Perovskite-type lanthanum ferrite nanoparticles were developed and used to detect acetaminophen. For this work, lanthanum ferrite nanoparticles were synthesized by the combustion technique using industrial sugar molasses with lanthanum nitrate and ferric nitrate. To verify the electrochemical properties of an electrode modified with these perovskites, cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were used. During the experiment, phosphate buffer solution was used. Preliminary tests will show promising results on the electrocatalytic effect of lanthanum ferrrite obtained from a synthesis assisted with molasses of industrial origin.