KR20070109278A - Antioxidant fermenting microorganism agent reducing unpleasant smell and volatile organic compounds from leathers leathers containing the same and manufacturing method thereof - Google Patents

Abstract

An antioxidant fermenting microorganism agent, leather containing the same, and a method for manufacturing the leather are provided to deodorize the leather, by using the antioxidant fermenting microorganism agent in a dyeing process of the leather. An antioxidant fermenting microorganism agent comprises microorganism mixture of 3-7 wt%, water of 50-150 wt%, organic carbon sources of 3-7 wt%, natural salts of 0.5-1.5 wt%. The microorganism mixture is prepared by mixing photosynthetic bacteria, yeasts, actinomyces, lactobacilli at the ratio of 50-150:0.5-1.5:0.5-1.5:3-7. Leather is manufacture by a preparing process, a tanning process, a dyeing process, and a finishing process. In the dyeing process, the antioxidant fermenting microorganism agent of 0.05-0.15 wt% is added into chemicals of 100 wt%.

Description

ANTIOXIDANT FERMENTING MICROORGANISM AGENT REDUCING UNPLEASANT SMELL AND VOLATILE ORGANIC COMPOUNDS FROM LEATHERS, LEATHERS CONTAINING THE SAMETH MANUFACTURING

1 is a graph of GC MASS of a general leather that does not contain an antioxidant fermentation microbial agent.

Figure 2 is a GC MASS graph of the leather containing the antioxidant fermentation microbial agent.

The present invention relates to an antioxidant fermentation microbial agent that reduces the unpleasant odor and volatile organic compounds generated from processed leather, leather comprising the same and a method for producing the same.

Since ancient times, leather and fur have been used mainly to make clothing and to make household containers. Even now, leather is useful in clothing, and with the development of leather processing methods, it has been developed into various products useful not only for clothing but also for living.

Leather processing requires a variety of processes, in particular, in order to improve the physical and chemical properties of leather, the addition of a variety of organic and inorganic compounds, physical processing and the like at the same time. As a result, various volatile organic compounds are detected in many leather products, and these volatile organic compounds cause chronic damage to the human body.

Although there are various regulations around the world regarding the harmfulness of many volatile organic compounds that cause sick house syndrome, new car syndrome, etc., alternative methods for the specific symptoms caused by volatile organic compounds and the method of reducing volatile organic compounds are insufficient.

Recently, photocatalysts, nano silver, and various chemicals are used to reduce odors and volatile organic compounds that occur in leather products. However, these products do not have a certain expected effect compared to expensive treatment costs. It's not perfect in its way.

Accordingly, an object of the present invention is to provide an antioxidant fermentation microbial agent, leather containing the same and a method for producing the same that can reduce the smell and volatile organic compounds generated from leather at a fundamental and low cost.

In addition, the present invention provides an automobile seat, an automotive interior material, a leather part, and the like in which such leather is used.

The present invention is a photosynthetic bacteria: yeast: actinomycetes: lactic acid bacteria 50 ~ 150: 0.5 ~ 1.5: 0.5 ~ 1.5: 3 ~ 7 microbial mixture and water, organic carbon source and natural salt contained in the ratio of 3-7: 50 ~ It is included in the weight ratio of 150: 3-7: 0.5-1.5 to provide an antioxidant fermentation microbial agent that reduces the volatile organic compounds generated from leather.

The present invention also provides a leather containing the antioxidant fermenting microbial agent and a method for producing such leather.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated concretely.

The antioxidant fermentation microorganism used in the present invention is an organic carbon source and a natural salt as a raw material coexisting coexistence that can produce antioxidants such as inositol, ubiquinone, polyphenols, etc. through fermentation process. Means a combination of effective microbial populations.

