Hemp antibacterial tampon and preparation method thereof

Abstract

The present invention belongs to the technical field of personal care products, and specifically relates to a hemp antibacterial tampon and a preparation method thereof. The present invention adopts a mixture of hemp fiber and bamboo fiber. The combination of the two can enhance the overall antibacterial and hygroscopic properties of the tampon. After biological enzyme treatment, the softness and comfort of the hemp fiber and bamboo fiber are improved. The hemp fiber and bamboo fiber have good compatibility with plant extracts, which helps to maintain the activity of the plant extracts and increase the antibacterial and soothing properties of the tampon. The prepared plant composite essence enables the plant essence to be slowly released, ensuring that the tampon continues to exert its antibacterial and soothing effects during use. The hemp antibacterial tampon prepared by the present invention has long-lasting antibacterial, anti-inflammatory, analgesic and long-lasting soothing effects, can effectively reduce the risk of infection and inflammation, and bring lasting and comfortable safety protection.

Description

Technical Field

[0001] The invention belongs to the technical field of tampons, and particularly relates to a hemp antibacterial tampon and a preparation method thereof. Background Art

[0002] Hemp, a plant fiber with natural antibacterial properties, has been widely used in the textile and medical fields. Hemp fiber contains a large number of natural antimicrobial ingredients that inhibit a variety of bacteria and fungi. Hemp fiber also has excellent chemical adsorption properties. Its porous structure increases its surface area, significantly improving adsorption performance. Therefore, tampons made from hemp fiber should have excellent antibacterial properties and good moisture absorption and perspiration properties.

[0003] Traditional female tampons are primarily made of cotton or other synthetic fibers. While they meet basic moisture absorption and hygiene requirements, they lack antibacterial properties. Especially in humid environments, ordinary tampons can easily become a breeding ground for bacteria, leading to infections and inflammation in users. To address these issues, some antibacterial tampons have emerged on the market. These products reduce bacterial growth by adding chemically synthesized antibacterial agents. However, these chemically synthesized antibacterial agents can cause skin irritation, and long-term use can have adverse effects on human health. Some tampons also use natural plant extracts to provide antibacterial effects, but these products typically apply the extracts directly to the tampon surface, causing the active ingredients to evaporate or become ineffective quickly, failing to provide long-lasting antibacterial effects. Therefore, developing an antibacterial tampon with long-lasting antibacterial properties that also provide pain relief and soothing effects is a pressing technical challenge. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention proposes a hemp antibacterial tampon and a preparation method thereof. The present invention adopts a mixture of hemp fiber and bamboo fiber. The combination of the two can enhance the overall antibacterial and hygroscopic properties of the tampon. After biological enzyme treatment, the softness and comfort of hemp fiber and bamboo fiber are improved, and hygroscopicity and air permeability are improved. Hemp fiber and bamboo fiber have good compatibility with plant extracts, which helps to maintain the activity of plant extracts and increase the antibacterial and soothing properties of the tampon. The plant composite essence prepared by the present invention and the plant essence mixed with the composite nanofiber membrane can be slowly released to ensure that the tampon continues to play an antibacterial and soothing effect during use. The added angelica extract has the effects of nourishing blood and activating blood circulation, regulating menstruation and relieving pain, which helps to relieve menstrual discomfort. Blumea balsamifera extract has antibacterial, anti-inflammatory and analgesic effects. Motherwort extract has the effects of promoting blood circulation and regulating menstruation, promoting diuresis and reducing swelling. The hemp antibacterial tampon prepared by the present invention has long-lasting antibacterial, anti-inflammatory and analgesic effects and long-lasting soothing effects, which can effectively reduce the risk of infection and inflammation, and bring lasting and comfortable safety protection.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0006] The present invention provides a hemp antibacterial tampon, which is prepared from the following raw materials in parts by weight: 70-90 parts of hemp fiber, 20-50 parts of bamboo fiber, 15-30 parts of angelica extract, 1-8 parts of Blumea balsamifera extract, 1-20 parts of Leonurus japonicus extract, 5-15 parts of plant compound essence, and 5-25 parts of moisturizer;

[0007] Preferably, the hemp fiber has a length of 30-50 mm and a fineness of 20-40 μm, and the bamboo fiber has a length of 10-25 mm and a fineness of 50-65 μm.

[0008] Preferably, the moisturizing agent is one of propylene glycol, butylene glycol and glycerin.

