Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model.
Recovery of phytosterol from roselle (Hibiscus sabdariffa L.) seeds via supercritical carbon dioxide extraction modified with ethanol was investigated at pressures of 200–400 bar, temperatures from 40 to 80 ◦C and at supercritical fluid flow rates from 10 to 20 ml/min. It was found that an entrainer...
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| Format: | Article |
| Language: | English English |
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The Institution of Chemical Engineers.
2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/15988/ http://psasir.upm.edu.my/id/eprint/15988/1/Optimization%20of%20supercritical%20fluid%20extraction%20of%20phytosterol%20from%20roselle%20seeds%20with%20a%20central%20composite%20design%20model.pdf |
| _version_ | 1848842834062344192 |
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| author | Nyam, K. L. Tan, Chin Ping Lai, Oi Ming Long, K. Che Man , Yaakob |
| author_facet | Nyam, K. L. Tan, Chin Ping Lai, Oi Ming Long, K. Che Man , Yaakob |
| author_sort | Nyam, K. L. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Recovery of phytosterol from roselle (Hibiscus sabdariffa L.) seeds via supercritical carbon dioxide extraction modified with ethanol was investigated at pressures of 200–400 bar, temperatures from 40 to 80 ◦C and at supercritical fluid flow rates from 10 to 20 ml/min. It was found that an entrainer such as ethanol could enhance the solubility and
extraction yield of roselle seed oil from the seed matrix, compared to values obtained using supercritical CO2. After a
typical run (holding period of 30 min, continuous flow extraction of 3 h), the results indicate that the oil recovery was optimal with a recovery of 108.74% and a phytosterol composition of 7262.80mgkg−1 at relatively low temperature of 40 ◦C, a high pressure of 400 bar and at a high supercritical fluid flow rate of 20 ml/min in the presence of 2 ml/min EtOH as entrainer. The solubility of roselle seed oil increased with temperature at the operating pressures of 200, 300 and 400 bar. Supercritical fluid extraction involved a short extraction time and the minimal usage of small amounts of entrainer in the CO2. |
| first_indexed | 2025-11-15T08:05:25Z |
| format | Article |
| id | upm-15988 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T08:05:25Z |
| publishDate | 2010 |
| publisher | The Institution of Chemical Engineers. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-159882015-12-16T08:23:17Z http://psasir.upm.edu.my/id/eprint/15988/ Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. Nyam, K. L. Tan, Chin Ping Lai, Oi Ming Long, K. Che Man , Yaakob Recovery of phytosterol from roselle (Hibiscus sabdariffa L.) seeds via supercritical carbon dioxide extraction modified with ethanol was investigated at pressures of 200–400 bar, temperatures from 40 to 80 ◦C and at supercritical fluid flow rates from 10 to 20 ml/min. It was found that an entrainer such as ethanol could enhance the solubility and extraction yield of roselle seed oil from the seed matrix, compared to values obtained using supercritical CO2. After a typical run (holding period of 30 min, continuous flow extraction of 3 h), the results indicate that the oil recovery was optimal with a recovery of 108.74% and a phytosterol composition of 7262.80mgkg−1 at relatively low temperature of 40 ◦C, a high pressure of 400 bar and at a high supercritical fluid flow rate of 20 ml/min in the presence of 2 ml/min EtOH as entrainer. The solubility of roselle seed oil increased with temperature at the operating pressures of 200, 300 and 400 bar. Supercritical fluid extraction involved a short extraction time and the minimal usage of small amounts of entrainer in the CO2. The Institution of Chemical Engineers. 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/15988/1/Optimization%20of%20supercritical%20fluid%20extraction%20of%20phytosterol%20from%20roselle%20seeds%20with%20a%20central%20composite%20design%20model.pdf Nyam, K. L. and Tan, Chin Ping and Lai, Oi Ming and Long, K. and Che Man , Yaakob (2010) Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. Food and Bioproducts Processing, 88 (2-3). pp. 239-246. ISSN 0960-3085 Hibiscus sabdariffa. Phytosterols - analysis. Supercritical fluid extraction. English |
| spellingShingle | Hibiscus sabdariffa. Phytosterols - analysis. Supercritical fluid extraction. Nyam, K. L. Tan, Chin Ping Lai, Oi Ming Long, K. Che Man , Yaakob Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. |
| title | Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. |
| title_full | Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. |
| title_fullStr | Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. |
| title_full_unstemmed | Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. |
| title_short | Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. |
| title_sort | optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. |
| topic | Hibiscus sabdariffa. Phytosterols - analysis. Supercritical fluid extraction. |
| url | http://psasir.upm.edu.my/id/eprint/15988/ http://psasir.upm.edu.my/id/eprint/15988/1/Optimization%20of%20supercritical%20fluid%20extraction%20of%20phytosterol%20from%20roselle%20seeds%20with%20a%20central%20composite%20design%20model.pdf |