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Kinetics studies on effects of extraction techniques on bioactive compounds from Vernonia cinerea leaf

Alara, Oluwaseun Ruth and Nour, A. H. (2018) Kinetics studies on effects of extraction techniques on bioactive compounds from Vernonia cinerea leaf. Journal of Food Science and Technology. pp. 1-9. ISSN 0975-8402 (In Press)

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Abstract

Recently, unconventional methods especially microwave-assisted hydrodistillation extraction (MAHE) is being used as an alternative technique for extracting bioactive compounds from plant materials due to its advantages over conventional methods such as Soxhlet extraction (SE). In this study, bioactive compounds were extracted from Vernonia cinerea leaf using both MAHE and SE methods. In addition, the kinetic study of MAHE and SE methods were carried out using first- and second-order kinetic models. The results obtained showed that MAHE can extract higher yield of bioactive compounds from V. cinerea leaf in a shorter time and reduced used of extracting solvent compared with SE method. Based on the results obtained, second-order kinetic models can actually describe the extraction of bioactive compounds from V. cinerea leaf through MAHE with extraction rate coefficient of 0.1172 L/gmin and extraction capacity of 1.0547 L/g as compared to SE with 0.0157 L/gmin and 1.1626 L/g of extraction rate coefficient and extraction capacity, respectively. The gas chromatography–mass spectrometry analysis of the oil showed the presence of numerous heavy fractions in the oil obtained through MAHE as compared with the SE method. Moreover, the electric consumption and environmental impacts analysis of the oil suggested that MAHE can be a suitable green technique for extracting bioactive compounds from V. cinerea leaf.

Item Type: Article
Uncontrolled Keywords: Microwave-assisted hydrodistillation Bioactive compounds Soxhlet Kinetic model Extraction capacity Extraction coefficient
Subjects: T Technology > TP Chemical technology
Faculty/Division: Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow
Faculty of Chemical & Natural Resources Engineering
Depositing User: Noorul Farina Arifin
Date Deposited: 14 Jan 2019 08:39
Last Modified: 14 Jan 2019 08:39
URI: http://umpir.ump.edu.my/id/eprint/23778
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