So, which raw materials are more suitable for physical pressing equipment?
The oil yield of physical pressing is directly related to the oil content of the raw material. Generally speaking, oil crops with an oil content of 30% or more are more suitable for physical pressing .
Peanuts : The oil yield can reach about 40%, and the squeezed peanut oil has a rich aroma and complete nutrition.
Sesame : Rich in sesamin and sesamol, physical pressing can retain the flavor and active ingredients to the greatest extent, suitable for the high-end small packaging market.
Sunflower seeds : The oil yield is stable, and the squeezed sunflower oil has a clear color and a soft taste.
For some oils with high-end market positioning and outstanding nutritional value, the advantages of physical pressing are more obvious:
Walnut : The squeezed walnut oil is rich in unsaturated fatty acids and DHA precursors, and is very popular among consumers.
Flaxseed : Physical pressing can retain high content of α-linolenic acid, which is beneficial to cardiovascular health.
Coconut and olive : The high-end edible oil market almost all adopts physical pressing to ensure natural quality.
Physical pressing does not use chemical solvents, the oil is purer and is suitable for:
Organic oil producers : meet the certification requirements for chemical residue-free.
Healthy food processing companies : ensuring the nutrition and safety of oils and fats.
Small boutique oil factories : cater to the trend of consumption upgrading and create differentiated high-end oil brands.
index | Physical pressing | Solvent leaching |
---|---|---|
Craftsmanship | Mechanical extrusion, simple process | Use chemical solvent (n-hexane) |
Oil yield | About 85% (depending on the raw materials) | More than 95% |
Oil quality | High nutrient retention and pure flavor | The oil needs to be further refined to remove the residue |
Applicable production capacity | Small and medium production capacity, low investment cost | Large-scale industrial production requires higher investment |
Safety and environmental protection | No chemical residue, in line with green food standards | Solvents have potential residual and environmental pressure |
👉If you are pursuing high quality and health value, physical pressing is recommended; if you are pursuing extreme oil yield and large-scale cost advantages, solvent extraction is recommended.
Oilseeds with low oil content (such as soybeans and rice bran): more suitable for solvent extraction to increase oil yield.
Ultra-large-scale production : The solvent extraction process has more cost advantages.
Screw oil press : suitable for mainstream oil crops such as peanuts, sunflower seeds, and sesame.
Hydraulic oil press : suitable for high-end small-capacity oil crops such as sesame and walnut.
Complete pressing production line : covering raw material pretreatment, pressing, filtration, and refining, has served more than 400 oil refinery customers worldwide.
Our equipment has passed CE and ISO quality certification to ensure compliance with international market standards.
Q1: What is the general oil yield of physical pressing?
👉 Generally, it can reach 80%-90% of the theoretical oil content of the raw materials, depending on the type of oil and pretreatment process.
Q2: Which is more suitable for a small oil mill: a screw oil press or a hydraulic oil press?
👉 The screw oil press is suitable for continuous production and has a higher oil yield; the hydraulic oil press is suitable for small batches of high-end oils and has better oil quality.
Q3: Does physically pressed oil need to be refined?
👉 Yes. Crude oil still contains a small amount of impurities and usually requires refining processes (degumming, deacidification, decolorization, and deodorization) to become a finished oil that meets food standards.
Physical pressing equipment is particularly suitable for oilseeds with high oil content, outstanding nutritional value, and a high-end market position. Choosing our oil press not only helps you achieve efficient oil yields, but also helps you create a safe, healthy, and differentiated high-end oil brand.
👉 Whether you're looking to open a small oil refinery or upgrade a large-scale production line, QIE Group can help you design a suitable solution. Contact us now for free equipment configuration recommendations and oil yield calculations!