A kind of pressing and refining process of camellia oil

Abstract

The invention provides a squeezing and refining process of camellia oil. The squeezing and refining process comprises the steps of shelling, heating, squeezing, filtering, cooling, distillation, refining and secondary cooling. Albumen and phospholipid membranes in nutlet can be broken preferably through low-pressure microwave heating of camellia seeds, the moisture content of the camellia seeds is reduced, the dissolution of oil drops is promoted, the oil extraction rate of squeezing is increased, and the microwave heating is controlled between 100 DEG C and 130 DEG C, the increase of free fatty acid content and the generation of grease peroxide product can be reduced through relatively low temperature, and the difficulty of subsequent refining process is reduced; squeezing at relatively low temperature is adopted, the acid value and peroxidation value are prevented from being too high due to squeezing, and particularly adopted shell powder contains trace calcium oxide and chitosan in the refining process through cooling-distillation-refining-secondary cooling process treatment, so that the acid value and peroxidation value in camellia oil and the content of toxic peroxide can be effectively reduced.

Description

technical field [0001] The invention belongs to the production process of edible oil, in particular to a pressing and refining process of camellia oil. Background technique [0002] Camellia oil, also known as camellia oil, is obtained from the seeds of Camellia oleifera Abel. It is one of the oldest traditional woody edible vegetable oils in my country. Its fatty acid composition is very similar to that of olive oil. Known as "Oriental Olive Oil". Camellia oil also contains various active substances such as tea polysaccharides, camellia saponins, flavonoids, tea polyphenols, vitamins and phytosterols. Regular consumption can reduce cholesterol, increase high-density lipoprotein, reduce low-density lipoprotein, lower blood fat, and prevent heart disease. For cerebrovascular diseases, improving immunity, anti-radiation, scavenging free radicals, preventing tumors and other effects, the International Food and Agriculture Organization has listed it as a healthy edible oil that ...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing camellia oil preparation methods use drying, crushing, flaking, steaming and frying at a high temperature above 110°C, and then press the oil through high-temperature hot pressing. The processing procedures are relatively complicated, the equipment investment is large, and the production cost is high. The oil color is darker and the quality is poor. It must go through deacidification, dehydration, decolorization, deodorization, degreasing and other refining processes before it can become first-class pressed oil. The refined oil yield is low, and the natural flavor of camellia oil is lost after refining.