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From

Coupling Microwave-Assisted Drying and Supercritical Carbon Dioxide Extraction for Coconut Oil Processing

Armando T. Quitain, Takashi Moriyoshi, Motonobu Goto

Chemical Engineering and Science. 2013, 1(1), 12-16 doi:10.12691/ces-1-1-3
  • Figure 1. Schematic diagram of supercritical fluid extraction apparatus
  • Figure 2. Comparison between conventional and microwave-assisted hot-air drying methods of coconut at 40°C
  • Figure 3. Results of preliminary experiments on supercritical carbon dioxide extraction of coconut oil at 40°C, 20MPa
  • Figure 4. Time course of cumulative recovery of the oil at 40°C and 20MPa
  • Figure 5. HPLC-RI chromatograms showing chemical composition of the extracted oil in comparison with the two commercial virgin coconut oils and an ordinary coconut oil
  • Figure 6. Absorbance spectra indicating the clarity of the extracts in comparison with the commercial virgin coconut oil and an ordinary coconut oil
  • Figure 7. Effect of drying methods on the recovery at 40°C and 20 MPa
  • Figure 8. Effect of pressure and addition of EtOH on the recovery of coconut oil at 40°C
  • Figure 9. Comparison of extraction at temperatures of 28 and 40°C at 20MPa