A method for extracting and purifying beet red pigment from concentrated red beet juice

A technology of beet red pigment and concentrated juice, which is applied in the field of extraction and purification of beet red pigment, can solve the problems of incomplete removal of impurities and low color value in beet red, and achieve the goals of reducing degradation loss, high color value and reducing impurity content Effect

Active Publication Date: 2016-06-08
天津市尖峰天然产物研究开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are many patents for the extraction and purification of beet red. Chinese patents CN102093747B, CN102675910A, and CN101429347A use macroporous resins to purify beet red. They all use a single resin. Impurities in beet red are not completely removed, making the color price low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for extracting and purifying beet red pigment from concentrated beet juice, comprising the steps of:

[0026] (1) Red beet concentrated juice, red beet concentrated juice has a color value of 3 and a Brix of 50°Bx, and is diluted with citric acid water of pH 3.0 to a Brix of 4°Bx to obtain red beet concentrated juice dilution;

[0027] (2) Put the red beet concentrated juice dilution on the mixed resin column, the mixed resin is composed of cation exchange resin 001×7 and macroporous resin DM21 with a mass ratio of 5:95, and use 1 times the column volume of deionized water respectively 1. The volume percent concentration of 1 column volume is 30% ethanol aqueous solution, and the volume percent concentration of 1.5 column volumes is 70% ethanol aqueous solution for elution, and the 70% ethanol eluent is collected to obtain the beet red eluent;

[0028] (3) Concentrate the beet red eluate on a water bath single-effect concentrator with a water bath temperature ...

Embodiment 2

[0030] A method for extracting and purifying beet red pigment from concentrated beet juice, comprising the steps of:

[0031] (1) Red beet concentrated juice, red beet concentrated juice is a red beet concentrated juice with a color value of 5 and a Brix of 65°Bx, diluted with citric acid water of pH 4.0 to a Brix of 5°Bx to obtain red beet concentrated juice dilution;

[0032] (2) Put the diluted red beet juice concentrate on a mixed resin column. The mixed resin is composed of cation exchange resin 7320 and macroporous resin O3K7 with a mass ratio of 50:50. Use 1 times the column volume of deionized water, 1 The volume percentage concentration of 1 times column volume is 30% ethanol aqueous solution, and the volume percentage concentration of 1.5 times column volume is 70% ethanol water solution for elution, and the 70% ethanol eluate is collected to obtain the beet red eluate;

[0033] (3) Concentrate the beet red eluate on a water bath single-effect concentrator with a wa...

Embodiment 3

[0035] A method for extracting and purifying beet red pigment from concentrated beet juice, comprising the steps of:

[0036] (1) Dilute red beet juice concentrate, which has a color value of 10 and a Brix degree of 75°Bx, and dilutes it to a Brix degree of 6°Bx with pH 5.0 citric acid water to obtain red beet concentrated juice dilution;

[0037] (2) Put the red beet concentrated juice dilution on the mixed resin column, the mixed resin is composed of cation exchange resin CD-180 and macroporous resin SP207 with a mass ratio of 95:5, and use 1 times the column volume of deionized water respectively 1. The volume percent concentration of 1 column volume is 30% ethanol aqueous solution, and the volume percent concentration of 1.5 column volumes is 70% ethanol aqueous solution for elution, and the 70% ethanol eluent is collected to obtain the beet red eluent;

[0038] (3) Concentrate the beet red eluent on a water bath single-effect concentrator with a water bath temperature of...

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Abstract

The invention discloses a method for extracting and purifying beet red pigment from concentrated red beet juice. The method comprises the following steps: (1) diluting the concentrated red beet juice with citric acid water of pH 3 to pH 5 to a Brix degree of 4° Bx~6°Bx, to obtain the red beet concentrated juice dilution; (2) Put the red beet concentrated juice dilution on the mixed resin column, and perform elution, separation and purification to obtain the beet red eluent; (3) The beet red eluate The red eluate is concentrated to a Brix degree of 20°Bx-30°Bx on a water-bath single-effect concentrator, and spray-dried to obtain beet red powder. When the method of the present invention removes the sugar in the red beet juice, it also removes other impurities such as inorganic salts therein, which improves the production efficiency; moreover, the low-temperature vacuum concentration of the water-bath single-effect concentrator reduces the degradation of raw materials, and can obtain A beet red product with a higher color price.

Description

technical field [0001] The invention belongs to a method for extracting and purifying beet red pigment, in particular to a method for extracting and purifying beet red from red beet concentrated juice. Background technique [0002] Beet red (Beetred) is a water-soluble nitrogen-containing pigment. It is named after it was first discovered in beetroot. It is a pyridine derivative. The general term for all colored compounds, including two forms of betacyanin and betaxanthin. Betalain is widely found in Chenopodiaceae, Amaranthaceae, Cactaceae, Phytaceae and other plants, and some higher fungi also accumulate betalain. Betalains generally exist in the flowers, fruits and some vegetative organs of plants. The main component of beet red is betanine (Betanine), which accounts for 75% to 95% of the red pigment, and the rest is isobetanin, prebetanin and isobetanin; betanin includes betaflavin Ⅰ and betaflavin II. [0003] Beet red solid is a purple powder, easily soluble in wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00C09B67/54
Inventor 吴巍
Owner 天津市尖峰天然产物研究开发有限公司
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