KR20140130301A - Natural deys producing having catechol tannin - Google Patents

Abstract

The present invention relates to a method for manufacturing a natural dye containing condensed tannin, which obtains a natural dye containing condensed tannin by a condensed tannin obtaining process, a condensed tannin stabilizing process, a natural dye obtaining process, a natural dye composition obtaining process, and a natural dye composition pulverizing process. The condensed tannin used in a natural dye is easily dissolved in water by lowering of the treatment temperature of extraction and concentration by vacuum, and the dye easily dyes cosmetic pigments or natural fiber, thereby being safe to a human body, and having excellent quality, has natural pigments containing various components beneficial to a human body, and is extracted from medicinal herbs or medicinal plants and becomes a natural pigment to have an effect of providing a dye which is friendly to a human body by an antioxidant active material, ultraviolet shielding effect, anti-infectious effect, anti-obesity, deodorization, and allergy prevention effect.

Description

TECHNICAL FIELD [0001] The present invention relates to a natural dye containing a condensed tannin,

The present invention relates to a process for preparing natural dyes containing condensed tannins, and more particularly to a novel process for producing natural dyes capable of dyeing fabrics or dyeing hair using natural tannins .

Natural dyeing uses grasses, trees, fruits, flowers, etc. which can be obtained from nature. Using these raw materials, it is possible to obtain natural dyestuffs in a liquid state by using a hot water or alkali extraction method, A natural dye is obtained in one state, and the natural dye thus obtained is used to dye a fabric to be dyed in the required color.

Although the materials for obtaining natural dyes for natural dyeing as described above are various, the most widely used tannin is tannin, and the constituent components of such tannin are separated into a crystalline state as a single substance, but most of them are mixed with several kinds of substances It is a substance with white or pale brown properties and is present in all plants.

Hydrolyzable tannin which is hydrolyzed to produce gallic acid or eragic acid and condensed tannin which produces a red or brown precipitate, provabepen, by polymerization, and the other is a method by alkaline melting A pyrogallol system that mainly produces pyrogallol, a catechol system that mainly produces catechol, and a method of dividing it into an intermediate system. However, it is easily called plant tannin, and is distinguished from hydrolyzed tannin and condensed tannin by characteristic of tannin.

The catechol system contains many tannins such as mangrove, oak (bark), mimosa (wattle), keppaco, and gambia. Especially, the tannins from the immature tannin and the tea leaves from the tea tree are very useful .

The solubility tannin molecule structure of immature senses (astringent sensation) is usually in the form of Gallic Acid combined with glucose, which is condensed with a phenolic compound of flavonoid by the action of acetaldehyde, It is a structure that becomes the insoluble tannin of the polymer, and the insoluble phenomenon of the tannin is that the tannin between the intercellular spaces of the senses becomes black,

Conventionally, methods for making natural dyes using tannin components contained in persimmon have been provided.

A fermentation step of adding a protease and an amylase enzyme to the juice and increasing the temperature to accelerate fermentation to decompose the tannin contained in the juice to form a tannin extract containing the solid content; And the pH of the tannin composition is adjusted by adding an acid to the tannin composition formed by the stirring step to prepare a juice natural dye.

Patent application No. 10 - 2010 - 0082538 Patent No. 10 - 1138747 - 0000 Patent No. 10 - 0623992 - 0000

Condensed tannins are tannins that are not decomposed by acids or enzymes. They are mainly derived from Persimmon Juice and tea leaves. They are detoxified (detoxified alkaloids), sterilized (protein coagulation of single cells), anti-inflammatory, Is a polymer tannin with an effect of.

Tannin of immature persimmon is a polycondensable macromolecule compound (molecular weight 13,000), which has a property of being blackened by air, heat or light. It is a compound that binds strongly to other polymers. In the case of juice containing water, , Oxidation is promoted by air or light.

It is composed of sugar, mannit, tectin, triterpenoid, tannin and others. It is decomposed into alcohol-aldehyde-acetaldehyde-acetic acid by natural fermentation of juice and smells strong organic acid. Because of the production of propionic acid.

