KR101181507B1 - Natural Dye Composition Using Hinoki Leaves and Bamboo Leaves and Use Thereof for Improving Atopic Dermatitis - Google Patents

Abstract

The present invention discloses a natural dye composition having high fastness and high atopic dermatitis improving activity by using cypress leaves and bamboo leaves.

Description

Natural Dye Composition Using Hinoki Leaves and Bamboo Leaves and Use Thereof for Improving Atopic Dermatitis}

The present invention relates to natural dye compositions using cypress leaves and bamboo leaves and their use for improving atopic dermatitis.

In general, natural dyeing refers to the process of coloring a fabric using vegetable, animal or mineral dyes. This natural dyeing is characterized by less color saturation, more environmentally friendly, and more human-friendly than the chemical dyes.

Natural dyeing has the advantages of being natural in color, excellent in aesthetics, and having an affinity for the environment without causing problems such as wastewater, odors, etc. that occur when using synthetic dyes, compared to dyeing using synthetic dyes.

Materials used for natural dyeing include volcanic stone pine (Korean Patent No. 548019), Sasu Lepi Arthropod (Korean Patent No. 773969), Beer Sludge (Korean Patent No. 404912), and Paulownia Bark (Korean Patent No. 502566). , Grape skins (Korean Patent No. 512384), maroon skins (Korean Patent No. 512383), and the like.

However, natural dyeing generally has a problem that stains or discoloration tend to occur because the fastness to daylight (sunlight), laundry, sweat, and dry cleaning is not high.

The present invention discloses a natural dye composition having excellent color fastness using cypress leaves and bamboo leaves, and an anti-atopic dermatitis improving use of the composition.

It is an object of the present invention to provide a natural dye composition using cypress leaves and bamboo leaves and an anti-atopic dermatitis improving use of the composition.

For this purpose, the present inventors, as confirmed in the following Examples and Experimental Examples, after mixing each of the cypress leaves and bamboo leaves with water, pulverizing and aging filtration to produce a natural dye, the natural dye is fixed When the natural dye composition mixed at a ratio is prepared and the cotton fabric and nylon are dyed with the natural dye composition, the cotton fabric is more dyed compared with the case where the natural dye composition of the cypress leaves is dyed or the natural dye composition of the bamboo leaves is dyed. It was confirmed that the overall fastness of the nylon and nylon.

In addition, it was confirmed that the atopic dermatitis was remarkably improved as compared to the group wearing the general underwear when the inner fabric is made of cotton dyed with the mixed natural dye composition and worn by a boy suffering from atopic dermatitis.

The present invention is provided on the basis of these experimental results, in one aspect the present invention is obtained by the natural dye using the cypress leaves obtained by the production method of (I) below and the production method of (II) below It relates to a natural dye composition comprising a natural dye using bamboo leaves.

(I) a method for producing a natural dye using a cypress leaf obtained by mixing water with a fine cypress leaf, pulverizing the mixture and filtering the ground product; And

(II) A method for producing a natural dye using bamboo leaves obtained by mixing water with fine bamboo leaves, pulverizing the mixture and filtering the pulverized product.

In the production method of (I) and (II), the aging step may be included after the grinding. The ripening step can be achieved by leaving the ground product (a mixture of crushed cypress leaves / bamboo leaves and water) at room temperature. This aging step is achieved by degrading the fibers of the crushed cypress leaves / bamboo leaves by natural fermentation. The purpose is to increase the degree of coloring of the fibers and consequently to increase the fastness. This aging step will usually be performed for about 3 to 15 days, preferably in the case of 7 to 8 days as in the following examples.

In the production methods of (I) and (II), when the aging step is included, it is preferable that a second milling step is included after the aging step. The double grinding step is for grinding the bamboo leaves uniformly and finely, suitable for dyeing.

In the second milling step, it is preferable that the alcohol is added to improve the fastness. The alcohol may be an alcohol having 1 to 5 carbon atoms. However, it is preferable to use ethanol in consideration of the toxicity to the human body. The amount of alcohol such as ethanol may be in the range of 0.5 ml to 1.5 ml per g of cypress leaf / bamboo leaf. If the addition amount of alcohol is less than the upper limit, it is impossible to improve the fastness of the intended purpose, and up to the upper limit, the fastness is increased in proportion to the amount of alcohol added, but if it is higher, the fastness is proportional to it even if the addition amount is higher. It does not increase.

