KR101010135B1 - The manufacturing method of the natural dye which used persimmon juice, and the natural dye which used persimmon juice, and the method to dye of the natural dye which used persimmon juice - Google Patents

Abstract

PURPOSE: Natural dye using persimmon juice is provided to obtain soft fabrics with desired color through one time dyeing and to ensure excellent reproducibility. CONSTITUTION: A method for preparing natural dye using persimmon juice comprises: a persimmon juice preparation step; a fermentation step for forming tannin extract by accelerating fermentation while raising a temperature after protease and amylase enzymes are put into persimmon juice, and decomposing tannin included in persimmon juice; a stirring step for preparing a tannin composition by stirring the tannin extract and injecting alkali; and a pH adjustment step for controlling pH by adding acid to the tannin composition.

Description

The manufacturing method of the natural dye which used persimmon juice, and the natural dye which used persimmon juice, and the method to dye of the natural dye which used persimmon juice}

The present invention relates to a natural dye manufacturing method using the juice, more specifically, the juice is produced as a dye, it is possible to uniformly dye the stain, excellent color reproducibility (再現 性), one-time dyeing treatment Not only the dyeing process is completed, but also relates to a natural dye production method using the juice, so that the dye to be stained in a soft state.

Dyestuffs dyeing the skin in various shades and patterns are mainly chemicals, so they are the main culprit of environmental pollution, and when the fabrics dyed with the dyeing materials are cut with clothing, they cause skin diseases. There was a problem that is harmful to the human body.

In order to solve this problem, it is natural dyes that are in the spotlight in recent years. The natural salts are traditionally used materials, and some are newly discovered from organic materials.

Among them, the salt material using the juice has been used traditionally, it is dyed by conventional methods without the development of technology. The reason why the juice is used early as a natural salt is because it is a material commonly available in the surroundings, and contains a lot of tannin.

Although recently discovered scientifically, tannin is a salt material, has been proved to have high fastness to daylight, washing, and friction, and is known to have excellent protein removal ability and UV protection ability as a natural paint.

The dyeing method using the persimmon containing a lot of tannin components are as follows.

First, persimmon is extracted to extract the juice. Then, after diluting the juice in water, the salts are immersed in the diluted water of the juice, and then dried in the sun. However, since the color is light in one immersion and drying step, the process is repeated many times until the desired color is obtained.

At this time, the tannins contained in the juice are changed to brown by sunlight and oxygen to color the chlorine.

According to the background art, there are the following problems.

Tannins contained in the juice are condensed tannins of polymer tannins and have a property of being coagulated by oxidation with sunlight and oxygen. Therefore, there is a problem in that the stiff texture is given while being bonded to the fiber of the blood.

In addition, since the color gradually became black due to the irradiation amount of oxygen and sunlight, it was difficult to express a constant color. That is, since the color changes according to the time and the amount of sunlight exposed to the atmosphere, not only the color is different each time you work, but also there is a problem that a problem occurs, it is impossible to produce a large amount of uniformly dyed fabric paper without the same color and stain There was a problem.

The reason for this is because tannins in the juice are condensed tannins with a complex structure containing polyphenols, which are solidified by discoloration by sunlight and oxygen. In other words, the tannins are crosslinked between the molecular chains of the fibers during dyeing to form a complex, resulting in stiffness of the fibers, resulting in poor touch and staining. These facts are already known in the academic world and the art, and detailed descriptions are omitted.

Therefore, when the complex structure of the tannins is broken, the problem can be solved. For this purpose, a method of inducing fermentation by storing the juice for a long time is used, but at this time, the persimmon decays, generates odor and uniformly fermented juice. The problems still exist since they cannot be obtained.

In addition, since the color is adjusted by exposure to sunlight and oxygen, the immersion and drying processes need to be repeated a plurality of times, resulting in a long time-consuming problem of low productivity.

In addition, there was a problem that the juice can not be used as a dye for printing with viscosity.

According to the present invention, a method for preparing a natural natural dye is provided with a juice preparation step comprising a juice, and a protease and amylase enzyme are added to the juice to increase the temperature, and vigorously promote fermentation to decompose tannins contained in the juice. A fermentation step in which the tannin extract is formed, a stirring step of heating and stirring the tannin extract to make a stable tannin composition, and a pH to adjust pH by adding an acid to the tannin composition formed by the stirring step. The adjustment step is made.

In addition, the protease, amylase in the fermentation step is 0.5 to 7 parts by weight, based on 100 parts by weight of the juice , the temperature is 45 ℃ to 90 ℃ so that the fermentation is activated.

In addition, in the stirring step, the juice containing the solid content is put into a stirrer rotating at 20 rpm and stirred, and the alkali is added 0.5 to 7 parts by weight of alkali based on 100 parts by weight of the solid content.

