KR20040013633A - Extraction and Application of Antibacterial and Antifungal Agents for Textile - Google Patents

Abstract

PURPOSE: A preparation method of a natural antibacterial and antifungal composition for fiber is provided to supply the vegetable antibacterial and antifungal having the excellent stability and good antibacterial and antifungal activity effectively. CONSTITUTION: The preparation method of the natural antibacterial and antifungal composition for fiber comprises the steps of: mixing the epicarp of the ginkgo fruit and an extracting solvent(at least one solvent selected from the group consisting of water, methanol, ethanol, isopropanol, chloroform, ethyl acetate, acetone and acetonitrile) in a ratio of 1:1 to 1:200, extracting and filtrating to obtain a dark brown extract liquid; and mixing the extract liquid and an emulsifier to obtain a composition.

Description

Extraction and Application of Antibacterial and Antifungal Agents for Textiles

The antimicrobial treatment agents currently applied to fibers can be classified into chemical synthetic systems and natural products, and in most cases, chemical synthetic antimicrobial agents are used. However, despite the excellent antimicrobial activity, chemical synthetic antimicrobial agents have a lot of non-selective factors in the human body and the natural ecosystem, and thus are being restricted in practical use.

In other words, when cotton fibers treated with chemical synthetic antimicrobial agents are decomposed in nature, microorganisms capable of decomposing the fibers are not easily accessible, thereby exposing the environmental hazards of synthetic fibers as they are.

On the other hand, chitosan and the like are applied to the fiber as a natural antibacterial agent, but the cost burden is large, and there is a limitation that the Pad-Predry-Cure process should be applied in the application method. In addition, natural-based antimicrobial agents are weak in human toxicity, but relatively low antibacterial power and unstable to the external environment, most of them are very small amount of extraction is very limited in practical use.

There are few conventional techniques for processing agents for textiles based on ginkgo biloba, and there are few methods for manufacturing health clothing using natural herbal plants (Korean Patent Laid-Open Patent No. 2001-0109714) and in health using natural herbal plants. : 20-0195970) shows that when the extract made from ginkgo vaginally made from liquid natural dyes and applied to silk fiber, it is effective for diseases commonly mentioned in Chinese medicine such as hypertension, neuralgia, antioxidant, pulmonary tuberculosis, etc. .

These two patents have an essential difference from the present invention in that they are dye materials for natural dyeing. In addition, the antibacterial and antifungal agents extracted from the bark of the bark of the ginkgo biloba obtained in the present invention are used at the same time as before or after the dyeing of the synthetic dyes. Because it shows the effect in detail, there is an intrinsic difference in its application method and extraction method.

Given the growing realities of environmental and health concerns, the universalization of eco-friendly and human-friendly antimicrobial agents can eliminate the source of secondary infections caused by harmful microorganisms that are parasitic on fiber. It will gradually expand.

Under these circumstances, we attempted to extract natural antibacterial agents derived from oral ginkgo biloba, and various researches were conducted by the researchers. Antibacterial and antifungal effects were obtained.

Ginkgo biloba fruit is called Ginkgo Semen, and it is used as a medicine for Jinhae, sputum, asthma, oil well, and nourishment in oriental medicine. The separated components are ginkgoic acid and ginkgol Hydroginkgolic acid. Bilobol, ginnol ginkgetin asparagin, tannic acid, etc., and the effects identified in modern pharmacology have antibacterial and antifungal effects.

As described above, the present invention provides a method for efficiently supplying a plant antimicrobial agent having excellent safety and excellent antibacterial activity, and providing a technology for applying the same as an antibacterial and antifungal material for textiles. It has a main purpose.

In the present invention, the bark of the bark of the ginkgo biloba is extracted in a ratio of 1: 1-1: 200 to one or more solvents selected from an extraction solvent (water, methanol, ethanol, isopropanol, chloroform, ethyl acetate, acetone, acetonitrile, etc.). The mixture is extracted with filtration and filtered to obtain a dark brown extract, or a dark brown liquid component is obtained by applying pressure to the bark of the bark of the ginkgo biloba without extracting solvent and applying it as an antibacterial and antifungal material for textiles. It aims to do it.

The antibacterial (Antibacterial) and antibacterial (Antifungal) is a natural product, the safety is guaranteed, and even in the small amount of use, the antibacterial (Antibacterial) and antibacterial (Antifungal) effect on cotton fibers, and the application method for the fiber It is easy and has various features.

Hereinafter, an embodiment of the present invention. Although a test etc. are demonstrated in detail, this invention is not limited to these examples, Each Example, the test example, etc. were repeated and confirmed the reproducibility of the result.

Example 1

The bark of the bark of Ginkgo biloba is mixed with an extraction solvent (at least one solvent selected from water, methanol, ethanol, isopropanol, chloroform, ethyl acetate, acetone, acetonitrile, etc.) in a ratio of 1: 1-1: 200. After extraction and filtration, the filtrate was concentrated under reduced pressure to obtain a dark brown concentrate in a yield of 10 to 35% by weight.

