Modelling and optimisation of Eurycoma longifolia extraction utilising a recirculating flow extractor
In this study, Tongkat Ali was extracted with a newly designed recirculating flow extractor with temperature and flow rate as the operating parameters. The optimum duration and ratio for extraction were found to be 90 min and 40:1 w/w, respectively. The determination of optimal operating parameter v...
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| Format: | Article |
| Language: | English |
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Asian Network for Scientific Information
2007
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| Online Access: | http://eprints.utm.my/7562/ http://eprints.utm.my/7562/1/Mohamad_Roji_Sarmidi_2007_Modelling_and_Optimisation_of_Eurycoma.pdf |
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| author | Mohtar, Mohd Ajib Kumaresan, Sivakumar Sarmidi, Mohamad Roji Abdul Aziz, Ramlan |
| author_facet | Mohtar, Mohd Ajib Kumaresan, Sivakumar Sarmidi, Mohamad Roji Abdul Aziz, Ramlan |
| author_sort | Mohtar, Mohd Ajib |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | In this study, Tongkat Ali was extracted with a newly designed recirculating flow extractor with temperature and flow rate as the operating parameters. The optimum duration and ratio for extraction were found to be 90 min and 40:1 w/w, respectively. The determination of optimal operating parameter value for this extractor was based on maximum percentage extract yield and solid diffusivity, Ds,. From the experiments, it was found that the temperature and flow rate that produce the highest yield and solid diffusivity value were at 90°C and 400 rpm (22.47 mL sec-1), respectively. The optimal operating parameter values were used to compare the recirculating flow extractor performance with a batch extraction at 90°C. The comparison showed that the batch extraction was able to extract more rapidly than the recirculating flow extractor. The solid diffusivity, Ds, value for the batch extraction was found to be is 3.12 × 10-11 m2 sec-1 while the recirculating flow extractor had a solid diffusivity, Ds, value of 2.98×10-11 m2 sec-1 which indicated the difference in extraction rate. However, by utilizing the recirculating flow extractor, a higher final yield than batch extraction was produced which is 7.70% (w/w) for the recirculating flow extractor and 6.67% (w/w) for the batch extraction. This is possibly caused by the higher rates of solvent losses through evaporation for batch extraction. |
| first_indexed | 2025-11-15T20:58:49Z |
| format | Article |
| id | utm-7562 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:58:49Z |
| publishDate | 2007 |
| publisher | Asian Network for Scientific Information |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | utm-75622010-06-01T15:53:26Z http://eprints.utm.my/7562/ Modelling and optimisation of Eurycoma longifolia extraction utilising a recirculating flow extractor Mohtar, Mohd Ajib Kumaresan, Sivakumar Sarmidi, Mohamad Roji Abdul Aziz, Ramlan TP Chemical technology In this study, Tongkat Ali was extracted with a newly designed recirculating flow extractor with temperature and flow rate as the operating parameters. The optimum duration and ratio for extraction were found to be 90 min and 40:1 w/w, respectively. The determination of optimal operating parameter value for this extractor was based on maximum percentage extract yield and solid diffusivity, Ds,. From the experiments, it was found that the temperature and flow rate that produce the highest yield and solid diffusivity value were at 90°C and 400 rpm (22.47 mL sec-1), respectively. The optimal operating parameter values were used to compare the recirculating flow extractor performance with a batch extraction at 90°C. The comparison showed that the batch extraction was able to extract more rapidly than the recirculating flow extractor. The solid diffusivity, Ds, value for the batch extraction was found to be is 3.12 × 10-11 m2 sec-1 while the recirculating flow extractor had a solid diffusivity, Ds, value of 2.98×10-11 m2 sec-1 which indicated the difference in extraction rate. However, by utilizing the recirculating flow extractor, a higher final yield than batch extraction was produced which is 7.70% (w/w) for the recirculating flow extractor and 6.67% (w/w) for the batch extraction. This is possibly caused by the higher rates of solvent losses through evaporation for batch extraction. Asian Network for Scientific Information 2007-08-01 Article PeerReviewed application/pdf en http://eprints.utm.my/7562/1/Mohamad_Roji_Sarmidi_2007_Modelling_and_Optimisation_of_Eurycoma.pdf Mohtar, Mohd Ajib and Kumaresan, Sivakumar and Sarmidi, Mohamad Roji and Abdul Aziz, Ramlan (2007) Modelling and optimisation of Eurycoma longifolia extraction utilising a recirculating flow extractor. Journal of Applied Sciences, 7 (15). pp. 2168-2173. ISSN 1812-5654 |
| spellingShingle | TP Chemical technology Mohtar, Mohd Ajib Kumaresan, Sivakumar Sarmidi, Mohamad Roji Abdul Aziz, Ramlan Modelling and optimisation of Eurycoma longifolia extraction utilising a recirculating flow extractor |
| title | Modelling and optimisation of Eurycoma longifolia extraction utilising a recirculating flow extractor |
| title_full | Modelling and optimisation of Eurycoma longifolia extraction utilising a recirculating flow extractor |
| title_fullStr | Modelling and optimisation of Eurycoma longifolia extraction utilising a recirculating flow extractor |
| title_full_unstemmed | Modelling and optimisation of Eurycoma longifolia extraction utilising a recirculating flow extractor |
| title_short | Modelling and optimisation of Eurycoma longifolia extraction utilising a recirculating flow extractor |
| title_sort | modelling and optimisation of eurycoma longifolia extraction utilising a recirculating flow extractor |
| topic | TP Chemical technology |
| url | http://eprints.utm.my/7562/ http://eprints.utm.my/7562/1/Mohamad_Roji_Sarmidi_2007_Modelling_and_Optimisation_of_Eurycoma.pdf |