[0009] Furthermore, the preparation method of the Blumea Balsamifera extract is: crush Blumea Balsamifera, pass through a 100-mesh sieve, extract with anhydrous ethanol, the dosage ratio of Blumea Balsamifera to anhydrous ethanol is 1-3 g:10 mL, extract for 2 h, and filter to obtain the Blumea Balsamifera extract.

[0010] Furthermore, the raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier, wherein the dosage ratio of the honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL.

[0011] The preparation method of the plant compound essence specifically comprises the following steps:

[0012] A1. Weigh polylactic acid fibers, cut them, crush them with a grinder, and add them to 80°C deionized water to form a polylactic acid fiber solution. Stir for 1 hour. Weigh gelatin and dissolve it in deionized water. Stir with a thermostatic stirrer at a speed of 200-500 rpm, a temperature of 40-70°C, and a stirring time of 20-40 minutes to form a gelatin solution.

[0013] A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 1.5-4:1, and treating with an ultrasonic cleaner for 1 hour to obtain a mixed solution;

[0014] A3. The mixed solution prepared in step A2 was used to prepare a composite nanofiber membrane using an electrospinning machine. A 23G metal needle was used to control the ejection of the electrospinning solution. The pumping rate was 1-3 mL / h, the applied voltage was 30 kV, the distance between the syringe needle tip and the receiver was 20-30 cm, the syringe swing speed was 3 mm / s, the receiver speed was 2000 r / min, the spinning environment temperature was 28°C, the relative humidity was 60%, and the spinning time was 1-1.5 h to obtain a composite nanofiber membrane.

[0015] A4, mixing honeysuckle extract, valerian extract, liquorice extract, tea tree oil, and peppermint oil, adding an emulsifier to emulsify, stirring and mixing, and stirring at 500-1000 rpm for 2-6 hours to obtain an emulsion;

[0016] A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 for 10-30 minutes to ensure that the emulsion completely infiltrates the composite nanofiber membrane to obtain the plant composite essence.

[0017] Furthermore, the preparation method of the herb extract is as follows: take the leaves of the herb, clean them, crush them with a grinder and pass them through a 60-mesh sieve, mix them with water in a mass ratio of 1:15, heat and boil them for 1 hour, filter them, and dry them to obtain the herb extract.

[0018] Furthermore, the preparation method of the licorice extract is as follows: taking dried licorice, crushing it, passing it through a 60-mesh sieve, putting the powder into a filter paper tube, placing it in a Soxhlet extractor, adding anhydrous ethanol according to a dosage ratio of 1 g:12 mL, reflux extraction for 4 hours, filtering, and obtaining the licorice extract.

[0019] Furthermore, in step A1, the ratio of the polylactic acid fiber to deionized water is 1-5 g:25 mL, and the ratio of the gelatin to deionized water is 1-3 g:30 mL.

[0020] Furthermore, the emulsifier is hydroxypropyl cellulose.

[0021] The present invention also provides a hemp antibacterial tampon and a preparation method thereof, which specifically comprises the following steps:

[0022] S1, weighing hemp fiber and bamboo fiber by weight and mixing them evenly, pretreating the hemp fiber and bamboo fiber with a biological enzyme, dissolving angelica sinensis extract, Blumea balsamifera extract, and Leonurus japonicus extract by weight in 3-15 parts of a moisturizer to form a plant extract, and immersing the pretreated hemp fiber and bamboo fiber in the plant extract for 2-6 hours to obtain an impregnated fiber body;

[0023] S2, dissolving the plant compound essence in 2-10 parts by weight of a moisturizer to form a plant compound essence liquid, and coating the infiltrated fiber obtained in step S1 with the plant compound essence liquid to form a mixed fiber layer;

[0024] S3, laying the mixed fiber layer obtained in step S2 and pressing it into a strip-shaped fiber layer, fixing a cotton thread to the center of the strip-shaped fiber layer, with the tail end of the cotton thread exposed 9-20 cm outside the strip-shaped fiber layer, and wrapping the strip-shaped fiber layer with a non-woven fabric, wherein the non-woven fabric is impregnated with a plant composite essence solution and dried to obtain a cotton strip;

