Electrochemical sensor for amino acids based on gold nanoparticles/macroporous carbon composites modified glassy carbon electrode

► Electrochemical sensor based on gold nanoparticles/macroporous (GNPs-MPC) composites. ► The GNPs-MPC/GCE showing excellent electrocatalytic activity toward the oxidation of l-tryptophane and l-tyrosine. ► The modified electrode exhibiting outstanding analytical performance for the two amino acids.