A kind of microecological balance fiber containing probiotics and preparation method thereof

Abstract

The present invention discloses a microecological balance fiber containing probiotics and a preparation method thereof, wherein the fiber comprises the following materials in parts by weight: 95-99 parts of regenerated cellulose, 1-3 parts of probiotic microcapsules, and 1-3 parts of fiber additives; the fiber additives comprise the following materials in parts by weight: 0.5-1 parts of emulsifiers, 0.5-1 parts of antibacterial agents, 0.5-1 parts of dispersants, and 0.5-1 parts of adhesives; the probiotics are powders in a microcapsule state. The beneficial effects of the present invention are that the inactivated probiotics contained in the fiber can be slowly released, and the position of the pathogenic bacteria on the skin is occupied to inhibit the reproduction of the pathogenic bacteria on the skin, improve human skin problems, and avoid the occurrence of skin problems; in addition, the reproduction of pathogenic bacteria on the skin is inhibited to avoid diseases from entering the mouth.

Description

Technical Field

[0001] The invention relates to the technical field of home textile filling and clothing, in particular to a probiotic-containing microecological balance fiber and a preparation method thereof. Background Art

[0002] Probiotics, some people call them probiotics, probiotics or native health-promoting bacteria. In a broad sense, they are all those that are applied to humans or other animals and help improve the balance of intestinal microorganisms in the host. There are many types of probiotics, including: Animal Bifidobacterium Bb-12, Lactobacillus acidophilus NCFM, Lactobacillus (commonly known as A bacteria), Bifidobacterium (commonly known as B bacteria), yeast, Bulgarian Lactobacillus, etc., which can adjust the composition of intestinal flora, inhibit harmful bacteria, and thus enhance the immune capacity of the digestive tract; while ordinary probiotics are live bacteria and cannot survive under harsh conditions, so probiotics protect us all the time, and the addition of probiotic fiber can protect our body around the clock;

[0003] Currently, probiotics are mainly used in the food industry. These products enter the human body mainly through consumption and cannot protect the human skin microecology. The reproduction of pathogenic bacteria on the skin will also affect human health. The skin is prone to allergies, leading to itching, redness and other problems.

[0004] In view of the above situation, it is necessary to improve the existing traditional textiles so that they can adapt to the current needs of human skin for textiles. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and to design a microecological balance fiber containing probiotics and a preparation method thereof.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is a microecological balance fiber containing probiotics, comprising the following substances in parts by weight: 94-98 parts of regenerated cellulose, 1-3 parts of probiotic microcapsules, and 1-3 parts of fiber additives;

[0007] The fiber additive includes the following substances in parts by weight: 0.25-1 part of emulsifier, 0.25-1 part of antibacterial agent, 0.25-1 part of dispersant, and 0.25-1 part of adhesive;

[0008] The probiotics are in the form of powder in a microcapsule state.

[0009] As a further supplement to the technical solution, the probiotics are composed of a core material of a mixture of completely inactivated probiotic bacteria, cell fragments of the bacteria, and metabolites of the probiotics, with a mass ratio of 6-8:1-3:1.

[0010] As a further supplement to the technical solution, the probiotic wall material has two layers, an inner layer is a microporous starch layer, and an outer layer is a sodium alginate layer, and an extrusion method and an isoelectric precipitation method are used to embed the probiotics.

[0011] As a further supplement to the technical solution, the particle size of the probiotic microcapsules is 200-1500 nm.

[0012] As a further supplement to the technical solution, the adhesive is a polyisocyanate substance.

[0013] To further supplement the technical solution, the probiotic fiber can qualitatively detect probiotics, and the cell density is 10 8 cfu / g or above.

