Method for extracting edible cornus wilsoniana seed oil from fresh cornus wilsoniana seed fruits at low temperature

Abstract

A method for extracting edible cornus wilsoniana seed oil from fresh cornus wilsoniana seed fruits at a low temperature comprises the following steps of: taking fresh mature cornus wilsoniana seeds as raw materials, cleaning the seeds, crushing and grinding the seeds into pulp by means of a crusher at a rotating speed of 10-100 r/min, adding water accounting for 30-200% of the weight of the raw materials to the pulp, performing stirring blending at a temperature ranging from 25 to 50 degrees centigrade for 10-120 r/min, and then performing solid-liquid separation through centrifuging to obtain solid residues and an oil-water mixture, and finally performing oil-water separation through centrifuging. The method for extracting edible cornus wilsoniana seed oil from fresh cornus wilsoniana seed fruits at the low temperature is to extract the oil at the low temperature, thereby effectively preventing the emulsification of oil and facilitating oil separation; the oil extraction ratio is greater than 97%; the obtained oil is low in tincture and acid value; the special flavor of the vegetable oil can be kept; the active components of the vegetable oil are not damaged; and the extracted cornus wilsoniana seed oil contains abundant nutrition components without benzo(a)pyrene and trans fatty acid; therefore, the oil can be directly eaten.

Description

technical field [0001] The invention relates to a method for extracting edible eucalyptus seed oil from fresh fruit of eucalyptus glabrata at low temperature. Background technique [0002] The edible oil is extracted from the seeds of the glabra tree, and the traditional processing methods include hot pressing, solvent leaching and refining. Mature and fresh seeds of the light bark tree are first dried for a period of time, then crushed, steamed and fried, and pressed to make oil. The pressed oil residue is leached and refined to extract the remaining oil. The traditional production method has low added value and low economic benefits, and the oils and fats produced by the light-skinned seeds have a high acid value, color and peroxide value after drying, high-temperature pressing and refining. The oil contains organic solvent residues, alkali Refining and deacidification process is very easy to generate saponins, the loss of oil is too large, the temperature of steam deacid...

AI Technical Summary

Problems solved by technology

The traditional production method has low added value and low economic benefits, and the oils and fats produced by the light-skinned seeds have a high acid value, color and peroxide value after drying, high-temperature pressing and refining. The oil contains organic solvent residues, alkali Refining and deacidification process is very easy to generate saponins, the loss of oil is too large, the temperature of steam deacidification is too high, unsaturated fatty acids are easy to oxidize, and the refining process makes valuable nutrients and functional components in oils, such as tocopherols, sterols, di Physiologically active substances such as stearyl alcohol and fat-soluble vitamins such as vitamin A and E are removed, and the real commodity value of the oil cannot be reflected, which seriously affects the nutritional function and use value of the oil of glabra seed oil

In addition, the traditional production process involves high-temperature processes, which are prone to produce benzopyrene and trans fatty acids. These substances will affect human health and greatly reduce the safety of oils.

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