The tannin extract in this state is unstable and unstable and gels, so it is very difficult to be industrially used. When it is polymerized, it is not decomposed by strong alkali or enzymes. When it is exposed to air or light, it becomes dark brown There is a lot of difficulty in the process. Tannins in the extracted state before the tannins of immature feeling polymerize to light, air, and temperature and become insoluble tannins are very useful value, but they are easily altered and their use value as tannin is low.

Accordingly, the present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a process for producing a condensed tannin, a process for stabilizing a condensed tannin, a process for obtaining a natural dye, a process for obtaining a composition for a natural dye, Obtaining a natural dye containing the condensed tannin by a pulverizing process of the composition;

Condensed tannins used for natural dyes are extracted and concentrated at a lower temperature by vacuum, easily soluble in water, easy to dye in cosmetics and natural fibers, and provide safe and high-quality dyes The natural pigment contains various ingredients beneficial to the human body. It is extracted from herbal medicines and medicinal plants and is digested by the natural color. Therefore, it is possible to use the antioxidant active substance, ultraviolet ray blocking effect, anti-inflammatory efficacy, anti-obesity, deodorant, It is possible to achieve the object of providing a dye which is friendly to the dye.

The present invention is based on the finding that natural dyes made of condensed tannins are easily dissolved in water at room temperature because the temperature of extraction and concentration is low due to the vacuum and the dye is easily soluble in cosmetics or natural fibers, It is effective in production.

In addition, it contains various components beneficial to the human body. It is extracted from Chinese medicine or medicinal plant and it is digested by the natural color. Therefore, it is suitable for human body such as antioxidant active substance, ultraviolet ray blocking effect, anti-inflammatory effect, anti-obesity, deodorant, Troubles such as skin can be prevented.

In addition, when dyeing is performed on fabric or hair, the effect of surface blocking of natural dyes is excellent, and there is little fear of dropout or discoloration of dye, so dyeing performance can be improved and dyeing quality can be improved.

Hereinafter, a method for producing natural dyes containing the preferred condensed tannins of the present invention will be described.

The process of obtaining condensed tannins;

In order to solve the unique characteristics of juice, it is necessary to crush the immature sensation, to juice it with a compactor, and to optimize the extraction capacity of tannins present between the cell gaps, β - glucosidase - Amylase or protease was used as a coenzyme in 0.02 to 5% by weight of the juice volume, and PH was added at a temperature of 3 to 5 at a temperature of 40 to 70 ° C to 30 When it is decomposed for ~ 240 minutes, the cell wall and the whole cell division are decomposed, the extraction efficiency of tannin can be enhanced, and the starch can be saccharified, and the juice can be made stable in physical properties.

In other words, the β - glucosidase enzyme hydrolyzes the glycoside bond formed between the reducing hydroxyl group of the sugar and the tannin extraction yield is increased. In addition, the various compounds contained therein are saccharified for a short time, It is possible to prevent condensation easily.

The juice of this state is filtered with a glass filter and a membrane filter, and concentrated concentrated tannin having a solid content of 5 to 50% by weight is concentrated in vacuo to produce a condensed tannin which is used as a basic additive.

The condensed tannin is similar to the above-mentioned method in which green tea extract extracted from green tea leaves is used to obtain contraction tannins. Since the leaves of green tea are mostly used for drinking, the leaves of July to August are rich in catechin, It is preferable to form it by the above-mentioned method.

As described above, the condensed tannin obtained from persimmon or green tea may be used in a state in which the condensed condensed tannin extracted from persimmon or a green tea condensed tannin extracted from green tea are used independently or in combination with each other.

Stabilization process of condensed tannin;

The condensed tannin obtained as described above is oxidized by oxygen and light in the air and promoted and stabilized by the temperature. Usually, such a time is called a color development process of tannin, which takes about 15 days in the natural state, It is very slowly thawed, and this can be an advantage to compensate for the shortcomings of easily discolored hair dye.

