Plam Crude Oil Refinery

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The process of extracting edible oil, the first oil from the press, is called gross oil. At this time, the oil has many impurities and a heavy odor. At this time, it does not meet the national standard for finished edible oil and cannot be used for human consumption, let alone as a commodity.

After the "virgin oil" is dewaxed, de-acidified, decolorized and deodorized, the oil is called "refined oil", which is a finished product that meets the national standard and can be circulated as a commodity. Since many impurities harmful to human body are removed, the oil can meet the national standard and become a real commodity.

Why does oil need refined?

 Vegetable and Animal Oils and Fats have impurities such as Moisture, Solids (Insolubles), Gums (Lecithins), Free-Fatty Acids (FFA), Waxes, and Compounds of Sodium, Potassium, Magnesium, Calcium, and other metals. These impurities must be removed to improve the functionality of the oils. Other characteristics of oils (such as Color, odor, and taste) are also considered impurities by modern consumers. These impurities are removed in a series of steps such as degumming (to remove gums), neutralizing (to remove FFA), bleaching (to remove color), deodorizing (to remove odor and taste), and dewaxing or winterization (to remove waxes).

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