Ammonia-Alkalized Inhibited Starch for Heat and Shear Stability
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Solution Overview
Problem
Existing methods for inhibiting starch granule swelling during high heat, shear forces, and acidic conditions result in undesirable taste, color, and storage instability, often requiring chemical crosslinking agents that are not favored by consumers, and alternative methods like dry heat inhibition and hypochlorite treatment face issues with high costs, hazards, and variable inhibition levels.
Innovation Solution
A method involving alkalization of a starch slurry to a pH above 10.0 with ammonia or ammonia-releasing compounds, followed by the addition of an active chlorine oxidant, and optional washing at high pH to eliminate residual oxidants, achieving enhanced inhibition and storage stability without chemical crosslinking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical crosslinking agents are used to inhibit starch granule swelling, then starch stability during high heat and shear forces is improved, but the starch requires additive declaration with E-numbers and becomes less consumer-friendly
Solution Approach 1:
The invention changes the chemical parameters of the starch by controlling pH levels and using specific oxidizing agents to create crosslinking without requiring traditional chemical crosslinking agents. This allows the starch to achieve stability while avoiding additive declaration requirements
Solution Approach 2:
The invention uses intermediaries such as oxidizing agents and pH control mechanisms to facilitate starch crosslinking indirectly, rather than using direct chemical crosslinking agents. This intermediary approach enables stability improvement while maintaining natural starch status
2Object-generated harmful factors
If dry heat inhibition is used to inhibit starch granule swelling, then chemical modification is avoided, but the process incurs high costs and presents safety hazards
Solution Approach 1:
The invention changes the physical parameters of the inhibition process by using aqueous solutions at controlled pH levels and temperatures, replacing the extreme dry heat conditions. This reduces manufacturing costs and safety hazards while achieving the same inhibition effect
Solution Approach 2:
The invention uses hydraulic systems (aqueous solutions) instead of pneumatic/dry heat systems to achieve starch inhibition. This approach reduces safety hazards associated with dry heat while maintaining effectiveness
3Object-generated harmful factors
If hypochlorite treatment is used to inhibit starch granule swelling, then chemical crosslinking is avoided, but the inhibition levels vary and storage stability is compromised
Solution Approach 1:
The invention optimizes the pH parameter to above 10.0 and controls the concentration and application timing of hypochlorite to achieve consistent inhibition levels. This parameter control eliminates the variability and storage stability issues associated with conventional hypochlorite treatment
Solution Approach 2:
The invention implements feedback control by monitoring pH levels and hypochlorite concentration to maintain optimal inhibition conditions throughout the process and storage period, ensuring consistent results
4Temperature
If starch is heated to high temperatures for processing, then thickening and texture are achieved, but granule breakdown occurs and viscosity decreases
Solution Approach 1:
The invention applies preliminary inhibition treatment to the starch before high-temperature processing. This pre-treatment creates a protective structure that prevents granule breakdown during subsequent heating, maintaining viscosity stability
Solution Approach 2:
The invention provides beforehand cushioning by creating a crosslinked network structure in the starch that absorbs and distributes the stress of high-temperature processing, preventing granule breakdown and viscosity loss
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 method produces inhibited starch with improved warehouse stability, increased viscosity in hard water, and better organoleptic properties, reducing the need for additional stabilizers and avoiding off-tastes, while maintaining high inhibition levels.
Implementation Method 1
alkalizing the slurry by adding ammonia or by adding one or more compounds having the ability to release or produce ammonia in the slurry, and adjusting the pH of the slurry to a value above 10.0
Implementation Method 2
adding at least one active chlorine oxidant to the slurry for a reaction with said ammonia
Data Source
AI summary
A method for preparing an inhibited starch, wherein it comprises the steps of a) providing a slurry containing a granular starch obtained from a starch containing raw material, b) alkalizing the slurry by adding ammonia or by adding one or more compounds having the ability to release or produce ammonia in the slurry, c) adjusting the p H of the slurry to a value above 10.0, preferably up to 12.0, and d) adding at least one oxidant to the slurry for a reaction with said ammonia; or wherein steps b) and c) are replaced with the step of alkalizing the slurry directly to a p H between 0.0 and 12.0, and the step of adding chloramine or dichloramine to the slurry, and wherein step d) is omitted; or wherein step c) is replaced with the step of adjusting the p H of the slurry to a value of between 7.0 and 10.0, and wherein step d) is followed by a step of adjusting the p H of the slurry to a value above 10.0, preferably up to 12.0, is disclosed, as well as an inhibited starch made with said method, use of the inhibited starch as an 1 ingredient in a food product, and a food product containing said inhibited starch.