Downloads: 74
Research Paper | Chemical and Process Engineering | Cameroon | Volume 9 Issue 5, May 2020
Kinetics and Thermodynamics of Total Polyphenolic Compounds Microwave Assisted Extraction from the Roots of Ximeniaamericana (Olacaceae)
Kenmogne Sidonie Beatrice | Ngassoum Martin Benoit | Tsatsop Tsague Roli Karole | Tchienou Djiobie Gertrude Eleonore | Momeni Jean | Kamdemwaffo Alain
Abstract: In this study the effect of temperature, kinetic and thermodynamic parameters of the total polyphenolics microwave assisted extraction (MAE) process of the roots of Ximeniaamericana were evaluated for different temperatures. The total polyphenolic content increased with increasing irradiation extraction time and temperature. The highest extraction temperature and longest irradiation extraction time of 80C and 120 sec resulted in the highest total polyphenolic of 5013.07 11.25 g GAE/g. DW. The kinetics of the microwave assisted extraction process was tested by pseudo- first-order, pseudo-second order and Ficks Law. It was shown that extraction of total polyphenolic of Ximeniaamericana roots could be described by the pseudo-second order kinetic model. Besides that, the result of the initial microwave assisted extraction rate (h) calculated at each microwave temperature show that the initial rate at 80C extraction temperature was almost six times higher than that of 30C; the effective diffusion coefficients (Deff) identified for different temperatures (303353K: Deff ranged from 2.215 10-13 to 7.232 10-13 m2/s) increased with increasing temperature; The dependence of the mass transfer coefficient of the microwave assisted extraction process on temperature verified by using Arrhenius model in its linearized form show a value of activation energy Eaof 14.436 kJ/mol with a high determination coefficient (R2 = 0.859, P<0.05). The thermodynamic study shows that the variations of enthalpy and entropy were positive; indicating that the process was endothermic and irreversible while Gibbs free energy was negative, indicating that extraction was spontaneous and thermodynamically favorablewith exception to extraction at 30 and 60 C.
Keywords: Total polyphenolic, Roots, Ximeniaamericana, microwave assisted extraction, kinetics, thermodynamics
Edition: Volume 9 Issue 5, May 2020,
Pages: 1718 - 1726
Similar Articles with Keyword 'kinetics'
Downloads: 0
Experimental Result Paper, Chemical and Process Engineering, India, Volume 11 Issue 7, July 2022
Pages: 488 - 493Study of the Effects of Process Parameters on High Shear Wet Granulation
Vinod V. Kenekar | Suhas B. Ghugare
Downloads: 1 | Weekly Hits: ⮙1 | Monthly Hits: ⮙1
Analysis Study Research Paper, Chemical and Process Engineering, India, Volume 13 Issue 2, February 2024
Pages: 63 - 67Kinetics of Formation and Degradation of Elastomer Matrix with New Generation Non ASTM Carbon Black
Sudarshan Daw | Rajdeep Mal | Madhumita Paul | Dr. Soumen Chakraborty