Micronized Starch Particle Size and Crystallinity Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Native starches have limitations in industrial applications due to insolubility in cold water, loss of viscosity, and thickening power after cooking, which are not effectively addressed by existing physical modification methods.
Innovation Solution
Micronization of starch to achieve an average particle size of less than 5 µm with a degree of polymerization greater than 100, while maintaining at least 20% crystallinity of the base granular starch, using dehydration and micronization in an oxygen-free environment to enhance water solubility and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If physical modification methods are used to improve water solubility, then water solubility is improved, but viscosity and thickening power are lost
Solution Approach 1:
The starch granules are segmented into smaller particles through micronization, reducing particle size to less than 5 μm. This segmentation increases the surface area to volume ratio, improving water solubility while preserving the molecular structure necessary for viscosity and thickening power.
Solution Approach 2:
The patent changes the particle size parameter of starch from larger granular form to micronized form with average particle size less than 5 μm. This parameter change improves water solubility while the controlled degree of polymerization (>100) and retained crystallinity (>20%) preserve viscosity and thickening properties.
2Ease of operation
If starch granules are reduced in size, then water solubility is improved, but crystallinity is lost
Solution Approach 1:
The micronization process applies partial action by reducing particle size to less than 5 μm without completely breaking down the crystalline structure. The controlled processing maintains at least 20% crystallinity while achieving improved water solubility through size reduction.
Solution Approach 2:
The patent simultaneously controls multiple parameters: particle size (reduced to <5 μm), degree of polymerization (maintained >100), and crystallinity (retained >20%). This multi-parameter control achieves water solubility improvement while preserving structural stability.
3Length of moving object
If mechanical attrition is used to reduce particle size, then particle size is reduced, but structural integrity deteriorates
Solution Approach 1:
The patent applies controlled parameter changes during mechanical attrition, optimizing the balance between particle size reduction and structural preservation. The process achieves average particle size less than 5 μm while maintaining degree of polymerization greater than 100 and crystallinity greater than 20%, thereby preserving structural integrity.
Solution Approach 2:
The micronization process applies continuous useful action by progressively reducing particle size through controlled mechanical attrition without interrupting the preservation of molecular structure. This continuous process maintains the balance between size reduction and structural integrity throughout the treatment.
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 micronized starch exhibits improved water solubility, retention of crystallinity, and stability, with enhanced gelatinization properties and increased crushing strength in tablet formulations, overcoming the limitations of native starches.
Implementation Method 1
Physical modification also includes mechanical attrition to alter the physical size of starch granules
Implementation Method 2
dehydration and micronization in an oxygen-free environment to enhance water solubility and structural integrity
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
The present application is related to a micronized starch with an average particle size of less than 5 µm and a degree of polymerization greater than 100, wherein the micronized starch exhibits at least 20% of the crystallinity of the base granular starch.