How Does Grape Seed OIL EXTRACTION MACHINE Work?



1.Solvent extraction of Grape Seed Oil Extraction Machine
After drying, crushing, wetting, then we use organic solvent to spray and soak the grape seeds, and make grape seed oil extracted from the grape seeds. And then we isolate the mixed oil to get grape seed oil.
Grape Seed Oil Extraction Machine has higher oil yield and solvent extraction process is more complete, and the solvent can be recycled. But in the process of solvent, it may easily make unsaturated fatty acid decomposition and make the crude oil saponification value high.



2. Expression Method of Grape Seed Oil Extraction Machine
Squeeze the grape to get grape seed without grape peel. And then broke the grape seed after removing impurity. Soften the seed and then put that into oil press for pressing, finally getting the crude oil. Oil expression method is simple, easy for industry production without chemical pollution and easy separation. But at the same time, expression method also exist some questions such as low oil yield, high residual oil content, energy consumption, etc.



3. Overcritical CO2 extraction method of Grape Seed Oil Extraction Machine
After drying, crushing grape seeds go into the extraction kettle.Press Carbon dioxide by high-pressure pump,passing through the heat exchanger heating, making it both the diffusivity of a gas and the liquid density supercritical fluid. The fluid goes through the extraction kettle after leaching grape seed oil, into the separation column, after decompression, warming the grape seed oil and carbon dioxide separation. Overcritical CO2 extraction method features: low temperature operation; Avoiding the oxidation of unsaturated fatty acid decomposition; High oil extraction rate. Overcritical CO2 extraction is a new extraction technology developed in recent years. In food, medicine, chemical industry and other fields the method has been widely used.



The three above making oil methods can only get crude oil. If we want to get edible oil, the crude oil needs oil refining process. At present, the general use of grape seed oil refining process after Grape Seed Oil Extraction Machine processing is as follows: Degumming, alkali refining, washing, drying, decoloring, deodorization, finally getting the edible oil.
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