What is an oil press

Definition: An oil press is a mechanical device that extracts oil from oily plant seeds (such as peanuts, rapeseed, sesame, sunflower, corn germ, coconut, palm kernel, soybean, etc.) through physical pressure or chemical methods. It replaces the inefficient traditional manual oil pressing mode and becomes the core tool for modern edible oil production.

Core role:

• Efficient oil extraction: The residual oil rate can be as low as 5% -8% (manual pressing residual oil rate can reach 15% -20%)
• Retain nutrients: Cold pressing technology can avoid high temperature damage to vitamins and antioxidants in oils
• Scale adaptation: covering home workshops to industrial production lines (daily processing capacity of 50kg-50 tons)

How does the oil press work? Revealing the three mainstream technologies

Spiral pressing method

• Principle: By rotating and squeezing oil through a spiral shaft, the pressure can reach 50MPa (equivalent to 500 atmospheres)
• Advantages: High oil efficiency, low residual oil rate (≤ 8%), suitable for high-oil crops such as peanuts and rapeseed
• Representative model: Commercial fully automatic spiral oil press (PLC intelligent control)

Hydraulic pressing method

• Principle: Using a hydraulic system to push the piston to apply pressure, the pressure is stable but the cycle is long
• Advantages: Low oil temperature (≤ 60 ℃), suitable for high-end oils such as cold-pressed walnut oil and flaxseed oil
• Representative model: Laboratory-grade low-temperature oil pressing equipment

Solvent leaching method

• Principle: Dissolve the grease in the oil with n-hexane, and then recover the solvent through evaporation
• Advantages: Residual oil rate < 1%, industrial-grade high-yield preferred (mainly soybean oil and corn oil)
• Dispute point: Solvent residue needs to be strictly tested (national standard requirement ≤ 50ppm)

Is cold-pressed oil really healthier?

Data comparison revealed

1 .Cold press vs Hot press:Core differences, indicators, cold-pressed oil (≤ 60 ℃), hot-pressed oil (120-180 ℃)

Nutritional components, vitamin E retention rate ≥ 90%, high temperature destruction of more than 30%, flavor, retaining natural fruity aroma, producing a burnt aroma (Maillard reaction)

Oil yield, low (requires high-quality raw materials), increased by 15% -20%. Applicable oils include sesame, flaxseed, olive, peanut, rapeseed, and soybean

2. Is the high price of cold-pressed oil reasonable?

Cost factor: The price of cold press is 30% -50% higher than that of hot press, and low moisture content raw materials need to be selected

Health Premium: Cold-pressed oil contains 2-3 times more polyphenols than hot-pressed oil (with stronger antioxidant capacity)

How to choose a suitable oil press for oneself?

Optional parameters of oil press machine

Material Priority: The screw should be made of alloy steel (hardness HRC≥55), with a life expectancy of more than 8000 hours.

Widespread use of oil presses

Future Trend of Oil Press: Intelligent and Green

• IoT upgrade: 50% of oil presses will support remote monitoring by 2025 (e.g., real-time view of residual oil rate, equipment health status).
• Zero-emission technology: exhaust gas purification (activated carbon filtration) + oil residue recycling (feed/biofuel) becomes standard
• The Miniaturization Revolution: The Rise of Community Shared Oil Pressing Stations, Where Consumers Can Bring Their Own Raw Materials and Pick Them Up On The Go

Frequently Asked Questions

• Do oil presses destroy nutrients?
• Data: Retention rate of vitamin E in cold pressed oil >90%
• How is the oil residue treated?
• Option: peanut/sesame residue can be used to make pastries, and rapeseed residue can be fermented into organic fertilizer
• How to buy equipment
• Fuder oil press has this many years of industry experience to provide customers with satisfactory pre-sale and after-sale service, and your inquiry is always welcome.