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Vegetable oils are commonly obtained through the following methods:
• Cold pressing: The most natural method with high nutritional value, achieved by mechanically pressing at low temperature.
• Hot pressing: Oil yield is increased with high heat, but some nutrients may be lost.
• Solvent extraction: Uses chemical solvents (e.g., hexane) to extract oil, which is then removed from the product.
• Supercritical CO₂ extraction: Offers the purest and highest-quality oil, but is more expensive.