[0025] S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

[0026] Furthermore, the process of pretreating hemp fiber and bamboo fiber with biological enzymes in step S1 is specifically as follows: soaking the hemp fiber and bamboo fiber in water, mixing them with biological enzymes after complete immersion, preparing a biological enzyme solution, and completely immersing the hemp fiber and bamboo fiber in the biological enzyme solution, wherein the biological enzyme is a mixture of cellulase and hemicellulase, the mass ratio is 1:1, the temperature is 40-60 ° C, the time is 6-24 h, and continuous stirring is performed. After the biological enzyme treatment, the temperature is raised to 90 ° C for enzyme inactivation treatment for 10 min, and then the fibers are washed with water and dried before use.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The hemp antibacterial tampons prepared by the present invention use hemp fibers and bamboo fibers, and the combination of the two can enhance the overall antibacterial and hygroscopic properties of the tampons. After being treated with biological enzymes, the softness and comfort of the hemp fibers and bamboo fibers are improved, the specific surface area of the hemp fibers is increased, and the hygroscopicity and air permeability are improved. The prepared plant composite essence, the nanofiber membrane, is combined with the hemp fibers and bamboo fibers to improve the compatibility between the plant extracts and the fibers, and avoid the rapid loss of active ingredients during the preparation and use process. The nanofiber membrane is used to load the plant extracts and essential oils. The nanofiber membrane serves as a carrier, which helps to stabilize the active ingredients in the plant extracts and essential oils and prolong the lasting effect in the tampons. In addition, the nanofiber membrane can control the release rate of the active ingredients, achieve slow release, and prolong the antibacterial effect. The composite nanofiber membrane The high specific surface area and hygroscopicity enhance the tampon's absorbency, maintaining lasting dryness during use. Hemp and bamboo fibers inherently possess excellent breathability and hygroscopicity. Combined with the composite nanofiber membrane, these antibacterial tampons further enhance their comfort and breathability. Honeysuckle extract and tea tree oil, both known for their strong antibacterial properties, slowly release their active ingredients when combined with the composite nanofiber membrane, enhancing and prolonging the tampon's antibacterial properties. Licorice and valerian extracts extend the duration of their anti-inflammatory and calming effects. Combined with the cooling effect of peppermint oil, they provide a more comprehensive soothing effect, helping to alleviate menstrual anxiety and tension. The aroma of peppermint and tea tree oil, combined with the composite nanofiber membrane, is released over a long period of time, providing a refreshing user experience. Hemp and bamboo fibers inherently possess excellent moisture-wicking properties. Bio-enzyme treatment and the addition of a plant extract further enhance their moisture-wicking properties by reducing bacterial growth. The hemp antibacterial tampon prepared by the present invention is added with angelica extract, Blumea Balsamifera extract and Leonurus japonicus extract. The angelica extract has the effects of nourishing blood and activating blood circulation, regulating menstruation and relieving pain. It can be directly applied to the tampon to act on the skin quickly, which helps to relieve menstrual discomfort. Blumea Balsamifera extract has antibacterial, anti-inflammatory and analgesic effects. Direct application can provide an immediate soothing effect. Leonurus japonicus extract has the effects of activating blood circulation and regulating menstruation, promoting diuresis and reducing swelling, which is very beneficial for menstrual care. The added moisturizing agent not only acts as a moisturizing agent alone, but also improves the antibacterial and antioxidant properties of the tampon, has a certain moisturizing ability, helps to maintain the softness of the tampon, and helps other antibacterial ingredients to be better adsorbed on the fiber surface, thereby improving the antibacterial effect. Hemp fiber and bamboo fiber are both natural fibers, green and environmentally friendly, and can be biodegraded. Combined with plant composite essence, the hemp antibacterial tampon is made healthier and more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is an SEM image of the fracture surface of the hemp antibacterial tampon prepared in the present invention. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] The experimental methods in the following examples, unless otherwise specified, are conventional methods. The experimental materials used in the following examples, unless otherwise specified, were purchased from commercial sources. Angelica sinensis extract and Leonurus japonicus extract were purchased from Shandong Pingju Biotechnology Co., Ltd., honeysuckle extract was purchased from Changsha Shanghe Biotechnology Co., Ltd., and cellulase and hemicellulase were purchased from Hunan Yunbang Biotechnology Co., Ltd.

[0032] Example 1: This example provides a hemp antibacterial tampon, which is prepared from the following raw materials in parts by weight: 70 parts of hemp fiber, 50 parts of bamboo fiber, 15 parts of angelica extract, 1 part of Blumea balsamifera extract, 1 part of Leonurus japonicus extract, 5 parts of plant compound essence, and 5 parts of propylene glycol;

[0033] The preparation method of the Blumea Balsamifera extract comprises the following steps: grinding Blumea Balsamifera, passing through a 100-mesh sieve, extracting with anhydrous ethanol, wherein the ratio of Blumea Balsamifera to anhydrous ethanol is 1 g:10 mL, extracting for 2 h, and filtering to obtain the Blumea Balsamifera extract.

