Nurul Jannah Abd RahmanSalina Mat RadziHanina Mohd Noor2024-05-282024-05-282015Abd Rahman, N. J., Radzi, S. M., & Noor, H. M. (2015). Dual Lipases System in Transesterification of Ethyl Ferulate with Olive Oil: Optimization by Response Surface Methodology. Asian Journal of Applied Sciences, 3(1). Retrieved from https://www.ajouronline.com/index.php/AJAS/article/view/21122321-0893767-21https://www.ajouronline.com/index.php/AJAS/article/view/2112https://oarep.usim.edu.my/handle/123456789/5964A novel and simple dual lipases system was effectively developed in attaining high performance of ferulate esters by transesterification between ethyl ferulate and olive oil. Enzyme screening revealed 1: 9 w/w of Novozym 435-Lipozyme RMIM to be the most efficient lipases ratio for the reaction synthesis. Response surface methodology (RSM) based on four-factor-five-level central composite design (CCD) was used to study interactive effects of reaction factors: time, lipase dosage, ratio substrates and temperature. A high percent conversion of 94.03 % was achieved under the optimum conditions of 12 h, 87 mg lipases, 1: 2 ratio substrates and 60 áµ’C, which compared well with the maximum predicted value of 94.83 %.enDual lipases system, transesterification, ferulate esters, optimizationArticle7731