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Extraction of tocopherol-enriched oils from Kalahari melon and roselle seeds by supercritical fluid extraction (SFE-CO2).

Kar, Lin Nyam and Tan, Chin Ping and Karim, Roselina and Lai, Oi Ming and Long, Kamariah and Che Man, Yaakob (2010) Extraction of tocopherol-enriched oils from Kalahari melon and roselle seeds by supercritical fluid extraction (SFE-CO2). Food Chemistry, 119 (3). pp. 1278-1283. ISSN 0308-8146

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Official URL: http://dx.doi.org/10.1016/j.foodchem.2009.08.007

Abstract

Tocopherol-enriched oil was extracted by supercritical fluid extraction of carbon dioxide (SFE-CO2) from Kalahari melon and roselle seeds. The SFE-CO2 process was optimised using response surface methodology(RSM) with central composite design (CCD). Three SFE-CO2 parameters namely extracting pressure,extracting temperature, and flow rate of carbon dioxide were examined. The optimal SFE-CO2 conditions were determined and the quadratic response surfaces were drawn from the mathematical models. The optimal SFE-CO2 conditions for the extraction tocopherol-enriched oil from Kalahari melon seeds were: extracting pressure 290 bar, extracting temperature 58C, and flow rate of carbon dioxide 20 ml/min. The optimum conditions for roselle seeds were extracting pressure 200 bar, extracting temperature 80C, and flow rate of carbon dioxide 20 ml/min. These optimum conditions yielded tocopherol concentration of 274.74 and 89.75 mg/100 g oil from Kalahari seed and roselle seed, respectively. No significant(P > 0.05) differences were obtained between the experimental and predicted values.

Item Type:Article
Keyword:Supercritical fluid extraction (SFE-CO2); Kalahari melon seed oil; Roselle seed oil; Response surface methodology (RSM); Tocopherol concentration.
Subject:Supercritical fluid extraction
Subject:Tocopherol
Subject:Roselle
Faculty or Institute:Faculty of Biotechnology and Biomolecular Sciences
Publisher:Elsevier Ltd
DOI Number:10.1016/j.foodchem.2009.08.007
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.foodchem.2009.08.007
ID Code:14684
Deposited By: Nida Hidayati Ghazali
Deposited On:02 Aug 2012 04:49
Last Modified:18 Apr 2014 05:03

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