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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...

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Main Authors: Alara, Oluwaseun Ruth, Nour, A. H., Siti Kholijah, Abdul Mudalip, Olalere, Olusegun Abayomi
Format: Article
Language:English
Published: Elsevier GmbH 2018
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/21928/1/Microwave-assisted%20extraction%20of%20Vernonia%20amygdalina%20leaf%20for%20optimal.pdf
http://umpir.ump.edu.my/id/eprint/21928/
https://doi.org/10.1016/j.jarmap.2018.04.004
https://doi.org/10.1016/j.jarmap.2018.04.004
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spelling my.ump.umpir.219282019-09-10T03:59:44Z 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 https://doi.org/10.1016/j.jarmap.2018.04.004 https://doi.org/10.1016/j.jarmap.2018.04.004
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
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
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.
format Article
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
title 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_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_sort microwave-assisted extraction of vernonia amygdalina leaf for optimal recovery of total phenolic content
publisher Elsevier GmbH
publishDate 2018
url http://umpir.ump.edu.my/id/eprint/21928/1/Microwave-assisted%20extraction%20of%20Vernonia%20amygdalina%20leaf%20for%20optimal.pdf
http://umpir.ump.edu.my/id/eprint/21928/
https://doi.org/10.1016/j.jarmap.2018.04.004
https://doi.org/10.1016/j.jarmap.2018.04.004
_version_ 1646017379307618304
score 13.211869

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