[0034] The raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier, wherein the dosage ratio of the honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL.

[0035] The preparation method of the plant compound essence specifically comprises the following steps:

[0036] A1: Weigh polylactic acid fibers, cut them, crush them with a grinder, and add them to 80°C deionized water to form a polylactic acid fiber solution. Stir for 1 hour. Weigh gelatin and dissolve it in deionized water. Stir with a thermostatic stirrer at 200 rpm, 40°C, and 20 minutes to form a gelatin solution.

[0037] A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 1.5:1, and treating with an ultrasonic cleaner for 1 h at a power of 240 W to obtain a mixed solution;

[0038] A3. The mixed solution prepared in step A2 was used to prepare a nanofiber membrane using an electrospinning machine. A 23G metal needle was used to control the ejection of the electrospinning solution. The pumping rate was 1 mL / h, the applied voltage was 30 kV, the distance between the syringe needle tip and the receiver was 20 cm, the syringe swing speed was 3 mm / s, the receiver speed was 2000 r / min, the spinning environment temperature was 28°C, the relative humidity was 60%, and the spinning time was 1 h to obtain a composite nanofiber membrane.

[0039] A4, mixing honeysuckle extract, valerian extract, liquorice extract, tea tree oil, and peppermint oil, adding hydroxypropyl cellulose as an emulsifier to emulsify, stirring and mixing, and stirring at 500 rpm for 2 h to obtain an emulsion;

[0040] A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 for 10 minutes to ensure that the emulsion completely infiltrates the composite nanofiber membrane, thereby obtaining the plant composite essence.

[0041] The preparation method of the herbaceous sedge extract is as follows: take the herbaceous sedge leaves, clean them, grind them with a grinder and pass them through a 60-mesh sieve, mix them with water in a mass ratio of 1:15, heat and boil them for 1 hour, filter them, and dry them to obtain the herbaceous sedge extract.

[0042] The preparation method of licorice extract is as follows: take dried licorice, grind it, pass it through a 60-mesh sieve, put the powder into a filter paper tube, place it in a Soxhlet extractor, add anhydrous ethanol at a dosage ratio of 1 g:12 mL, reflux extraction for 4 hours, and filter to obtain the licorice extract.

[0043] This embodiment also provides a hemp antibacterial tampon and a preparation method thereof, which specifically includes the following steps:

[0044] S1, weighing hemp fiber and bamboo fiber by weight and mixing them, pretreating the hemp fiber and bamboo fiber with biological enzymes, the biological enzymes are a mixture of cellulase and hemicellulase, the mass ratio of which is 1:1, soaking the hemp fiber and bamboo fiber in water, mixing them with the biological enzymes after they are completely soaked, preparing a biological enzyme solution, and completely immersing the hemp fiber and bamboo fiber in the biological enzyme solution at a temperature of 60°C for 12 hours with continuous stirring, after the biological enzyme treatment, raising the temperature to 90°C for enzyme inactivation treatment for 10 minutes, then washing them with water, drying them and using them, taking angelica extract, Blumea balsamifera extract and Leonurus japonicus extract by weight, dissolving them in 3 parts of propylene glycol to form a plant extract, and immersing the pretreated hemp fiber and bamboo fiber in the plant extract for 2 hours to obtain an impregnated fiber body;

[0045] S2, dissolving the plant compound essence in 2 parts by weight of propylene glycol to form a plant compound essence liquid, and coating the impregnated fiber obtained in step S1 with the plant compound essence liquid to form a mixed fiber layer;

[0046] S3, laying the mixed fiber layer obtained in step S2 and pressing it into a strip-shaped fiber layer, fixing a cotton thread at the center of the strip-shaped fiber layer, with the tail end of the cotton thread exposed 9 cm outside the strip-shaped fiber layer, wrapping the strip-shaped fiber layer with a non-woven fabric, and impregnating the non-woven fabric with a plant compound essence solution and drying it to obtain a cotton strip;

[0047] S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

[0048] Example 2: This example provides a hemp antibacterial tampon, which is prepared from the following raw materials in parts by weight: 80 parts of hemp fiber, 40 parts of bamboo fiber, 20 parts of angelica extract, 4 parts of Blumea balsamifera extract, 10 parts of Leonurus japonicus extract, 9 parts of plant compound essence, and 15 parts of butylene glycol;

[0049] The preparation method of the Blumea Balsamifera extract comprises the following steps: grinding Blumea Balsamifera, passing through a 100-mesh sieve, extracting with anhydrous ethanol, wherein the ratio of Blumea Balsamifera to anhydrous ethanol is 2 g:10 mL, extracting for 2 h, and filtering to obtain the Blumea Balsamifera extract.

