What is the scientific reason for ancient oil recovery?

The scientific reasons for the existence of ancient oil exploitation are as follows:

1, squeezing principle: The basic principle of ancient oil squeezing is to squeeze oil out of oil by pressure. Oil is squeezed out by soaking it in water and then applying pressure manually or mechanically. This process makes use of the fluidity of oil, so that oil can be separated from oil.

2. Influence of temperature: In the process of oil extraction in ancient times, temperature had a great influence on the extraction and quality of oil. High temperature can increase the fluidity of oil and improve the oil yield, but it may also lead to the loss of nutrients in oil. Therefore, in the process of oil extraction, it is necessary to control the temperature to obtain the best effect.

3, residue utilization: after the ancient method of oil extraction, some residue will be left. These residues are usually discarded or used as fertilizer. However, these residues still contain a lot of nutrients, which can be converted into valuable by-products through further processing, such as fermentation or adding other ingredients.

4. Natural preservatives: no chemical preservatives are added during the ancient oil extraction process. However, through natural fermentation and high temperature treatment, harmful microorganisms in the oil were killed, thus ensuring the quality and safety of the oil.

Basic methods of ancient oil exploitation;

1. Prepare oil: Select suitable oil, such as soybean, peanut and sesame. After selection, cleaning and drying, the oil is put into a special container.

2. Stir-fry: put the oil in a wok and stir fry. The purpose of frying is to increase the internal temperature of oil, increase its plasticity, and at the same time, it can kill microorganisms and destroy protein and starch structure. Control the heat and time when frying.

3. Squeezing: put the fried oil into an oil press for squeezing. The oil press squeezes the grease out of the oil by external force, either manually or mechanically. You need to master the pressure and time when pressing.

4. Filtering: The squeezed oil needs to be filtered to remove residues and impurities. The filtered oil becomes more pure and transparent.

5. Precipitation: The filtered oil needs to be allowed to stand for a period of time to allow the impurities in it to further precipitate. This process can make the oil clearer. In the process of precipitation, keep proper temperature and time to avoid complete precipitation of impurities and residues.

6. Storage: Finally, the filtered and precipitated oil is stored in a sealed container to keep its quality and flavor.