Novel Quaternary Ammonium Derivatives Based on Apple Pectin.

ABSTRACT: New quaternary ammonium derivatives (quats) based on apple pectin (PA) were synthesized by the chemical modification of native polysaccharides with various quaternization mixtures containing epichlorohydrin (ECH) and a tertiary amine. Pectin derivatives (QPAs) were studied by elemental analysis, conductometric titration, Fourier-transform infrared spectroscopy (FTIR), and ¹³C nuclear magnetic resonance (¹³C NMR). Viscosity measurements enabled the evaluation of the viscosity average molar mass (M_v) for the unmodified polysaccharide, as well as its intrinsic viscosity ([η]) value. Dynamic light scattering (DLS) analysis revealed that the PA and its quats formed aggregates in an aqueous solution with either a unimodal (PA) or bimodal (QPAs) distribution. Scan

SUBMITTER: Stanciu MC 

PROVIDER: S-EPMC11644282 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature