How is peanut oil squeezed out?

Peanut oil is made from peanuts through screening, rolling, cooking, composting and pressing.

Peanut oil is made from peanuts through screening, rolling, cooking, composting and pressing. Press is subdivided into primary press, crushing press, secondary press and other steps. Finally, the filtered peanut oil can be eaten, and the remaining filter residue can be mixed into the green body and repeatedly squeezed.

Peanut oil is an edible oil, which is light yellow and transparent, bright in color and fragrant in smell. It contains more than 80% unsaturated fatty acids and 19.9% saturated fatty acids, as well as sterols, maltol, phospholipids, vitamins, choline and other components. Pure peanut oil has high density, thick oil and dark yellow color. When the temperature is lower than 3℃, it will condense without flowing. If it is mixed with lard or palm oil, the oil will be thin and light yellow. It will start to condense rather than flow.

Introduction of peanut oil

Under general storage conditions, peanut oil will undergo the process of automatic oxidation rancidity, and the changes are as follows: the automatic oxidation process is related to the season. If stored in winter, low temperature can effectively alleviate the style of lipase and oxygen. With the change of seasons and the increase of temperature, when the temperature is 15-30℃, on the one hand, oil will be hydrolyzed by lipolytic enzymes, and the acid value will increase, on the other hand, oxygen in the air will be immersed.

Raw oil consists of 20% saturated fatty acids and 80% unsaturated fatty acids, mainly oleic acid, linoleic acid and palmitic acid. The iodine value is about 80 ~ 1 10, which belongs to drying oil. The oil is light yellow, transparent and fragrant, and it is a high-quality edible oil. According to the national standard GB 1534-2003 of Peanut Oil, peanut oil can be divided into leaching peanut oil and pressing peanut oil according to the production process. Leached peanut oil is the oil made by solvent leaching, and pressed peanut oil is the oil made by pressing method.