[0050] The raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier, wherein the dosage ratio of the honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL.

[0051] The preparation method of the plant compound essence specifically comprises the following steps:

[0052] A1: Weigh polylactic acid fibers, cut them, crush them with a grinder, and add them to 80°C deionized water to form a polylactic acid fiber solution. Stir for 1 hour. Weigh gelatin and dissolve it in deionized water. Stir with a thermostatic stirrer at 400 rpm, 50°C, and 30 minutes to form a gelatin solution.

[0053] A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 2.5:1, and treating with an ultrasonic cleaner for 1 h at a power of 240 W to obtain a mixed solution;

[0054] A3. The mixed solution prepared in step A2 was used to prepare a nanofiber membrane using an electrospinning machine. A 23G metal needle was used to control the ejection of the electrospinning solution. The pumping rate was 2 mL / h, the applied voltage was 30 kV, the distance between the syringe needle tip and the receiver was 21 cm, the syringe swing speed was 3 mm / s, the receiver speed was 2000 r / min, the spinning environment temperature was 28°C, the relative humidity was 60%, and the spinning time was 1.2 h to obtain a composite nanofiber membrane.

[0055] A4, honeysuckle extract, valerian extract, liquorice extract, tea tree oil, and peppermint oil were mixed, and hydroxypropyl cellulose (an emulsifier) was added to emulsify the mixture. The mixture was stirred at 8000 rpm for 4 h to obtain an emulsion.

[0056] A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 for 20 minutes to ensure that the emulsion completely infiltrates the composite nanofiber membrane, thereby obtaining the plant composite essence.

[0057] The preparation methods of the Herba Lysimachiae and Licorice extracts were the same as those in Example 1.

[0058] This embodiment also provides a hemp antibacterial tampon and a preparation method thereof, which specifically includes the following steps:

[0059] S1, weighing hemp fiber and bamboo fiber by weight and mixing them, pretreating the hemp fiber and bamboo fiber with biological enzymes, the biological enzymes are a mixture of cellulase and hemicellulase, the mass ratio of which is 1:1, soaking the hemp fiber and bamboo fiber in water, mixing them with the biological enzymes after they are completely soaked, preparing a biological enzyme solution, and completely immersing the hemp fiber and bamboo fiber in the biological enzyme solution at a temperature of 60°C for 12 hours with continuous stirring, after the biological enzyme treatment, raising the temperature to 90°C for enzyme inactivation treatment for 10 minutes, then washing them with water, drying them and using them, taking angelica extract, Blumea balsamifera extract and Leonurus japonicus extract by weight, dissolving them in 9 parts of butanediol to form a plant extract, and immersing the pretreated hemp fiber and bamboo fiber in the plant extract for 4 hours to obtain an impregnated fiber body;

[0060] S2, dissolving the plant compound essence in 6 parts by weight of butanediol to form a plant compound essence liquid, and coating the impregnated fiber obtained in step S1 with the plant compound essence liquid to form a mixed fiber layer;

[0061] S3, laying the mixed fiber layer obtained in step S2 and pressing it into a strip-shaped fiber layer, fixing a cotton thread at the center of the strip-shaped fiber layer, with the tail end of the cotton thread exposed 15 cm outside the strip-shaped fiber layer, wrapping the strip-shaped fiber layer with a non-woven fabric, and impregnating the non-woven fabric with a plant compound essence solution and drying it to obtain a cotton strip;

[0062] S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

[0063] Example 3: This example provides a hemp antibacterial tampon, which is prepared from the following raw materials in parts by weight: 90 parts of hemp fiber, 20 parts of bamboo fiber, 30 parts of angelica extract, 8 parts of Blumea balsamifera extract, 20 parts of Leonurus japonicus extract, 15 parts of plant compound essence, and 25 parts of glycerin;

[0064] The preparation method of the Blumea Balsamifera extract comprises the following steps: grinding Blumea Balsamifera, passing through a 100-mesh sieve, extracting with anhydrous ethanol, wherein the ratio of Blumea Balsamifera to anhydrous ethanol is 3 g:10 mL, extracting for 2 h, and filtering to obtain the Blumea Balsamifera extract.

[0065] The raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier, wherein the dosage ratio of the honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL.