The process of obtaining natural pigments;

The common natural coloring matter easily dissolves in water even if it is mordant. The condensed type tannin of persimmon and green tea strongly holds other mixed natural coloring matter, so that it is possible to prevent easily decolorization.

The natural colorant added to the condensed tannin is selected from the group consisting of Glucosidase, Amylase, Protease, Polygalacturonase, 0.02 to 2 Weight% is hydrolyzed at a temperature of 3 to 5, 40 to 70 ° C for 30 to 240 minutes, and then vacuum-extracted at a low temperature to obtain a concentrated natural low-molecular-weight liquid.

In addition, it is possible to add an enzyme dispersant, silicon-based edible defoamer, Oxybenzon, Benzoates, antioxidant (grapefruit extract, tea extract), plant-based wax or oil, silk extract (sericin), silk amino acid, guar gum, maltose, 0.01 to 5% by weight of at least one additive selected from the group consisting of chitin, glucosamine, galactosamine, agar gum, sodium alginate, astaxanthin, chitin, casein, gelatin, keratin, dextrin, agar, And agitated at a speed of 5000 rpm for 20 to 60 minutes to obtain a natural pigment.

The natural pigments to be mixed with the condensed tannin are as follows.

Scarlet series;

Safflower, danshang, jojoba, brazilian wood, madder, madder, anthocyanin pigment.

Animal red scar pigment;

Coach Neal, Rack.

Purple series;

Grasshopper, Logwood, Shiatsu, Elderberry, Grape Peel.

Blue series;

Indigo Ferra, Daechung, Yoido, and others.

Yellow series;

Gardenia, Euphorbia, Ewinghwari, Flowerbone, Pomegranate, Neck, Onion, Golden, Yellow, Rhubarb, Hoop Scalp, Cryopathic, Yellow, Yellow.

Brown series;

Acacia, mulberry, birch, foliage, peach tree, plum blossom, oak, bamboo, cloves, marigold.

Black series;

Rhubarb, begonia, logwood, horsetail, pomegranate, duck, and god tree. Evening can be used.

A process for obtaining a composition for a natural dye;

0.01 to 10% by weight is added to the natural colorant obtained by selecting one of fatty acid ester, glycerin fatty acid ester, propylene fatty acid glycol ester emulsifier and oleic acid to the natural colorant, and 0.5 to 95% by weight of condensed tannin Followed by dispersion and stirring to obtain a composition for a natural dye.

A powdering process of a composition for natural dyes;

Powdering of a natural dye composition containing a condensed tannin and a natural dye is determined depending on the kind of the salt, and thus the salt which is difficult to be pulverized may be powdered singly or in combination in the above additives .

The salt materials composed of a lot of tannin-rich salt, roots and wood are mainly mixed with sodium alginate, guar gum and agar, and the compositions for natural dyes are spray-dried, vacuum-dried, ) To dry one.

When the spray dryer is used, the diskette rotating speed is 9.000 ~ 13,000 RPM, and the stable temperature of the inlet temperature is 150 ~ 220 ℃ and the outlet temperature is 80 ~ 100 ℃. The sensitizing dye is prepared by the above-mentioned mixture with a freezing dryer (Freezing Dryer), dried and pulverized to powder, and the bamboo, dwarf, oak, and oak with a large amount of tannin are dried in a vacuum drier at a temperature of 50 to 70 ° C The mixture is vacuum dried, crushed and powdered.

The natural dyes produced by the techniques of the present invention as described above may be used in the same manner as natural dyes for natural dyes of general fabrics or may be dyed in the same manner as the general methods for dyeing hair, Or hair dyeing is well known in the art, so that the effects or advantages of using natural dyes produced by the technique of the present invention will be described below.

Incidentally, the natural dyes containing the condensed tannins of the present invention can be sufficiently dyed without a mordanting agent. However, when a mordant is selectively required, a natural dye such as iron, zinc, nickel, aluminum, stones, calcium, metals such as potassium, Water-soluble metal salts including elements and natural metal compounds including natural-based iron, aluminum, stones and rare metals may be used.