The antioxidant fermentation microbial agent of the present invention is an environmentally friendly biological material used for fermentation of conventional foods as an antioxidant fermentation microbial agent including various microbial species (Species) based on photosynthetic bacteria, yeast, actinomycetes, and lactic acid bacteria. The antioxidant fermenting microorganism agent of the present invention can be added to the leather manufacturing process to suppress the remaining of various chemicals, and to reduce the generation of volatile organic compounds, etc. generated in the finished leather through the action of decomposing the remaining chemicals. .

Antioxidant fermentation microbial agent of the present invention can reduce volatile organic compounds, including microbial mixture containing photosynthetic bacteria, yeast, actinomycetes and lactic acid bacteria in the ratio of 50 to 150: 0.5 to 1.5: 0.5 to 1.5: 3 to 7 Has the effect. It is preferable when the mixing ratio of the photosynthetic bacteria: yeast: actinomycetes: lactic acid bacteria is 100: 1: 1: 5.

Photosynthetic bacteria included in the antioxidant fermentation microbial agent of the present invention as Rhodopseudomonas ( Rhodopseudomonas palustris ), and as the yeast Saccharomyces cerevisiae ), and actinomycetes include Streptomyces albus ), Lactobacillus plantarum ( Lactobacillus) plantarum ).

Antioxidant fermentation microorganism of the present invention is mixed with the above bacteria as a parent and added water, organic carbon source and natural salt in a fermentation broth in a weight ratio of 50 ~ 150: 3 ~ 7: 0.5 ~ 1.5 and then at 7 ℃ 20 It may be prepared by complete fermentation in anaerobic state for 10 days. Preferably, the fermentation broth comprises water, an organic carbon source, and a natural salt in a 100: 5: 1 weight ratio.

The organic carbon source is a conventional carbon nutrient, and preferably molasses. As the natural salt, an unsealed deep sea natural salt is preferably used.

The natural salt used in the present invention is a fermented natural salt not contaminated with the microbial agent of the present invention for 7 days.

The present invention also provides a leather comprising the antioxidant fermentation microbial agent and a method for producing such leather.

As used herein, the term “leather” is a generic term that includes not only tanned skins but also skins. Commonly used 'leather' refers to the skin (skin) peeled from the animal, and the product that removes the hair from the leather and tans (generally called tanning by processing the leather) is called 'skin'. Products with different properties can be obtained depending on the type of raw skin, tanning and finishing. In the tanning process step, a chemical is added, and when using the processed leather, various chemicals generated from the leather are harmful to the human body. Carbon disulfide (CS2), for example, is a volatile organic compound that occurs in processed leather. It is also called emulsified carbon and is a volatile liquid that is colorless or pale yellow, has a strong unpleasant odor, and has a boiling point of 46 ° C. Inhalation of carbon disulfide vapors, liquid carbon disulphide in contact with the skin or mucous membranes for a long time, or drinking it mainly causes nervous system disorders.

Accordingly, the present invention is added to the specific step of the leather manufacturing process by adding an antioxidant fermentation microorganisms including a variety of microbial species (Species) based on photosynthetic bacteria, yeast, actinomycetes, lactic acid bacteria, etc. Suppresses the residue of chemicals used in processing. In addition, the agent of the present invention protects the human body from volatile organic compounds by reducing odors and volatile organic compounds generated from processed leather and leather-based interior materials and sheet finished products by decomposing or removing unreacted residual chemicals.

Hereinafter, the manufacturing method of the leather containing the antioxidant fermentation microbial agent will be described in detail.

General leather manufacturing process is divided into preparation process, tanning process, dyeing process and finishing process as follows, and is divided into the following steps in detail. Each detailed step and its purpose are as follows. The processing conditions of each substep are well known in the art to which the present invention belongs, and some steps may be reversed, omitted, or may be performed together with other steps as necessary.

1) Preparation process

A) SOAKING: The main purpose of water droplets is to restore the original hides from the hides by removing the salt and attached dirt used for preservation. At this time, the moisture content of the hide is returned to about 64% from 35% to 45%.

