Enzymatic Stabilization of Oat Protein Against Acidic Coagulation
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Solution Overview
Problem
Oat-based non-dairy drinks face issues with protein instability and coagulation when exposed to acidity, leading to consumer rejection, and there is a need for gluten-free products that are cost-effective and stable during heating and acidic conditions.
Innovation Solution
A process involving the preparation of oat flour, mixing with water, adding glycosidases, and subsequent treatment with proteases, deamidases, and transglutaminases to create a stable, gluten-free liquid food product that remains stable under heat and acidic conditions without the use of additives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If proteolytic enzymes are used to improve protein solubility and heat stability, then protein stability is improved, but bitter taste is generated which is rejected by consumers
Solution Approach 1:
The patent applies parameter changes by controlling the pH range (5.0-7.0) and temperature (40-60°C) during enzymatic treatment to optimize protein solubility while preventing bitter taste formation. This involves adjusting process parameters to achieve the desired balance between stability and sensory quality
Solution Approach 2:
The patent uses a combination of enzymes that mimics natural protein modification processes, creating a more natural solution that avoids the bitter taste associated with conventional proteolytic enzyme treatment while achieving similar stability improvements
2Reliability
If additives such as acidity regulators or stabilizers are added to solve plant protein instability, then protein stability is improved, but consumer rejection increases due to health concerns and perceived unnaturalness
Solution Approach 1:
The patent employs endogenous enzymes naturally present in the plant material or added in small amounts to trigger self-modification of proteins. This self-service approach allows the system to stabilize proteins through natural biochemical processes without requiring external additives, thereby maintaining consumer acceptance while achieving stability
Solution Approach 2:
The patent changes the pH parameter to an alkaline range (pH 9-11) during processing to improve protein stability and prevent coagulation, while avoiding the need for stability additives that consumers may reject
3Reliability
If pure oats are used to produce gluten-free oat bases, then gluten-free properties are achieved, but production cost increases by 15% or more
Solution Approach 1:
The patent extracts and removes gluten proteins from conventional oats through enzymatic treatment and filtration processes. This allows the use of standard, lower-cost oats rather than expensive pure gluten-free oats, while still achieving gluten-free final products suitable for celiac consumers
Solution Approach 2:
The patent discards the gluten fraction from oat processing through separation techniques, recovering the gluten-free matrix that can be used to produce affordable gluten-free oat bases. This approach converts a contaminant into a separable component, reducing raw material costs
4Reliability
If vegetable drinks are heated to improve stability, then heat stability is improved, but protein coagulation occurs leading to loss of homogeneity and consumer rejection
Solution Approach 1:
The patent applies preliminary enzymatic treatment to modify proteins before heat processing. This pre-modification of proteins through controlled enzymatic hydrolysis or cross-linking prepares the protein structure to resist coagulation during subsequent heating, maintaining homogeneity while achieving heat stability
Solution Approach 2:
The patent changes the pH parameter to an alkaline range (pH 9-11) which fundamentally alters protein charge and conformation, preventing coagulation during heat treatment. This parameter change allows heating to proceed without the usual protein denaturation and precipitation that causes heterogeneity
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 results in a gluten-free, stable liquid food product that maintains organoleptic properties and is resistant to thermal and acidic shocks, suitable for all consumers, including those with gluten intolerance or dairy allergies.
Implementation Method 1
adding at least one glycosidase to mixture B, and heating mixture B
Implementation Method 2
the use of proteolytic enzymes to improve proteins solubility, heat stability and resistance to precipitation in acidic environments
Implementation Method 3
adding at least one deamidase to mixture B
Implementation Method 4
adding at least one transglutaminase to mixture B
Implementation Method 5
heating mixture B to a maximum of 80° C.
Implementation Method 6
lowering the temperature of mixture C or the liquid portion of mixture C to a maximum of 30° C.
Data Source
AI summary
A process for preparing a liquid food product comprising obtaining an oat flour by milling peeled oat grain; mixing the oat flour with water to obtain mixture B; adding at least one glycosidase and heating to a maximum of 80° C., obtaining mixture C comprising a liquid portion containing particles in suspension and a precipitating portion; lowering the temperature of mixture C to a maximum of 30° C. and adding a combination of at least a protease, a deamidase and a transglutaminase to obtain mixture D; incubating mixture D; and separation of the liquid portion and the precipitating portion of mixture D; or separation of the liquid portion and the precipitating portion of mixture C; lowering the temperature of the liquid portion to a maximum of 2° C. and adding at least a protease, a deamidase and a transglutaminase to obtain liquid portion D; and incubating liquid portion D.