JP2003000191A - Method for preventing photofading of monascus color - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a practical method for preventing photofading of monascus color, and to provide a method for dyeing food or the like with monascus color so as to prevent photofading of the monascus color. SOLUTION: This method for preventing photofading of monascus color involves dissolving the monascus color in a solution containing >=0.1 wt.% of tryptophan, histidine, thyrosine or methionine.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for preventing photobleaching of Beni kouji colorant, a method for dyeing foods, cosmetics, and pharmaceuticals using Beni kouji colorant having excellent fading effect, foods, cosmetics, pharmaceuticals dyed by the dyeing method, and The present invention relates to a Benikouji pigment / amino acid preparation.

[0002]

2. Description of the Related Art The safety of foods, pharmaceuticals, quasi-drugs, cosmetics, feeds, etc. is called for, and the use of carcinogenic and teratogenic synthetic colorants is prohibited one after another. A highly safe pigment produced is desired. Among them, the Benjiko pigment has attracted attention and is widely used.

[0003] However, it is known that the Benziojie dye fades and discolors when exposed to light such as fluorescent light and sunlight. Since discoloration or fading significantly reduces the commercial value, it is an important issue to prevent fading and discoloration.

As a method for preventing the photobleaching of the red beetle pigment, a method of storing the red beetle pigment in butanol or ethanol is known. However, the red beetle pigment is mostly used for products containing water, and this method is not practical.

Further, as other methods, there are a method of adding tea extract, coffee extract, bayberry extract, sesamol, vitamin C, etc., to a red beetle pigment, and a method of stabilizing by using chitosan. It's still not a satisfactory method.

[0006]

DISCLOSURE OF THE INVENTION The object of the present invention is to provide a method for practically preventing the photobleaching of Beni kouji pigments, a method for dyeing foods, cosmetics and pharmaceuticals with Benikoji pigments excellent in fading effect, and a method for dyeing the same. Food, cosmetics, pharmaceuticals,
Another object of the present invention is to provide a Benikouji pigment / amino acid preparation.

[0007]

Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that photobleaching of Beni maggot pigments is effectively achieved by dissolving Beni maggot pigments in a specific amino acid solution of a specific concentration. Find out what can be prevented,
The present invention has been reached.

[0008] That is, the first gist of the present invention is to prevent photobleaching of Beni kouji dye, which is characterized in that the Beni kouji dye is dissolved in a solution containing 0.1% by weight or more of tryptophan, histidine, tyrosine, or methionine. In the way.

The second gist of the present invention is to dissolve the red-winged beetle dye in a solution containing 0.1% by weight or more of tryptophan, histidine, tyrosine, or methionine,
A method for dyeing solid or semi-solid food, cosmetics, or pharmaceuticals using Beni maggot pigments, which comprises dyeing solid or semi-solid foods, cosmetics, or pharmaceuticals with this solution.

The third gist of the present invention resides in solid or semi-solid food, cosmetics or pharmaceuticals dyed by the above-mentioned dyeing method 2.

A fourth gist of the present invention is tryptophan,
The present invention relates to a liquid food, cosmetic, or drug containing histidine, tyrosine, or methionine in an amount of 0.1% by weight or more, and a liquid food, cosmetic, or drug prepared by dissolving a Benjioji pigment.

The fifth gist of the present invention is to add foods, cosmetics, or pharmaceuticals dyed with Benzioji pigment to tryptophan, histidine, tyrosine, or methionine.
A method of preventing discoloration of a foodstuff, cosmetics, or pharmaceutical product dyed with a Benziojie dye, which comprises applying a solution containing 1% by weight or more.

The sixth gist of the present invention resides in a Benzyza magenta dye / amino acid preparation obtained by dissolving a Benji maggot dye in a solution containing 0.1% by weight or more of tryptophan, histidine, tyrosine, or methionine.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The Benzioji pigments are produced from various microorganisms such as Monascus, and there are various culture media and culture methods, but the present invention can be applied to those produced by any method.

