Crosslinked Milk Protein Composition for Frying-Stable Meat Substitutes
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Solution Overview
Problem
Existing methods for producing cheese or meat substitutes fail to create a heat-stable product that maintains its structure when fried or grilled, lacking the ability to be used as a meat substitute without melting or scorching.
Innovation Solution
A process involving crumbled cheese, a native casein concentrate, a protein crosslinking enzyme, and a hydrocolloid is used to create a heat-stable milk protein product with a nanolevel fibrous microstructure, forming crosslinked casein proteins that maintain integrity during heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cheese or meat substitute methods are used, then production simplicity is maintained, but heat stability and structural integrity are poor causing melting or scorching
Solution Approach 1:
The patent uses composite materials by combining casein concentrate with hydrocolloids (such as alginate, carrageenan, or xanthan gum) to create a heat-stable matrix. This composite structure prevents melting and maintains structural integrity during heating, directly resolving the heat stability issue while adding functional components that work synergistically
Solution Approach 2:
The patent applies parameter changes by adjusting pH to specific ranges (5.2-5.9) and controlling ionic strength to optimize the interaction between casein and hydrocolloids. These parameter adjustments create optimal conditions for gel formation and heat stability, transforming the physical-chemical properties of the protein matrix
2Reliability
If protein crosslinking enzymes are added to improve heat stability, then structural integrity during heating is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent applies preliminary action by adding protein crosslinking enzymes (such as transglutaminase) before the heat treatment step. This allows the crosslinking reaction to occur in advance, creating a pre-stabilized protein network that maintains structural integrity during subsequent heating, frying, or grilling processes
Solution Approach 2:
The patent uses protein crosslinking enzymes as intermediaries that facilitate covalent bond formation between protein molecules. These enzymes act as mediators creating ε-(γ-glutamyl)lysine crosslinks, which strengthen the protein matrix and prevent structural collapse under heat stress
3Reliability
If cheese is mixed with flour or starch to improve heat stability, then frying stability is improved, but protein content and product quality are diluted
Solution Approach 1:
The patent fundamentally changes the approach by adjusting pH and ionic strength parameters to enable heat stability without dilution. By controlling the electrostatic interactions and solubility of casein through pH adjustment, the system achieves frying stability while maintaining high protein concentration and product quality
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 resulting product is stable for frying and grilling, retaining its shape and not melting or scorching, and can be used as a meat substitute, with adjustable protein, fat, and lactose content.
Implementation Method 1
treated with a crosslinking enzyme... forming covalent bonds that maintain integrity during heating
Implementation Method 2
mixed with a hydrocolloid... subjecting the mixture to a heat treatment
Data Source
Figure 1
AI summary
The present invention relates to a heat stable milk protein product. Particularly, the invention relates to a heat stable milk protein product which can be used as a meat substitute that can be heated by microwaves, fried or grilled. The present invention relates also processes for producing such heat stable milk protein products.