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A generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants

By considering the absorbed power and energy based on heating power profile during extraction, a generalized model with washing coefficient (b), diffusion coefficient (k) and predictive parameter namely absorbed power density (APD) was developed for microwave-assisted extraction (MAE) at any operati...

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Main Authors: Chan, Chung-Hung, Lim, Jian-Jiun, Yusoff, R., Ngoh, Gek Cheng
Format: Article
Language:English
Published: Elsevier 2015
Subjects:
TP Chemical technology
Online Access:http://eprints.um.edu.my/13169/1/Chan_2015_152-160.pdf
http://eprints.um.edu.my/13169/
http://www.sciencedirect.com/science/article/pii/S1383586615000702
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spelling my.um.eprints.131692019-09-27T01:14:22Z http://eprints.um.edu.my/13169/ A generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants Chan, Chung-Hung Lim, Jian-Jiun Yusoff, R. Ngoh, Gek Cheng TP Chemical technology By considering the absorbed power and energy based on heating power profile during extraction, a generalized model with washing coefficient (b), diffusion coefficient (k) and predictive parameter namely absorbed power density (APD) was developed for microwave-assisted extraction (MAE) at any operational heating modes. To study the model, MAE of flavonoids from cocoa (Theobroma cacao L.) leaves was conducted using the heating modes (constant-power, two-steps-power, intermittent-power and constant-temperature) at various microwave power (100–300 W) and extraction temperature (50 °C and 70 °C). The results shows that the model (b = 0.5595 and k′ = 0.01279 mL/J) is able to predict the normalized extraction yields of MAE at any heating modes, heating power, microwave system, extraction scale and batch of plant sample with less than 4% discrepancy. The accuracy of the prediction relies on particle size of sample (0.25–0.60 mm), type of extraction solvent (85% aqueous ethanol) and solvent to feed ratio (50 mL/g). Elsevier 2015 Article PeerReviewed application/pdf en http://eprints.um.edu.my/13169/1/Chan_2015_152-160.pdf Chan, Chung-Hung and Lim, Jian-Jiun and Yusoff, R. and Ngoh, Gek Cheng (2015) A generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants. Separation and Purification Technology, 143. 152 - 160. ISSN 1383-5866 http://www.sciencedirect.com/science/article/pii/S1383586615000702
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Chan, Chung-Hung
Lim, Jian-Jiun
Yusoff, R.
Ngoh, Gek Cheng
A generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants
description By considering the absorbed power and energy based on heating power profile during extraction, a generalized model with washing coefficient (b), diffusion coefficient (k) and predictive parameter namely absorbed power density (APD) was developed for microwave-assisted extraction (MAE) at any operational heating modes. To study the model, MAE of flavonoids from cocoa (Theobroma cacao L.) leaves was conducted using the heating modes (constant-power, two-steps-power, intermittent-power and constant-temperature) at various microwave power (100–300 W) and extraction temperature (50 °C and 70 °C). The results shows that the model (b = 0.5595 and k′ = 0.01279 mL/J) is able to predict the normalized extraction yields of MAE at any heating modes, heating power, microwave system, extraction scale and batch of plant sample with less than 4% discrepancy. The accuracy of the prediction relies on particle size of sample (0.25–0.60 mm), type of extraction solvent (85% aqueous ethanol) and solvent to feed ratio (50 mL/g).
format Article
author Chan, Chung-Hung
Lim, Jian-Jiun
Yusoff, R.
Ngoh, Gek Cheng
author_facet Chan, Chung-Hung
Lim, Jian-Jiun
Yusoff, R.
Ngoh, Gek Cheng
author_sort Chan, Chung-Hung
title A generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants
title_short A generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants
title_full A generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants
title_fullStr A generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants
title_full_unstemmed A generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants
title_sort generalized energy-based kinetic model for microwave-assisted extraction of bioactive compounds from plants
publisher Elsevier
publishDate 2015
url http://eprints.um.edu.my/13169/1/Chan_2015_152-160.pdf
http://eprints.um.edu.my/13169/
http://www.sciencedirect.com/science/article/pii/S1383586615000702
_version_ 1646210127808692224
score 13.211869

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