Production method for preparing and refining oil from tea seeds or camellia seeds

Abstract

The invention discloses a production method for preparing and refining oil from tea seeds or camellia seeds, overcomes the problems of high production cost, benzopyrene pollution, low retention rate of natural ingredients and poor taste and flavor in a conventional process for preparing the oil from the tea seeds or camellia seeds. A technical solution comprises the steps of cleaning and removing impurities; drying slowly at a proper temperature; husking by centrifugation and separating through air suction; adjusting moisture; squeezing to prepare the oil; degumming by using phosphoric acid; decolorizing by a composite adsorbent; deacidifying by alkali refining; deodorizing; cooling, crystallizing and dewaxing to obtain tea seed finished oil or camellia seed finished oil. The process provided by the invention has low production cost, can retain the natural ingredients contained in the tea seeds or camellia seeds, and has good taste and quality. The produced tea seed oil or camellia seed oil meets a national standard of edible oil.

Description

technical field [0001] The invention relates to a production method of edible vegetable oil, in particular to an oil production and refining production method of tea seeds or camellia seeds. Background technique [0002] my country is the first country in the world to discover and utilize tea trees, and it is also the first country in the world to cultivate Camellia oleifera, with a planting history of two to three thousand years. Tea leaves and camellia oleifera are plants of the same order, family, and genus, and are different tree species of the genus Camellia. [0003] According to statistics, the planting area of ​​camellia oleifera in my country has reached 4 million ha 2 , with an annual total output of more than 600,000 tons of camellia oleifera seeds, among which Hunan and Jiangxi provinces have the largest output, accounting for more than 60% of the total national camellia oleifera seed output. In addition, Hubei, Guangxi, Anhui, and Zhejiang also have large outp...

AI Technical Summary

Problems solved by technology

[0007] 1) Camellia oleifera or tea leaves are likely to be polluted by the environment during the process of collecting, drying, drying and drying, especially the pollution of benzopyrene to camellia oleifera seeds or tea seeds, which cannot be removed by simple refining

[0008] 2) Camellia oleifera seeds and tea seed husks are tightly packed, so it is difficult to peel off, and the husk content in the kernels will directly affect the pressure of the subsequent oil-making chamber, the color and wax content of crude oil, and the contaminated substances in crude oil Content

[0009] 3) Tea seed oil or tea seed oil has astringent bitterness and peculiar smell, which cannot be removed only by simple refining process, and highly refined will affect the retention of its natural components

[0010] 4) Traditional camellia oleifera seeds and tea seed oils mostly adopt hot pressing process (incoming pressing temperature 110-120°C). Due to the dark color of crude oil, in order to make the finished oil meet the national standard, deep refining operations (such as decolorization and adsorption) are necessary. The amount of agent used is large, and the temperature is as high as 110-120°C; another example is that the deodorization temperature is as high as 240-250°C), which will inevitably increase the refining loss of oil, and cannot well retain the natural components contained in the oil

In recent years, the low-temperature cold pressing process (pressing temperature -65°C) has been popular. In order to reduce the residual oil rate, the consumption of pressing power has increased and even the processing capacity of the oil press has been artificially reduced.

[0011] 5) The low-temperature cold-pressed crude oil only undergoes precipitation and fine filtration, or only undergoes simple refining to obtain finished oil, which cannot guarantee the edible safety of camellia oleifera and tea seed finished oil

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