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SM ISO690:2012 CEACÎRU, Mihail, GONTA, Maria, GUŢU, Iacob, CEACÎRU, Cristina, DUKA, Gh.. Functionalization of chitosane with carboxyl and organic acids. In: The Environment and the Industry: SIMI 2019 Book of abstracts, 26-27 septembrie 2019, București. București, România: National Research and Development Institute for Industrial Ecology ECOIND, 2019, Ediția a 22-a, Book of abstracts, pp. 28-29. ISSN 1843-5831. DOI: https://doi.org/10.21698/simi.2019.ab07 |
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The Environment and the Industry Ediția a 22-a, Book of abstracts, 2019 |
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Conferința "The Environment and the Industry" București, Romania, 26-27 septembrie 2019 | |||||
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DOI: https://doi.org/10.21698/simi.2019.ab07 | |||||
Pag. 28-29 | |||||
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Introduction Chitin occupies second place after cellulose and is among the most widespread Figure 1. The reaction mechanism of chitosan grafting to dihydroxyfumaric acid in 100 ml of 0.5% acetic acid, shake with the magnetic stirrer until the chitosan solubilizes. After that, ascorbic acid (1.10 g) is added and the mixture is heated for 3 hours at 100 ° C. After completion of the reaction time, the mixture is precipitated, filtered, dried under vacuum. Figure 2. Funcționalizarea chitosanului cu acidul ascorbic, raport echimolar, t= 3 h, t= 100 °C that the antiradical power of the functionalized copolymer is 2.5 times higher than pure dihydroxyfumaric acid. These composites are to be used to inhibit the formation of N-nitrosamines in drug-nitrosation. established that the antiradical activity of the copolymer is 16.7% higher than pure ascorbic acid at the same concentration of AAs. It has been demonstrated a functionalization of chitosan with dihydroxyfumaric acid. The antiradical power of the functionalized copolymer was determined. Intermediate and final compounds have been demonstrated by IR, UV and H1-NMR spectra. increasing the antioxidant power of natural reducers.
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Cuvinte-cheie antioxidants, chitosan, dihydroxyfumaric acid, Functionalization |
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