Abstract
An efficient method for the synthesis of novel antioxidants in the form of ionic liquids (ILs) was described in the framework of this study. The ILs were obtained by the reaction of quaternary ammonium hydroxides with gallic acid as well as the protonation of amphoteric betaine. The following physicochemical properties of the obtained ILs were characterized: solubility in water as well as in polar and non-polar organic solvents, octanol–water partition coefficient, thermal stability, and surface activity. The investigation of bactericidal activity indicated that the synthesized gallates exhibited high efficacy against bacteria, especially against Bacillus subtilis. The DPPH radical scavenging assay confirmed the antioxidant properties of gallate ILs.
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