B) FLESHING: Removes unnecessary greases such as fat, meat, and connective tissue from the leather side.

C) Limeing: The raw material is deposited in a saturated solution of lime to facilitate hair loss, and at the same time, it relaxes and swells the tissues with alkali, and removes unnecessary protein such as hairs and epithelial layers of the raw material. give.

D) RINSING: Rinsing is the process of cleansing for the next process.

E) SPLITTING: The process of first determining the thickness according to the type and grade of raw skin and adjusting it.

F) RIMIMING: This process is to make the next process smoother by completely removing the hairs and dirts of raw hides through the lime work once again and making the leather softer.

2) Tanning process

A) DELIMING: Neutralizes alkalis, removes spherical proteins, increases the leather's flexibility and facilitates the next process.

B) HEATING (BATING): The process of removing unclean protein and multiplying the silver surface, while at the same time gaining a lot of reviews.

C) Pickling: It aims to make the tanning smooth by acidifying the felt to prevent the growth of bacteria before tanning for the permanence of leather. Until pickling is finished, it is not called leather, but felt.

D) TANNING: The process of converting proteins into non-corrosive substances. Tanning with chrome, aluminum, vegetable oil, mimosa, etc., makes it into leather.

E) SAMMMING: This is a process to precisely control the thickness during shaving by removing moisture from the leather which has been aged after tanning. Squeeze out and adjust the moisture content to 30-45%.

F) SHAVING or GRADING: This is the process of accurately recalibrating the first adjusted thickness at the split stage.

G) Neutralization: The process of adjusting the pH for dyeing and eggplanting (oil feeding).

H) RETANNING: Tanned leather can be commercialized by the following operations, but the non-uniform tanning effect caused by shaving after chrome tanning will result in spotting (uneven dyeing due to the rejection of dye). This is an additional tanning process that compensates for the quality of each part and adds its properties according to the intended use of the product, and obtains softness and beautiful leather, that is, high quality leather.

3) Dyeing Process

A) DYEING: Dyeing of leather is a process of producing a variety of colors by uniformly coloring leather by physically manipulating it with leather with water-soluble dyes in a container that can maintain the same temperature. .

B) FAT LIQUORING; Drying the dyed leather is too hard and unsuitable for use, so the oil is filled between the fibers to reduce friction and act as a lubricant. In addition, it is a process of working to preserve the flexibility, increase the yield, obtain abundant leather, and protect the leather (waterproofing).

4) Finishing process

A) Drying: A process that circulates air repeatedly to evaporate the moisture contained in the leather fibers. It can be divided into natural drying and artificial drying, and the moisture content after drying is about 8-14%.

B) CONDITIONING; After drying, the fiber structure of the leather shrinks and penetrates moisture in the hardened state to reduce friction during milling, and it is a preparatory process for obtaining flexibility by making the fibers of the leather intact without breaking pores. The moisture content after eggplant is approximately 18-22%.

C) Milling: It is a preparation process that relaxes the fiber structure hardened by the evaporation of moisture, gains the softness of the leather and opens the closed pores to facilitate the chemical treatment and the next process.

D) TOGGLING: The process of smoothing and smoothing the surface of the leather to increase product yield and prevent it from expanding when leather products are made.

E) SPRRAYING: The process of applying dyes, pigments, and light medicine.

F) PRESS & EMBOSSING: It improves the physical properties and makes the surface smooth and smooth.

G) MEASURING: The process of making a quantity.

The manufacturing method of the leather according to the present invention, in the manufacturing process of the general leather including the preparation process, tanning process, dyeing process and completion process, based on the amount of chemicals added during the dyeing process of 0.05% to 0.15% by weight of antioxidant It is a method of manufacturing by adding a fermentation microorganism agent. If the content of the antioxidant fermentation microbial agent is less than 0.05% by weight based on the amount of the added drug, the effect is reduced and there is a problem, if it exceeds 0.15% by weight there is a problem that another smell by the fermentation of the microbial agent itself.

