Branching Enzyme EC 2.4.1.18 for Bread Cohesiveness and Meltability
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Solution Overview
Problem
Current methods for producing bread often result in increased cohesiveness, poor meltability, and a crispy texture, which are undesirable for achieving a soft and swallowable bread product.
Innovation Solution
The use of branching enzyme EC 2.4.1.18, derived from Geobacillus stearothermophilus, in combination with other enzymes and agents like α-amylase, maltogenic amylase, and sugar alcohols, to improve cohesiveness and texture properties of bread, measured by compressive stress waveforms and sensory evaluations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If materials such as α-amylase, maltogenic amylase, glucan hydrolases, phospholipase, galactolipase, emulsifier, oligosaccharide, or sugar alcohol are used to suppress aging of bread and soften the bread, then the bread becomes softer and aging is suppressed, but the cohesiveness increases, causing poor meltability and crispy texture
Solution Approach 1:
The patent changes the chemical parameters of starch modification by introducing branching enzyme (EC 2.4.1.18) that creates α-1,6 linkages, fundamentally altering the starch structure from linear to branched configurations. This parameter change in starch architecture provides aging suppression while maintaining low cohesiveness, resolving the contradiction between softness and meltability
Solution Approach 2:
The branching enzyme acts as an intermediary substance that modifies starch structure without directly increasing cohesiveness. By introducing α-1,6 linkages as an intermediate structural element, the enzyme enables aging suppression while the branched structure itself provides the beneficial low-cohesiveness property, mediating between the conflicting requirements
2Shape
If highly branched cyclic dextrin (Cluster Dextrin) is added to bread, then chewy texture is achieved, but cohesiveness is not reduced and no improvement in meltability is observed
Solution Approach 1:
The patent changes the molecular structure parameter of starch by introducing branching enzyme that creates α-1,6 linkages, transforming the starch from linear to branched configurations. This structural parameter change produces chewy texture through enhanced starch gelatinization while simultaneously reducing cohesiveness due to the branched architecture, achieving both texture improvement and cohesiveness reduction
3Stability of the object's composition
If conventional enzymes and agents are used to soften bread, then softness is achieved, but meltability and crispy texture deteriorate
Solution Approach 1:
The patent fundamentally changes the starch structure parameter by introducing branching enzyme that creates α-1,6 linkages. This parameter change produces softness through enhanced gelatinization while the branched structure reduces molecular chain entanglement, thereby maintaining meltability and crispy texture that would otherwise deteriorate with conventional softening agents
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 approach effectively reduces cohesiveness, enhances meltability, and improves swallowability of bread, providing a softer and more palatable texture, while preventing caving and maintaining sensory quality.
Implementation Method 1
A branching enzyme (EC 2.4.1.18, hereinafter, also referred to as 'BE') is a transferase (6-α-glucanotransferase) that acts on starch. Also, this enzyme is a branching (branch-forming) enzyme that synthesizes α-1,6 linkages in polysaccharide composed of glucose, such as starch or glycogen.
Data Source
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AI summary
A cohesiveness-improving agent for bread and other grain flour puffed food products, comprising branching enzyme as an active component. In one embodiment, the cohesiveness-improving agent further includes at least one selected from the group consisting of α-amylase, maltogenic amylase, glucan 1,4-α-maltotriohydrolase, glucan 1,4-α-maltotetraohydrolase, phospholipase, galactolipase, emulsifier, oligosaccharide, and sugar alcohol. A stickiness-preventing agent, a meltability-improving agent, a swallowability-improving agent, and a caving-preventing agent, which contains branching enzyme as an active component. According to the cohesiveness-improving agent of the present invention, it is possible to improve the quality, such as reducing the cohesiveness, for bread and other grain flour puffed food products.