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Kinetics study of microwave-assisted brine extraction of lipid from the microalgae Nannochloropsis sp.


Citation

Zghaibi, Nour A. T. and Omar, Rozita and Mustapa Kamal, Siti Mazlina and Awang Biak, Dayang Radiah and Harun, Mohd Razif (2020) Kinetics study of microwave-assisted brine extraction of lipid from the microalgae Nannochloropsis sp. Molecules, 25 (4). art. no. 784. pp. 1-19. ISSN 1420-3049

Abstract

The kinetics of lipid extraction utilizing microwave-assisted extraction (MAE) from Nannochloropsis sp. microalgae were studied using a low cost and green solvent, namely brine (NaCl) solution. The kinetic modelling of the lipid extraction was performed to evaluate the mechanism of the lipid mass transfer using different extraction models, including Fick’s Law, First and Second-order Rate Law and the Patricelli mathematical model. The Patricelli mathematical model described the kinetics of lipid extraction well, with the highest average values of determination coefficient (R2 ≥ 0.952) and the lowest average values of mean relative percentage deviation (MRPD ≤ 8.666%). The lipid analysis indicated a positive influence of the microwave temperature and time on the quantity and quality of extracted lipids. SEM analysis of spent microalgae clearly shows an increase in the distorted cell with increase microwave temperature and time, which could be directly correlated to the mechanism of the MAE-brine technique.


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Official URL or Download Paper: https://www.mdpi.com/1420-3049/25/4/784

Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.3390/molecules25040784
Publisher: Multidisciplinary Digital Publishing Institute
Keywords: Microwave-assisted extraction; Brine; Kinetics; Lipid; Microalgae; Polyunsaturated fatty acids
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 16 Aug 2021 00:30
Last Modified: 16 Aug 2021 00:30
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/molecules25040784
URI: http://psasir.upm.edu.my/id/eprint/89521
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