Method for extracting tea-seed oil by aqueous enzymatic method

Abstract

The invention relates to a method for extracting tea-seed oil by an aqueous enzymatic method, which comprises the following processing steps: 1, removing tea saponin in the tea-seed oil; 2, pretreating the residue of the tea-seed oil; 3, performing zymohydrolysis; and 4, recovering the tea-seed oil. The tea saponin is firstly removed from the tea-seed oil so as to be favorable for the extraction yield of free oil in a later process; and the method has the advantages of simple processing equipment, safe operation, less pollution, high free oil yield, no residue of organic solvent, and capacity of obtaining high-quality finished product tea oil, and is suitable for large scale production.

Description

【Technical field】 [0001] The invention belongs to the technical field of application of biotechnology in the food industry, and relates to a method for extracting tea seed oil by an aqueous enzymatic method which removes tea saponin from tea seeds and is beneficial to the subsequent free oil extraction rate. 【Background technique】 [0002] Camellia oleifera seed (Camellia oleifera seed), also known as camellia seed, is one of the four major woody oil plants in the world. It is mainly distributed in Jiangxi, Hunan, Anhui, and Guangxi provinces in China, with Hunan being the most. In addition, there are only a very small amount of distribution in Southeast Asia, Japan and other places. Tea seed oil, together with olive oil, is known as the world's two largest woody edible oils, and has been known as the "treasure in oil" since ancient times. It has been confirmed by the China Center for Disease Control that the quality of tea oil is better than that of olive oil. Compared wit...

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Problems solved by technology

[0003] In Camellia oleifera seed production areas, most of the tea oil production adopts workshop-style pressing process, which not only has high cost and low oil yield, but also because tea seeds contain more reducing sugars, it is easy to occur due to high temperature during the pressing process. Browning makes the oil darker, which makes the oil quality poor and the price is not high, the use is limited, and its press cake is also difficult to use

There are also factories that use the leaching method, but the organic solvents used are volatile, and it is difficult for small factories to meet the requirements of safe production, the cost is high, and the pollution to the environment is great.

Moreover, the residual solvents in the refined oil are easy to exceed the standard, endangering the health of consumers

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