| SM ISO690:2012|
CEACÎRU, Mihail; GONTA, Maria; GUŢU, Iacob; CEACÎRU, Cristina; DUCA, Gheorghe. Functionalization of chitosane with carboxyl and organic acids. In: The Environment and the Industry SIMI 2019 Book of abstracts. Ediția a 22-a, Book of abstracts, 26-27 septembrie 2019, București. București, România: National Research and Development Institute for Industrial Ecology ECOIND, 2019, pp. 28-29.
|The Environment and the Industry
Ediția a 22-a, Book of abstracts, 2019
Conferința "The Environment and the Industry" |
București, Romania, 26-27 septembrie 2019
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
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.
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.
antioxidants, chitosan, dihydroxyfumaric acid, Functionalization