Affiliation:
1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
2. School of Chemistry, Chemical Engineering, and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
Abstract
In this study, oxidized maltodextrins with a high concentration of carboxyl groups were produced using CuSO4 as a catalyst and H2O2 as an eco-friendly oxidant. Infrared spectroscopy, proton-nuclear magnetic resonance spectroscopy, and thermogravimetric analysis were utilized to examine the structure and properties of oxidized maltodextrins. The reaction conditions were optimized in terms of oxidant content, catalyst content, temperature, pH, and reaction time. The prepared oxidized maltodextrin had a carboxyl group content of 105% under the conditions of 200% molar H2O2, 1% molar catalyst, 55 °C, initial pH = 9.7, and 2 h reaction time. In comparison to the commonly used sodium hypochlorite oxidation process, the carboxyl group content was increased by 58%.
Funder
Fundamental Research Funds for the Central Universities
Subject
Physical and Theoretical Chemistry,Catalysis,General Environmental Science
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