JP2631768B2 - How to prevent safflower yellow pigment from settling - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing safflower yellow pigment from settling over a long period of time even when blended in a beverage or the like, and more particularly, to extracting safflower with water. The present invention relates to a method for preventing precipitation of safflower yellow pigment, which comprises subjecting the aqueous yellow pigment solution obtained as described above to contact treatment with a cation exchange resin.

[0002]

2. Description of the Related Art A method for extracting yellow pigment from a safflower is conventionally known. For example, a safflower is extracted with water, the resulting water extract is evaporated to dryness in vacuo, and the residue is dissolved in a small amount of water. Further, this is added with an organic solvent immiscible with water to precipitate calsamine yellow (JP-B-53-39).
No. 447) or an extract obtained by extracting safflower with water, adding a solvent selected from propylene glycol, glycerin or sorbitol, dehydrating, and then mixing the obtained solvent solution with the solvent. A method for extracting a safrole yellow pigment by adding an organic solvent that does not dissolve the safrole yellow pigment to precipitate the safrole yellow pigment (Japanese Patent Publication No. 53-39447), a water-soluble yellow pigment liquid obtained from safflower petals Is activated carbon adsorption treatment to adsorb only the yellow pigment, and the adsorbed yellow pigment is eluted with a basic solvent.
No. 3136), a water-soluble yellow pigment liquid obtained from safflower petals is treated with a water-soluble organic solvent, and the solution is treated with activated carbon to adsorb only the yellow pigment, and the adsorbed yellow pigment is removed. Separation method of yellowish pigment of safflower petal eluted with basic solvent (Japanese Patent Application Laid-Open No. 54-123137), and 20 to 40% of cyclodextrin as a powder stabilizer in safflower yellow liquid extracted from safflower with water A method for producing a safflower yellow powder pigment which is added, mixed, dissolved and dried with a spray drier or a vacuum freeze dryer (JP-A-60-1)
No. 56761) and the like.

[0003]

However, the extract containing yellow pigment obtained by extracting the safflower with water as described above or its concentrated solution, as described above, precipitates over time,
When this was added to beverages and the like, it caused cloudiness and precipitation of the final product. In addition, it is often observed that the same turbidity or sedimentation occurs over time when added to beverages, etc., even in the yellow matter-containing substance obtained by treating the water extract of safflower with an organic solvent or activated carbon. This is a serious problem in using the dye.

The present inventors have sought to determine the cause of turbidity or sedimentation caused by such safflower yellow pigment. As a result, it has been found that alkaline earth metals such as calcium and magnesium contained in the safflower water extract cause turbidity or precipitation. It is presumed that these alkaline earth metals combine with acidic polysaccharides, proteins, peptides, etc., which are extracted together with the yellow pigment when the safflower is extracted with water to form insoluble substances, which may cause turbidity or precipitation. Was.

[0005] It is difficult to completely remove acidic polysaccharides and peptides from a safflower water extract by a known method, for example, by treating the extract with a water-soluble organic solvent or activated carbon. It is presumed to cause turbidity or precipitation. In addition, even if acidic polysaccharides and peptides are removed by these treatments, alkaline earth metal ions are not removed. Therefore, when safflower yellow matter obtained by the above treatment is incorporated into a beverage, for example, a fruit juice beverage, It is presumed that organic acids, amino acids and the like are present in the beverage, so that an insoluble substance is formed with the alkaline earth metal, which causes turbidity or precipitation.

[0006]

Means for Solving the Problems The present inventors treat the alkaline earth metal, which is the cause of turbidity or precipitation caused by safflower yellow element extract, with a conventionally known ion-exchange resin to obtain the above-mentioned substance. The inventors have found that these problems can be solved at once, and have completed the present invention. Accordingly, an object of the present invention is to provide a safflower yellow element extract which does not produce turbidity or precipitate over time by an easy means of removing alkaline earth metals by ion exchange resin treatment.

[0007] The extraction of safflower and yellow pigment in the present invention can be performed by a conventionally known method. As an example, about 5 to 20 parts by weight of soft water, preferably about 10 to about 15 parts by weight, is added to 1 part by weight of dried safflower petals, and
The extraction is carried out at about 90 ° C, preferably about 30 to about 80 ° C, for about 10 minutes to about 5 hours, preferably for about 1 to about 3 hours, under standing or stirring conditions. After completion of the extraction, a safflower yellow extract can be obtained by solid-liquid separation by a conventional method such as pressing or centrifugation. Then, the extract is heat-sterilized, then diatomaceous earth,
Filtration using powdered cellulose or the like, and treatment of the filtrate with a cation exchange resin can provide the safflower yellow extract of the present invention.

