Natural ferrous aluminum chlorophyll and preparation method thereof

A technology of chlorophyll, iron and aluminum, which is applied in the field of natural pigment salt and its preparation, and achieves the effects of low price, high yield and simple and convenient preparation method

CN102584838AInactive Publication Date: 2012-07-18NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of natural ferrous aluminum chlorophyll, which is used for preparing natural ferrous aluminum chlorophyll (also named aluminum ferrous chlorophyll). In the method, sodium ferrous chlorophyllin and an aluminum salt are taken as raw materials and are substituted directly to obtain the natural ferrous aluminum chlorophyll in one step. The method comprises the following steps of: dissolving the sodium ferrous chlorophyllin and the aluminum salt into water and a buffer solution according to a certain mass ratio, wherein the pH value of a reaction solution is 7.5-9; slowly adding an aluminum salt solution into a sodium ferrous chlorophyllin solution, stirring magnetically at the speed of 1,000 revolutions per minute, and reacting fully; and aging, separating, and drying at the temperature of 50-80 DEG C to obtain black (deep green) ferrous aluminum chlorophyll. The preparation method has the advantages of easiness, convenience, low cost, no production of side products, environmental friendliness and high yield. Raw materials needed by synthesis are readily-available, have low prices, are nontoxic and harmless, and have indefinite development and application prospects on the aspect of medical medicaments, functional materials and the like.
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Description

technical field

[0001] The invention relates to a natural pigment salt and a preparation method thereof, in particular to a preparation method of natural iron-aluminum chlorophyll salt. The obtained natural iron-aluminum chlorophyll, also known as iron-aluminum chlorophyllin. Background technique

[0002] Chlorophyll is an important magnesium porphyrin compound, which belongs to natural pigment, and there are many kinds of its derivatives. Such as: sodium copper chlorophyllin, sodium calcium chlorophyllin, sodium cobalt chlorophyllin, sodium iron chlorophyllin, etc., are used in chemical, pharmaceutical, food, health care and other industries. For example, it can be used as a food additive for candy, cakes, animal feed, etc.; as an additive for making soap, perfume, and other products; it can also be used to treat cancer, tumors, hematopoiesis, and liver protection. The natural chlorophyll iron-aluminum salt synthesized by the patent of the present invention is also useful...

Examples

Embodiment 1

[0027] Sodium ferric chlorophyll is dissolved in water with a solution concentration of 0.67g / 100ml and a pH value of 8.5. Anhydrous aluminum trichloride is dissolved in a buffer solution with a pH of 7, and the pH of the solution is 6.8. Slowly add the aluminum salt solution to the ferric chlorophyllin sodium salt. Stir at a speed of 1000r / min and make it fully react at room temperature. Aging at room temperature for 5h. Separate and dry at 80°C to obtain iron and aluminum chlorophyll. The yield was 85%. Carry out the measurement of each index. Wherein, by AVATAR360 type Fourier transform infrared spectrometer, UV7652 spectrophotometer and ZCR-1 differential calorimeter, obtain chlorophyll iron sodium salt and chlorophyll iron aluminum salt spectrogram (see attached Figure 1~6 ), and analyzed and compared, it was determined that the product was chlorophyll iron-aluminum salt.

Embodiment 2

[0029] Sodium iron chlorophyllin is dissolved in water and its solution pH is 8.9. Anhydrous aluminum trichloride is dissolved in a buffer solution with a pH of 7, and the pH of the solution is 6.6. Slowly add the aluminum salt solution to the ferric chlorophyllin sodium salt. Stir at a speed of 1000r / min and make it fully react at room temperature. Aging at room temperature for 7h. Separate and dry at 60°C to obtain iron and aluminum chlorophyll. The calculated yield was 89%.

Embodiment 3

[0031] Sodium iron chlorophyllin is dissolved in water and its solution pH is 8.1. Anhydrous aluminum trichloride is dissolved in a buffer solution with a pH of 7, and the pH of the solution is 6.2. Slowly add the aluminum salt solution to the ferric chlorophyllin sodium salt. Stir at a speed of about 1000r / min, and age for 9 hours at room temperature (17-25°C). Separate and dry at 50°C to obtain iron and aluminum chlorophyll. The calculated yield was 87%.

[0032] Chlorophyll iron and aluminum salt formation analysis:

[0033] 1. Judging from the changes in the experimental phenomena, after dissolving sodium iron chlorophyllin in water, the color of the solution is dark green, adding Al 3+ When the reagent turns into a salt, a black precipitate is produced immediately, indicating that a new substance is formed.

[0034] 2. Ultraviolet-visible (UV) absorption spectrum analysis

[0035] See attached figure 1 , 2 and the following table. From the analysis of the UV spect...