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Technology for improving ang-kak red pigment quality by utilizing enzyme preparation

A technology of red rice red and enzyme preparation, which is applied in application, food preparation, azo dyes, etc. It can solve the problems of color loss, viscous precipitation, and affecting product quality, and achieve low cost, simple process, and high color value. high effect

Active Publication Date: 2010-06-23
CHENGUANG BIOTECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many studies on the extraction of red rice red pigment from black rice, but most of the red rice red pigment obtained by the existing extraction process has precipitation problems. The reason is that the design of extraction and filtration is not reasonable enough, and many impurities cannot be removed. Fully removed, pigment products contain a large amount of pectin, starch, cellulose and protein impurities, which will cause viscous precipitation during temperature changes, loss of color value, and seriously affect product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] (1), get 100 kilograms of Jilin black fragrant rice raw material, extract in acidic ethanol solution. The extract is 600g of 0.3% citric acid added to 50% acidic ethanol; the extraction temperature is 40°C; the weight ratio of Jilin black fragrant rice to the extract is 1:2; the extraction time is 3 hours for the first pass, and 3 hours for the second pass. , Three times for 2 hours. (2) The three extracts were combined, concentrated under reduced pressure using a thin-film evaporator until alcohol-free, 12 g of compound enzyme preparation was added, and reacted at 55° C. for 3 hours. (3) Add 0.5 g of polysaccharide precipitation agent, cool to room temperature and let it settle for 24 hours. (4) Filter the precipitated supernatant through a diatomaceous earth filter to fully remove impurities. (5) The obtained red rice red filtrate is subjected to macroporous resin adsorption, firstly washed with water, drained of water, and then analyzed with 70% alcohol. The adsor...

Embodiment 2

[0012] (1), get 200 kilograms of Jilin black fragrant rice raw materials, extract in acidic ethanol solution. The extraction solution is 800g of 0.2% citric acid added to 40% acidic ethanol; the extraction temperature is 40°C; the ratio of solid to liquid is 1:2; the extraction time is: 4 hours for the first pass, 2 hours for the second and third passes . (2) The three extracts were combined, concentrated under reduced pressure by a thin film evaporator until alcohol-free, added 25 g of compound enzyme preparation, and reacted at 55° C. for 3 hours. (3) Add 1 g of polysaccharide precipitation agent, cool to room temperature and let it settle for 36 hours. (4) Filter the precipitated supernatant through a diatomaceous earth filter to fully remove impurities. (5), the obtained red rice red filtrate is subjected to macroporous resin adsorption, first washed with water, drained of water, and then analyzed with 70% alcohol. The adsorption speed is 1.0m 3 / hour, washing speed 2...

Embodiment 3

[0014] (1), get 500 kilograms of Jilin black fragrant rice raw materials, extract in acidic ethanol solution. The extraction solution is 3000g of 0.3% citric acid added to 60% acidic ethanol; the extraction temperature is 50°C; the ratio of solid to liquid is 1:2; the extraction time is: 3 hours for the first pass, 2 hours for the second and third passes. (2) Combine three extracts, concentrate under reduced pressure with a thin-film evaporator until alcohol-free, add 60 g of compound enzyme preparation, and react at 55° C. for 3 hours. (3) Add 2.5g of polysaccharide precipitation agent, cool to room temperature and let it settle for 24 hours. (4) Filter the precipitated supernatant through a diatomaceous earth filter to fully remove impurities. (5), the obtained red rice red filtrate is subjected to macroporous resin adsorption, first washed with water, drained of water, and then analyzed with 70% alcohol. The adsorption speed is 0.8m 3 / hour, washing speed 2.0m 3 / hour...

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PUM

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Abstract

The invention belongs to the food additive natural pigment refining technical field and in particular relates to a technology for refining ang-kak red pigment by utilizing enzyme preparation. Black rice pigment is extracted from Jilin black fragrant rice and concentrated by alcohol, pectin, starch, cellulose and protein in the pigment are removed by enzyme preparation reaction, precipitant is added for static settlement, diatomite filtration and resin treatment are carried out, then concentration is carried out to obtain the ang-kak red pigment, and the liquid ang-kak red pigment is subject to spray drying, thus obtaining powdery ang-kak red pigment. Through enzyme preparation reaction, impurities are fully and effectively separated, and the obtained product has high purity, good stability and no sediment when being dissolved in water. Technology is simple, cost is low, thus being applicable to industrialized production.

Description

technical field [0001] The invention belongs to the field of refining food additive natural pigments, in particular to a process for refining red beige pigments by using enzyme preparations. Background technique [0002] With the vigorous development of the food industry, the demand for natural pigments is also increasing day by day. Because natural pigments are safe to use, natural in color and have high nutritional value, natural pigments are more and more popular among people. The red rice red pigment extracted from Jilin black fragrant rice is a high-quality natural pigment. It is widely used in food, medicine, beverage, wine and other industries for coloring. The shape of black rice will not be damaged during the extraction process. More black rice is still edible, which is conducive to the comprehensive application of black rice. [0003] At present, there are many studies on the extraction of red rice red pigment from black rice, but most of the red rice red pigment ...

Claims

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Application Information

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IPC IPC(8): C09B61/00C12S3/00A23L1/275A23L5/43
Inventor 暴海军袁红波武胜学薛强
Owner CHENGUANG BIOTECH GRP CO LTD