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Supercritical extraction method of tea oil

A supercritical extraction and supercritical technology, which is applied in the directions of fat oil/fat production, fat oil/fat refining, and fat production, can solve the problems of unsatisfactory tea oil content, serious loss, low yield of tea oil, etc., and achieve drying efficiency. Improve and reduce the loss of nutrients, the effect of rich nutrients

Active Publication Date: 2016-05-25
广州绿和缘生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This processing method obtains camellia oil by extracting and removing impurities from liquid camellia oil. Although the pressure is reduced to a certain extent, more active ingredients are extracted while extracting impurities, resulting in the yield of camellia oil. The rate is low, the loss is more serious, and the content of vitamin E and other nutrients in tea oil is not ideal.

Method used

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  • Supercritical extraction method of tea oil

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Experimental program
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Effect test

Embodiment 1

[0029] The preparation of embodiment one tea oil crude oil

[0030] Take fresh tea seeds with a moisture content of 20.6%, remove the shells, and undergo the first microwave drying and the second microwave drying. The frequency of the first microwave drying is 912MPa, the time is 3min, and the second microwave is performed after an interval of 20min. Drying, the frequency of the first microwave drying is 912MPa, the time is 1min, and the dried tea seeds are obtained. The water content of the dried tea seeds is 7.2%; the tea seeds are crushed and filtered after cold pressing, and the oil temperature at 50°C to obtain camellia oil crude oil. The tea oil crude oil was detected, the acid value was 3.2, and the peroxide value was 5.7.

Embodiment 2

[0031] The preparation of embodiment two camellia oil crude oil

[0032]Take fresh tea seeds with a water content of 20.6%. After the first microwave drying and the second microwave drying, the frequency of the first microwave drying is 912MPa, and the time is 2min. After an interval of 15min, the second microwave drying is carried out. The frequency of microwave drying is 912MPa, the time is 2min, the water content of the dried tea seeds is 7.0%, and the shells are removed to obtain tea seed kernels; the tea seed kernels are crushed, filtered after cold pressing, and the oil temperature is 50 ℃, camellia crude oil was obtained. The crude camellia oil was detected, the acid value was 3.0, and the peroxide value was 5.4.

Embodiment 3

[0036] The supercritical extraction of embodiment three camellia oil

[0037] Get the tea oil crude oil 20kg that embodiment two makes, the tea oil crude oil is pumped in the extraction column that stainless steel theta ring filler is housed by extraction column top, supercritical CO 2 Enter the extraction column from the bottom of the extraction column, after the first extraction and the second extraction, collect the raffinate to obtain the finished camellia oil. The pressure of the first extraction is 9MPa, the temperature is 35℃, CO 2 The flow rate is 240L / h, the time is 40min; the pressure of the second extraction is 12MPa, the temperature is 42℃, CO 2 The flow rate is 240L / h, and the time is 20min. Based on camellia oil crude oil, the mass yield of finished camellia oil is 98.5%.

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Abstract

The invention provides a supercritical extraction method of tea oil. The supercritical extraction method comprises the following steps: S1, pretreating raw materials: removing shells of tea seeds, and after the primary microwave drying and the secondary microwave drying, obtaining dried tea seed kernels; S2, preparing tea oil crude oil: cold squeezing the tea seed kernels, and filtering to obtain the tea oil crude oil; and S3, supercritical CO2 refining: sending the tea oil crude oil into a supercritical CO2 device, and after the primary extraction and the secondary extraction, collecting an extraction residual solution to obtain a finished product tea oil. The supercritical extraction method belongs to the technical field of the processing of the tea oil. By adopting the method, while the oil yield is increased, the occurrence of rancidity is reduced, impurities are removed, the loss of nutrients such as vitamin E is reduced, and the quality stability of the obtained tea oil is good.

Description

technical field [0001] The invention belongs to the technical field of camellia oil processing, in particular to a supercritical extraction method of camellia oil. Background technique [0002] Camellia oil, namely Camellia oleifera seed oil, camellia seed oil, camellia oil, is the oil obtained by processing the mature seeds of the Camellia oleifera plant of the family Theaceae. Camellia oil is clear in color and fragrant in taste. The content of unsaturated fatty acids such as oleic acid, linoleic acid and linolenic acid is more than 90%. It also contains rich vitamin E, vitamin D, squalene, sterols, phospholipids and other nutrients. The water content of fresh tea seeds is usually 20-30%. Due to the high water content, it is prone to rancidity after long-term storage, and it is often necessary to make oil immediately after rapid drying or store at low temperature. [0003] The traditional processing and production of camellia oil mainly uses the pressing method and solven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B1/04C11B1/06
CPCC11B1/04C11B1/06C11B3/006
Inventor 刘汉槎刘粤华伍淑华沈玉优许建宇
Owner 广州绿和缘生物科技有限公司
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