Whether or not including the secondary grinding step, the grinding is preferably performed so that the average particle size of the pulverized bamboo leaves is 100 µm or less, and the grinding is preferably made to be in a gel state. By doing so, the coloring degree and color fastness to a fiber can be improved.

In the production methods of (I) and (II), after the pulverizing step, it is preferable to filter the pulverized product to take only the filtrate. At this time, the filtration is preferably a filtration means (fiber bag, etc.) having a pore diameter of 0.5 mm or less. The reason for taking only the filtrate is to make the composition of the dye uniform and to increase the degree of coloring and the fastness.

In the production method of (I) and (II), after the grinding step, it is preferable to add salt (NaCl) in a range of 0.001 to 2% by weight based on the weight of the pulverized product, and to mix uniformly. Experience has shown that when salt is added, the degree of coloring and color fastness are improved.

In the natural dye composition of the present invention, the natural dye using the cypress leaves and the natural dye using the bamboo leaves are preferably mixed in a weight ratio of 3: 7 to 4: 6.

As shown in the experimental example below, when the natural dye using the cypress leaves and the natural dye using the bamboo leaves are mixed, the light fastness, the sweat fastness and the wash fastness are improved as a whole, regardless of the mixing ratio. When the mixing ratio was 3: 7 to 4: 6 (weight ratio of natural dye using cypress leaves: natural dye using bamboo leaves), light fastness, sweat fastness and washing fastness were remarkably high.

The natural dye composition of this invention can be grasped | ascertained as a natural dye composition for atopic dermatitis improvement in a specific aspect.

The following example is to dye the cotton with a natural dye composition of a natural dye of cypress leaves and a natural dye of bamboo leaves in a weight ratio of 3: 7 or 4: 6, and to prepare the inside of the dyed cotton atopy It is significantly higher in atopic dermatitis improving activity than boys wearing normal underwear when worn on 4-5 boys suffering from dermatitis, and is dyed using only natural dyes of cypress leaves or natural dyes of bamboo leaves. It was much higher than when wearing the underwear made of.

Considering these experimental results, the natural dye composition of the present invention can be understood as a natural dye for improving atopic dermatitis.

The natural dye compositions of the present invention may be formulated in the form of powders, granules, particles or solutions and, if necessary, solubilizers, dispersants, pH adjusters, wetting agents, penetrants, leveling agents, mildewing agents, chelating agents, fixatives, colorants, color fasteners And dyeing aids such as mordants.

The various dyeing aids can be used in the art, including those available in the market, and their amount can be exerted as long as they do not inhibit the fastness and atopic dermatitis improving activity of the natural dye composition of the present invention. May be added in any amount present.

Fibers that can be dyed with the natural dye composition of the present invention include natural fibers such as cotton, hemp, wool, silk, acetate, triacetate, nylon, polyvinyl alcohol (PVA), polyester, polyacryl, polyamide, Artificial fibers such as polyurethane and polyacrylonitrile and blended fibers thereof are included, and the base material to be dyed may be in the form of fibers (thread form) itself or fabric (including blend).

In the method of dyeing natural fibers or artificial fibers with the natural dye composition of the present invention, any method known in the art may be applied.

The dyeing method is divided into the dyeing method and the printing method according to the whole or part of the dyeing, and according to the continuity of the dyeing process, batch dyeing (jig dyeing, winch dyeing, jet dyeing, beam dyeing) and continuous dyeing (padding) Steam dyeing and thermosol dyeing) are classified into direct salt method, mordant salt method, reducing salt method, and disperse salt method depending on whether the dye is water-soluble or affinity with the fiber.

When dyeing the fibers with the natural dye composition of the present invention all the above methods can be applied, in the dyeing method according to whether the dye is water-soluble or affinity with the fiber in consideration of the natural dye composition of the present invention as a whole water-soluble Direct salt method would be preferred.

In the dyeing method of fibers using the natural dye composition of the present invention, if necessary, a pretreatment step may include a refining step for removing impurities of the fiber or a bleaching step for removing unnecessary pigments. In addition, the post-treatment process may include a colorant treatment step, a color fastness enhancer treatment step, a post-mordant treatment step and the like as necessary.

Fibers dyed with the natural dye composition of the present invention is a garment product such as shirts, underwear, socks, panties, stockings, diapers, bedding products such as duvets, blankets, pillows, medical products such as patches, bandages, sofas, It can be manufactured and used as furniture products, such as a chair covering paper.