[0014] A method for preparing a microecological balanced fiber containing probiotics comprises the following steps:

[0015] Step 1: Select probiotic strains for fermentation, centrifugal separation, heat inactivation, concentration, spray drying, and finished product collection to obtain probiotic powder, wherein the centrifugal speed is 6000-8000rpm for 15-20min, and the drying time is 3-5h;

[0016] Step 2: using high-quality short-fiber trees as raw materials, impregnating in a sodium hydroxide solution, and then squeezing, finely crushing and aging to obtain alkali cellulose with a viscosity of (60±5) mPa.s; the alkali cellulose is subjected to a xanthation reaction with carbon disulfide to obtain cellulose sulfonate, and the cellulose sulfonate is dissolved, filtered, and degassed to obtain a viscose spinning solution;

[0017] Step 3: The probiotic powder prepared in step 1 is prepared into a 10% aqueous solution and continuously blended with the viscose spinning solution prepared in step 2 in a pre-spinning syringe, fully mixed by a dynamic mixer and a static mixer, and then spun to obtain the product;

[0018] Step 4: After spinning, the fibers are cut after plasticizing and stretching, and then pickled, desulfurized with sodium sulfite, washed three times with water, bleached and oiled, dried, and packaged to obtain the microecologically balanced fiber containing probiotics.

[0019] As a further supplement to the technical solution, the indicators of the viscose spinning solution are as follows: acetone: (8.75±0.15)%; alkali content: (4.75±0.1)%; viscosity: (55±10)S; degree of maturity: (13.5±1.5)ml; acetone and alkali content are mass fractions.

[0020] As a further supplement to the technical solution, the mass ratio of the probiotic microcapsules of the microecological balanced fiber containing probiotics to the regenerated cellulose is 0.5-3%:97-99.5%.

[0021] Its beneficial effect is that the inactivated probiotics contained in the fiber can be slowly released, occupying the position of pathogenic bacteria on the skin to inhibit the reproduction of pathogenic bacteria on the skin, improving human skin problems and avoiding the occurrence of skin problems; in addition, it inhibits the reproduction of pathogenic bacteria on the skin to avoid diseases from entering the body through the mouth. DETAILED DESCRIPTION

[0022] In order to make the technical solution more clear to those skilled in the art, the technical solution of the present invention will be described in detail below:

[0023] A probiotic-containing microecological balanced fiber, comprising the following substances in parts by weight: 94-98 parts of regenerated cellulose, 1-3 parts of probiotic microcapsules, and 1-3 parts of fiber additives;

[0024] The fiber additive includes the following substances in parts by weight: 0.25-1 part of emulsifier, 0.25-1 part of antibacterial agent, 0.25-1 part of dispersant, and 0.25-1 part of adhesive;

[0025] The probiotics are in the form of powder in a microcapsule state.

[0026] The probiotics we use are fire-extinguishing probiotics, also known as postbiotics. The composition of postbiotics is relatively complex and is a mixture. It generally includes three kinds of contents: complete inactivated probiotic bacteria, cell fragments of bacteria (cell wall components, cell polysaccharides, cell lysates), and metabolites of probiotics (short-chain fatty acids, enzymes, polypeptides, endogenous or exogenous polysaccharides). Among them, the probiotic wall material has two layers, the inner layer is a microporous starch layer, and the outer layer is a sodium alginate layer. Extrusion method and isoelectric precipitation method are used to embed probiotics. The particle size of the probiotic microcapsule is 200-1500nm.

[0027] The use of double-layer composite wall materials in the encapsulation of probiotic microcapsules reduces the loss of probiotics, improves the acid and alkali resistance of microcapsules, and is more in line with the conditions of viscose spinning. Microporous starch can be used as the inner wall material to adsorb probiotics, so that more probiotics can be retained in the inner layer. The outer layer is encapsulated with sodium alginate, which can withstand short-term high-alkali conditions.

[0028] The use of extrusion and isoelectric precipitation methods to encapsulate probiotics can provide good protection for probiotics by forming a firm microcapsule membrane structure due to the electrostatic interaction between the wall materials. The pH value of the coating solution below the isoelectric point is conducive to the coating effect and production rate of probiotics.

[0029] We choose postbiotics as our coating core material because postbiotics are inactivated probiotics. They will not proliferate during use to avoid excessive bacterial growth, which will affect the growth of other bacteria and cause an imbalance in the skin's surface flora. There is no need to worry about skin problems caused by long-term use.

[0030] The probiotic strains in the present invention are slightly different from general live bacteria products. It is necessary to screen strains with rich metabolites and high yields, collect the bacteria in the late stable period or early decay period using live bacteria fermentation, and then seal the lactic acid bacteria active factors in the bacteria at a specific temperature, environment, and time. It is necessary to minimize the effect of temperature on the active ingredients.

