Separating method of trans-fatty acid in tea seed oil

Abstract

The invention discloses a separating method of trans-fatty acid in tea seed oil. The separating method of the trans-fatty acid in the tea seed oil is characterized by comprising refrigerating tea oil refined at a high temperature at 4 DEG C for 48H, performing low-temperature low-speed centrifuging freezing to fat, collecting the liquid fat while most of solid fat is trans-fatty acid and stearic acid; then mixing silver nitrate and activated silica gel (1:5, m / m) to fill two-thirds of the volume of a chromatographic column, adding after-separation liquid fat of a column volume, performing chromatography, collecting the fat first flowing out which is mainly trans-fatty acid and stearic acid, and enabling the receiving amount to be 10% of fed fat; and then collecting other fat so that full separation of the trans-fatty acid in the fat is achieved and the tea seed oil free of trans-fatty acid is obtained. After 5 column volumes of chromatography is performed to a fat column, the column is washed with edible alcohol of 50 DEG C, eluate is recycled, the alcohol is reused, and the tea seed oil free of the trans-fatty acid can be obtained.

Description

technical field [0001] The invention relates to a method for separating trans fatty acid in tea seed oil. Background technique [0002] Tea seed oil contains 78-80% oleic acid, 8-12% linoleic acid, easy to be digested and absorbed by the human body, long-term consumption can [0003] Soften cardiovascular and cerebrovascular, lower cholesterol, inhibit and prevent coronary heart disease, hypertension and other cardiovascular and cerebrovascular diseases, [0004] It is a pure natural green health care oil. [0005] The crude oil of tea seeds has high acid value, dark color and peculiar smell. It needs refining processes such as degumming, deacidification, decolorization, deodorization and dehydration to meet the standard of edible oil. However, in the oil refining process, it is necessary to add acid, alkali, and active white powder, and it must be treated for a long time above 250 ° C to remove odorous substances such as aldehydes, ketones, and water in the oil. , Tea se...

AI Technical Summary

Problems solved by technology

However, in the oil refining process, it is necessary to add acid, alkali, and active white powder, and it must be treated for a long time above 250 ° C to remove odorous substances such as aldehydes, ketones, and water in the oil. , tea seed oil is easy to generate trans fatty acids

However, trans fatty acids have serious harm to human health. Long-term intake of trans fatty acids can reduce people's memory, easily gain weight, easily cause coronary heart disease, easily form blood clots, affect growth and development, and affect male fertility. harmful oil