In the present invention, the photobleaching of the red beetle pigment is prevented by dissolving it in an amino acid solution of 0.1% by weight or more. The color value of the Benzioji pigment used in the present invention is usually E10% = 10 to 20.
0, preferably 10 to 100, more preferably 40 to 6
It is 0.

The amino acid used in the present invention is tryptophan, histidine, tyrosine, or methionine. These may be used alone or in combination of two or more.

The amino acid solution in which the red beige pigment is dissolved has an amino acid concentration of 0.1% by weight or more. Monascus dye, when contacted with 0.1 wt% or more amino acid solution, a complex of Monascus color and the amino acid is formed and is estimated to have light resistance. If the amino acid concentration is less than 0.1% by weight, the light resistance will be insufficient. The amino acid concentration in the amino acid solution is preferably 0.1% by weight.
The above content is more preferably 0.3% by weight or more. The higher the concentration of amino acid is, the more preferable it is, but it is usually 5% by weight or less, preferably 3% by weight or less.

The amino acid solution is usually an aqueous solution of amino acid, but depending on the object to be dyed with the Benzioji dye, alcohols such as methanol and ethanol, glycerol and the like, as well as these aqueous solvents can be used. When dyeing food, it is usually an amino acid aqueous solution.

In the amino acid solution in which the red beige pigment is dissolved, the weight ratio of the red beige pigment to the amino acid is usually, beige red pigment (E10% = 60): amino acid = 1: 0.0.
01 to 1: 1000, preferably 1: 0.01 to 1:
100.

According to this method, it is possible to sufficiently prevent fading due to light, as compared with the case where the red beige pigment is stored in the state of an aqueous solution.

The dyeing method using the photobleaching-preventing method of the present invention with a Benjiujie dye is as follows: The Benjiujie dye is dissolved in 0.1% by weight or more of the amino acid solution described above, and this solution is used for food, cosmetics or pharmaceuticals There is a method of dyeing. In order to dissolve the Benjioji pigment in the amino acid solution, it is usually stirred at room temperature. Then, a food or the like is dyed using this solution. As a dyeing method, for example,
When the object to be dyed is solid or semi-solid, the amino acid solution may be applied to the object to be dyed by brush coating, spray coating, dip coating, etc., but dip coating is preferable. Since the above-mentioned amino acid solution of Benjioji dye is excellent in photobleaching property, it becomes possible to prepare a large amount of coating solution in advance and use it for a long period of time, which is convenient in the dyeing process. The weight ratio of the Beni kouji dye and the amino acid in the coating solution is preferably Beni kouji dye (E10% =
60): Amino acid = 1: 0.05 to 1: 3, more preferably 1: 0.05 to 1: 2, particularly preferably 1: 0.0
It is 7-1: 1.

The above dyeing method can be used for various solid or semi-solid foods. For example, seafood products such as fish ham, fish sausage, kamaboko, chikuwa, meat products such as ham, bacon, beef jerky, rice cakes, rice crackers, rice cakes, sweets such as buns, candies, jelly, and pickled Fukugami. Pickles, jams, etc. In addition, the method can be used for various solid or semi-solid pharmaceuticals, quasi drugs, and cosmetics.
The food and the like dyed by the dyeing method of the present invention are prevented from fading or discoloring with respect to light. The object of this dyeing method is preferably a solid.

Further, as a method for preventing photobleaching of foods and the like dyed with Benji maggot dye by applying the method for preventing photobleaching of the present invention, 0.1% by weight of food, cosmetics or pharmaceuticals dyed with Benji maggot dye is used. A method of applying an amino acid solution of not less than 100% can be mentioned.

According to this method, the above food, cosmetics, pharmaceuticals, etc. dyed with Beni kouji dye are coated with 0.1% by weight or more of the amino acid solution described above to obtain Beni kouji dye on the surface of the food etc. It forms a complex of amino acids and exerts a photobleaching effect.

Furthermore, when dyeing liquid foods (beverages) such as wine, liqueurs, alcoholic drinks such as vodka, juices, soft drinks such as various carbonated drinks, etc. with Bencouji color, 0.1 amino acid is contained in the drink. When it is contained in an amount of not less than wt%, discoloration of the red beetle pigment is prevented. The same applies to liquid cosmetics and pharmaceuticals.