Generally, dyes added during the dyeing process include acid dyes, basic dyes, metal dyes, etc. In this process, acid dyes may be used. In addition, the branching agent is a sulfur oxide-based, sulfite-based, phosphate-based, synthetic system and the like, can be used in various combinations thereof.

In addition, the manufacturing method of the leather according to the present invention is a method for manufacturing by adding an antioxidant fermentation microbial agent of 0.03% by weight to 0.07% by weight based on the amount of leather coating agent added during the coating process of the completion process. If the content of the antioxidant fermentation microbial agent is less than 0.03% by weight based on the amount of the leather coating agent is added, there is a problem that the odor removal effect is lowered, if more than 0.07% by weight of the microbial agent itself fermentation has another odor. As the leather coating agent, an acrylic base and a polyurethane base are used, and preferably a water-soluble type is used.

In addition, the manufacturing method of the leather according to the present invention is 0.05 wt% to 0.15 wt% based on the amount of chemicals added in the dyeing process, 0.03 wt. % To 0.07% by weight of the antioxidant fermentation microbial agent is added to prepare.

The present invention also provides a leather produced by the above production method.

In addition, the leather of the present invention can be made of automobile seats, automotive interior materials, leather parts and the like. On the other hand, the antioxidant fermentation microbial agent of the present invention is applied through a method that is evenly sprayed on the entire surface, such as car seats, automobile interior materials, leather accessories made of leather processed in a general manner and placed at room temperature for 24 hours, the smell of processed leather And volatile organic compounds can be decomposed and removed.

As described above, the present invention is produced by adding an antioxidant fermentation microorganism agent during the manufacturing process of the leather or sprayed on the leather has the following effects.

Instead of reducing the smell and volatile organic compounds of the leather by the methods used in the past, the antioxidant fermentation microorganisms are put into the leather processing process or by spraying the antioxidant fermentation microorganisms on the processed leather, so that the human body such as odor and volatile organic compounds It can eliminate the harmful root cause. In addition, the antioxidant fermentation microbial agent acts in the wastewater generated in the leather processing process to increase the treatment efficiency of the wastewater through the biodegradation of various compounds contained in the wastewater. In addition, the present invention minimizes changes in the leather's natural properties to use biological materials to remove the odor of the leather. In addition, it is possible to reduce symptoms such as sick house syndrome, new car syndrome, etc. occurring in the place using the leather seat made of leather according to the present invention.

In addition, antioxidant fermentation microorganisms have antibacterial effects such as benzoic acid and antioxidants such as inositol, ubiquinone, and polyphenols in order for the anaerobic microorganisms to withstand free radicals through the fermentation process. Make a secondary product, a substance. By decomposing or removing odor causing substances, volatile organic compounds, etc., they can reduce odors, volatile organic compounds, etc., generated in the interior materials of automobiles and seats, and the environment.

Hereinafter, the present invention will be described in detail through embodiments of the present invention. However, embodiments of the present invention may be modified in various forms, the scope of the present invention should not be construed in a way that is limited by the embodiments described below. Embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

Example 1 Antioxidant Fermentation Microorganisms

Photosynthetic bacteria, Rhodopseudomonas palustris ), a bacterium Saccharomyces cerevisiae ), the actinomycetes Streptomyces albus ) and Lactobacillus plantarum , Lactobacillus plantarum , were mixed at a ratio of 100: 1: 1: 5. The microbial mixture, water, organic carbon source and natural salt were mixed at a ratio of 5: 100: 5: 1, and then fermented completely in an anaerobic state at 20 to 30 ° C. for 7 to 10 days to complete an antioxidant fermentation microorganism preparation. The bacteria were used to isolate and culture in nature.

