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Production equipment. Types of oil presses

Thursday, 17 August 2017 18:44

Fats of vegetable and animal origin are an important component of a balanced diet, acting as a source of energy. In addition, fats act as a source of useful fatty acids, which are not produced in the human body, but are important for health. Vegetable oils are rich in various vitamins (A, B, E and K), help the body to absorb other useful elements from food, and are also used to enrich the taste quality of the food.

There are three most commonly used methods for the production of vegetable oils on an industrial scale: periodic hydraulic pressing, continuous mechanical pressing and solvent extraction. As a result of mechanical pressing of seeds, cold and hot-pressed oil is obtained.

Stages of production of cold-pressed oil

1. Cleaning of raw materials from third-party impurities and contaminants using special separators.

2. Cleaning raw materials from the peel and grinding with a roller machine.

3. Pressing the seeds in a screw press.

4. Filtration of oil obtained in the process of pressing.

5. Bottling of purified oil.

In the process of pressing it is possible to obtain up to 35% of vegetable oil from the total mass of raw materials.

The main advantage of cold pressed oil: high content of vitamins, healthy fats and minerals. Among the disadvantages - the short shelf life of the finished product, over time, the taste and visual qualities of the oil deteriorate significantly, appears an unpleasant bitterness.

Stages of production of hot-pressed oil

Hot pressed oil has better taste and is stored longer. In addition to the above equipment, additional equipment is used to produce hot-pressed oil.

Before pressing, raw material undergoes heat processing (frying or steaming). When frying, the temperature exceeds 100 degrees. Then, the raw materials are sent to the oil press, filtered and bottled.

What types of oil presses are used by manufacturers?

Equipment for the production of vegetable oil can be divided into two groups:

1. Pre-pressing machines (for example, prepress)

2. Final-pressing machines.

Nevertheless, the technology of production largely depends on the type of raw material used to produce vegetable oil.