[0066] The preparation method of the plant compound essence specifically comprises the following steps:

[0067] A1: Weigh polylactic acid fibers, cut them, crush them with a grinder, and add them to 80°C deionized water to form a polylactic acid fiber solution. Stir for 1 hour. Weigh gelatin and dissolve it in deionized water. Stir with a thermostatic stirrer at 500 rpm, 70°C, and 40 minutes to form a gelatin solution.

[0068] A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 4:1, and treating with an ultrasonic cleaner for 1 h at a power of 240 W to obtain a mixed solution;

[0069] A3. The mixed solution prepared in step A2 was used to prepare a nanofiber membrane using an electrospinning machine. A 23G metal needle was used to control the ejection of the electrospinning solution. The pumping rate was 3 mL / h, the applied voltage was 30 kV, the distance between the syringe needle tip and the receiver was 30 cm, the syringe swing speed was 3 mm / s, the receiver speed was 2000 r / min, the spinning environment temperature was 28°C, the relative humidity was 60%, and the spinning time was 1.5 h to obtain a composite nanofiber membrane.

[0070] A4, mixing honeysuckle extract, valerian extract, liquorice extract, tea tree oil, and peppermint oil, adding hydroxypropyl cellulose as an emulsifier to emulsify, stirring and mixing at 1000 rpm for 2-6 hours to obtain an emulsion;

[0071] A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 for 10-30 minutes to ensure that the emulsion completely infiltrates the composite nanofiber membrane, thereby obtaining the plant composite essence.

[0072] The preparation methods of the Herba Lysimachiae and Licorice extracts were the same as those in Example 1.

[0073] This embodiment also provides a hemp antibacterial tampon and a preparation method thereof, which specifically includes the following steps:

[0074] S1, weighing hemp fiber and bamboo fiber by weight and mixing them, pretreating the hemp fiber and bamboo fiber with biological enzymes, the biological enzymes being a mixture of cellulase and hemicellulase in a mass ratio of 1:1, soaking the hemp fiber and bamboo fiber in water, mixing them with the biological enzymes after they are completely soaked, preparing a biological enzyme solution, and completely immersing the hemp fiber and bamboo fiber in the biological enzyme solution at a temperature of 60°C for 12 hours with continuous stirring, after the biological enzyme treatment, raising the temperature to 90°C for enzyme inactivation treatment for 10 minutes, washing with water, and drying before use, taking angelica extract, Blumea balsamifera extract, and Leonurus japonicus extract by weight, dissolving them in 15 parts of glycerin to form a plant extract, and immersing the pretreated hemp fiber and bamboo fiber in the plant extract for 6 hours to obtain an impregnated fiber body;

[0075] S2, dissolving the plant compound essence in 10 parts by weight of glycerin to form a plant compound essence liquid, and coating the infiltrated fiber obtained in step S1 with the plant compound essence liquid to form a mixed fiber layer;

[0076] S3, laying the mixed fiber layer obtained in step S2 and pressing it into a strip-shaped fiber layer, fixing a cotton thread at the center of the strip-shaped fiber layer, with the tail end of the cotton thread exposed 20 cm outside the strip-shaped fiber layer, wrapping the strip-shaped fiber layer with a non-woven fabric, and impregnating the non-woven fabric with a plant compound essence solution and drying it to obtain a cotton strip;

[0077] S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

[0078] The difference between Comparative Example 1 and Example 1 is that the hemp fiber and bamboo fiber are not pretreated in step S1, and the rest is the same as Example 1.

[0079] The difference between Comparative Example 2 and Example 1 is that the plant extract is applied in step S1, and the rest is the same as Example 1.

[0080] The difference between Comparative Example 3 and Example 1 is that step S2 does not use the form of plant composite essence for coating. The preparation method of the hemp antibacterial cotton strip is as follows: hemp fiber and bamboo fiber are weighed by weight and mixed, the hemp fiber and bamboo fiber are pretreated with biological enzymes, and then immersed in plant extract for 2-6 hours; honeysuckle extract, valerian extract, licorice extract, tea tree oil and peppermint oil are mixed, stirred and mixed, and then directly coated, and then dried, laid out, and pressed into a strip fiber layer, cotton thread is fixed in the center of the strip fiber layer, and the tail end of the cotton thread is exposed 9-20 cm outside the strip fiber layer, and the strip fiber layer is wrapped with non-woven fabric to obtain a cotton strip body; the obtained cotton strip body is packaged to obtain hemp antibacterial cotton strip.

