Method for preparing multi-component high-color-value stable pigment

A technology of high color value and pigment, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of additional addition and loss of pigment, and achieve the effect of convenient use, simple preparation method and good stability of pigment

Inactive Publication Date: 2015-03-18
QINGDAO PENGYUAN KANGHUA NATURAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Quick-frozen food needs to be fried at high temperature during the production process. The original pigments are seriously lost during the frying and storage process. Additional pigments need to be added during the production process to better meet customer requirements. The first choice is higher security. natural pigments, but any single pigment that occurs in nature differs from the ideal shade

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 10kg of strawberries and squeeze them into a juicer, add 7kg of Tween, heat to 50°C, stir for 40 minutes, and prepare the slurry for later use; soak 4kg of arabic gum in pure water for 10 minutes, stir to dissolve completely, heat to 50°C, and continue Stir for 30 minutes, add the slurry prepared above, stir for 40 minutes, and cool to room temperature; put the grapes in a juicer to squeeze the juice, filter, and soak the filtrate in 45°C for 100 minutes with a citric acid aqueous solution with a weight percentage of 3‰ to obtain an extract ; The extract is first filtered through a vibrating sieve, and then filtered through a ceramic membrane. The filtered extract is adsorbed by an adsorption resin to separate the grape red pigment; the resin is eluted with 40% alcohol by volume, and the elution is obtained. Liquid; the eluate is concentrated for the first time through the nanofiltration membrane, then at 40°C, and then at 30°C, it is concentrated for the second tim...

Embodiment 2

[0020] Take 12kg of strawberries and squeeze them into a juicer, add 9kg of Tween, heat to 60°C, stir for 50 minutes, and prepare the slurry for later use; soak 5kg of arabic gum in pure water for 15 minutes, stir to dissolve completely, heat to 60°C, and continue Stir for 40 minutes, add the slurry prepared above, stir for 50 minutes, and cool to room temperature; put the grapes in a juicer to squeeze the juice, filter, and soak the filtrate in 50°C citric acid aqueous solution with a weight percentage of 5‰ for 110 minutes to obtain an extract ; The extract is first filtered through a vibrating sieve, and then filtered through a ceramic membrane. The filtered extract is adsorbed by an adsorption resin to separate the grape red pigment; the resin is eluted with 50% alcohol by volume, and the elution is obtained. liquid; the eluate is concentrated for the first time through the nanofiltration membrane, then at 50 ° C, and then at 40 ° C, the second concentration is carried out ...

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Abstract

The invention discloses a method for preparing a multi-component high-color-value stable pigment. The method is characterized by comprising the following steps: (1) pretreating strawberries; (2) preparing a modified strawberry pigment; (3) preprocessing grapes; (4) purifying; (5) preparing a grape red pigment; and (6) preparing a compound pigment. According to the method, at a lower temperature, the extraction is performed by virtue of low-concentration citric acid, the entire production process is continuous and environment-friendly and is hermetically sealed, and the citric acid solution can be repeatedly used; by virtue of concentration of a nanofiltration membrane, secondary concentration of a vacuum centrifugal thin film evaporator, and ultrafiltration technology, the prepared pigment has the color value of 150, the purity of 99.86% and the extraction rate of 89.88%. The compound pigment prepared by the method disclosed by the invention has the advantages of natural tone and good stability. The method for preparing the pigment is simple and is an environment-friendly chemical process and technology, and the pigment is convenient to use.

Description

technical field [0001] The invention belongs to the field of food pigment preparation, and in particular relates to a preparation method of multivariate high-color-value stable pigment. Background technique [0002] Pigment can also be called color scale, which is an index standard indicating the brightness of the display screen, which is what we call the color index. The color fullness and fineness of the display is determined by the color scale. Industry standards include 256 colors, 4096 colors, and 65536 colors. Many natural foods have their own color. These colors can promote people's appetite and increase the secretion of digestive juice, which is conducive to digestion and absorption, and is an important sensory indicator of food. However, natural food is easy to fade or change color during processing and preservation. In order to improve the color of food, people often add food coloring in the process of processing food to improve sensory properties. [0003] Now ...

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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