Concentrate: 10 parts

Water: 40 to 200 parts

Emulsifier: 1-20 parts

The above composition was mixed and left standing for one day, filtered, and 5-20% by weight of the composition was obtained based on the concentrate.

Example 2

The bark of the bark of the ginkgo biloba was mixed with water at a ratio of 1: 1 in the extraction solvent and extracted at 40 ℃ ~ 70 ℃. The filtrate was filtered and left for 1 ~ 3 days. Obtain the extract. A composition was prepared in the same manner as in Example 1 such that the extract contained 5 to 20 wt%.

Example 3

The bark of the ginkgo biloba is mixed with water at a ratio of 1:50 in the extraction solvent and extracted at 40 ℃ ~ 70 ℃. After filtration, the filtrate is left for 1 ~ 3 days and refiltered to give a dark brown color. Obtain the extract. A composition was prepared in the same manner as in Example 1 such that the extract contained 5 to 20 wt%.

Example 4

The bark of the ginkgo biloba is mixed with water at a ratio of 1: 100 in the extraction solvent and extracted at 40 ℃ ~ 70 ℃. The filtrate is filtered and left for 1 ~ 3 days. Obtain the extract. A composition was prepared in the same manner as in Example 1 such that the extract contained 5 to 20 wt%.

Example 5

The bark of the ginkgo biloba is mixed with water at a ratio of 1: 200 in the extraction solvent and extracted at 40 ℃ ~ 70 ℃. After filtration, the filtrate is left for 1 ~ 3 days and refiltered to give a dark brown color. Obtain the extract. A composition was prepared in the same manner as in Example 1 such that the extract contained 5 to 20 wt%.

Example 6

The bark of the ginkgo biloba is mixed with water at a ratio of 1:30 in the extraction solvent, and extracted at 80 ° C to 100 ° C. After filtration, the filtrate is left for 1 to 3 days and refiltered to give dark brown Obtain the extract. A composition was prepared in the same manner as in Example 1 such that the extract contained 5 to 20 wt%.

Example 7

The bark of the bark of the ginkgo biloba is pressurized to obtain a dark brown liquid component, which is filtered through a cotton cloth to obtain a dark brown extract. A composition was prepared in the same manner as in Example 1 such that the extract contained 5 to 20 wt%.

[Test Example 1]

Refined Bleached Cotton Fiber

Forget-me-not: 20-70 g / l,

Reaction dyes (low temperature type, high temperature type): 0.001 to 10% by weight,

Soda ash: 5-50 g / l

Example 1-Compositions prepared in [Example 7]: 0.2 to 10% by weight relative to cotton fibers

The composition was placed in a dyeing vessel with a bath ratio of 1: 5 to 1: 100, heated for 20 to 40 minutes at 60 to 80 ° C, and washed with water and dried.

[Test Example 2]

After the same dyeing by the dyeing method of Test Example 1 without the addition of a processing agent, the fabric was immersed in a solution of 1 to 20 g / l of the composition prepared in [Example 1] to [Example 7] to be sufficiently wet. After 30 to 150% pick-up using mangles, the mixture was dried at 100 to 120 ° C. for 5 to 10 minutes, treated at 140 to 170 ° C. for 1 to 10 minutes, and then washed with water and dried.

[Test Example 3]

Examples 1 to 20 g / l of the composition prepared in Example 7 were heated to a bath ratio of 1: 10 to 1: 100 of water and held at 80 to 100 ° C. for 20 to 40 minutes, followed by water. Washed and dried.

The antimicrobial TEST of the fabrics treated in Test Example 1, Test Example 2 and Test Example 3 was performed by the KS K 0693-2001 method, and [Table 1] shows the test results.

[Table 1] Antibacterial by KS K 0693-2001

Processing agent concentration Bacteriostatic rate (%) Test Example 1 1% o.w.f. 99.9 5% o.w.f. 99.9 Test Example 2 1 g / L 99.9 5 g / L 99.9 Test Example 3 1% o.w.f. 99.8 5% o.w.f. 99.9

As described above, the present invention provides an antibacterial and antifungal agent as a natural product, and has an excellent antibacterial and antifungal effect on cotton fibers even when used in trace amounts. The application method is easy and has various characteristics.

Claims (4)

The bark of the bark of Ginkgo biloba is mixed with an extraction solvent (at least one solvent selected from water, methanol, ethanol, isopropanol, chloroform, ethyl acetate, acetone, acetonitrile, etc.) in a ratio of 1: 1-1: 200. Extraction and filtration to obtain dark brown extract. The process of applying dark brown liquid component by applying pressure to surgical bar like ginkgo biloba without extracting solvent. The process of obtaining the natural extract of dark brown by mixing the surgical bar like the fruit bar of Ginkgo biloba with the extraction solvent in the ratio of 1: 1 to 1: 1000 and extracting it at 10 ℃ -100 ℃. Obtaining a composition using the emulsifier from the components obtained in claim 1 and 3. Method of applying the extracted stock solution and composition as an antibacterial, antifungal, and deodorizing material for textiles.