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Methods for oil extraction from algae.
| Regular organic solvent extraction | Supercritical fluid extraction | |
|---|---|---|
| Advantage | Relatively high oil yield, simple equipment and easy operation. | Relatively low temperature, avoiding contact with oxygen, high efficiency. |
| Shortcoming | Toxic, volatile, not conducive to human health and environmental protection. | Expensive and high energy consumption. |
| Scope of Application | Low-value products, bioenergy. | High-value products, carotenoids, PUFAs. |
