Microwave-assisted extraction of Vernonia amygdalina leaf for optimal recovery of total phenolic content
The microwave-assisted extraction conditions for the optimal yield of extracts and total phenolic content (TPC) from Vernonia amygdalina leaf were optimized using a face-centered central composite design of response surface methodology. The independent parameters were viz: irradiation time (5–15 m...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier GmbH
2018
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| Online Access: | http://umpir.ump.edu.my/id/eprint/21928/1/Microwave-assisted%20extraction%20of%20Vernonia%20amygdalina%20leaf%20for%20optimal.pdf |
| _version_ | 1825812209099341824 |
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| author | Alara, Oluwaseun Ruth Nour, A. H. Siti Kholijah, Abdul Mudalip Olalere, Olusegun Abayomi |
| author_facet | Alara, Oluwaseun Ruth Nour, A. H. Siti Kholijah, Abdul Mudalip Olalere, Olusegun Abayomi |
| author_sort | Alara, Oluwaseun Ruth |
| collection | UMP |
| description | The microwave-assisted extraction conditions for the optimal yield of extracts and total phenolic content (TPC)
from Vernonia amygdalina leaf were optimized using a face-centered central composite design of response surface
methodology. The independent parameters were viz: irradiation time (5–15 min), microwave power
(400–600 W), temperature (90–110 °C), and feed-to-solvent ratio (1:8–1:12 g/mL). The optimal conditions for
highest yield of extract (22.34% w/w) and TPC (102.24 mg GAE/g d.w.) were obtained at irradiation time of
8 min, microwave power of 416 W, temperature of 100 °C, and feed-to-solvent ratio of 1:8 g/mL. The quadratic
model significantly (p < 0.0001) fitted the experimental data with R2 values of 0.9664 and 0.9885 for the
responses (extraction yield and TPC), respectively. Furthermore, the efficiency of MAE was compared with
Soxhlet, it was observed that the yields, antioxidant activity and functional groups from Fourier transform
infrared (FTIR) analysis was higher than that of the Soxhlet extract. |
| first_indexed | 2024-03-06T12:25:45Z |
| format | Article |
| id | UMPir21928 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:25:45Z |
| publishDate | 2018 |
| publisher | Elsevier GmbH |
| record_format | dspace |
| spelling | UMPir219282019-09-10T03:59:44Z http://umpir.ump.edu.my/id/eprint/21928/ Microwave-assisted extraction of Vernonia amygdalina leaf for optimal recovery of total phenolic content Alara, Oluwaseun Ruth Nour, A. H. Siti Kholijah, Abdul Mudalip Olalere, Olusegun Abayomi TP Chemical technology The microwave-assisted extraction conditions for the optimal yield of extracts and total phenolic content (TPC) from Vernonia amygdalina leaf were optimized using a face-centered central composite design of response surface methodology. The independent parameters were viz: irradiation time (5–15 min), microwave power (400–600 W), temperature (90–110 °C), and feed-to-solvent ratio (1:8–1:12 g/mL). The optimal conditions for highest yield of extract (22.34% w/w) and TPC (102.24 mg GAE/g d.w.) were obtained at irradiation time of 8 min, microwave power of 416 W, temperature of 100 °C, and feed-to-solvent ratio of 1:8 g/mL. The quadratic model significantly (p < 0.0001) fitted the experimental data with R2 values of 0.9664 and 0.9885 for the responses (extraction yield and TPC), respectively. Furthermore, the efficiency of MAE was compared with Soxhlet, it was observed that the yields, antioxidant activity and functional groups from Fourier transform infrared (FTIR) analysis was higher than that of the Soxhlet extract. Elsevier GmbH 2018-04-17 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/21928/1/Microwave-assisted%20extraction%20of%20Vernonia%20amygdalina%20leaf%20for%20optimal.pdf Alara, Oluwaseun Ruth and Nour, A. H. and Siti Kholijah, Abdul Mudalip and Olalere, Olusegun Abayomi (2018) Microwave-assisted extraction of Vernonia amygdalina leaf for optimal recovery of total phenolic content. Journal of Applied Research on Medicinal and Aromatic Plants, 10. pp. 16-24. ISSN 2214-7861. (Published) https://doi.org/10.1016/j.jarmap.2018.04.004 https://doi.org/10.1016/j.jarmap.2018.04.004 |
| spellingShingle | TP Chemical technology Alara, Oluwaseun Ruth Nour, A. H. Siti Kholijah, Abdul Mudalip Olalere, Olusegun Abayomi Microwave-assisted extraction of Vernonia amygdalina leaf for optimal recovery of total phenolic content |
| title | Microwave-assisted extraction of Vernonia amygdalina leaf for optimal recovery of total phenolic content |
| title_full | Microwave-assisted extraction of Vernonia amygdalina leaf for optimal recovery of total phenolic content |
| title_fullStr | Microwave-assisted extraction of Vernonia amygdalina leaf for optimal recovery of total phenolic content |
| title_full_unstemmed | Microwave-assisted extraction of Vernonia amygdalina leaf for optimal recovery of total phenolic content |
| title_short | Microwave-assisted extraction of Vernonia amygdalina leaf for optimal recovery of total phenolic content |
| title_sort | microwave assisted extraction of vernonia amygdalina leaf for optimal recovery of total phenolic content |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/21928/1/Microwave-assisted%20extraction%20of%20Vernonia%20amygdalina%20leaf%20for%20optimal.pdf |
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