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Updated: Jul 13, 2025
08:46
Analysis and Specification of Starch Granule Size Distributions
Published on: March 4, 2021
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Benign electrolytic modifications of starch: effects on functional groups and physical properties
Pitcha Liewchirakorn1,2, Kamonwad Ngamchuea1
1School of Chemistry, Institute of Science, Suranaree University of Technology 111 University Avenue, Suranaree, Muang Nakhon Ratchasima 30000 Thailand kamonwad@g.sut.ac.th +66 (0) 44 224 637.
RSC Advances
|October 16, 2023
Summary
A novel electrolytic technology using chloride salt modifies starch efficiently. This green chemistry approach alters starch properties like size, moisture resistance, and pasting behavior for diverse applications.
Area of Science:
- Materials Science
- Electrochemistry
- Biochemistry
Background:
- Starch modification is crucial for tailoring material properties.
- Conventional methods often involve harsh chemicals or high energy input.
- Developing sustainable and cost-effective modification techniques is essential.
Purpose of the Study:
- To develop a low-cost electrolytic technology for in situ starch modification.
- To investigate the influence of electrolysis parameters on starch modification.
- To elucidate the mechanisms underlying electrolytic starch modification.
Main Methods:
- Electrolysis of starch solution with chloride salt as a redox mediator.
- Systematic variation of chloride concentration, applied voltage, and electrolysis duration.
- Characterization of modified starch using functional group analysis, particle size analysis, and physical property testing.
Main Results:
- Electrolysis introduced carbonyl and carboxyl groups onto starch.
- Starch granule median size was reduced from 15.3 μm to 13.5 μm.
- Modified starch exhibited enhanced moisture resistance, higher crystallinity, and altered pasting properties.
Conclusions:
- Electrolytic modification using chloride salt is a viable, low-cost method for starch functionalization.
- The process offers tunable control over starch properties through adjustable electrolysis conditions.
- This technology presents a sustainable alternative for producing modified starches with desirable characteristics.
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