<Example 2>

After tanning and shaving, it gives physical properties to neutralize natural leather for various purposes through re-tanning on drums, and then the amount of chemicals for dyeing-branching process. Leather was prepared by adding 0.1% by weight of the antioxidant fermenting microbial agent.

<Example 3>

After manufacturing the dried leather (crust) through the dye-branching process, the leather coating agent is used for coating coating in the coating process, and 0.05% by weight of the antioxidant fermentation microorganism agent is added to the amount of the coating agent. Leather was applied to the leather and finished through drying.

<Example 4>

After tanning, the natural leather is neutralized by shaving and given physical properties to be used for various purposes through re-tanning in drums, and then additives for dyeing-branching process To this, 0.1% by weight of the antioxidant fermentation microorganism agent of the additive was added to perform dyeing and eggplant operation. Thereafter, after the first finished leather is manufactured through a drying process, a coating film coating agent is added to the coating process, and the amount of the coating agent is added to the weight of the antioxidant fermentation microorganism agent to prepare the leather by applying it to the leather and drying it. It was.

Experimental Example

An untreated leather (leather not adding the antioxidant fermenting microorganism agent of the present invention, weight 8.47 g, area 120 cm 2) and the treated leather (weight 8.26 g, area 126 cm 2) prepared in Example 4 were prepared.

Each of the leather samples was placed in a volatile organic compound generating container (5 L pyrex chamber) and the generating container was completely sealed. The volatile organic compound generating container containing the sample was treated for 12 hours at 80 ℃ thermostat. Volatile organic compounds generated from the incubation vessel incubated at 80 ° C. were adsorbed onto a Tenax TA Thermal Desorption tube. As the adsorption method, a water and air removal filter was mounted at the inlet of the generation vessel, and an adsorption tube was mounted at the outlet, and a vacuum was formed for 1 minute using a vacuum pump (12-15 ml / min). . If a vacuum was formed for 1 minute with a vacuum pump (12 ~ 15ℓ / min), the volatile organic compound generating container was made into 5ℓ. Therefore, all the gas in the generating container passes through the adsorption tube and the volatile organic compound generated is adsorbed to the medium in the adsorption tube. Done. The adsorption tube was treated at 380 ° C. for 3 hours before use to maintain the active state. The adsorption tube was connected to GC-MSD (Agilent 6890GC / 5973N MSD) for qualitative and quantitative analysis for 40 minutes, which was library searched to identify each component and summarized important volatile organic compounds in Table 1 below. . 1 and 2 are graphs of GC MASS results of untreated leather and treated leather, respectively.

number Volatile Organic Compounds Untreated leather Treatment leather Generation amount (㎍) ratio(%) Generation amount (㎍) ratio(%) One Carbon disulfide 24.59 100 10.11 41 2 Dimethyl silanol 7.64 100 2.28 30 3 Butanal 1.28 100 0.38 29 4 n-butanol 17.69 100 3.90 22 5 Pentanal 1.14 100 0.33 29 6 1,4-dioxane 0.94 100 - - 7 n-butyl formate 0.86 100 - - 8 Hexanal 5.39 100 1.30 24 9 n-octane 0.34 100 - - 10 2-pentanone, 4-hydroxy-4-methyl 0.63 100 - - 11 Hexamethyl cyclotrisiloxane 0.21 100 - - 12 4-ethenyl cyclohexane 0.41 100 - - 13 1-methoxy-2-propyl acetate 37.15 100 6.64 18 14 Cyclohexane 0.57 100 - - 15 n-heptanal 0.48 100 - - 16 2-butoxy ethanol 52.05 100 2.98 6 17 2,6,6-trimethyl-bicycloheptane (2,6,6-trimethyl-bicycloheptane) 0.81 100 0.30 38 18 1-methyl-4-cyclohexane (1-methyl-4-cyclohexane) 0.63 100 - - 19 Octamethyl cyclotetrasiloxane 1.00 100 - - 20 Benzoic acid 0.88 100 0.85 97 21 Decamethyl cyclopenta siloxane 0.24 100 - - 22 Dodecane 0.26 100 - - 23 Isothiocynato cyclohexane 0.49 100 - - 24 Phthalic anhydride 0.19 100 0.46 94 155.87 100 29.53 19 * Volatile organic compounds in samples: 155.87 ㎍ (100%) of untreated leather, 73.8 ㎍ (34.3%) of treated leather *-: not detected

