How to choose edible oil processing method?

At Henan Glory Oil & Fats Engineering Co., LTD, we understand the importance of choosing the right edible oil processing method. There are two edible oil processing methods: pressing and solvent extraction, each with its unique advantages. Here are two key considerations to ensure that you choose the edible oil processing method that best suits your needs.

1. Edible oil processing method: Determine whether your primary goal is maximum yield or maintaining the highest quality edible oil.

(1) Pressing method: It refers to the extraction of oil from seeds or nuts by using physical pressure. This method can be further divided into cold pressing and hot pressing. Generally speaking, high-end oils are usually cold pressed, such as olive oil, linseed oil, and tea seed oil. It is usually carried out at a temperature of 35°C to 40°C, without a roasting machine before pressing, which can retain the nutritional value and produce light-colored high-quality oil. However, the yield is lower. On the other hand, edible oils such as peanut oil, sesame oil, rapeseed oil, sunflower oil, soybean oil, corn germ oil, and cottonseed oil are usually hot pressed. Before pressing, the temperature and moisture of the oilseeds need to be controlled in advance with a roasting machine or a steaming machine. But it may slightly reduce the nutritional content. The oil produced is darker in color and has a stronger aroma.

Different oil combinations

(2) Solvent extraction method: It refers to the extraction of oil from seeds or oil cakes by using chemical solvents. This method is highly efficient, and the chemical solvent is n-hexane, which can be recycled and reused in the edible oil processing process. In addition, the biggest advantage of the edible oil solvent extraction process is the low residual oil rate, which is very suitable for increasing the yield of low-oil oil crops such as soybeans and rice bran. In addition, oil crops with higher oil content, such as peanuts, rapeseed, sunflower seeds, cotton seeds, etc., can also use pre-pressing and solvent extraction processes to increase yields. It should be noted that the oil obtained from the solvent extraction process must be refined to remove impurities and solvents to ensure that it meets national safety standards. Although extraction may result in trace amounts of solvent residues, modern refining processes can minimize this risk.

Edible oil refining machine

For those seeking a balance between quality and yield, a combination of pressing method and solvent extraction method may be the best choice. This hybrid method allows for the extraction of maximum oil while preserving the natural qualities of the oil.

2. Edible oil processing equipment and price: Your choice also depends on what equipment you have or can afford.

If your daily processing capacity is small, you can use the pressing method and directly use the screw edible oil press to press the oil. The operation is very simple and the pressing efficiency is very high. In addition, the automatic temperature control integrated edible oil press machine produced by Henan Glory can also automatically adjust the temperature and is equipped with two filter barrels, which can help you get cleaner edible oil. Furthermore, the pressing method can also be equipped with a small edible oil pressing production line, including pretreatment equipment, pressing equipment, and filtering equipment. After the oilseeds are pretreated, good oil can be obtained. If your daily processing capacity is more than 30 tons, you can use the solvent extraction method. It usually needs to be equipped with rotary-type extractor, D.T.D.C-desolventizer-toaster, evaporation system and stripping tower and solvent recovery system. More than 99% of the oil can be obtained from the oilseeds by solvent extraction method, but the investment is higher than the pressing method.

Edible oil processing machine produced by Henan Glory

In summary, there are a variety of factors to consider when choosing edible oil processing method. Henan Glory Oil & Fats Engineering Co., LTD. is able to provide expert advice and the most advanced edible oil processing technology to ensure that you get the best edible oil processing solution for your needs. Contact us today for more information on how we can help you produce high-quality, safe, and nutritious edible oils.