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. 2017 Apr;54(5):1286-1292.
doi: 10.1007/s13197-017-2542-7. Epub 2017 Mar 10.

Supercritical CO2 extraction of candlenut oil: process optimization using Taguchi orthogonal array and physicochemical properties of the oil

Erna Subroto  1 , Edward Widjojokusumo  1 , Bambang Veriansyah  1 , Raymond R Tjandrawinata  1
Affiliations

Supercritical CO2 extraction of candlenut oil: process optimization using Taguchi orthogonal array and physicochemical properties of the oil

Erna Subroto et al. J Food Sci Technol. 2017 Apr.

Abstract

A series of experiments was conducted to determine optimum conditions for supercritical carbon dioxide extraction of candlenut oil. A Taguchi experimental design with L9 orthogonal array (four factors in three levels) was employed to evaluate the effects of pressure of 25-35 MPa, temperature of 40-60 °C, CO2 flow rate of 10-20 g/min and particle size of 0.3-0.8 mm on oil solubility. The obtained results showed that increase in particle size, pressure and temperature improved the oil solubility. The supercritical carbon dioxide extraction at optimized parameters resulted in oil yield extraction of 61.4% at solubility of 9.6 g oil/kg CO2. The obtained candlenut oil from supercritical carbon dioxide extraction has better oil quality than oil which was extracted by Soxhlet extraction using n-hexane. The oil contains high unsaturated oil (linoleic acid and linolenic acid), which have many beneficial effects on human health.

Keywords: Aleurites moluccana; Candlenut; Optimization; Supercritical carbon dioxide extraction; Taguchi.

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Figures

Fig. 1
Fig. 1
Extraction curve at average value of each parameter: a CO2 flow rate, b pressure, c temperature and d particle size
Fig. 2
Fig. 2
Main effects plot for oil solubility
See this image and copyright information in PMC

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