[0031] The probiotics in the present invention are inactivated and have undergone a special coating treatment, and can withstand high temperatures above 180°C. The normal processing temperature of textiles has no effect on the probiotics used in the present invention, and they will not be destroyed in strong acids and alkalis. The probiotic fiber in the present invention has a longer and more stable shelf life, which can reach a shelf life of about 3 years.

[0032] The minimum thickness of the probiotic-containing microecological balance fiber of the present invention is 1.1 dtex, and the preferred lengths of the fiber are 38 mm, 56 mm, and 88 mm. The single fiber strength of the fiber is greater than 2.0 cN / dtex, the elongation is about 20%, the oil content of the fiber is 0.1%-0.3%, the defect content is less than 1 mg / 100 g, and the linear density deviation rate is less than 2%.

[0033] The probiotic-containing microecological balanced fiber of the present invention can be used as filler, non-woven fabric, and blended / pure spun yarn, and can be used for weaving or knitting into fabric to make clothing products.

[0034] The microecological balance fiber containing probiotics of the present invention can be used to qualitatively and quantitatively test the probiotics, and the bacterial density is 10 8 cfu / g or more. The fiber has antibacterial, deodorizing and anti-mite functions, and the test results are all higher than the national standard values. The higher the density of bacteria in the fiber, the better the antibacterial, deodorizing and anti-mite effects of the bedding or clothing products made from it.

[0035] A probiotic-containing microecological balanced fiber, comprising the following substances in parts by weight: 94-98 parts of regenerated cellulose, 1-3 parts of probiotic microcapsules, and 1-3 parts of fiber additives;

[0036] The fiber additive includes the following substances in parts by weight: 0.25-1 part of emulsifier, 0.25-1 part of antibacterial agent, 0.25-1 part of dispersant, and 0.25-1 part of adhesive;

[0037] The probiotics are in the form of powder in a microcapsule state.

[0038] The probiotics are a mixture of a core material of completely inactivated probiotic bacteria, cell fragments of the bacteria, and metabolites of the probiotics, with a mass ratio of 6-8:1-3:1.

[0039] Among them, the probiotic wall material has two layers, the inner layer is a microporous starch layer, and the outer layer is a sodium alginate layer. The extrusion method and isoelectric precipitation method are used to embed the probiotics.

[0040] The adhesive is a polyisocyanate substance.

[0041] The preparation of probiotics includes the following steps: selecting probiotic strains for fermentation, centrifugal separation, heat inactivation, concentration, spray drying, and finished product collection to obtain probiotic powder.

[0042] A method for preparing a microecological balanced fiber containing probiotics comprises the following steps:

[0043] Step 1: Select probiotic strains for fermentation, centrifugal separation, heat inactivation, concentration (adding probiotic protective agent), spray drying, and finished product collection to obtain probiotic powder; wherein the centrifugal speed is 6000-8000rpm for 15-20min, and the drying time is 3-5h.

[0044] Step 2: Using high-quality short-fiber trees as raw materials, impregnating them in a sodium hydroxide solution, and then squeezing, finely grinding and aging them to obtain alkali cellulose with a viscosity of (60±5) mPa.s; the alkali cellulose is subjected to a xantholysis reaction with carbon disulfide to obtain cellulose sulfonate, and the cellulose sulfonate is dissolved, filtered and degassed to obtain a viscose spinning solution; wherein, the indicators of the viscose spinning solution are as follows: acetone: (8.75±0.15)%; alkali content: (4.75±0.1)%; viscosity: (55±10)S; maturity: (13.5±1.5)ml; acetone and alkali content are mass fractions.

[0045] The amount of carbon disulfide added during yellowing is 28%, the initial temperature of yellowing is 25°C, and the end temperature is 30°C.

[0046] Step 3: The probiotic powder prepared in step 1 is prepared into a 10% aqueous solution and continuously blended with the viscose spinning solution prepared in step 2 in a pre-spinning syringe, fully mixed by a dynamic mixer and a static mixer, and then spun to obtain the product;

[0047] Step 4: After spinning, the fibers are cut after plasticizing and stretching, and then pickled, desulfurized with sodium sulfite, washed three times with water, bleached and oiled, dried, and packaged to obtain the microecologically balanced fiber containing probiotics.

