Cold pressing and physical refining process of camellia oil

Abstract

The invention relates to a cold pressing and physical refining process of camellia oil. The cold pressing and physical refining process of the camellia oil is characterized by comprising the following steps of: (1) selecting ripe camellia seeds and drying the ripe camellia seeds by microwave vacuum until the water content is 3-6%; and conveying the dried camellia seeds into a huller to be hulled;(2) carrying out cold pressing on the hulled camellia seeds to squeeze the camellia oil, wherein the temperature of a barrel is in a range of 100-150 DEG C and an oil output temperature is in a rangeof 80-120 DEG C; (3) removing solid impurities in the squeezed camellia oil through a plate and frame filter press; (4) winterizing the camellia oil filtered by the plate and frame filter press at a temperature in a range from below 5 DEG C to 5 DEG C; (5) carrying out molecular distillation on the winterized camellia oil to remove free fatty acid, oil peroxide products, moisture and other low-boiling-point substances from the camellia oil; and (6) taking a mixture of carclazyte, active carbon and aluminum oxide as a filtering medium to filter; and removing impurities and pigments of the camellia oil treated by the molecular distillation to obtain the finished product. The cold pressing and physical refining process of the camellia oil has the advantages of environmental friendliness, high oil yield, and high retention ratio of micronutrients in finished oil.

Description

technical field [0001] The invention relates to a pressing and refining process of camellia seed oil, in particular to a low-temperature cold pressing process of camellia oil and a physical 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 ...

AI Technical Summary

Problems solved by technology

This patented method imitates the processing technology of olive oil, and eliminates the pressing and extraction process and chemical refining process, avoiding the residue of chemical substances and the loss of nutrients, but this method does not consider the two woody oils of camellia seed and olive fruit The difference between the picking and processing process, olive oil is pulp oil, generally must be controlled within 8 hours from picking to processing, at this time the free fatty acids and peroxidation products in the oil are extremely low, this process can be considered

Camellia oleifera grows mostly in low mountain and hilly areas. It usually takes dozens of days to complete from picking, transportation, drying, shelling to crushing, and the free fatty acids and fatty acid peroxidation products produced during this process cannot be removed. , it is difficult to guarantee the quality of the finished product

[0006] Another example is that the publication date is December 10, 2008, and the publication number is CN101317611A in the domestic patent, which discloses a continuous deacidification process of high acid value grease by multi-stage molecular distillation. After filtering, washing with saturated NaCl, removing water by thin film evaporation, most of the fatty acids are removed by molecular distillation for 2 to 5 times. This method avoids the problems of high alkali consumption and large loss of nutrients in the alkali refining method. This method is suitable for high acid It is more suitable for the treatment of low-quality oils such as valuable waste oil and improperly stored spoiled oils, but it is not suitable for freshly processed high-grade woody oils such as camellia oil.

[0007] In summary, there is no cold pressing process and physical refining method for camellia oil with low pressing temperature, high oil yield, low energy consumption, few steps, high nutritional value, low acid value and peroxide value.

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