Juicy natural dye according to the present invention is prepared by the above production method.

The dyeing method using a natural natural dye according to the present invention is a fabric pretreatment step of removing impurities on the fibers of the fabric and refining with a medium temperature enzyme, and dilutes the juice of claim 4 with water after the fabric pretreatment step. After immersing in one saline solution, the dyeing step of dyeing while raising the temperature, the washing step of washing the fabric after the dyeing step with water, the tenter treatment to remove the wrinkles by mounting the fabric subjected to the washing step to the tenter Steps are taken.

According to the present invention, since it is a natural dye of deep color that can be used as a general dye through the juice, it is possible to obtain a textile paper of a desired color by one dyeing like a general dye, and can be dyed evenly without staining, so it is excellent in reproducibility. In addition, since the immersion and drying do not have to be repeated as in the prior art, a rapid dyeing operation is possible, resulting in excellent production efficiency. In addition, when manufacturing with a dye for printing, there is an effect that can be sufficiently used as a dye for printing. Therefore, there is an effect suitable for mass production as a natural dye.

According to the present invention for solving the above problems, a method of producing a natural natural dye and a natural natural dye and a dyeing method using a natural natural dye are as follows.

As discussed in the above problem, in order to solve the problems of tannin contained in the juice is possible by storing the juice for a long time fermentation. This technique has already been used since ancient times in Jeju and Gyeongbuk province, and its effect is known early. However, even when the juice is stored and fermented, decay was caused, and odor was generated, and the fermented juice could not be uniformly obtained. Thus, it was not possible to obtain a sensitizing dye which was still stiff, stained and reproducible.

In the present invention, by treating the juice with an enzyme to break the complex chemical structure of condensed tannins, to prevent the function as a crosslinking material between the molecular chains of the fiber, and to be pre-darkened by one time dyeing or as a general chemical dye It is characterized in that the product is completed by printing.

To this end, in the present invention, a natural dye production method using the juice is made as follows.

A juice preparation step comprising the juice is made, put the protease, amylase enzyme in the juice obtained in the juice preparation step to increase the temperature and vigorously promote fermentation to decompose tannins contained in the juice tannin extract containing solid content This is a fermentation step is formed, the stirring is heated to stir the tannin extract while stirring to make a stable tannin composition, the pH is adjusted by adding an acid to the tannin composition formed by the stirring step The adjustment stage is made. The reason for adding alkali in the stirring step is to neutralize and stabilize the acid formed by the fermentation step, and to stop crosslinking by breaking the polymer linkage of tannin.

As an example, the juice preparation step is provided with a young foot containing the highest amount of tannin, sterilized by putting citric acid in an aqueous solution, and then crushed and juiced by a compress. The juice is then prepared by filtration through a 90 mesh screen. The juice preparation step of the present invention is not limited to the above method, any method can be used to juice the juice. It is also possible to use commercially available juices.

Protease and amylase in the fermentation step, for example, with respect to 100 parts by weight of the juice , 0.5 to 7 parts by weight , the temperature is preferably 45 ℃ to 90 ℃ so that the fermentation is activated. After the fermentation step, the juice is 10.0 parts by weight of solids based on 100 parts by weight of the juice by fermentation. In the stirring step, the juice containing the solid content is put into a stirrer rotating at 20 rpm, and the alkali is added to 0.5 to 7 parts by weight of alkali based on 100 parts by weight of the solid content.

Therefore, in the present invention, by artificially evenly fermenting the juice without decay, it can prevent the crosslinking function of tannins to prevent the stiffness of the chlorine stiffness, because the color is dark in the stirring step, dyeing by one dye The process can be completed.

The scientific basis of the present invention is as follows.

Currently, a method of refining textiles using enzymes is used for alkali fibers or acidic fibers. For example, among proteases used for enzyme refining protein fibers, enzymes that decompose proteins and sericin in a short time when the temperature and ph are correct Among the amylases, there are enzymes that withstand high temperatures (90 ° C. or more) and hydrolyze in a short time. Therefore, the tannin component of the persimmon having a complex molecular structure is also of course stable decomposition by the enzyme if the conditions of ph, temperature is met. Therefore, it is possible to prevent the crosslinking function of tannins and to prevent the fabric from becoming stiff.

In addition, in the case of the tannin, when the heat is applied, the hydroxyl group of flavon-3,4diol, which is a condensation type basic structure, changes to keto form by high temperature treatment, and the color changes to reddish brown or blackish brown, and the color tone becomes dark. It can be manufactured in deep color without drying.

Looking at a specific embodiment to enable the present invention as follows.

