New process for extracting high-purity gardenia yellow pigment by membrane separation and purification technology

A technology for separation of gardenia yellow pigment and membrane, which is applied in the field of extraction technology of gardenia yellow pigment, can solve the problems of waste liquid pollution process, high energy consumption in the production process, high production cost, etc., and achieve high extraction efficiency and low production cost. The effect of low and stable product quality

Inactive Publication Date: 2010-03-03
广西山云生化科技股份有限公司
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AI Technical Summary

Problems solved by technology

[0004] The main technical problem to be solved in the present invention is: provide a kind of membrane separation and purification technology that adopts pure water leaching and membrane separation and purification, membrane concentration technology to combine to extract high-purity gardenia yellow pigment new process, to solve above-mentioned prior art There are organic solvents remaining in the finished gardenia yellow pigment, high energy consumption in the production process, high production cost, waste liquid generated by ion exchange resin regeneration will pollute the environment and complex process, etc.

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  • New process for extracting high-purity gardenia yellow pigment by membrane separation and purification technology

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Embodiment 1

[0019] A new process for extracting high-purity gardenia yellow pigment by membrane separation and purification technology (see figure 1 ), including the following steps:

[0020] (1) Pure water leaching: first wash the gardenia to remove impurities, then crush it into 1-3mm particles, then add pure water 8-12 times the weight of gardenia, add 0.0001-0.0002 Add pectinase and protease to the U enzyme meter, extract 2 to 3 times at a temperature of 45 to 55 ° C, each time for 4 hours, and combine the extracts;

[0021] (2) Coarse separation and impurity removal: the extract is separated through a flat plate centrifuge, a horizontal screw centrifuge and a disc centrifuge in order to remove the solid suspended matter of gardenia slag and gardenia oil in the extract , to obtain a clear and transparent extract for the next process, and to recover and comprehensively utilize gardenia residue and gardenia oil;

[0022] (3) Membrane separation and purification: the extract separated ...

Embodiment 2

[0025] A new process for extracting high-purity gardenia yellow pigment by membrane separation and purification technology (see figure 2 ), its basic operation steps are the same as embodiment one, and the difference is: in step (1), add ultrasonic to help lift, and its concrete operation steps are as follows:

[0026] (1) Extraction with pure water: first wash and remove gardenia, then crush it into 1-3mm particles, add it to the extraction equipment, and then add pure water 8-12 times the weight of gardenia, according to each gram of raw material Add 0.0001~0.0002U pectinase to gardenia and add 0.0001~0.0002U protease to each gram of raw material gardenia. Add pectinase and protease respectively. Underleaching 2 to 3 times, 2 hours each time, and combining the extracts;

[0027] (2) Coarse separation and impurity removal: its concrete operation steps are with embodiment one;

[0028] (3) Membrane separation and purification: its concrete operation steps are with embodimen...

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Abstract

The invention relates to a new process for extracting high-purity gardenia yellow pigment by a membrane separation and purification technology. The new process comprises processes of purified water leaching, crude separation and impurity removal, membrane separation and purification, and membrane concentration. After purified water extraction and ultrasonic assisted extraction, raw gardenia is separated by three centrifuges with different specifications and then obtained leaching liquor enters a membrane separation, purification and concentration system which consists of a microfiltration membrane (MF), an ultrafiltration membrane (UF), a nano-filtration membrane (NF) and a reverse osmosis membrane (RO), thus an OD value of the obtained gardenia yellow pigment can be controlled below 0.4 and color number can be increased to be more than 400. The finished product obtained by the process has no residual organic solvent and completely meets technical requirements for exporting to developed countries, including Europe and America, etc. as well as developed areas. The process is safe and clean in the whole production process, capable of realizing zero pollution and zero emission, has high environmental protection performance, and has advantages of greatly reducing energy consumption and lowering production cost due to the membrane concentration technology. The process further has advantages of simple process, stable product quality, high purity, etc.

Description

【Technical field】 [0001] The invention relates to a process for extracting gardenia yellow pigment, in particular to a new process for extracting high-purity gardenia yellow pigment by adopting membrane separation and purification technology. 【Background technique】 [0002] The existing industrialized production process of gardenia yellow pigment is to use organic solvent (ethanol, ether, acetone, etc.) as solvent to extract gardenia yellow pigment, then adsorb, separate and purify by ion exchange resin, and then wash repeatedly with organic solvent. The gardenia yellow pigment produced by the process has low purity, is unstable, and also has the following deficiencies: (1) organic solvents (ethanol, ether, acetone, etc.) are flammable and explosive, and there are great potential safety hazards in the production process (2) The extracted gardenia yellow color price is mostly below 300, and some are even below 200, and the finished product contains organic solvent (ethanol, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00B01D11/02B01D61/58C12S3/00
Inventor 朱潜荣朱建文
Owner 广西山云生化科技股份有限公司
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