As described above, according to the present invention, it is possible to provide a natural dye composition having excellent fastnesses using cypress leaves and bamboo leaves. Since the natural dye composition also has anti-atopic dermatitis improving activity, products such as garments dyed with the natural dye composition are also useful for improving atopic dermatitis.

Hereinafter, the present invention will be described with reference to Examples and Experimental Examples. However, the scope of the present invention is not limited by these examples and experimental examples.

< Example > Preparation of Natural Dyes Using Cypress Leaves and Bamboo Leaves

Example 1 Preparation of Natural Dyes Using Cypress Leaves

200 g of cypress leaves shredded at 1 to 2 cm were immersed in 6 L of water for about 15 days, and then rinsed with clean water. Then, 3 g of water was added to 200 g of the washed cypress leaves, and pulverized first.

The pulverized product (that is, a mixture of pulverized cypress leaves and water) was left to stand at room temperature for about 7 days to mature, and then pulverized secondly.

At this time, the grinding is to the stage to reach the gel (Gel) state.

The pulverized product obtained by pulverizing in this manner was filtered through a 0.5 mm (diameter) fine mesh or fiber bag to remove debris, and 6 g of salt (NaCl) was added to the filtrate to mix to prepare a dye solution.

Example 2 Preparation of Natural Dye Using Bamboo Leaves

A natural dye using bamboo leaves was prepared under the same process and process conditions as in Example 1, but bamboo leaves were used instead of cypress leaves as a material of the natural dyes.

Specifically, 200 g of bamboo leaves shredded at 1 to 2 cm were immersed in 6 L of water for about 15 days, and then rinsed with clean water. Then, 3 g of water was added to 200 g of the rinsed bamboo leaves, and the resulting pulverized product (ie, The mixture of pulverized bamboo leaves and water) was left to mature at room temperature for about 7 days, and then aged. At this time, pulverization was carried out to reach the gel state, and the pulverized product obtained by the second crushing was filtered through 0.5 mm (diameter) fine mesh or fiber bag to remove debris, and the salt in the filtrate 6 g of (NaCl) was added thereto and mixed to prepare a dye solution.

< Manufacturing example > Preparation of Natural Dye Compositions

A dye composition was prepared by mixing a natural dye using a cypress leaf obtained in <Example 1> and a natural dye using a bamboo leaf at a weight ratio of the following [Table 1].

Preparation of Natural Dye Compositions division Mixing ratio of natural dyes using cypress leaves and natural dyes using bamboo leaves
(Natural Dyes Using Cypress Leaves: Natural Dyes Using Bamboo Leaves) Production Example 1  1: 9 Production Example 2  2: 8 Production Example 3  3: 7 Production Example 4  4: 6 Production Example 5  5: 5 Production Example 6  6: 4 Preparation Example 7  7: 3 Production Example 8  8: 2 Production Example 9  9: 1

< Experimental Example > dyeing Fastness  And anti-atopic dermatitis activity experiment

Experimental Example 1 Dyeing Fastness Measurement Experiment

In order to measure the dyeing fastness, the dyeing time is 50 minutes while heating the natural dye composition of each manufacturing example to immerse the cotton fabric or nylon to be dyed at 60 ° C. or higher in the dye, and then keep heating at 90 ° C. The cotton fabric or nylon was dyed with the dyes of the respective preparations. The dyed cotton or nylon was diluted with 6 g of water (Na ₂ SnO ₃ ˜3H ₂ O) 2g in diluent for 30 minutes, and then embedded and washed, dehydrated with water and dried in the shade.

In general, the greater the amount of dye using cypress leaves, the darker the green color. The higher the amount of dye using bamboo leaves, the lighter green color.

The fabric thus obtained was cut into a sample size of 24 mm × 34 mm to measure daylight fastness, sweat fastness and washing fastness.

Daylight fastness test was evaluated according to AATCC 16E-1998 method, sweat fastness according to KS K ISO 105 E04: 2005 method, and wash fastness to KS K ISO 105 C06: 2006.

The fabric of the comparative example was used to dye and post-mold the natural dye using the cypress leaves of each of the above examples and the natural dye using the bamboo leaves (dyeing with the dye using the cypress leaves "Comparative Example 1 "and dyeing with dye using bamboo leaves is" Comparative Example 2 ").

The results are shown in Tables 2 and 3 below, divided into cotton and nylon.

