A kind of method that takes silkworm excrement as raw material to prepare chlorophyll metal sodium salt

A metal sodium salt and chlorophyll technology, applied in the direction of organic chemistry, can solve the problems of low purity of chlorophyll metal sodium salt, low impurity removal rate, and low product yield, so as to shorten softening time, increase extraction rate, and reduce production cost Effect

Active Publication Date: 2015-12-30
WEIFANG HANXING CHLOROPHYLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing technology for producing metal chlorophyll sodium salt using silkworm excrement as a raw material has a low removal rate of impurities contained in the preparation process, which leads to low purity of the final product sodium metal chlorophyll salt, and the existing preparation process product yield is low, high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing copper chlorophyllin sodium salt with silkworm excrement as raw material, comprising the steps of:

[0039] (1) Impurity removal of raw materials: transport the silkworm excrement to a vibrating screen through a conveyor belt and sieve it. The mesh size of the screen is 6-14 mesh, preferably 6-8 mesh, to remove dust and fine silkworm excrement, and obtain selected silkworm excrement;

[0040] (2) Softening of raw materials: transport the selected silkworm excrement to the mixer, add water, the volume ratio of selected silkworm excrement to water is 2-2.5:1, stir, mix evenly, and let stand for 4-8 hours to soften;

[0041] (3) Soaking: Add the softened selected silkworm excrement into the soaking tank, and then add acetone solution with a volume concentration of 90-95% into the soaking tank. The volume ratio of selected silkworm excrement to acetone solution is 1.5-2: 1. Turn on the circulation pump, soak the selected silkworm excrement at 35-38°C...

Embodiment 2

[0053] A kind of method that takes silkworm excrement as raw material to prepare magnesium chlorophyll sodium salt, comprises the steps:

[0054] Steps (1) to (8) in this embodiment are the same as steps (1) to (8) in Implementation 1, except that:

[0055] (9) Magnesium: Add magnesium chloride to the saponification solution, the volume ratio of magnesium chloride to pasty chlorophyll is 0.02-0.03:1, stir and react at 32-35°C for 1 hour, let stand to separate layers, and remove the upper layer , to obtain magnesium solution;

[0056] (10) Acidification: add hydrochloric acid solution with a volume concentration of 25-30% to the magnesium solution, adjust the pH to 2-3, add water, let stand, and precipitate magnesium acid;

[0057] (11) Washing: Wash magnesium acid with water, filter out water, then add gasoline and ethanol solution with a volume concentration of 85%, the volume ratio of metal acid solution to ethanol solution is 1:1~1.5, the ratio of metal acid solution to ga...

Embodiment 3

[0061] A method for preparing ferric chlorophyll sodium salt with silkworm excrement as raw material, comprising the steps of:

[0062] Steps (1) to (8) in this embodiment are the same as steps (1) to (8) in Implementation 1, except that:

[0063] (9) Ironization: add ferrous chloride to the saponification solution, the volume ratio of ferrous chloride to chlorophyll paste is 0.02-0.03:1, stir and react at 32-35°C for 1 hour, and let stand Separate the layers, remove the supernatant, and obtain the ferrochemical solution;

[0064] (10) Acidification: Add hydrochloric acid solution with a volume concentration of 25-30% to the ironing solution, adjust the pH to 2-3, add water, let stand, and precipitate ferric acid;

[0065] (11) Washing: Wash ferric acid with water, filter out water, then add gasoline and ethanol solution with a volume concentration of 85%, the volume ratio of metal acid solution to ethanol solution is 1:1~1.5, the ratio of metal acid solution to gasoline The...

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Abstract

The invention belongs to the technical field of chlorophyll metallic sodium salt preparation, and particularly relates to a method for preparing a chlorophyll metallic sodium salt by taking silkworm feces as a raw material. The method comprises the following steps of (1) impurity removal of raw materials; (2) raw material softening; (3) immersing; (4) primary concentration; (5) separation; (6) secondary concentration; (7) paste dissolving and impurity removal; (8) saponification; (9) metallization; (10) acidification; (11) washing; (12) drying; and (13) salt forming. According to the method for preparing a chlorophyll metallic sodium salt by taking the silkworm feces as a raw material, which is disclosed by the invention, the purity and yield of products are increased, the yield can reach 1.5-2%, and the energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of metal chlorophyll sodium salt preparation, and in particular relates to a method for preparing sodium chlorophyll metal salt from silkworm excrement. Background technique [0002] Silkworm excrement is the feces excreted after eating mulberries. It is rich in chlorophyll, vitamin E, K pectin and other nutrients. Currently, silkworm excrement is often used as fertilizer or feed for pigs, sheep, and fish, or directly disposed of as garbage. Chlorophyll belongs to the magnesium porphyrin ring complex, which is generally fat-soluble and not easily soluble in water. The magnesium ions in chlorophyll molecules are easily replaced by copper, iron, cobalt, magnesium and other ions to become chlorophyll derivatives. Chlorophyll itself is extremely unstable to physical and chemical factors such as light, heat, acid, alkali, and enzymes, while its derivatives are relatively stable, so chlorophyll is generally made i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D487/22
CPCC07D487/22
Inventor 王大鹏张世果张云建
Owner WEIFANG HANXING CHLOROPHYLL
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