Preparation technology of red pigments of red rice

A preparation process and technology of red rice red, applied in azo dyes, organic dyes, chemical instruments and methods, etc., can solve the problems of poor stability of pigment products, high production costs, short shelf life, etc., and reduce energy consumption and auxiliary material consumption. , The effect of reducing production cost and improving product yield

Inactive Publication Date: 2012-11-28
CHANGCHUN HAITAO NATURAL PIGMENT
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AI Technical Summary

Problems solved by technology

The main disadvantages of the two methods are: low yield of pigment finished product and high production cost; poor stability of pigment finished product, subject to light and heat, easy to decompose and decay; poor product solubility, easy to precipitate and precipitate; short shelf life, generally six months

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Take 1,000 kg of black rice and add it to the multi-functional extraction tank with a hoist, pump 3,000 kg of pure water into the extraction tank with a pipeline pump, add 24 kg of food-grade phosphoric acid from the mouth of the tank, and use this aqueous solution of phosphoric acid at a constant temperature of 65°C Extract the black rice for 3 hours, dissolve the red rice red pigment in the phosphoric acid solution, collect the extract in the sedimentation tank after leaching once, then rinse the extracted raw material once with 2000 kg of pure water, and the rinse solution As the extract of the next batch; 150 kilograms of 1% acetic acid solution is prepared, and 1.5 kilograms of chitosan (produced by Jinan Haidebei Marine Biological Products Co., Ltd.) are dissolved in 150 kilograms of 1% acetic acid solution at a concentration of 1%. 150 kg of the prepared chitosan acetic acid solution was added to the precipitation tank, stirred for 1 hour, and left to stand for 4 ...

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Abstract

The invention relates to a preparation technology of red pigments of red rice, comprising the following steps: extracting a phosphoric acid solution; processing filter liquor obtained after the extraction with special chitosan for flocculation and clarification to lead proteins, tannin, pectin, dextrin and other impurities to deposit; obtaining the liquid red pigments of the red rice through rough filtration and fine filtration; and carrying out the acylation processing of the liquid red pigments of the red rice with a tartaric acid and a ferulic acid in the decompressing and concentrating process. Compared with the traditional technology, the process has higher ethanol extraction efficiency and reduced production cost; moreover, the process uses polyethyleneglycol as an auxiliary solventto well solve the problems of the poor dissolubility and the finished product stability of the red pigments of the natural red rice.

Description

technical field [0001] The invention relates to a preparation method of red beige pigment, which belongs to the technical field of food additives. Background technique [0002] Red beige red pigment is a kind of anthocyanin, the main component is cyanidin-3-glucoside, which is a natural plant pigment extracted from grass plant black fragrant rice, and it is mainly used as a high-grade natural colorant for preparation at present Wine, candy, ice cream, flavored milk drinks. The product form is liquid. With the progress of society and the improvement of living standards, it is a historical necessity for natural pigments to replace synthetic pigments. Therefore, the market prospect of natural red beige pigments is extremely broad. At present, there are two conventional preparation methods for red beige pigment, one is extraction with vegetable oil, light gasoline degreasing method; the other is extraction with edible ethanol, resin purification method. The main disadvantages...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00
Inventor 孟庆海
Owner CHANGCHUN HAITAO NATURAL PIGMENT
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