Pressing methods for some main material

Pressing Methods for Some Main Material
This article is mainly inrtoducing some useful tips for cooking oil seeds pressing methods.The main raw materials is mainly including the fellowing oil seeds: peanut /groundnut, sunflower seeds,soybean seeds,rapeseeds ,sesame seeds,cotton seeds and so on.

Soybean oil press machine

Soybeans: There are two ways of extruding soybean oil. They are hot pressing and cold pressing. (1) Hot Pressing:  Soybeans – Selecting – Prepressing – Heating -- Pressing.
First select soybeans and remove foreign particles, then soften the material by breaking and adding water of 7- 8% and
then steam them to 115C, beans will be ready for pressing.
(2) Cold Pressing:Soybeans -- Selecting-- Pressing (in case of adequate water content).

Rapeseed oil press machine

Rape Seeds: Methods of hot pressing and cold pressing can also be used to extruding rapeseed oil. Hot pressing is recommended for the reason that oil extracted by the method of hot pressing is of higher quality and higher oil output rate.
(1) Hot Pressing:  Rapeseeds – Selecting – Prepressing – Heating -- Pressing.
When using the method of hot pressing, to remove foreign particles by selection, then check water content as described above , in
case of too dry.  Add 2.5-3% of water, normally two times extruding is enough.
(2) Cold Pressing:  Rapeseeds -- Selecting-- Pressing (in case of adequate water content).
When using the method of cold pressing, pre-press and heat the seeds after selecting the material. Add 2-3% .of water and await
till look coffee color and temperature 110- 120C,then ready for pressing.

Peanut oil press machine

Groundnuts Kernel: Cold and hot pressing are both available, but hot pressing methods have better effect than cold pressing. Firstly crack or pre-press groundnut kernels then steam them for 1.5-2 hours, temperature should control about 120C and the water content control about 3%. Normal pressing starts at temperature of 85C or crack them firstly and at a pol. add 7- 8% of water. Look coffee color will be ready for pressing. If groundnuts with shells, you should remove the shell in advance by a peanut sheller.

Sesame oil press machine

Sesame: Roast the sesame seeds until light gray with a burst phenomenon before pressing. At the same time, the sesame oil will outflow when pinching the sesame seed with your hand. Using big fire to roast sesame seeds, the temperature may be 120-150℃. Then press the roasted sesame seeds thoroughly to get the pure oil at one time. And the sesame oil meal(de-oiled cake) has strip shape with 0.7-15mm thickness.

cotton seed oil pressing line

Cotton seeds: before pressing cotton seeds, roaste the oil seeds until light yellow, the seeds temperature is 120-130℃. Then press them, the thickness of cotton seeds oil meal (de-oiled cake) is 1-1.5 mm.

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