Spectral characteristics and biological activity of synthetic humic-like substances on the basis of carbohydrates

Abstract

Abstract The study of the structure and properties of synthetic analogues of humic substances is an important research task. This paper presents the results of studying the structural and group composition of the products of water-soluble fractions synthesized in the D-glucose - m-aminobenzoic acid and D-glucose - p-toluidine reaction systems using electronic and vibrational spectroscopy. The IR-Fourier transform spectroscopic study shows the similarity of the structural-group composition of the selected products with those for humic and humic-like substances of different origin. The study of growth-regulating ability confirms its presence for the products of both systems, while the aromatic fragments of m-aminobenzoic acid impart higher stimulating activity to the substances. Analysis of the structural-group composition of the products obtained in the framework of computer modelling suggests their potentially non-toxic nature, which makes further research in this direction promising.