Referring to Table 1, the total amount of volatile organic compounds generated in both samples was 215.1 ㎍ in untreated leather, 73.8 ㎍ in treated leather. When the amount of volatile organic compounds generated in untreated leather was 100%, total volatile organic compounds in treated leather were reduced by 34.3%, about 65%, and about 80% of major odor-related organic compounds. In the leather treated with antioxidant fermentation microorganisms, carbon disulfide, which is a human harmful substance to the eyes and neck, was reduced by about 59%, and about 10 kinds of volatile substances were below the measured value of the analyzer. Was detected. This is the effect of treating the antioxidant fermentation microbial agent to the leather. In addition, the content of 2-butoxy ethanol, which is harmful and toxic to humans, was reduced by 94% after treatment, and n-butyl formate, which causes itching of the body, was caused. ) Was not detected after treatment.

Antioxidant fermentation microorganisms according to the present invention can be eliminated by reducing the amount of odor and volatile organic compounds generated in the processed leather by being put into the processing process of the leather. In addition, the antioxidant fermentation microbial agent has an antimicrobial effect on the leather by making an antibacterial substance such as benzoic acid. In addition, the antioxidant fermentation microbial agent acts in the wastewater generated during the processing process of the leather to biodegrade various compounds contained in the wastewater to increase the treatment efficiency of the wastewater.

Claims (10)

Photosynthetic bacteria, yeasts, actinomycetes and lactic acid bacteria 50 to 150: 0.5 to 1.5: 0.5 to 1.5: 3 to 7 of the microbial mixture contained in the ratio of bacteria, water, organic carbon source and natural salt 3 to 7: 50 to 150: It is contained in a weight ratio of 3 to 7: 0.5 to 1.5 antioxidant fermentation microorganisms, characterized in that reducing the volatile organic compounds generated in the leather. The antimicrobial fermentation microorganism agent according to claim 1, wherein the microbial mixture is mixed with photosynthetic bacteria: yeast: actinomycetes: lactic acid bacteria at a ratio of 100: 1: 1: 1. The method of claim 1, wherein the antimicrobial fermentation microbial agent is an antimicrobial fermentation microorganism agent, characterized in that the mixture of the microbial mixture, water, organic carbon source and natural salt in the ratio of 5: 100: 5: 1. Leather comprising the antioxidant fermenting microbial agent of any one of claims 1 to 3. In the manufacturing method of leather including a preparation step, a tanning step, a dyeing step and a completion step, A method for producing leather, characterized in that the antioxidant fermentation microorganism agent of claim 1 is added in an amount of 0.05% to 0.15% by weight based on the amount of the chemical added to the dyeing process. In the manufacturing method of leather including a preparation step, a tanning step, a dyeing step and a completion step, A method for producing leather, characterized in that the addition of 0.03% to 0.07% by weight of the antioxidant fermentation microbial agent of claim 1 based on the amount of the chemical added to the coating process in the completion process. In the manufacturing method of leather including a preparation step, a tanning step, a dyeing step and a completion step, 0.05 to 0.15 wt% of the antioxidant fermentation microorganisms based on the amount of the drug added to the dyeing process and 0.03 to 0.07 wt% of the drug added to the coating process in the finishing process A method for producing leather, characterized by adding an antioxidant fermenting microorganism agent. Leather manufactured by the manufacturing method of any one of Claims 5-7. Automobile seat or interior material made of leather of claim 4. Automobile seat or interior material manufactured from the leather of claim 8.

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