As such cation exchange resins, for example, Diaion SK-, PK-, HPK-, RCP
-Each series (Mitsubishi Chemical); Amberlite IR12
0, IR200 (Rohm &Has); Dowex 50-series, HCR-W, MSC-I (Dow
Chemical); Levatit S100, SP10
0, SP112-118 (Bayer) and the like. Cation exchange resin treatment can be performed in a batch system, but generally, continuous treatment is performed using a resin-filled column. The treatment can be carried out by passing the safflower yellow extract through a column filled with a cation exchange resin by a conventional method, for example, at an SV of about 0.5 to about 3.

The safflower yellow element extract from which the cations have been removed by the method of the present invention has no risk of turbidity or sedimentation during storage by itself, and is also extremely stable when added to beverages and the like. is there. The extract can be used as it is as a yellow pigment, but generally, the extract is concentrated about 5 to about 50 times to obtain a concentrated liquid (Brix
About 15 to about 75 °). Alternatively, if desired, dextrin, cyclodextrin or any other carrier may be blended with the extract and powdered by a known drying means such as spray drying and used.

(Embodiments) Embodiments of the present invention will be described more specifically with reference to the following embodiments.

Example 1 3000 g of soft water was added to 300 g of dried safflower petals,
The mixture was stirred and extracted at 70 ° C. for 1 hour. After the completion of the extraction, the mixture was centrifuged to perform solid-liquid separation. The obtained extract was sterilized by heating at about 85 ° C. for 15 minutes, and then clarified by filtration through diatomaceous earth-coated filter paper. Next, this filtrate is subjected to cation exchange resin SK.
1B (Na ⁺ ) (Mitsubishi Kasei) 200ml filled 3
The solution was passed through a 0 mm glass column at an SV of about 2 to perform an ion exchange treatment. The obtained treatment liquid was concentrated under reduced pressure, and Brix6
190 g of a 5 ° safflower yellow concentrate was obtained (Product 1 of the present invention). 1 g of this concentrated solution was added to a buffer solution of pH 4.0 for 2 hours.
000 ml, 400 nm wavelength using a 1 cm cell
The value obtained by measuring the absorbance at was 0.925. The amount of Ca measured by the atomic absorption method was 10%
4 mg in 0 g and 5 mg in Mg.

Comparative Example 1 An extract of safflower petals was prepared in the same manner as in Example 1, and immediately concentrated under reduced pressure without using a cation exchange resin to obtain Br.
ix65 ° safflower yellow pigment concentrate 190 g was obtained (comparative product 1). The absorbance of this concentrated solution measured in the same manner as in Example 1 was 0.925, 331 mg of Ca / 100 g of concentrated solution, Mg1
It was 80 mg / concentrated solution 100 g.

Reference Example 1 A syrup containing 10% by weight of granulated sugar and 0.3% by weight of citric acid was prepared, and 0.1% by weight of the safflower yellow element obtained in Example 1 and Comparative Example 1 respectively. % Of the beverage was prepared and stored at room temperature for 10 days.
Precipitation occurred in the sample to which the product of the present invention was added, but no change was observed in the sample to which the product 1 of the present invention was added.

[0014]

According to the present invention, the stability over time of the dye can be extremely advantageously industrially provided by a simple means of treating a safflower yellow extract with a known cation exchange resin. That is, turbidity or sedimentation during storage of the safflower yellow extract extract concentrate or the food or drink to which the pigment is added can be almost completely prevented. Accordingly, the safflower yellow pigment according to the present invention can be suitably blended with beverages such as transparent juice beverages, transparent fruitless beverages, sports drinks, medicinal drinks, tea beverages, milk beverages, and the like. By blending in ice cream, sherbet, Japanese / Western confectionery and other foods and beverages, it is possible to completely prevent troubles such as turbidity, color bleeding and spots.

Claims (1)

(57) [Claims] 1. A method for preventing precipitation of safflower yellow pigment, comprising subjecting an aqueous solution of yellow pigment obtained by extracting safflower with water to a cation exchange resin.