Microwave-assisted extraction of phenolics from Hibiscus sabdariffacalyces : kinetic modelling and process intensification
Hibiscus sabdariffa is a multi-cropping system endowed with wide ranges of benefits to humans. Being a plant rich in phenolic compounds, the process intensification of extraction method used for recovering the phenolic compounds from this essential plant is inevitable to easily proffer keen informat...
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2019
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| Online Access: | http://umpir.ump.edu.my/id/eprint/25203/1/Microwave-assisted%20extraction%20of%20phenolics%20from%20hibiscus%20sabdariffacalyces%20.pdf |
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| author | Alara, Oluwaseun Ruth Nour, A. H. |
| author_facet | Alara, Oluwaseun Ruth Nour, A. H. |
| author_sort | Alara, Oluwaseun Ruth |
| collection | UMP |
| description | Hibiscus sabdariffa is a multi-cropping system endowed with wide ranges of benefits to humans. Being a plant rich in phenolic compounds, the process intensification of extraction method used for recovering the phenolic compounds from this essential plant is inevitable to easily proffer keen information on the extraction behaviours. Thus, the process intensification and kinetic behaviour of microwave-assisted extraction (MAE) for recuperating total phenolics (TP) content from H. sabdariffa calyces were investigated. The impacts of MAE factors such as solid/sample ratio, microwave power and temperature at varied irradiation time were studied. The effective diffusivity was also estimated. In addition, the extract was characterized to tentatively assign the phenolics using Liquid chromatography tandem mass spectrometry of quadrupole time-of-flight (LC-ESI-MS-MS). The achieved results clearly indicated that the MAE process intensification was acheived with TP content of 70.53 mg GAE/g extract in 3 min at solvent/sample ratio of 14:1 mL/g, microwave power of 500 W and 60 °C of temperature where the highest effective diffusivity coefficient was obtained. Out of the two considered kinetic models (second-order rate and power law), the second-order rate model best describes the MAE process intensification with higher coefficients of determination (R2 > 0.99). Moreover, an aggregate of 77 phenolic compounds was assigned in the extract of H. sabdariffa calyx; signifying the wider potentials of the extract industrially. Thus, this study clearly outlined that H. sabdariffa calyx is an embodiment of diverse phenolic compounds; indicating its potential in pharmaceutical and food industries. |
| first_indexed | 2024-03-06T12:33:45Z |
| format | Article |
| id | UMPir25203 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:33:45Z |
| publishDate | 2019 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir252032020-02-28T07:51:48Z http://umpir.ump.edu.my/id/eprint/25203/ Microwave-assisted extraction of phenolics from Hibiscus sabdariffacalyces : kinetic modelling and process intensification Alara, Oluwaseun Ruth Nour, A. H. QD Chemistry QK Botany TP Chemical technology Hibiscus sabdariffa is a multi-cropping system endowed with wide ranges of benefits to humans. Being a plant rich in phenolic compounds, the process intensification of extraction method used for recovering the phenolic compounds from this essential plant is inevitable to easily proffer keen information on the extraction behaviours. Thus, the process intensification and kinetic behaviour of microwave-assisted extraction (MAE) for recuperating total phenolics (TP) content from H. sabdariffa calyces were investigated. The impacts of MAE factors such as solid/sample ratio, microwave power and temperature at varied irradiation time were studied. The effective diffusivity was also estimated. In addition, the extract was characterized to tentatively assign the phenolics using Liquid chromatography tandem mass spectrometry of quadrupole time-of-flight (LC-ESI-MS-MS). The achieved results clearly indicated that the MAE process intensification was acheived with TP content of 70.53 mg GAE/g extract in 3 min at solvent/sample ratio of 14:1 mL/g, microwave power of 500 W and 60 °C of temperature where the highest effective diffusivity coefficient was obtained. Out of the two considered kinetic models (second-order rate and power law), the second-order rate model best describes the MAE process intensification with higher coefficients of determination (R2 > 0.99). Moreover, an aggregate of 77 phenolic compounds was assigned in the extract of H. sabdariffa calyx; signifying the wider potentials of the extract industrially. Thus, this study clearly outlined that H. sabdariffa calyx is an embodiment of diverse phenolic compounds; indicating its potential in pharmaceutical and food industries. Elsevier Ltd 2019-10-01 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/25203/1/Microwave-assisted%20extraction%20of%20phenolics%20from%20hibiscus%20sabdariffacalyces%20.pdf Alara, Oluwaseun Ruth and Nour, A. H. (2019) Microwave-assisted extraction of phenolics from Hibiscus sabdariffacalyces : kinetic modelling and process intensification. Industrial Crops and Products, 137. pp. 528-535. ISSN 0926-6690. (Published) https://doi.org/10.1016/j.indcrop.2019.05.053 https://doi.org/10.1016/j.indcrop.2019.05.053 |
| spellingShingle | QD Chemistry QK Botany TP Chemical technology Alara, Oluwaseun Ruth Nour, A. H. Microwave-assisted extraction of phenolics from Hibiscus sabdariffacalyces : kinetic modelling and process intensification |
| title | Microwave-assisted extraction of phenolics from Hibiscus sabdariffacalyces : kinetic modelling and process intensification |
| title_full | Microwave-assisted extraction of phenolics from Hibiscus sabdariffacalyces : kinetic modelling and process intensification |
| title_fullStr | Microwave-assisted extraction of phenolics from Hibiscus sabdariffacalyces : kinetic modelling and process intensification |
| title_full_unstemmed | Microwave-assisted extraction of phenolics from Hibiscus sabdariffacalyces : kinetic modelling and process intensification |
| title_short | Microwave-assisted extraction of phenolics from Hibiscus sabdariffacalyces : kinetic modelling and process intensification |
| title_sort | microwave assisted extraction of phenolics from hibiscus sabdariffacalyces kinetic modelling and process intensification |
| topic | QD Chemistry QK Botany TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/25203/1/Microwave-assisted%20extraction%20of%20phenolics%20from%20hibiscus%20sabdariffacalyces%20.pdf |
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