ArticleScientific reports2025
Electrochemical oxidation of κ-carrageenan with hydrogen peroxide and a copper electrode for green synthesis of functional polysaccharides.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Oxidation of carbohydrates and polysaccharides is crucial in the chemical industry, producing biocompatible dialdehyde crosslinkers for various applications. Conventional oxidation methods, including sodium periodate, sodium hypochlorite, TEMPO, and hydrogen peroxide, face limitations such as sensitivity to oxidant concentration, temperature, light, reaction time, pH, potential side reactions, environmental impact, and cost. To overcome these challenges, a green, safe, and simple electrochemical oxidation process for polysaccharides is reported for the first time. In this study, the oxidation process was performed by dispersing polysaccharides in heated ethanol containing hydrogen peroxide, followed by the application of an optimized voltage of 2 V in short, controlled durations using a simple two-electrode system. After completion, the reaction mixture was filtered and dried in an oven at 70 °C for 3 h. This method was specifically applied to kappa-carrageenan (k-Car). Characterization by FTIR,
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