The natural dyes containing the condensed tannins produced by the technique of the present invention have improved color fastness due to the polycondensation of condensed tannins in daylight, washing and friction fastness, and are excellent in fastness to silk, wool, If the condensed tannin encounters proteins that are keratin, the hair becomes polymerized and has a strong binding force.

For this reason, the effect of surface blocking after the natural dye is excellently exerted on the expanded fiber or hair, and the risk of discoloration and decolorization is reduced, and hair dyeing is performed with natural dyes containing condensed tannins as a main component It has the advantage of being oxidized in the natural light wavelength band and becoming darker and darker, so that it has the advantage of being in contact with oxygen in the air contrary to easily discolored after hair dyeing.

Acetaldehyde, a natural polymeric binder, is strong enough to bind to proteins and is destroyed when heated to a temperature of 210 to 215 ° C, and has a low solubility. Silk, wool, cotton, hemp, hemp, And the dyeing of the dye is also promoted in the regenerated fiber and semi-synthetic fiber, and the fastness can be improved.

Natural pigments contain a lot of functional materials, and they are more safe and environmentally friendly than synthetic pigments for hair health due to many beneficial substances such as antibacterial, anti-inflammatory, anti-bacterial and antibacterial. Also, they can solve problems such as allergy. .

Claims (4)

In order to optimize the extraction capacity of the tannins present between the cell spaces, the amylase or the potase is mixed with the β-glucoside and the coenzyme among the enzymes acting on the glycosyl compound Extracting the liquid tannin and concentrating it in vacuo to obtain a condensed tannin;
Oxidizing the condensed tannin by oxygen and light in air to stabilize it;
Amounts of glucoside, amylase, fortease, and polygalacturonase are mixed with the volume of the salt-containing plant, and the mixture is vacuum-extracted at a low temperature to obtain a concentrated,
Adding one or more selected from fatty acid ester, glycerin fatty acid ester, propylene fatty acid glycol ester emulsifier and oleic acid to a natural colorant, mixing and dispersing the condensation type tannin to obtain a composition for natural dyes;
Characterized in that the composition for natural dyes is obtained by selecting one of the components in a spray dryer, a vacuum dryer and a freeze dryer, followed by drying and pulverization, thereby obtaining a natural dye containing the condensed tannin. The method of claim 1, further comprising:
In the process of obtaining the condensed tannin, the enzyme and the coenzyme are 0.02 to 5% by weight of the juice volume of the immature or green tea leaf, and the decomposition is carried out at a temperature of PH 3 to 5 and 40 to 70 ° C for 30 to 240 minutes ≪ / RTI > wherein the condensation-type tannin is a natural dye. The method of claim 1, further comprising:
In the process of obtaining the natural pigment, the enzyme is hydrolyzed at 0.02 to 2% by weight with respect to the volume of the pigment plant containing the pigment, at a pH of 3 to 5 at a temperature of 40 to 70 ° C for 30 to 240 minutes;
In the hydrolyzed state, the enzyme dispersant, silicon-based edible defoamer, Oxybenzon, Benzoates, antioxidant (grapefruit extract, tea extract), plant-based wax or oil, silk extract (sericin), silk amino acid, guar gum, 0.01 to 5% by weight of at least one additive selected from maltose, chitosan, chitin, glucosamine, galactosamine, agar gum, sodium alginate, egg white, chitin, casein, gelatin, keratin, dextrin and agar , And stirring the mixture at a speed of 2500 to 5000 rpm for 20 to 60 minutes. The method of claim 1, further comprising:
The content of one of fatty acid ester, glycerin fatty acid ester, propylene fatty acid glycol ester emulsifier and oleic acid is 0.01 to 10% by weight based on the natural coloring matter;
Wherein the condensation type tannin to the natural coloring matter is mixed in an amount of 0.5 to 95% by weight.