Tea-seed oil extraction method with high oil yield

Abstract

The invention discloses a tea-seed oil extraction method with high oil yield, which belongs to the technical field of grease processing. The method comprises three procedures, i.e., acquirement of tea seeds, superfine grinding and extraction of tea-seed oil. According to the method, superfine grinding technology is employed, which is beneficial for extraction of tea-seed oil; an ethyl acetate-petroleum ether solvent is used as an extracting solution, so tea-seed oil yield is further improved; through strict control of parameters like temperature, pressure and time in acquirement of raw materials, the obtained tea seed raw materials have good quality, which is favorable for rapid extraction of tea-seed oil; in the process of extraction of tea-seed oil, maximization of oil yield is realized through controlling of extraction time; and compared with common processes, the method provided by the invention has an obvious better extraction effect, the content of harmful substances produced in preparation are extremely low, and a high safety coefficient is obtained.

Description

technical field [0001] The invention relates to the technical field of oil processing, in particular to a tea seed oil extraction method with high oil yield. Background technique [0002] Tea seed oil is the main component of tea seeds, accounting for 25% to 35% of the dry weight of tea seeds. Tea seed oil refers to the general term for oils and fats extracted from the fruits (tea seeds) of camellia plants. It is a non-drying oil and is colorless. Or light yellow oily liquid, the physical and chemical properties are similar to the more expensive olive oil in the world, containing more than 70 kinds of palmitic acid, stearic acid, arachidic acid, palm oleic acid, oleic acid, linoleic acid, fat-soluble vitamins, etc. Composition, unsaturated fatty acid exceeds 80%, especially linoleic acid content as high as 20.6%, is a kind of edible vegetable oil with high nutritional value, application number is CN201210566347.3 discloses a kind of extraction method of tea seed oil, adopts ...

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Problems solved by technology

[0002] Tea seed oil is the main component of tea seeds, accounting for 25% to 35% of the dry weight of tea seeds. Tea seed oil refers to the general term for oils and fats extracted from the fruits (tea seeds) of camellia plants. It is a non-drying oil and is colorless. Or light yellow oily liquid, the physical and chemical properties are similar to the more expensive olive oil in the world, containing more than 70 kinds of palmitic acid, stearic acid, arachidic acid, palm oleic acid, oleic acid, linoleic acid, fat-soluble vitamins, etc. Composition, unsaturated fatty acid exceeds 80%, especially linoleic acid content as high as 20.6%, is a kind of edible vegetable oil with high nutritional value, application number is CN201210566347.3 discloses a kind of extraction method of tea seed oil, adopts flow Stated carbon dioxide extraction method, select the extraction pressure, extraction time, separation temperature, separation pressure as the main influencing factors, arrange the orthogonal experiment, take the extraction rate of tea seed oil as the test index, when the extraction pressure is 25MPa, the extraction time is 1h, the separation temperature is 25 ℃, and the separation pressure is 6MPa, and the tea seed oil product is obtained. This method has simple process and less production equipment. The method of extracting tea seed oil from tea seeds, the extracted tea The seed oil meets the national second-class edible oil standard, and the extraction method of tea seed oil has been opened up, but the extraction rate of this preparation method is low, and the content of harmful substances in the extracted tea seed oil is high