Tea seed oil refining process

Abstract

The invention relates to a tea seed oil refining process and belongs to the technical field of oil and fat refining of deep processing of agricultural and sideline products. The process includes the steps of crude tea seed oil low-temperature alkali refining for the removal of free fatty acids, first ceramic ultrafiltration membrane saponin removal, rinsing degumming, activated charcoal adsorption, second ceramic ultrafiltration membrane low-temperature ultrafiltration impurity removal for obtaining first-class tea seed oil and ceramic ultrafiltration membrane backwash in hot water at the temperature of 50 DEG C -90 DEG C. According to the tea seed oil refining process, the refining oil yield rate can be improved, nutrients, active substances and aroma of the oil are not lost, the refining process does not cause secondary pollution, and the obtained refined tea seed oil is clear in appearance and good in product stability.

Description

technical field [0001] The invention relates to the technical field of oil refining in deep processing of agricultural and sideline products, in particular to a tea seed oil refining process. Background technique [0002] Camellia oleifera seeds are mainly produced in the south-central region of my country, among which Hunan Province ranks first in the country. For a long time, residents in the producing area mainly eat tea seed oil. At present, tea seed oil is mostly extracted by steaming-pressing-leaching process. Although tea seed oil has a high oil yield, the tea seed oil contains many impurities, and the color is darker and the taste is poor, so the product grade is lower. . In recent years, the camellia seed processing industry has adopted the conventional refining method of "crude oil-degumming-complete deacidification-one washing-decolorization-deodorization', and the product quality has improved. However, due to the inherent particularity of Camellia oleifera see...

AI Technical Summary

Problems solved by technology

However, due to the inherent particularity of Camellia oleifera seed oil, conventional refining methods cannot effectively remove soluble impurities; in addition, the capacity of existing refining equipment is relatively low, and the overall equipment is relatively backward, so the production cost of refining Camellia oleifera seed oil using conventional methods is relatively high , the oil yield is low, and the product quality has not been effectively improved

[0003] On June 16, 2010, the Chinese Invention Patent Application Publication No. CN101735886A disclosed a new refining process of Camellia oleifera seed crude oil. Refining, desoaping, after the first acid addition, washing with water, washing with water for the second time, decolorization and deodorization, the first-grade Camellia oleifera seed oil is obtained; although phosphoric acid and citric acid are used to elute phospholipids, tea saponin and The soluble impurities contained in it improve the stability of the product, but the acidic substances will denature the tea seed protein and produce color reversion, which affects the nutritional value of tea seed oil, destroys the active substances in the oil and the fragrance of tea seed oil itself