10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 2 2015 (April - June) Different methyl esters were synthesized using corresponding fatty acids, methanol and hydrogen peroxide as a catalyst along with sulphuric acid. The structure of newly synthesized compounds were confirmed using several spectroscopic techniques such as IR, lessThan sup greaterThan 1 lessThan /sup greaterThan H-NMR, lessThan sup greaterThan 13 lessThan /sup greaterThan C NMR, mass spectral analysis and elemental analysis. The newly synthesized ester derivatives were screened for their lessThan i greaterThan in vitro lessThan /i greaterThan antibacterial and antifungal activities. It was observed that some of these compounds had shown promising activity against several bacterial and fungal strains. SANJOGTA MESHRAM, AVINASH BHARATI AND EKTA MESHRAM Esterification, Hydrogen peroxide, Fatty acids, Antimicrobial activity 29-36