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Method for preparing sodium copper chlorophyllin from cauliflower leaves as raw materials

A technology of copper chlorophyll sodium salt and chlorophyll cupric acid, which is applied in the field of preparation of food additives, can solve the problems of high processing cost, toxic solvent residue, complicated process, etc., and achieve the effects of improving efficiency, stable quality, and simple process

Active Publication Date: 2014-12-03
YUNNAN TONGHAI YANG NATURAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of complex process, high processing cost and residual toxic solvent in the method for preparing sodium copper chlorophyllin in the prior art, the present invention provides a method for preparing sodium copper chlorophyllin using cauliflower leaves as raw materials , its technical scheme is as follows:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Extraction: 20kg of fresh cauliflower leaves are beaten with a beater, the speed of the beater is 100 rpm, the filter screen of the beater is 20 mesh, and then centrifuged with a centrifuge at a speed of 1200 rpm to remove 9.5kg 10.5kg of cauliflower filter residue was obtained;

[0044] Each time, use 40kg of alcohol with a pH value of 12.05 and a concentration of 95% for leaching. The pH value of the alcohol is adjusted by adding a solution of 10-15% NaOH. 80kg, after merging, filter with 200 mesh filter cloths to obtain 79.8kg of chlorophyll solution;

[0045] (2) Copper generation: Add copper sulfate solution with a mass percentage concentration of 15% to the chlorophyll solution while stirring until the color solution turns dark green, the weight ratio of chlorophyll solution to copper sulfate solution is 10000:8, and add 0.75kg The mass percent concentration of hydrochloric acid is 31% to adjust the pH value of the solution at 2.95, and then heated to 55 ° C,...

Embodiment 2

[0052] (1) Leaching: 200kg of fresh broccoli leaves are beaten with a beater, the speed of the beater is 100 rpm, the filter screen of the beater is 20 mesh, and then centrifuged at a speed of 1200 rpm to remove 101kg of water Afterwards, obtain cauliflower filter residue 99kg;

[0053]Each time, use 400kg of alcohol with a pH value of 12.01 and a concentration of 95% for leaching. The pH value of the alcohol is adjusted by adding a solution of 10-15% NaOH. 800kg, after merging, filter with 200 mesh filter cloths to obtain 796kg of chlorophyll liquid;

[0054] (2) Copper generation: Add copper sulfate solution with a mass percentage concentration of 15% to the chlorophyll solution while stirring until the color solution turns dark green, the weight ratio of chlorophyll solution to copper sulfate solution is 10000:8, and add 7.3kg The mass percent concentration of 31% hydrochloric acid is used to adjust the pH value of the solution at 2.97, and then heated to 55°C, then stirre...

Embodiment 3

[0061] (1) Extraction: 1000kg of fresh cauliflower leaves are beaten with a beater, the speed of the beater is 100 rpm, the filter screen of the beater is 20 mesh, and then centrifuged at a speed of 1200 rpm to remove 497 kg of cauliflower. After moisture, obtain cauliflower filter residue 503kg;

[0062] Each time, use 2000kg of alcohol with a pH value of 12.04 and a concentration of 95% for leaching. The pH value of the alcohol is adjusted by adding a solution of 10-15% NaOH. 4000kg, after merging, filter with 200 mesh filter cloth to obtain 3963kg of chlorophyll solution;

[0063] (2) Copper generation: Add copper sulfate solution with a mass percentage concentration of 15% to the chlorophyll solution while stirring until the color solution turns dark green, the weight ratio of chlorophyll solution to copper sulfate solution is 10000:8, and add 33kg of Adjust the pH value of the solution to 3.0 with hydrochloric acid with a concentration of 31% by mass, then heat it to 55°...

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Abstract

The invention discloses a method for preparing sodium copper chlorophyllin from cauliflower leaves as raw materials, belongs to the technical field of food additives, and solves the problems of complicated process and high processing cost of an existing process for preparing sodium copper chlorophyllin. The method comprises the following steps: pulping fresh cauliflower leaves to obtain cauliflower filter residues; adding an extracting agent into the cauliflower filter residues, and extracting to obtain chlorophyll liquid; adding a copper sulfate aqueous solution and a hydrochloric acid solution into the chlorophyll liquid to obtain copper liquid; enabling the copper liquid to pass through anion resin to obtain copper chlorophyllin extracting liquid; performing vacuum ethanol recovery on the copper chlorophyllin extracting liquid, and filtering out a water phase to obtain copper chlorophyllin settlings; dropwise adding a NaOH aqueous solution into the copper chlorophyllin settlings to obtain sodium copper chlorophyllin liquid; filtering the sodium copper chlorophyllin liquid by adopting an ultrafiltration membrane to obtain sodium copper chlorophyllin filter liquor; drying the sodium copper chlorophyllin filter liquor to obtain sodium copper chlorophyllin. According to the method, the production cost is low and the product purity is high.

Description

technical field [0001] The invention belongs to the technical field of food additives, in particular to a method for preparing food additives from cauliflower leaves. Background technique [0002] The method for extracting sodium copper chlorophyllin from alfalfa and silkworm excrement in the prior art has the defects of complicated process and high processing cost, and organic solvents such as acetone are used to remove impurities during the preparation process, so the final product has toxic solvent remains. Contents of the invention [0003] In order to solve the problems of complex process, high processing cost and residual toxic solvent in the method for preparing sodium copper chlorophyllin in the prior art, the present invention provides a method for preparing sodium copper chlorophyllin using cauliflower leaves as raw materials , its technical scheme is as follows: [0004] A kind of method that cauliflower leaf is prepared as raw material copper chlorophyllin so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/22
CPCC07D487/22
Inventor 杨家秀杨从波刘慧
Owner YUNNAN TONGHAI YANG NATURAL PROD
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