Extraction method of odorless turmeric pigment with high stability

A technology of curcumin and extraction method, which is applied in the direction of chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of low extraction rate, poor quality, and odor of products, and achieve high color value and high yield , The effect of simple process

Inactive Publication Date: 2015-06-17
QINGDAO PENGYUAN KANGHUA NATURAL PROD
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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of low product extraction rate, poor quality, odor and instability in the existing technology, and provides a The extraction method of strong stability tasteless curcumin, is characterized in that, described method comprises the following steps:

Method used

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  • Extraction method of odorless turmeric pigment with high stability

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Embodiment 1

[0021] (1) Drying and crushing: Wash the ginger to remove impurities such as silt, put it in an oven to control the temperature at 80 ℃, bake for 8 minutes, put the baked ginger in a grinder and crush it until the particle size is 105 mesh sieve;

[0022] (2) Alkaline water extraction: Put the crushed ginger into the aqueous solution of caustic soda, adjust the pH=8.0, and extract at 55°C for 3 hours;

[0023] (3) Ultrasonic treatment: Then place it in an ultrasonic instrument at 45°C, the ultrasonic condition is 0°C, the ultrasonic power is 100W, the ultrasonic frequency is 45KHZ, and the treatment is 30min;

[0024] (4) Filtration and adsorption: filter the extract under reduced pressure, put the filtrate on the AB-8 macroporous resin adsorption column, and adsorb at a flow rate of 20M3 / h;

[0025] (5) Membrane treatment: use AHP ultrafiltration membrane at 3kg / cm 2 , under the condition of 20 ℃, add 35ml water to the treated solution, use NTR-7250 membrane at 3kg / cm 2 , p...

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Abstract

The invention relates to an extraction method of an odorless turmeric pigment with a high stability. The method is characterized by comprising the following steps: (1) drying through baking and grinding; (2) extracting by alkali water; (3) performing an ultrasonic treatment; (4) filtering and absorbing; (5) carrying out a membrane treatment; (6) washing by water and performing desorption; (7) performing reduced pressure concentration; (8) drying finished product. A special porous resin is adopted in a multi-stage elution technology and is co-used with a mixed oxidizing agent so as to produce a turmeric pigment having the advantages of high color value, high yield, no odor, light resistance, heat resistance, and high stability. A solvent extraction method is adopted, the soaking time and pigment impurities are effectively controlled, the technology is simple, and the pigment extraction rate is improved. The liquid turmeric extract after the absorption treatment is subjected to a membrane separation treatment so as to produce an odorless turmeric pigment. The odor of turmeric is reduced or even eliminated after membrane separation.

Description

technical field [0001] The invention belongs to the technical field of pigment extraction, and in particular relates to a method for extracting highly stable and odorless curcumin. Background technique [0002] With the deepening of human understanding of synthetic pigments, the demand for natural pigments will increase day by day. Curcumin is a natural edible pigment, which is bright in color and can increase the flavor of food. Curcumin can be widely used in food, medicine, health care, textile and other fields. The development and utilization of this product has broad market prospects and great development potential. [0003] Curcumin is a natural yellow pigment extracted from Curcuma longa, Curcuma longa, and Curcuma turmeric. It is a diketone, mainly including curcumin, demethoxycurcumin and dideoxycurcumin. Curcumin has good coloring and dispersibility, and has a special aroma, insoluble in cold water, acid-resistant, immediately turns red when it encounters alkali, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
CPCC09B61/00
Inventor 于帅臧启志展亚倩李进超
Owner QINGDAO PENGYUAN KANGHUA NATURAL PROD
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