Method for refining silybum marianum seed oil

Abstract

The invention discloses a method for refining silybum marianum seed oil. Crude silybum marianum seed oil is subjected to ultrafiltration by adopting an inorganic ceramic film, and the silybum marianumseed oil can be effectively refined and purified without a complex acid reaction, an enzyme reaction and deacidifying and degumming treatment processes. According to the method disclosed by the invention, the oil refining process is effectively simplified, the treatment cost is reduced, the operation is simple, the film separation equipment is easy to clean, and the manpower and material resources, energy consumption and cost are reduced. Moreover, the used inorganic film has the advantages of being high-temperature-resistant, resistant to chemical corrosion and bio-erosion and pollution-resistant, the purification operation of the silybum marianum seed oil is facilitated, the refined silybum marianum seed oil is high in degumming efficiency, the acid value reduction rate is high, and thequality of the silybum marianum seed oil is obviously improved.

Description

technical field [0001] The invention relates to the field of purification and refining of milk thistle seed oil, in particular to a refining method of milk thistle seed oil. Background technique [0002] Milk thistle seed oil is a fatty oil obtained from the ripe fruit of the Compositae herb Silybum marianum (L.) Gaertn, accounting for about 30% of the total weight of the dry fruit, rich in linoleic acid, flax A variety of polyunsaturated fatty acids such as acid and other components such as protein, amino acid, fat, vitamins and trace elements have high nutritional value. Milk thistle seed oil is also edible abroad, called "kangaroo oil". In China, animal toxicity tests, nutrition tests and consumption have been carried out by Guangzhou Fourth Pharmaceutical Factory, Wuhan Drug Control Institute, Xi'an Botanical Garden and other units, and it has been proved that it is non-toxic and harmless, and its nutritional value is equal to that of soybean oil. Literature reports ha...

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Problems solved by technology

[0003] Milk thistle seed oil obtained by cold pressing or leaching of milk thistle seeds is a by-product of extracting silymarin. Although the content of essential fatty acids such as oleic acid and linoleic acid is high, the research on the refining process of milk thistle seed oil is backward. At present, the utilization rate of milk thistle oil in our country is low. Because the crude milk thistle oil contains a small amount of impurities such as phospholipids, which affect the quality of milk thistle oil, it is necessary to remove the affected oil from the crude oil through degumming, deacidification and other refining processes. edible value and safe impurities

[0004] Chinese patent 201210480537.3 A degumming method of milk thistle seed oil discloses a refining method of milk thistle seed oil, mainly through a series of degumming and refining methods such as acid reaction, enzyme reaction, separation and drying, and its operation is relatively cumbersome Complicated, time-consuming, labor-intensive and energy-consuming

Swelling of organic membrane materials in organic solvents and membrane fouling have limited membrane degumming of cooking oil