Open Access
Review
Table 1
Different techniques for the extraction of oil from flaxseed.
| Techniques | Source for extraction | Strategy | Output/Yield | References |
|---|---|---|---|---|
| Supercritical CO2 extraction | Ground flaxseed | CO2 at a flow rate of 40 g/min, temp-50 °C, pressure-30 MPa, extraction time-3 hours | 35.3 g | Pradhan et al., 2010 |
| Ultrasound-assisted extraction | Flaxseed powder | The ultrasonic output power set to a desired level ranging from 0 to 100% and temperature of ±1 °C | 84.9% | Zhang et al., 2008 |
| Ultrasound-assisted extraction by immobilized enzyme | Ground flaxseed | Incubation of flaxseed with different enzyme (cellulase, pectinase, betaglucosidase, and hemicellulase) and subsequent ultrasonic extraction (45 °C, 250 W power for 30 min) | 68.1% | Long et al., 2011 |
| Super critical fluid extraction | Ground flaxseed | Extraction temperature, pressure, time and CO2 flow rate were set at 50 °C, 40,000 kPa, 2 hours and 70 g/min | 36.49 g/100 g | Khattab and Zeitoun, 2013 |
| Accelerated solvent extraction | Ground flaxseed | Solvent used −hexane, temp-200 °C and pressure-10,342 kPa | 41.90 g/100 g | Khattab and Zeitoun, 2013 |
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