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Effects of parameters on yield for sub-critical R134a extraction of palm oil

Mustapa, A. N. and Manan, Z. A. and Mohd. Azizi, C. Y. and Nik Norulaini, N. A. and Mohd. Omar, A. K. (2009) Effects of parameters on yield for sub-critical R134a extraction of palm oil. Journal of Food Engineering, 95 (4). pp. 606-616. ISSN 02608774

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Official URL: http://dx.doi.org/10.1016/j.jfoodeng.2009.06.025

Abstract

Extraction of palm oil from its palm mesocarp using sub-critical 1,1,1,2-tetrafluoroethane (R134a) as an alternative solvent to supercritical CO2 was studied. The effects of pressure, temperature, flowrate and sample pre-treatment method on extraction yield were examined. Dynamic method was used to determine palm oil solubility at flowrate between 0.5 and 5.0 ml/min. Extraction was performed at pressures between 45 and 100 bar which was lower than those required by CO2 solvent, and at temperatures between 40° and 80 °C. The results show that extraction yields using R134a increased with pressure and temperature, and that temperature effect (p-value = 0.0000) on palm oil solubility prevailed over that of pressure (p-value = 0.0087). The maximum yield of 66.06 w/w% was obtained at 100 bar and 80 °C which was the best pressure and temperature. Substantial oil yields at relatively lower pressure proved that sub-critical R134a is a viable alternative to CO2 for extraction of palm oil.

Item Type:Article
Uncontrolled Keywords:carbon dioxide, extraction, palm oil, R134a, solubility, sub-critical
Subjects:Q Science > QH Natural history > QH301 Biology
S Agriculture > S Agriculture (General)
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:13762
Deposited By: Ms Zalinda Shuratman
Deposited On:26 Aug 2011 04:49
Last Modified:26 Aug 2011 04:49

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