(Embodiment 1)

A fermentation step consisting of 100 parts by weight of the juice is made, fermentation of the protease 2 parts by weight of the juice, amylase 3.5 parts by weight of the juice into the juice and the enzymatic reaction takes place for 12 hours at a temperature of 40 ~ 60 ℃ Steps are taken. Then, the sodium hydroxide solution (300g / 600ml) and boric acid solution (32g / 100ml) is put into the juice through the fermentation step, and the stirring step of raising the temperature to 98 ℃ while rotating at 20rpm with a stirrer is made. The sodium hydroxide solution and the borax solution are aqueous solutions, and the denominator in parentheses indicates the amount of water. In addition, the injection amount is 0.5-7 weight part with respect to 100 weight part of said solid content. In addition, the mixing ratio of the sodium hydroxide solution and the boring solution can be arbitrarily determined, and the mixing weight of the two may be 0.5 to 7 parts by weight.
At this time, the color is gradually changed from burlap to ocher, bovine hair, and blackish brown, and then tangled in bovine hair for a while and then becomes thin and viscous. After the stirring step, allowed to cool to lower to 50 ℃, put 4 parts by weight of citric acid per juice , and consists of a pH adjusting step to adjust the pH to 7.

Protease (protease) is an example of Novozymes Inc. Alkalase, Esperase International Inc. Purfect 4000G, E one selected from 2 parts by weight compared to the juice. In addition, the amylase is a natural dye using the juice by adding 3.5 parts by weight of one selected from the group of Basillus alpha-amylase (seq-id NO; 1 to 3) juice.

According to the natural dye prepared according to the present invention, since it is a natural dye of deep color that can be used as a general dye through the juice, it is possible to obtain a textile paper of the desired color by one dyeing as a general dye, since it can be dyed evenly without stains Excellent reproducibility In addition, since the immersion and drying do not have to be repeated as in the prior art, a rapid dyeing operation is possible, resulting in excellent production efficiency. In addition, when manufacturing with a dye for printing, there is an advantage that can be sufficiently used as a dye for printing. Therefore, there is a characteristic suitable for mass production as a natural dye.

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In the present invention, of course, the natural sucrose dyes produced by the above-mentioned manufacturing method also belong to the rights of the present invention.

Next, look at the dyeing method using a natural dye of the present invention.

The fabric pretreatment step is performed by removing impurities on the fabric of the fabric and refining it with a medium temperature enzyme. Then, the fabric after the fabric pretreatment step is immersed in a salt solution diluted in water to the juice by the manufacturing method, the dyeing step of dyeing while raising the temperature is made. Then, a washing step is performed to wash the fabric that has undergone the dyeing step with water, and a tenter treatment step of removing the wrinkles is performed by mounting the fabric that has undergone the washing step in the tenter.

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In the fabric pretreatment step, 2-6% OWF (on the weight of fiber), the liquid ratio of 20 to 50 times. In addition, in the dyeing step, the juice of the manufacturing method is mixed at a liquid ratio of 20 to 50 times and dyed for 20 to 60 minutes while raising the temperature to 25 to 95 ℃.

The washing step is preferably repeated washing with about five times.

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Claims (5)

Juicy nine stages with a juice,
A fermentation step in which a protease and amylase enzyme are added to the juice, the temperature is increased, and the fermentation is promoted to decompose tannins contained in the juice to form tannin extract containing solids;
Stirring and heating the tannin extract while stirring to make a tannin composition;
Juicy natural dye production method characterized in that the pH adjustment step of adjusting the pH by adding an acid to the tannin composition formed by the stirring step. The method of claim 1,
Protease, amylase in the fermentation step is 0.5 to 7 parts by weight with respect to 100 parts by weight of the juice, the temperature of the succulent natural dye production method, characterized in that the temperature is set to 45 ℃ to 90 ℃. The method according to claim 1 or 2,
In the stirring step, the juice containing the solid content is put into a stirrer to rotate at 20rpm and stirred, wherein the alkali is a method of producing a natural natural dye, characterized in that 0.5 to 7 parts by weight of the alkali is added to 100 parts by weight of the solid content. Juicy natural dye, characterized in that prepared by claim 1 or 2. A fabric pretreatment step of removing impurities on the fabric of the fabric and refining it with a medium temperature enzyme;
A dyeing step of immersing the fabric, which has undergone the fabric pretreatment step, in a saline solution of diluting the juice of claim 4 in water, and then raising the temperature to increase the temperature;
Washing treatment step of washing the fabric after the dyeing step with water,
Dyeing method using a natural succulent dye, characterized in that the tenter treatment step of removing the wrinkles by mounting the fabric subjected to the water washing step in the tenter