A process of preparing an L-tyrosine and/or L-cysteine sensor comprising a substrate coated with a metal oxide modified molecularly imprinted conducting polymer (MOMICP), comprising the steps of: (a) electropolymerizing pyrrole monomer in the presence of template of amino acid selected from the group consisting of L-tyrosine, L-cysteine and a combination thereof to be imprinted in 20 ml volume of acetonitrile containing tetrabutyl ammonium perchlorate in the concentration ranging between 0.01 to 0.1 M and trifluoacetic acid in a volume ranging between 0.5 to 35 μl at a deposition potential ranging from 0.8 to 0.9V vs Ag/AgCl for a period in the range of 55 to 65 s onto a glassy carbon electrode surface to obtain molecularly imprinted conducting polymer (MICP) film based electrode; (b) leaching out the template from the electrode as obtained in step (a) by electrochemical over-oxidation in the presence of 0.08 - 0.1M NaOH at a potential ranging between 0.8 to 1.2V vs Ag/AgCl for a minimum of 100 times at a scan rate of 40 - 70mV/s followed by washing by cycling in phosphate buffer of pH 2 for a minimum of 75 times in the potential ranging between 0 to 0.9V vs Ag/AgCl at a scan rate in the range of 75 to 125 mV/s and subsequently stabilizing in phosphate buffer of pH 5.5 at a potential ranging between 0-0.9 V for a minimum of 20 times at a scan rate in the range of 50 to 70mV/s to obtain the template leached MICP, or dual template leached MICP film coated electrode; (c) depositing metal selected from a group consisting of Cu 2+, Hg 2+, Pd 2+, Au 3+, Pt 4+ on to the template leached and stabilized MICP or dual template leached MICP electrode as obtained in step (b) by holding the electrode potentiostatically in the range of -0.28 to -0.32V for a period ranging between 4.5 to 5 seconds followed by anodically scanning at a potential in the range of 0 to 0.9V to obtain respective metal oxide modified molecularly imprinted conducting polymer film coated electrode to be used as an L-tyrosine and/or L-cysteine sensor. (a) electropolymerizing pyrrole monomer in the presence of template of amino acid selected from the group consisting of L-tyrosine, L-cysteine and a combination thereof to be imprinted in 20 ml volume of acetonitrile containing tetrabutyl ammonium perchlorate in the concentration ranging between 0.01 to 0.1 M and trifluoacetic acid in a volume ranging between 0.5 to 35 μl at a deposition potential ranging from 0.8 to 0.9V vs Ag/AgCl for a period in the range of 55 to 65 s onto a glassy carbon electrode surface to obtain molecularly imprinted conducting polymer (MICP) film based electrode; (b) leaching out the template from the electrode as obtained in step (a) by electrochemical over-oxidation in the presence of 0.08 - 0.1M NaOH at a potential ranging between 0.8 to 1.2V vs Ag/AgCl for a minimum of 100 times at a scan rate of 40 - 70mV/s followed by washing by cycling in phosphate buffer of pH 2 for a minimum of 75 times in the potential ranging between 0 to 0.9V vs Ag/AgCl at a scan rate in the range of 75 to 125 mV/s and subsequently stabilizing in phosphate buffer of pH 5.5 at a potential ranging between 0-0.9 V for a minimum of 20 times at a scan rate in the range of 50 to 70mV/s to obtain the template leached MICP, or dual template leached MICP film coated electrode; (c) depositing metal selected from a group consisting of Cu 2+, Hg 2+, Pd 2+, Au 3+, Pt 4+ on to the template leached and stabilized MICP or dual template leached MICP electrode as obtained in step (b) by holding the electrode potentiostatically in the range of -0.28 to -0.32V for a period ranging between 4.5 to 5 seconds followed by anodically scanning at a potential in the range of 0 to 0.9V to obtain respective metal oxide modified molecularly imprinted conducting polymer film coated electrode to be used as an L-tyrosine and/or L-cysteine sensor.