[0048] The mass ratio of the probiotic powder of the microecological balanced fiber containing probiotics to the regenerated cellulose is 0.5-3%:97-99.5%.

[0049] The specific characteristic components of the probiotics are one or more species of the genus Lactobacillus; specifically, Lactobacillus plantarum LP10.

[0050] Embodiment 1:

[0051] Firstly, cotton pulp is selected as raw material, impregnated with 240g / l sodium hydroxide alkali solution at 50℃, pressed, crushed, and obtained to obtain alkali cellulose with a viscosity of (60±5)mPa.s; the amount of CS2 added relative to methyl cellulose is 32%, the initial yellowing temperature is 25℃, the final yellowing temperature is 31℃, the amount of probiotic microcapsules added relative to methyl cellulose is 1%, and spinning glue is obtained through dissolution, filtration, and degassing, the spinning glue has a viscosity of 41s, a maturity of 16ml, a methyl cellulose mass content of 8.8%, and an alkali mass content of 4.5%; then acid bath spinning is carried out, with 105g / L sulfuric acid, 12g / L zinc sulfate, 330g / L sodium sulfate, and a temperature of 50℃, followed by a drawing treatment; then refining is carried out: the first and second water washing temperatures are 60℃; the desulfurization bath temperature is 80℃, and the alkali concentration is 4g / l; the third and fourth water washing temperatures are 65℃, and the drying temperature after water washing is 80℃ to obtain a microecological balanced fiber containing probiotics. The pH value of the fiber was found to be 6.0. The antibacterial results tested according to GB / T20944.3 method showed that the inhibition rate of Candida albicans was 81%, the inhibition rate of Escherichia coli was 85%, and the inhibition rate of Staphylococcus aureus was 90%. The anti-mite performance (repellent rate) tested according to GB / T24253-2009 method was 80.23%. The qualitative and quantitative analysis results of the bacteria showed that it contained Lactobacillus plantarum LP10, and the content of Lactobacillus plantarum LP10 was 1.4*10 8 cfu / g.

[0052] Embodiment 2:

[0053] The spinning conditions were the same as those in Example 1, and the amount of probiotic microcapsules added relative to the methyl cellulose was 2%, and a microecological balanced fiber containing probiotics was obtained. After testing, the pH value of the fiber was 5.8. The antibacterial results tested according to the GB / T20944.3 method showed that the inhibition rate of Candida albicans was 85%, the inhibition rate of Escherichia coli was 89%, and the inhibition rate of Staphylococcus aureus was 92%. The anti-mite performance result (repellency rate) tested according to the GB / T24253-2009 method was 85%. The qualitative and quantitative analysis results of the strains showed that it contained Lactobacillus plantarum LP10, and the content of Lactobacillus plantarum LP10 was 3.2*10 9 cfu / g.

[0054] Embodiment 3:

[0055] The spinning conditions were the same as those in Example 1, and the amount of probiotic microcapsules added relative to the methyl cellulose was 3%, and a microecological balanced fiber containing probiotics was obtained. After testing, the pH value of the fiber was 5.4. The antibacterial results tested according to the GB / T20944.3 method showed that the inhibition rate of Candida albicans was 92%, the inhibition rate of Escherichia coli was 98%, and the inhibition rate of Staphylococcus aureus was 99%. The anti-mite performance result (repellency rate) tested according to the GB / T24253-2009 method was 88%. The qualitative and quantitative analysis results of the strains showed that it contained Lactobacillus plantarum LP10, and the content of Lactobacillus plantarum LP10 was 1.5*10 10 cfu / g.

[0056] Comparative Example:

[0057] The spinning conditions were the same as those in Example 1, but no probiotic microcapsules were added to obtain conventional viscose fibers. The pH value of the fiber was found to be 7.5 after testing, and the antibacterial results tested according to the GB / T20944.3 method showed that the inhibition rate of Candida albicans was 45%, the inhibition rate of Escherichia coli was 55%, and the inhibition rate of Staphylococcus aureus was 60%. The anti-mite performance result (repellency rate) tested according to the GB / T24253-2009 method was 53%, and no probiotics were contained.

