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Method for preparing cabbage red pigment from purple cabbage

A technology of red pigment and cabbage, which is applied in the field of preparing cabbage red pigment, can solve the problems of strong odor of the product, inhibition of the application field of cabbage red pigment, poor solubility of cabbage red pigment, etc., and achieve the effect of good solubility and high purity

Active Publication Date: 2009-06-03
CHENGUANG BIOTECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional preparation method is to use the leaves of cruciferous and purple cabbage, extract them with weakly acidic water, refine, concentrate, sterilize, and then spray dry. The obtained cabbage red pigment has poor solubility and relatively strong odor. Inhibited the field of application of cabbage red pigment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: Using 100 kilograms of purple cabbage as raw material, after washing and inactivating enzymes, extract with acidic water, add citric acid to adjust its pH=3.0, extract at room temperature for 5 hours, the weight ratio of extraction material to liquid is 1:4, and the number of extractions for 3 times. Put 900 liters of the obtained extract into a sedimentation tank, add 0.9 kg of polysaccharide, stir evenly, let stand for 1-2 hours, filter with a precision filter, and discharge the precipitate. 850 liters of filtrate are processed with macroporous resin, the adsorption speed is 1000 liters / hour, the adsorption time is 1 hour, the washing speed is 2000 liters / hour, the forward washing time is 3 hours, the backwashing time is 2 hours, and then use 75% ethanol For analysis, the speed is 1000 liters / hour, and the time is 1.5 hours. After the analytical solution was filtered through a 0.22um ceramic membrane, it was concentrated using a nanofiltration membrane wit...

Embodiment 2

[0011] Example 2: Using 500 kilograms of purple cabbage as raw material, after cleaning and inactivating enzymes, extract with acidic water, add citric acid to adjust its pH=3.0, extract at normal temperature for 5 hours, the weight ratio of extraction material to liquid is 1:4, and the number of extractions For 3 times, 4250 liters of extracts were obtained and entered into a settling tank, 4.5 kilograms of precipitants were added, stirred evenly and left to stand for 2 hours, filtered with a precision filter, and the sediment was discharged, and 4000 liters of filtrate were processed with macroporous resin, and the adsorption rate was 1000 liters / hour, the adsorption time is 5 hours, the washing speed is 2000 liters / hour, the forward washing time is 3 hours, the backwashing time is 2 hours, the analysis is carried out with 75% ethanol, the speed is 1000 liters / hour, and the time is After 1.5 hours, the analytical solution was filtered through a 0.22um ceramic membrane, and co...

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PUM

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Abstract

The invention relates to a method for preparing cabbage red pigment from purple cabbage. The method comprises the following steps: 1. blanching for inactivation: cleaning the purple cabbage and blanching for inactivating enzyme; 2. extraction: extracting with acid aqueous solution 2-3 times with each time lasting 1-3 hours, and collecting all extracts; 3. precipitant treatment: pumping the extracts into a precipitating tank, adding a precipitant, keeping standing and filtering for removing a precipitate; 4. resin treatment: obtaining the cabbage red pigment by macroporous resin adsorption, water washing, water backwashing, analysis and concentration; 5. ultrafiltration: filtering the cabbage red pigment with a ultrafiltration membrane; 6. concentration with a nanofiltration membrane: condensing with the nano-filtration membrane with the intercepted molecular weight of 200 dalton to obtain liquid cabbage red pigment; 7. microbe sterilization; and 8. spray drying to obtain powdered cabbage red pigment. The method for obtaining the cabbage red pigment has the advantages of high yield, high color number, good solubility and no odor.

Description

technical field [0001] The invention relates to a method for preparing cabbage red pigment from purple cabbage. Background technique [0002] Pigments are widely used in food, feed, chemical, cosmetics and pharmaceutical industries, and natural pigments are one of the most important additives in many industries and fields, especially for the color and tone of food. With the improvement of quality awareness, synthetic pigments have gradually shown their shortcomings such as toxicity and harm, while natural pigments are directly derived from natural products, and extraction and refining do not bring any toxic substances, which has become a major research hotspot. And because most of the natural pigments contain beneficial ingredients to the human body, and also have certain health care effects, they are favored by people. [0003] Cabbage red is a natural pigment with natural color and moderate tone. It has a variety of nutritional and functional components. It is a widely us...

Claims

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Application Information

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IPC IPC(8): C09B61/00A23L1/275A23L5/43
Inventor 连运河安晓东张建霞程远欣
Owner CHENGUANG BIOTECH GRP CO LTD
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