- PII
- S3034618525080059-1
- DOI
- 10.7868/S3034618525080059
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume 61 / Issue number 8
- Pages
- 400-413
- Abstract
- The electrocatalytic oxidation of potato starch with potassium and sodium iodate in a two-chamber electrolytic cell with in situ oxidant regeneration on electrodes made of lead dioxide and glassy carbon in an acidic medium has been studied, depending on current density, substrate concentration, oxidant, and reaction temperature. The conditions for the production of oxidized starch, its dialdehyde (DAC), were determined: the electrolysis time was 120 min, the ultrasonic treatment time was 30 min, the substrate concentration was 13.3 g/l, the KIO oxidizer was 0.93 g/l, the current density was 25 mA/cm, the carbonyl group content for PbO was 48% and for glassy carbon 56%. The products were identified by IR and NMR spectroscopy and X-ray diffractometry. It has been established that the temperature regime and ultrasound treatment of the initial starch have a significant effect on the periodate oxidation process. Analysis of the IR spectra shows that after electrochemical oxidation of starch, a new absorption band appears in the spectrum of the oxidized sample at 1730 cm, related to valence vibrations of the C=O bond of aldehydes. The kinetics of accumulation of starch oxidation products has been investigated. X-ray diffraction has shown a change in the ratio between the crystalline component amylose and starch amylopectin during periodate oxidation.
- Keywords
- окисление крахмала электрокаталитическое окисление диальдегид крахмала диоксид свинца стеклоуглерод
- Date of publication
- 25.02.2026
- Year of publication
- 2026
- Number of purchasers
- 0
- Views
- 16
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