[0081] Experimental Example 1: The antibacterial test was carried out using the GB\T20944.3-2008 oscillation method. The hemp antibacterial cotton strips prepared in Examples 1-3 and Comparative Examples 1-3 were used as samples to test the antibacterial effects on Escherichia coli, Staphylococcus aureus and Candida albicans. The samples were tested using the prepared bacterial inoculum and Candida albicans inoculum, and 3 blank control groups were set up. After oscillation for 18 h, the results were as follows: Y=(W t -Q t ) / Wt×100%, to calculate the antibacterial rate, where Y is the antibacterial rate of the sample, W t Q is the average of the viable bacterial concentrations of Escherichia coli, Staphylococcus aureus, and Candida albicans in the three control samples in 18 h oscillation contact flasks. t The average value of the live bacteria concentration in the flask after 18 hours of oscillation contact of the hemp antibacterial tampon samples prepared in Examples 1-3 and Comparative Examples 1-3 is shown in Table 1.

[0082] Experimental Example 2: Hygroscopicity test. The hygroscopicity test was carried out according to GB / T 21655.1-2008. The antibacterial cotton strips prepared in Examples 1-3 and Comparative Examples 1-3 were used as test samples. Each sample was placed flat and wrinkle-free. The original mass of each sample was weighed to an accuracy of 0.001 g. The sample was placed in a container filled with grade 3 water. After absorbing water, the sample naturally sank. If the sample did not sink, the sample was pressed into the water and then lifted up. This was repeated twice. The sample was completely immersed in water for 5 minutes and then taken out. The sample was naturally flattened and hung vertically. The water in the sample naturally dripped. When the sample stopped dripping (when the time interval between two drops of water was greater than 30 s, it was considered that the sample no longer dripped), the sample was immediately taken out with tweezers and weighed to an accuracy of 0.001. g, according to A=(m-m0)\m0×100, where A is the water absorption rate (%), m0 is the original mass of the sample, in grams (g), and m is the mass of the sample after being soaked and dripping with water, in grams (g). The calculated water absorption rate is shown in Table 1.

[0083] Table 1

[0084]

[0085] The results in Table 1 show that the inhibition rates of Examples 1-3 against Escherichia coli, Staphylococcus aureus and Candida albicans are all above 90%, indicating that the hemp antibacterial tampons prepared by the present invention have good antibacterial effects and can effectively avoid infection and inflammation. It can be clearly seen from Table 1 that the water absorption rates and antibacterial rates of Examples 1-3 are higher than those of Comparative Examples 1-3, among which the water absorption rate of Example 2 reaches 262%, which has good moisture absorption performance and can meet the moisture absorption requirements of tampons.

[0086] Experimental Example 3: A skin irritation test was conducted on rabbits. Rabbits with healthy and undamaged skin were selected as test subjects. The hemp antibacterial cotton strips prepared in Example 1-33 and Comparative Example 1-3 were used as samples. The hair on both sides of the rabbit's spine on the back was removed 12 hours before the test (an area of 10×15 cm) and used as the test and observation site. The hemp antibacterial cotton strip samples were directly contacted with the skin on both sides of the rabbit's spine. After 24 hours, 48 hours and 72 hours of contact, the skin was observed for erythema and water-induced irritation reactions, and scores were given according to the skin reactions. The irritation scores are shown in Table 2.

[0087] Table 2

[0088]

[0089] The results in Table 2 show that the hemp antibacterial tampons prepared in the present invention are safe and non-irritating and can be used with confidence.

[0090] Figure 1 The SEM image of the fracture surface of the hemp antibacterial tampon prepared by the present invention shows that the fibers are tightly bonded to each other and well bonded with the polylactic acid fibers in the plant composite essence, indicating that the hemp antibacterial tampon of the present invention is successfully prepared and has good tensile elasticity, and can maintain good comfort during use.

[0091] The present invention and its embodiments are described above. Such description is not restrictive. The drawings show only one embodiment of the present invention, and actual applications are not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, any method and embodiment similar to the technical solution without creative design shall fall within the scope of protection of the present invention.

