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Optimization of Peroxidase Activity of Turnip (Brassica rapa) Using Response Surface Methodology Cover

Optimization of Peroxidase Activity of Turnip (Brassica rapa) Using Response Surface Methodology

Open Access
|Dec 2020

Abstract

The present study is focused on the determination of optimized activity conditions of peroxidase (POD) of turnip (Brassica rapa). The enzyme is extracted from turnip with 0.5M Na2HPO4 (pH7.0). Peroxidase activity is evaluated by monitoring the oxidation of guaiacol to tetraguaiacol in the presence of hydrogen peroxide (H2O2). Before the optimization of peroxidase activity from a turnip by response surface methodology (RSM), a preliminary step is conducted for each studied parameter (pH, temperature, and NaCl concentration). Further, RSM following Box-Behnken design is used in order to refine the optimization of the conditions. Response surface analysis showed that parameter values with the highest peroxidase activity are 5.9, 29.8°C, and 1.07M for pH, temperature, and NaCl, respectively. Under these experimental conditions, peroxidase activity is found to be 4027.25U/mg. The obtained experimental value agrees with that of the calculated one, indicating the pertinence of the developed model for the optimization of peroxidase activity.

DOI: https://doi.org/10.2478/aucft-2020-0017 | Journal eISSN: 2344-150X | Journal ISSN: 2344-1496
Language: English
Page range: 186 - 194
Submitted on: Jul 24, 2020
Accepted on: Oct 12, 2020
Published on: Dec 24, 2020
Published by: Lucian Blaga University of Sibiu
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year

© 2020 Amel Dahdouh, Mostapha Bachir-Bey, Djamel Edine Kati, published by Lucian Blaga University of Sibiu
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.