Preparation method of high-purity natural curcumin product

A curcumin and natural technology, applied in the field of high-purity natural pigment curcumin products and preparation thereof, can solve the problems of high cost, long time, large consumption of organic solvents, etc., and achieve the effects of avoiding degradation, short time and high efficiency

Inactive Publication Date: 2016-10-26
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there have been many studies on the separation and purification of the three main components of curcumin, but most of them use thin-layer chromatography and column chromatography, and the separation amount of thin-layer chromatography is small, and the separation effect of column chromatography is not ideal. It cannot be separated well, and the purity of the obtained curcumin product is not high; and curcumin will consume a large amount of organic solvent in the extraction and elution, and the cost is very high
In addition, traditional organic solvent extraction takes a long time

Method used

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  • Preparation method of high-purity natural curcumin product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Turmeric rhizome dry powder 100g, 1,2-propanediol / alanine natural deep eutectic solvent 1kg, mix evenly, put it into an ultrasonic container, control the temperature of the material liquid at 15°C, 75W ultrasonic treatment for 1 hour, and then add 5.5kg to add deionized Add water to the extraction mixture, place it at 4°C for 2 hours, remove the supernatant after centrifugation at 5000rpm, and dry the precipitate in vacuum to obtain 0.2g of curcumin product with a purity of 98.5%

Embodiment 2

[0018] Turmeric rhizome dry powder 100g, 1,2-propanediol / alanine natural deep eutectic solvent 1.5kg, mix evenly, put it into an ultrasonic container, control the temperature of the material liquid at 20°C, 75W ultrasonic treatment for 1.5h, then add 12kg to add Add ionized water to the extraction mixture, place it at 4°C for 2 hours, remove the supernatant after centrifugation at 5000rpm, and dry the precipitate in vacuum to obtain 0.28g of curcumin product with a purity of 99.3%

Embodiment 3

[0020] Turmeric rhizome dry powder 100g, 1,2-propanediol / alanine natural deep eutectic solvent 2kg, mix evenly, put it into an ultrasonic container, control the temperature of the material liquid at 25°C, 75W ultrasonic treatment for 2 hours, then add 21kg of deionized water Put it into the extraction mixture, place it at 4°C for 2 hours, remove the supernatant after centrifuging at 5000 rpm, and dry the precipitate in vacuum to obtain 0.35 g of curcumin product with a purity of 99.5%.

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Abstract

The invention relates to a natural pigment curcumin product and a production process thereof, and belongs to the technical field of agricultural product deep processing. Turmeric rhizomes are used as raw materials; an eutectic solvent prepared from natural ingredients is an extracting agent; the curcumin is highly and selectively extracted by utilizing the characteristic of the natural eutectic solvent; the extraction efficiency is improved through ultrasonic treatment. After the extraction, water is used as a solvent; the curcumin is selectively precipitated by an anti-solvent method; sediments are subjected to centrifugation and vacuum drying; the high-purity natural curcumin product is prepared. The method has the advantages that the nontoxic and natural eutectic solvent and the water are used as the extracting agent and a precipitating agent, the production process is simple, efficient, safe and green; the defect that the traditional curcumin production needs a large number of noxious organic solvents and the complicated column separation process is overcome.

Description

technical field [0001] The invention belongs to the field of food processing, and relates to a high-purity natural pigment curcumin product and a preparation method thereof. Background technique [0002] Curcumin is one of the active components of the Chinese medicinal material turmeric (Curcuma longa L.), and is the main component of turmeric to exert its pharmacological effects. Curcuminoids mainly include curcumin (C 21 h 20 o 6 , accounting for about 70%), demethoxycurcumin (C 20 h 18 o 5 , accounting for about 15%), dedimethoxycurcumin (C 19 h 16 o 4 , accounting for about 10%), is a rare diketone colored substance in nature. Curcumin is one of the main bioactive components of turmeric plants. As a natural pigment, curcumin has strong coloring power, is safe and non-toxic, and can be widely used as a coloring agent in food products. It is regulated by FAO, WHO and my country's GB2760-2014 One of the most safe natural pigments. In addition, curcumin also has ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C07C49/255C07C45/78
CPCC07C45/78C09B61/00C07C49/255
Inventor 陈志刚冯芳蒋捷
Owner NANJING AGRICULTURAL UNIVERSITY
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