Purplish red pigment preparation method with golden silk jujube

A technology of golden jujube and jujube red, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve problems such as harm to human body, reduce environmental pollution, improve economic and social benefits, and achieve product stability good effect

Active Publication Date: 2009-10-14
QINGDAO PENGYUAN KANGHUA NATURAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most manufacturers use chemically synthesize

Method used

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  • Purplish red pigment preparation method with golden silk jujube

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] 2 Preparation of maroon pigment aqueous solution

[0033] Put the taken off jujube skins into an extraction tank with a porous mesh surface, and rinse and extract the jujube skins with an alkaline aqueous solution of 1:3-9. The pH of the alkaline aqueous solution is 9-12. Extract the aqueous solution of maroon pigment through the mesh

[0034] 3 Purification of the aqueous solution of maroon pigment

[0035] Adjust the PH value of the maroon pigment solution extracted from the mesh surface to neutral or slightly acidic, add flocculant / enzyme preparation 1-5‰, stir evenly, let stand for 1-10 hours, and filter the supernatant to obtain refined maroon pigment Aqueous solution

[0036] 4Adsorption and separation

[0037] Put the refined red pigment solution on the resin adsorption column. The adsorption column is filled with a macroporous resin that specifically adsorbs maroon pigment. The feed flow rate is 20-60m3 / h. The saturated resin is adsorbed and washed with deionized wa...

Example Embodiment

[0046] Example 1

[0047]700 kg of semi-dried golden silk jujube. After cleaning, peel it with a peeling machine. The separated jujube skins are transported into the extraction tank using a conveyor belt, according to the volume of jujube skin: lye = 1:3-9 After adding the already adjusted lye, measure the PH value after stirring, add sodium hydroxide to adjust the PH value to 9-12, extract the filtrate after 12 hours of extraction and put it into another extraction tank, add the same volume of the solution to adjust the pH Value, draw out the filtrate, repeat the extraction three times, combine the three filtrates, and adjust the PH value to neutral. Add 1-5‰ flocculant to the maroon pigment solution extracted from the mesh surface, stir evenly, let stand for 1-5 hours, filter the supernatant to obtain a refined maroon pigment aqueous solution, pass the filtrate directly to the column, and pass the resin before the column Treatment: Before loading the column, you need to soak in ...

Example Embodiment

[0048] Example 2

[0049] 500 kg of semi-dried golden silk jujube. After cleaning, peel it with a peeling machine. The separated jujube skins are transported into the extraction tank using a conveyor belt, according to the volume of jujube skin: lye = 1:3-9 After adding the already adjusted lye, measure the PH value after stirring, add sodium hydroxide to adjust the PH value to 9-12, extract the filtrate after 12 hours of extraction and put it into another extraction tank, add the same volume of the solution to adjust the pH Value, draw out the filtrate, repeat the extraction three times, combine the three filtrates, and adjust the PH value to neutral. Add 1-5‰ flocculant to the maroon pigment solution extracted from the mesh surface, stir evenly, let stand for 1-5 hours, filter the supernatant to obtain a refined maroon pigment aqueous solution, pass the filtrate directly to the column, and pass the resin before the column Treatment: Before loading the column, you need to soak in...

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Abstract

The invention discloses a purplish red pigment preparation method with golden silk jujube, a natural plant, as raw material. The method comprises the following steps of: obtaining golden silk jujube-cleaning-peeling-immersing and extracting with the alkaline aqueous solution-processing with enzyme preparation and edible flocculant-filtrating-filtrate passing a column-eluting with ethanol-saponifying-vacuum concentration-vacuum freezing drying or spraying drying-obtaining the product. The purplish red pigment is a pure natural pigment resource which can make up for the shortage of the existingnatural pigments and meet the demand in the industries of cosmetic, food, dying, and drink. The method has the advantages of advanced technique, good product stability, being non-toxic and odor-free,maximum and comprehensive use of the pigment of silk jujube, reducing the use of organic solvents, saving energy, reducing environment pollution caused by the waste water, simplifying production technique and significantly reducing production cost and increasing the economic benefits, thus obtaining good economic benefits and social benefits.

Description

technical field [0001] The invention relates to a method for preparing a substance by using natural plants as raw materials, in particular to a method for preparing bougainvillea pigment from the bark of jujube jujube of the natural plant. . Background technique [0002] With the country's strict requirements on the use of pigments in food, natural pigments will gradually replace synthetic pigments. In the production of cosmetics, food, dyes, and beverages, a large amount of red pigment is needed to increase the appearance and color of food. However, most manufacturers use chemically synthesized pigments, which are more harmful to the human body. [0003] The jujube red pigment extracted from the pure natural plant golden silk jujube is a relatively ideal natural pigment resource. It has high pigment content, excellent water solubility, clear and transparent solution, bright color, natural, and high safety. It is used in cosmetics, food , dyes, beverages, etc. have great ...

Claims

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Application Information

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IPC IPC(8): C09B61/00C12S3/00
Inventor 展鹏远
Owner QINGDAO PENGYUAN KANGHUA NATURAL PROD
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