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Differences between Pressed Oil and Solvent Extracted Oil

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Differences between Pressed Oil and Solvent Extracted Oil

Pressed oil and solvent extracted oil are the two main oils in the edible oil market. They are safe as long as they meet the edible oil quality standard and hygienic standard. However, what is the difference between them?

1. Difference in Processing Techniques

The processing technique of pressed oil is called physical pressing, which requires selected oil seeds. After crushing, roasting and pressing, the oil will be squeezed out from the oilseeds. Then after filtering and refining the crude oil, we can get the high quality refined oil, which retains the natural aroma and taste of oil seed, has long shelf life and does not contain any additives and residual solvents.

However, the processing technique of solvent extracted oil is called chemical extracting, which applies the principle of chemical extraction. This method has the features of high oil extraction rate and low labour intensity, while the crude oil can be sold only after the processes of degumming, deacidification, dehydrating, decolorization, deodorization,  and dewaxing. Due to the multiple chemical processing, the natural ingredients in the oil are maybe destroyed. Besides, a certain amount of residual solvents contains in the oil.

2. Difference in Nutrient Contents

Pressed oil keeps the natural color, aroma, flavor and nutritional ingredients. However, the solvent extracted oil is colorless and odorless, and most of its nutrient contents are maybe destroyed. The criterion of peanut oil drafted by State Administration of Grain has been introduced and implemented. The new standards stipulate that the words “pressing” and “extracting” should be marked on the labels of pressed oil and extracted oil respectively.

3. Difference in Requirements of Raw Materials

Pressed oil adopts the physical pressing and retains the natural aroma and taste of oil seeds. Therefore, it has a strict requirements of the raw materials. The oil seeds must be fresh, have low acid value and peroxide value. Besides, high residual oil content in the cakes makes the oil yield relatively low. Therefore, the price of pressed oil is relatively high.

Regardless of the method used, it is safe to comply with the edible oil standard. Henan Huatai Oil Machinery can supply high quality cooking oil press machine and cooking oil production line for you. If you want to produce cooking oil, contact us! Our sales and engineers will help you.



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