Ocean offers turnkey solutions which covers all of the main processes of Sunflower seed oil production line

Sunflower Seed Oil Pretreatment & Pressing Process
Sunflower Seed Oil Solvent Extraction Process
Sunflower Seed Oil Refining Process

Solution Features

Waxes in edible oils are high molecular esters formed by the combination of monounsaturated fatty acids and monohydric alcohols. They have a high melting point, poor solubility, and are not absorbed by the human body. When the oil temperature drops, these waxes can crystallize, causing the oil to become cloudy and affecting the product's appearance.

In sunflower seeds, most of the wax is contained in the husk; if the oil is extracted without husking, the wax content ranges from 200-3500 mg/kg. However, if the oil is extracted after husking, the wax content is reduced to 110-150 mg/kg. Conventional refining cannot remove waxes from edible oils. To remove waxes, the oil must go through a process of cooling, crystallization, wax precipitation, and filtration. Therefore, a dewaxing section needs to be added to the conventional processing flow when processing these three types of oils.

Dewaxing Process

Dry oil/bleached oil

Cooling

Adsorbent mixing

Awaiting decolorization/
awaiting deodorization

Filtration

Cooling and crystallization

The dewaxing section is an additional step in the conventional refining process, added either after drying or after decolorization. It not only removes waxes but also eliminates colloidal substances in the oil.

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