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Method for extracting chlorophyl from silkworm faeces by microwave pretreatment and preparing chlorophyllin copper and sodium salts

A copper sodium salt of chlorophyllin, pretreatment technology, applied in the direction of copper organic compounds, organic chemistry, etc., can solve the problems of large consumption of organic solvents, slow extraction speed, long time consumption, etc., to achieve the reduction of organic solvent consumption, extraction Time reduction, solving time-consuming effects

Inactive Publication Date: 2008-05-28
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] According to the extraction method of chlorophyll in silkworm excrement, it can be divided into organic solvent method and sodium hydroxide solution heating extraction method; the current general process method is organic solvent extraction method, which is easy to implement, simple to operate, and does not require high equipment; but organic The solvent extraction method is slow and time-consuming, the purity of the obtained extract is not high, and the consumption of organic solvents in the later stage of the extraction process is not conducive to industrial production; high energy consumption, many process steps, and low yield of the obtained product are currently limiting silkworm A technical bottleneck in the development of sand resources; after the microwave radiation pretreatment material extraction chlorophyll method irradiates the cell tissue that constitutes silkworm excrement, the cell tissue is uniformly destroyed, greatly reducing the resistance of chlorophyll to penetrate the cell and dissolve into organic solvents, so that the extraction of chlorophyll The speed and extraction rate will be greatly improved

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  • Method for extracting chlorophyl from silkworm faeces by microwave pretreatment and preparing chlorophyllin copper and sodium salts

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Embodiment Construction

[0017] (1) First take 100g of silkworm excrement and crush it, add 50ml of 60% ethanol solution as a cell wall-breaking aid; stir evenly, soften for 5 minutes, spread the silkworm excrement into a thin layer, and put it into a microwave oven for 70 seconds of radiation;

[0018] (2) Add 800ml of 95% ethanol to the microwave-treated material, and extract it for 45min at a temperature of 335K; then filter and separate;

[0019] (3) The separated filtrate was boiled and concentrated to 300ml under reduced pressure, and ethanol was recovered; the concentrated solution was added with 6g of NaOH of material quality, and saponified at 350K for 45min; then it was extracted and separated.

[0020] (4) Add 5 mol / L of HCl to the lower filter liquid extracted and separated to adjust the pH value to 2.6; at a temperature of 355K, add CuSO 4 10ml of 10% solution, copper generation for 40min; then filter and wash, dissolve the obtained solid chlorophyllocopper acid in 80ml of acetone, add 2...

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Abstract

The process for extracting chlorophyll from silkworm faeces assisted by microwave belongs to the field of combination of chemical technology and electronic technology. The extraction process comprises using cell disruption aid as wetting agent of silkworm faeces and microwave energy receptor, pretreating silkworm faeces by microwave radiation; then, adding solvent, and extracting at some temperature to get chlorophyll. The result shows that the extraction rate of chlorophyll in silkworm faeces treated by microwave is higher than that by traditional method, and the extraction time is reduced obviously.

Description

technical field [0001] The invention belongs to the technical field of microwave radiation-assisted extraction, in particular to a method for extracting chlorophyll from silkworm excrement and preparing it into salt. Background technique [0002] Chlorophyll is ubiquitous in plants in nature, and can be widely used as colorants and deodorants in food and cosmetics; it can be used in medicine to treat infectious hepatitis, gastric and duodenal ulcers, chronic nephritis and acute pancreatitis , it can also enhance hematopoietic function and promote the recovery of the body damaged by radiation. It is used in surgery to treat burns, hemorrhoids and uterine diseases. Free chlorophyll is unstable and difficult to dissolve in water, so it is inconvenient to use; making chlorophyll into copper chlorophyllin sodium is soluble in water, and the stability is greatly improved. It can be used in soft drinks, candy, fruit powder, sherbet, prepared wine, It can be used for the coloring o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D487/22C07F1/08
Inventor 于才渊丁洁王宝和任国清
Owner DALIAN UNIV OF TECH
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