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Method for refining lutein by supercritical extraction

A supercritical, lutein technology, applied in the production of bulk chemicals, organic chemistry, etc., can solve the problems of low production efficiency, complex production process, long production cycle, etc., and achieve high production efficiency, short production cycle, and production process. Simplified effect

Inactive Publication Date: 2011-04-13
青岛赛特生物科技有限公司
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Problems solved by technology

Although this method can obtain higher-purity lutein products, there are problems such as complex production process, long production cycle, and low production efficiency.

Method used

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Embodiment Construction

[0014] 10Kg marigold extract is placed in the extraction kettle, in the early stage extraction process, the mixture of acetone and n-butanol is selected as entrainer, the volume ratio of acetone and n-butanol consumption is 1: 3, the above-mentioned entrainer and super Critical CO 2 The fluids are mixed and injected into the extraction tank. For example, the entrainer can be put into the entrainer storage tank, and connected to a mixer through the entrainer delivery pipeline equipped with a control valve, and the mixer is simultaneously passed through the CO 2 Fluid transfer lines connected to supercritical CO 2 storage tank, the entrainer is mixed with supercritical CO 2 The fluid is fed into the mixer for mixing, entrainer and supercritical CO 2 The mass ratio is preferably 1:15, mixed uniformly in the mixer and injected into the extraction kettle, the entrainer and supercritical CO 2 The injection flow rate of the mixed fluid is 150 L / h, the pressure of the above-mention...

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Abstract

The invention discloses a method for refining lutein by supercritical extraction, which comprises the following steps of: performing pre-extraction and subsequent post-extraction on marigold extract in an extraction kettle, obtaining the finished product lutein in the extraction kettle and obtaining separation impurities in a separation kettle. In a pre-extraction process, an entrainer is mixed with a supercritical CO2 fluid and then the mixture is injected into the extraction kettle. In a post-extraction process, the fluid injected into the extraction kettle only adopts the supercritical CO2 fluid. The entrainer is the mixture of acetone and isobutanol, and the volume ratio of the acetone to the isobutanol is 1:3. The method can remove unusual smell and increase lutein content to be more than 200 mg / Kg, and has the characteristics of simplified production process, short production cycle, high production efficiency and the like.

Description

technical field [0001] The invention relates to a method for removing peculiar smell in marigold extract by means of supercritical extraction, that is, a method for refining lutein by supercritical extraction, which belongs to the field of separation and purification of natural products. Background technique [0002] Marigold, also known as stinky hibiscus and stinky chrysanthemum, is an annual herb. It is often used medicinally because it has the effects of calming the liver and clearing away heat, expelling wind, resolving phlegm, and treating dizziness, cold and cough. With the continuous development of the chemical industry, people's development and utilization of marigold is not limited to its pharmacological effects, because the content of lutein in the flower can reach 6-12g / Kg, and it is now widely used as a raw material for natural pigment extraction. [0003] Lutein has a polyene epoxy structure, is a carotenoid, and is mainly composed of lutein, and its molecular ...

Claims

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Application Information

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IPC IPC(8): C07C403/24
CPCY02P20/54
Inventor 王东张法茂
Owner 青岛赛特生物科技有限公司
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