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Effect of particle size and co-extractant on Momordica charantia extract yield and diffusion coefficient using supercritical CO2

Aris, Noor Aiysah and Zaini, Ahmad Syahmi and Mohd. Nasir, Hasmida and Idham, Zuhaili and Vellasamy, Yuvitha and Che Yunus, Mohd. Azizi (2018) Effect of particle size and co-extractant on Momordica charantia extract yield and diffusion coefficient using supercritical CO2. Malaysian Journal of Fundamental and Applied Sciences, 14 (3). pp. 368-373. ISSN 2289-5981

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Official URL: https://doi.org/10.11113/mjfas.v14n3.1086

Abstract

Supercritical carbon dioxide (SC-CO2) is a fluid with high diffusivity and low viscosity which can penetrate deep into the solid particle efficiently compared to liquid or gas. SC-CO2 commonly used as a green solvent in the modern extraction of bioactive compound from plants. Sometimes, a co-solvent was added in the system to increase solvent polarity or mix a co-extractant with dried sample to improve solute’s transport properties. Hence, the aim of this study was to determine Momordica charantia extract yield with different mean particle size as well as diffusion coefficient, De in the extraction process with and without co-extractant. Different mean particle sizes used were 0.2, 0.3, 0.5 and 0.7 mm at constant operating condition (20 MPa, 65 oC and 4 mL/min). A ratio 1:3 of pure ethanol was used in the extraction process with co-extractant. Based on the results, mean particle size of 0.3 mm gave the highest extract yield, 3.32% and 1.34% with and without co-extractant respectively. Whereas, the value of De at 0.3 mm mean particle size, with and without co-extractant are 8.820 x 10-12 and 7.920 x 10-12 m2/s respectively. Therefore, 0.3 mm is the best mean particle size to produce highest Momordica charantia extract yield and De value in SC-CO2 extraction with co-extractant.

Item Type:Article
Uncontrolled Keywords:particle size, diffusion coefficient
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:84254
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:16 Dec 2019 11:22
Last Modified:16 Dec 2019 11:22

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