Daylight fastness, sweat fastness and laundry fastness of cotton division  Daylight fastness  Sweat fastness  Color fastness Production Example 1  2 ~ 3  2 ~ 3  2 ~ 3 Production Example 2  3  2 ~ 3  4 Production Example 3  5  4 ~ 5  5 Production Example 4  5  5  4 ~ 5 Production Example 5  3  3 to 4  3 to 4 Production Example 6  3  3  3 Preparation Example 7  3  3  2 ~ 3 Production Example 8  2 ~ 3  3  2 ~ 3 Production Example 9  2 ~ 3  2 ~ 3  2 ~ 3 Comparative Example 1  1-2  1-2  1-2 Comparative Example 2  1-2  One  2

Daylight fastness, sweat fastness and laundry fastness of nylon division  Daylight fastness  Sweat fastness  Color fastness Production Example 1  2 ~ 3  2 ~ 3  2 ~ 3 Production Example 2  3  3  4 Production Example 3  4 ~ 5  4 ~ 5  5 Production Example 4  3 to 4  4 ~ 5  4 ~ 5 Production Example 5  3  3  3 Production Example 6  3  3  3 Preparation Example 7  3  2 ~ 3  2 ~ 3 Production Example 8  3  2 ~ 3  2 ~ 3 Production Example 9  2 ~ 3  2 ~ 3  2 ~ 3 Comparative Example 1  2  1-2  2 Comparative Example 2  2  One  1-2

The results of Tables 2 and 3 show that the fastness of the dye composition of the natural dye using the cypress leaves and the natural dye using the bamboo leaves varies depending on the mixing ratio. By the way, the overall fastness is increased when the natural dye of the cypress leaves and the natural dye of the bamboo leaves are mixed, especially in the case of the mixing weight ratio of 3: 7 (Manufacture Example 3) to 4: 6 (Manufacturing Example 4) The most fastness was excellent.

Experimental Example 2 Anti-Atopic Activity Experiment

The inner surface was prepared using the dyed cotton of <Experimental Example 1> and the anti-atopic activity was confirmed through four weeks of wearing experiments with four boys aged 4-5 years old as a group.

The experimental group was subjected to the same clothing habits and drug administration as usual for 24 hours wearing the dyed cotton for 4 weeks, and the same clothing habits and drug administration were performed for the control group. The degree of alleviation of atopic dermatitis was evaluated by SCORAD (Scoring Atopic Dermatitis).

The results are shown in Table 4 below as average values.

division At the start of the experiment  At the end of the experiment Production Example 3  64.56  42.83 Production Example 4  63.27  46.92 Comparative Example 1  65.92  59.47 Comparative Example 2  69.24  63.52 Control group (wear group in general)  63.27  59.31

The results in [Table 4] show the atopic dermatitis improving activity also in the case of dyeing of the cypress leaf dye and bamboo leaf dye (Comparative Examples 1 and 2).

Especially in the case of dyeing with mixed dyes of cypress leaves and dyes of bamboo leaves (Manufacturing Examples 1 and 9), the atopic dermatitis-improving activity in each cotton dyed with dyes of cypress leaves and bamboo leaves It is much higher than

Claims (6)

The natural dye composition containing the natural dye using the cypress leaf obtained by the manufacturing method of (I) below, and the natural dye using the bamboo leaf obtained by the manufacturing method of (II) below.
(I) a method for producing a natural dye using a cypress leaf obtained by mixing water with a fine cypress leaf, pulverizing the mixture and filtering the ground product; And
(II) A method for producing a natural dye using cypress leaves obtained by mixing water with fine bamboo leaves, pulverizing the mixture and filtering the pulverized product.
The method of claim 1,
The manufacturing method of (I) and (II) further comprises a step of aging after the milling, the step of maturing is a natural dye composition, characterized in that is carried out at room temperature 7-8 days.
The method of claim 2,
After the aging step, a natural dye composition comprising a second grinding step is further included.
The method of claim 1,
Filtration in the manufacturing method of said (I) and (II) is a natural dye composition characterized by using the filtration means whose diameter of a pore is 0.5 mm or less.
The method of claim 1,
The natural dye composition is a natural dye composition, characterized in that the natural dye using the cypress leaves and the natural dye using the bamboo leaves in a weight ratio of 3: 7 to 4: 6.
The method according to any one of claims 1 to 5,
The natural dye composition is a natural dye composition, characterized in that for improving atopic dermatitis.