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Method for extracting chlorophyll iron-chromium salt from alga

A technology of chlorophyll and seaweed, applied in the direction of organic chemistry, can solve the problems of limited use, uncommon iron and chromium salts of chlorophyll, and large pollution of iron and chromium salts, and achieve the effects of low cost, stable green color, and high purification rate

Inactive Publication Date: 2015-06-17
QINGDAO PENGYUAN KANGHUA NATURAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Iron chromium salts are very polluting to the environment, and their use is subject to certain restrictions
[0004] The existing chlorophyll derivatives mainly replace the central magnesium element with other metal ions, or replace the hydrogen element with sodium ions to form salts. It is not common to make full use of chlorophyll in seaweed to produce chlorophyll iron chromium salts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Clean 1 kg of seaweed and dry it in an oven at 50°C for 6 minutes. Crushed to a particle size of 1.0 mm;

[0019] (2) Immerse the raw material in an ethanol aqueous solution with a volume concentration of 70% according to a solid-liquid ratio of 5g / ml, and extract at 75°C for 6 hours;

[0020] (3) Extract chlorophyll with a centrifuge, and filter the extracted chlorophyll liquid under reduced pressure;

[0021] (4) Dissolve 6 g of chromium chloride hexahydrate in caustic soda aqueous solution with pH = 7, slowly add to the above filtrate, adjust the pH to 8, stir, and make it fully react at room temperature;

[0022] (5) Add hydrochloric acid dropwise to adjust PH=3, add 4g of 99% ferrous sulfate solution, stir well, filter, and wash the precipitate;

[0023] (6) Then control the temperature at 65°C, age for 4 hours, collect the aged liquid and refrigerate at 5°C.

Embodiment 2

[0025] (1) Clean 1 kg of seaweed and dry it in an oven at 45°C for 7 minutes. Crushed to a particle size of 1.2 mm;

[0026] (2) Immerse the raw material in an aqueous solution of dimethylformamide with a volume concentration of 85% according to a solid-liquid ratio of 10g / ml, and extract at 55°C for 8 hours;

[0027] (3) Extract chlorophyll with a centrifuge, and filter the extracted chlorophyll liquid under reduced pressure;

[0028] (4) Dissolve 8 g of chromium chloride hexahydrate in caustic soda aqueous solution with pH = 8, slowly add to the above filtrate, adjust the pH to 9, stir, and make it fully react at room temperature;

[0029] (5) Add hydrochloric acid dropwise to adjust PH=4, add 6g of 99% ferrous sulfate solution, stir well, filter, and wash the precipitate;

[0030] (6) Then control the temperature at 55°C, age for 5 hours, collect the aged liquid and refrigerate at 6°C.

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Abstract

The invention relates to a method for extracting chlorophyll iron-chromium salt from an alga. The method is characterized by comprising the following steps: (1) cleaning, drying and pulverizing the alga; (2) extracting the alga in an aqueous solution of an organic solvent; (3) carrying out extraction to obtain chlorophyll through a centrifuge and performing vacuum filtration; (4) slowly adding chromic chloride hexahydrate into the filtrate from the step (3), and allowing chlorophyll to fully react with chromic chloride hexahydrate; (5) adjusting PH to a range of 3-4, adding a ferrous sulphate solution, and performing sufficient stirring, filtering, and washing to obtain precipitate; and (6) refrigerating the precipitated liquid at a temperature of 5-6 DEG C. According to the invention, a chlorophyll derivative of chlorophyll iron-chromium salt is prepared, and the method is simple and fast, is low in cost and high in purification rate, and has a bright application prospect in food and medicine fields.

Description

technical field [0001] The invention relates to the technical field of iron chromium salt production, in particular to a method for extracting chlorophyll iron chromium salt from seaweed. Background technique [0002] Seaweed is usually attached to the sea floor or some solid structure, and is a single plant or a long series of simple plants composed of basal cells. Aquatic plant that does not have stems or leaves when present in large numbers. There are many types of organisms named after seaweed. These bodies vary greatly and span a variety of life forms. The common point is that they live in seawater and can synthesize organic matter through their own chromatophores and photosynthesis. The most common macroalgae are seaweeds such as: green algae, red algae and brown algae. Because it is rich in chlorophyll, it provides a wide range of raw materials for pigment extraction. [0003] Iron chromium salt is a brown-black powder, which is the most widely used organic viscosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/22
CPCC07D487/22
Inventor 于帅臧启志展亚倩李进超
Owner QINGDAO PENGYUAN KANGHUA NATURAL PROD
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