Modified Starch Uniform Particle Size Low Viscosity
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Solution Overview
Problem
Existing methods for modifying starches often result in high viscosity and non-uniform particle diameters, which limit their applications and efficiency in various industries.
Innovation Solution
A modified starch with a particle diameter distribution waveform exhibiting a single peak, achieved by adding a halogenated salt such as calcium chloride to the starch and subjecting it to a heating treatment, resulting in a 10 mass % paste liquid with an RVA peak viscosity that is 5% or less of the unmodified starch, and a difference between the maximum and minimum particle diameters of 2 μm or less.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing methods for modifying starches are used, then starch can be processed, but the resulting starch exhibits high viscosity and non-uniform particle diameters
Solution Approach 1:
The patent applies parameter changes by controlling the heating treatment conditions (temperature, time, and presence of halogenated salt) to transform the starch properties. Specifically, heating at 60-100°C for 1-48 hours in the presence of halogenated salt modifies the starch structure to achieve uniform particle diameters and low viscosity, directly resolving the contradiction between particle uniformity and viscosity reduction.
Solution Approach 2:
The patent creates a composite system by combining starch with halogenated salt (such as calcium chloride, sodium chloride, or potassium chloride) during heating treatment. This composite approach allows the salt to act as a modifying agent that facilitates uniform particle size reduction and viscosity control, achieving both manufacturing precision and reduced harmful viscosity effects.
2Productivity
If existing methods for modifying starches are used, then starch processing can be achieved, but the particle diameter distribution becomes non-uniform
Solution Approach 1:
The patent maintains high productivity by using moderate heating conditions (60-100°C for 1-48 hours) that are easily achievable in industrial settings, while simultaneously achieving uniform particle diameters through the combined effect of temperature control and halogenated salt presence. This resolves the contradiction by showing that precise particle control does not require excessively complex or time-consuming processes.
Solution Approach 2:
The halogenated salt acts as an intermediary substance that mediates between the heating process and the starch structure. The salt facilitates uniform particle size reduction and viscosity control during heating, enabling both efficient processing and precise particle diameter control without requiring complex equipment or extended processing times.
3Object-generated harmful factors
If halogenated salt is added and heating treatment is performed to reduce viscosity, then RVA peak viscosity decreases to 5% or less, but the process requires specific controlled conditions
Solution Approach 1:
The patent reduces viscosity to 5% or less of the original RVA peak viscosity by controlling specific parameters: heating temperature (60-100°C), heating time (1-48 hours), and the presence of halogenated salt (0.1-20 mass% relative to starch). These parameter changes achieve the desired viscosity reduction while maintaining relatively simple process conditions that do not require complex equipment or precise control systems.
Solution Approach 2:
The halogenated salt (such as calcium chloride, sodium chloride, or potassium chloride) serves as a simple, inexpensive modifying agent that can be easily added and removed. The salt facilitates the viscosity reduction process during heating and can be washed away afterward, providing an economical solution that avoids complex processing equipment or expensive catalysts while achieving the desired low viscosity effect.
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 modified starch is characterized by low viscosity and uniform particle diameter, enhancing its texture-improving effects in food applications and its usability as a base material for powderization, binder, paper, and building materials.
Implementation Method 1
a modifying by heating treatment is performed
Implementation Method 2
a 10 mass % paste liquid of the obtained modified starch has an RVA peak viscosity that is 5% or less of the RVA peak viscosity of an unmodified starch
Data Source
AI summary
To inexpensively and easily provide a modified starch having a novel property. A modified starch of which a particle diameter distribution waveform exhibits a single peak, wherein a 10 mass % paste liquid of the modified starch has an RVA peak viscosity that is 5% or less of the RVA peak viscosity of an unmodified starch serving as a raw material, and the difference between the maximum particle diameter and the minimum particle diameter is 2 μm or less. The modified starch is suitable for use as a food additive, a food texture improvement agent, a base material for powderization, a binder additive, a paper-making additive, a building material additive, etc.