplets, suitable for food and cosmetic products.
Implementation Method 1
A protein-polyuronide conjugate is formed through a covalent bond between a plant protein (potato or rapeseed) and a polyuronide, preferably pectin, using a Maillard reaction
Data Source
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AI summary
The invention relates to protein-polyuronide conjugates, wherein at least one polyuronide is bonded to a protein by means of a covalent bond and the protein is of plant origin. The invention further relates to creaming-stable edible emulsions, beverage syrups, and ready-to-drink beverages, to the use of protein-polyuronide conjugates to produce foods and cosmetic or medical products, to the use of protein-polyuronide conjugates as emulsifiers, to a method for producing protein-polyuronide conjugates, and to the protein-polyuronide conjugates produced by means of the method.