[0026]

EXAMPLES Examples will be described below, but the present invention is not limited to the following examples.

Example 1 A red beetle dye (E10% = 60) was diluted 200 times with a 1% by weight tryptophan aqueous solution, and 7 mL was added to a 10 mL glass sample bottle. This bottle was stored in a room where a fluorescent lamp was turned on for 6 days, and the non-irradiated product was used as a control to determine the residual rate of the red beetle dye by the following formula. The results are shown in Table 1.

[0028]

[Equation 1] Persistence rate of Benziojie dye (%) = (50 of irradiated product
Absorbance at 0 nm / Absorbance at 500 nm of unirradiated product) x 1
00

Examples 2 to 5 and Comparative Examples 1 to 3 The residual ratio was determined in the same manner as in Example 1 except that the amino acid aqueous solutions shown in Table 1 were used instead of the 1 wt% tryptophan aqueous solution. The results are shown in Table 1.

[0030]

[Table 1]

Example 6 Benidopsis dye (E10% = 60) was diluted 10-fold with a 1% tryptophan aqueous solution, and 1 mL was added to a 10 mL glass sample bottle. This bottle was stored for 7 days in a room in which a fluorescent lamp was turned on, and the residual rate of the red beetle dye was determined in the same manner as in Example 1 using the unirradiated product as a control. The results are shown in Table 2.

Example 7, Comparative Example 4 The residual ratio was determined in the same manner as in Example 6 except that the amino acid aqueous solution shown in Table 2 was used instead of the 1% tryptophan aqueous solution. The results are shown in Table 2.

[0033]

[Table 2]

Example 8 A solution was prepared by diluting Benidopsis dye (E10% = 60) 10 times with a 1% tryptophan aqueous solution, and the surimi of fish spread on a sheet was immersed in this solution for 10 minutes for dyeing. The stained surimi sheet was put in a petri dish and stored in a room where a fluorescent lamp was turned on for 3 days, and the degree of fading was observed. Although fading was observed, red color remained.

Comparative Example 9 The same procedure as in Example 8 was carried out except that the solution was diluted with distilled water instead of being diluted with the amino acid aqueous solution. The color faded violently and turned almost white.

[0036]

EFFECTS OF THE INVENTION According to the method of the present invention, it is possible to effectively prevent the photobleaching of the red beetle pigment. Also,
Since the photobleaching of Benzioji pigment is prevented by amino acids, it is highly safe for the human body.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4B018 LB08 MA05 MB04 MC04                 4C083 AA031 AA032 AC581 AC582                       CC01 DD23 DD27 EE03

Claims (6)

[Claims] 1. Bentokoji dye, tryptophan, histidine, tyrosine, or methionine 0.1% by weight
A method for preventing photobleaching of a red-winged magnolia dye, which comprises dissolving in a solution containing the above. 2. Bentokoji dye, tryptophan, histidine, tyrosine, or methionine 0.1 wt%
Dissolving in a solution containing the above, and dyeing solid or semi-solid food, cosmetics, or pharmaceuticals using this solution, a method for dyeing solid or semi-solid foods, cosmetics, or pharmaceuticals with Benikou dye . 3. A solid or semi-solid food, cosmetic or medicine dyed by the dyeing method according to claim 2. 4. A liquid food, cosmetic, or drug, which is obtained by dissolving Benkouji dye in a liquid food, cosmetic, or drug containing 0.1% by weight or more of tryptophan, histidine, tyrosine, or methionine. 5. A benichodhi dye, characterized in that a food, cosmetics, or pharmaceutical product dyed with a Benjioji dye is coated with a solution containing 0.1% by weight or more of tryptophan, histidine, tyrosine, or methionine. For preventing discoloration of colored foods, cosmetics, or pharmaceuticals. 6. A benuji magenta pigment, tryptophan, histidine, tyrosine, or methionine 0.1% by weight.
A Benikoji pigment / amino acid preparation dissolved in a solution containing the above.