Low-temperature refining method for tea seed oil and refining adsorbent

Abstract

The invention relates to a low-temperature refining method for tea seed oil, which is characterized by comprising the following steps of: (1) placing rough tea seed oil into a refining kettle and heating to be not higher than 85 DEG C at normal pressure; (2) adding an adsorbent into the refining kettle; (3) refining for 13-35 minutes; and (4) filtering and separating the adsorbent by an oil filter of 1-5 microns to obtain the refined tea seed oil. The adsorbent adopts active carbon, silica gel and modified bentonite with different hole diameters. By using the process, impurities, such as free fatty acid, different pigments, phospholipid, and the like in the rough tea seed oil are adsorbed by the adsorbent, the aim of refining the tea seed oil is achieved by filtration and separation, traditional processes, such as degumming, deacidification, decoloration, deodorization, and the like are replaced, the refining procedures are reduced, the production period is shortened, the oil yield of the refined tea seed oil is improved, biological active substances and nutritional components in the tea seed oil are stored at maximum and the quality and the healthy function of the product tea seed oil are improved.

Description

Technical field: [0001] The invention belongs to the field of edible oil refining, and in particular relates to a low-temperature refining method of tea seed oil and an adsorbent for refining thereof. Background technique: [0002] Tea seed oil is rich in nutrition. It is the only special oil with high oleic acid content comparable to western olive oil in my country. It is known as "the first oil in the East" and "olive oil in the East". 93%, including 83% oleic acid, 10% linoleic acid), phospholipids and saponins, vitamin E, carotene and other antioxidants, which are close to or even exceed olive oil in all major indicators, and are considered to be "the best quality olive oil". of vegetable oil". In addition to food, camellia oil is also an important chemical and pharmaceutical raw material. It has broad application prospects in food, industry, medicine, cosmetics and other industries. In recent years, the demand for camellia seed oil has been increasing, and it is very p...

AI Technical Summary

Problems solved by technology

The above process requires high temperature and vacuum conditions, so the equipment investment is high, the process requirements are relatively harsh, the oil yield is low, and waste water will be generated during the refining process; refining at a high temperature of 240 ° C will greatly affect the active substances in the tea seed oil. At the same time, harmful trans fatty acids will be produced; on the other hand, in order to prevent the tea seed oil from being oxidized too deeply during the high-temperature refining process, artificially synthesized antioxidants are usually added during the refining process to make the tea seed oil Lost the pure natural characteristics, greatly reducing the health care function and application value of tea seed oil