[0058] Performance Test:

[0059] The acid-base test is as follows:

[0060]

[0061] Reaching a weakly acidic pH of 6 is more beneficial to the human body and balances the acidity and alkalinity of human skin.

[0062] The antibacterial rate test is as follows:

[0063]

[0064] Experimental results: The antibacterial rates against Candida albicans, Escherichia coli and Staphylococcus aureus were 81%, 85% and 90% respectively, indicating that the sample had a good antibacterial effect.

[0065] The probiotics test is as follows: it can be qualitatively detected, and the content of Lactobacillus plantarum LP10 can be detected to be 1.4*10 8 cfu / g;

[0066]

[0067] The anti-mite test is shown in the following table: It can effectively prevent mites.

[0068]

[0069] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A microecological balance fiber containing probiotics, characterized in that: The invention comprises the following materials in parts by weight: 94-98 parts of regenerated cellulose, 1-3 parts of probiotic microcapsules, and 1-3 parts of fiber additives; The fiber additive includes the following substances in parts by weight: 0.25-1 part of emulsifier, 0.25-1 part of antibacterial agent, 0.25-1 part of dispersant, and 0.25-1 part of adhesive; The probiotics are in the form of powder in a microcapsule state.

2. The microecological balance fiber containing probiotics according to claim 1, characterized in that: The probiotics are prepared by mixing the core material of completely inactivated probiotic bacteria, cell fragments of the bacteria and metabolites of the probiotics, with a mass ratio of 6-8:1-3:

1.

3. The microecological balance fiber containing probiotics according to claim 1, characterized in that: The probiotic wall material has two layers, an inner layer is a microporous starch layer, and an outer layer is a sodium alginate layer. The probiotics are embedded by an extrusion method and an isoelectric precipitation method.

4. The microecological balance fiber containing probiotics according to claim 1, characterized in that: The particle size of the probiotic microcapsule is 200-1500nm.

5. The microecological balance fiber containing probiotics according to claim 1, characterized in that: The adhesive is a polyisocyanate substance.

6. The microecological balance fiber containing probiotics according to claim 3, characterized in that: The probiotic fiber can qualitatively detect probiotics, and the bacterial density is 10 8 cfu / g or above.

7. The method for preparing a probiotic-containing microecological balanced fiber according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Select probiotic strains for fermentation, centrifugal separation, heat inactivation, concentration, spray drying, and finished product collection to obtain probiotic powder, wherein the centrifugal speed is 6000-8000rpm for 15-20min, and the drying time is 3-5h; Step 2: using high-quality short-fiber trees as raw materials, impregnating in a sodium hydroxide solution, and then squeezing, finely crushing and aging to obtain alkali cellulose with a viscosity of (60±5) mPa.s; the alkali cellulose is subjected to a xanthation reaction with carbon disulfide to obtain cellulose sulfonate, and the cellulose sulfonate is dissolved, filtered, and degassed to obtain a viscose spinning solution; Step 3: The probiotic powder prepared in step 1 is prepared into a 10% aqueous solution and continuously blended with the viscose spinning solution prepared in step 2 in a pre-spinning syringe, fully mixed by a dynamic mixer and a static mixer, and then spun to obtain the product; Step 4: After spinning, the fibers are cut after plasticizing and stretching, and then pickled, desulfurized with sodium sulfite, washed three times with water, bleached and oiled, dried, and packaged to obtain the microecologically balanced fiber containing probiotics.

8. The method for preparing a probiotic-containing microecological balanced fiber according to claim 7, characterized in that: The indicators of the viscose spinning solution are as follows: acetone: (8.75±0.15)%; alkali content: (4.75±0.1)%; viscosity: (55±10)S; maturity: (13.5±1.5)ml; acetone and alkali content are mass fractions.

9. The method for preparing a probiotic-containing microecological balanced fiber according to claim 7, characterized in that: The mass ratio of the probiotic microcapsules in the microecological balanced fiber containing probiotics to the regenerated cellulose is 0.5-3%:97-99.5%.

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