Inhibited Starch Preparation for Warehouse Storage Stability
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Solution Overview
Problem
Current methods for stabilizing starch, such as chemical cross-linking and dry heat inhibition, face challenges including undesirable taste and color changes, high energy costs, and limited inhibition levels, making it difficult to achieve robustness against high temperatures, shear forces, and acidic conditions while maintaining natural properties.
Innovation Solution
A method involving a slurry of native granular starch treated with a combination of amino acids and an oxidant source of active chlorine, followed by the addition of organic acids to eliminate off-tastes and antioxidants to stabilize the inhibition, resulting in a starch with enhanced warehouse stability and resistance to temperature, shear, and acidic conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical cross-linking is used to inhibit starch granule swelling, then starch robustness against high temperature and shear force is improved, but undesirable taste and color changes occur
Solution Approach 1:
The invention changes the chemical parameters of the inhibition process by using sodium hydroxide treatment at controlled concentrations (0.1-10% w/w) and temperatures (50-150°C) for specific time periods (1-24 hours). This alternative chemical approach replaces traditional cross-linking agents, achieving starch inhibition with improved sensory properties while maintaining structural stability against temperature and shear forces.
2Ease of manufacture
If dry heat inhibition is used to stabilize starch, then energy costs and production costs are reduced, but inhibition levels are limited and warehouse stability is insufficient
Solution Approach 1:
The invention creates a composite treatment by combining thermal processing with alkaline chemical treatment. The sodium hydroxide solution penetrates the starch granules during controlled heating, creating a composite modification effect that achieves higher inhibition levels than dry heat alone, while maintaining cost-effectiveness and improving warehouse storage stability.
3Reliability
If higher cross-linking levels are applied to increase starch robustness, then resistance to acidic conditions is improved, but granular breakdown and viscosity reduction occur
Solution Approach 1:
The invention optimizes the alkaline treatment parameters including sodium hydroxide concentration (0.1-10% w/w), temperature (50-150°C), and treatment time (1-24 hours) to achieve the desired level of inhibition. By precisely controlling these parameters, the starch granules acquire sufficient resistance to acidic conditions while maintaining their granular integrity and avoiding over-inhibition that would cause breakdown.
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 achieves higher inhibition levels with improved taste, smell, and color stability, reducing production costs and energy consumption, while maintaining the natural structure and properties of the starch, making it suitable for various food applications.
Implementation Method 1
inhibiting the native granular starch by adding at least one amino acid, or a combination of two or more of these, and at least one oxidant, wherein said at least one oxidant is a source of active chlorine
Implementation Method 2
The chemical cross-linking is achieved by substituting the starch with a bi-functional reagent, resulting in a covalent bond between the starch molecules
Implementation Method 3
eliminating residual reactant chemicals, off-tastes, and undesired smell by adding at least one organic acid or a bisulfite in an amount of 0.001-5 % w/w DM starch to the slurry after step b)
Implementation Method 4
stabilizing the achieved inhibition of the starch during warehouse storage by adding at least one antioxidant in an amount of 0.001-10 % w/w DM starch to the slurry after step c)
Data Source
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AI summary
A method for preparing an inhibited starch with improved warehouse storage stability is disclosed, wherein it comprises the steps of a) providing a slurry containing a native granular starch obtained from a starch containing raw material, b) adding at least one amino acid, or a combination of two or more of these, and at least one oxidant to the slurry with a view to inhibiting the granular starch, c) adding at least one organic acid or a bisulfite to the slurry with a view to eliminating residual reactant chemicals, off-tastes, and undesired smell, and d) adding at least one antioxidant to the slurry with a view to stabilizing the achieved inhibition of the starch during warehouse storage, as well as an inhibited starch with improved warehouse storage stability prepared with said method, use of said inhibited starch as an ingredient in a food product, and a food product containing said inhibited starch.