Claims

1. A hemp antibacterial tampon, characterized in that: The hemp antibacterial tampon is prepared from the following raw materials in parts by weight: 70-90 parts of hemp fiber, 20-50 parts of bamboo fiber, 15-30 parts of angelica extract, 1-8 parts of Blumea balsamifera extract, 1-20 parts of motherwort extract, 5-15 parts of plant compound essence, and 5-25 parts of moisturizer. The hemp fiber has a length of 30-50 mm and a fineness of 20-40 μm, and the bamboo fiber has a length of 10-25 mm and a fineness of 50-65 μm; The raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, mint oil and emulsifier, wherein the amount ratio of honeysuckle extract, valerian extract, licorice extract, tea tree oil, mint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL; The preparation method of the plant compound essence specifically comprises the following steps: A1: Weigh polylactic acid fibers, cut and crush them, add them to deionized water to form a polylactic acid fiber solution, and stir. Weigh gelatin and dissolve it in deionized water, and stir to form a gelatin solution. A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 1.5-4:1, and ultrasonically treating to obtain a mixed solution; A3, using an electrospinning machine to prepare a composite nanofiber membrane using the mixed solution prepared in step A2; A4, mixing honeysuckle extract, valerian extract, licorice extract, tea tree oil and peppermint oil, adding an emulsifier for emulsification, and stirring to obtain an emulsion; A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 to obtain a plant composite essence; The emulsifier is hydroxypropyl cellulose, and the moisturizer is one of propylene glycol, butylene glycol, and glycerin; The preparation method of the hemp antibacterial tampon specifically comprises the following steps: S1, weighing hemp fiber and bamboo fiber by weight and mixing them evenly, pretreating the hemp fiber and bamboo fiber with a biological enzyme, taking angelica extract, Blumea balsamifera extract, and Leonurus japonicus extract by weight, adding 3-15 parts of a moisturizer and mixing evenly to form a plant extract, and immersing the pretreated hemp fiber and bamboo fiber in the plant extract for 2-6 hours to obtain an impregnated fiber body; S2, dissolving the plant compound essence in 2-10 parts by weight of a moisturizer to form a plant compound essence liquid, and coating the infiltrated fiber obtained in step S1 with the plant compound essence liquid to form a mixed fiber layer; S3, laying the mixed fiber layer obtained in step S2 into a web and pressing it into a strip-shaped fiber layer, fixing a cotton thread to the center of the strip-shaped fiber layer, with the tail end of the cotton thread exposed 9-20 cm outside the strip-shaped fiber layer, and wrapping the strip-shaped fiber layer with a non-woven fabric to obtain a cotton strip; S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

2. The hemp antibacterial tampon according to claim 1, characterized in that: The preparation method of the Blumea Balsamifera extract comprises the following steps: grinding Blumea Balsamifera, passing through a 100-mesh sieve, extracting with anhydrous ethanol, wherein the ratio of Blumea Balsamifera to anhydrous ethanol is 1-3 g:10 mL, extracting for 2 h, and filtering to obtain the Blumea Balsamifera extract.

3. The hemp antibacterial tampon according to claim 1, characterized in that: In step A1, the amount ratio of the polylactic acid fiber and deionized water is 1-5 g:25 mL, and the amount ratio of gelatin and deionized water is 1-3 g:30 mL. In step A1, the stirring is carried out using a constant temperature stirrer, the stirring speed is set to 200-500 rpm, the temperature is set to 40-70 ° C, and the time is set to 20-40 min.

4. The hemp antibacterial tampon according to claim 1, characterized in that: In step A3, the electrospinning machine uses a 23G metal needle to control the ejection of the electrospinning solution, the pumping speed is 1-3 mL / h, the applied voltage is 30 kV, the distance between the syringe needle tip and the receiver is 20-30 cm, the syringe swing speed is 3 mm / s, the receiver speed is 2000 r / min, the spinning environment temperature is 28 ° C, the relative humidity is 60%, and the spinning time is 1-1.5 h.

5. The hemp antibacterial tampon according to claim 1, characterized in that: The preparation method of the valerian extract comprises the following steps: taking valerian leaves, cleaning them, crushing them with a grinder and passing them through a 60-mesh sieve, mixing them with water at a mass ratio of 1:15, heating and boiling them for 1 hour, filtering them, and drying them to obtain the valerian extract; The preparation method of the licorice extract comprises the following steps: taking dried licorice, crushing it, passing it through a 60-mesh sieve, putting the powder into a filter paper tube, placing it in a Soxhlet extractor, adding anhydrous ethanol at a dosage ratio of 1 g:12 mL, refluxing and extracting it for 4 hours, and filtering to obtain the licorice extract.

6. The hemp antibacterial tampon according to claim 1, characterized in that: In step S1, the process of pretreating hemp fiber and bamboo fiber with biological enzymes is specifically as follows: soaking the hemp fiber and bamboo fiber in water, mixing them with biological enzymes after they are completely soaked, preparing the biological enzymes into biological enzyme solutions, and completely immersing the hemp fiber and bamboo fiber in the biological enzyme solution at a temperature of 60°C for 12 hours with continuous stirring. After biological enzyme treatment, the enzymes are inactivated and then washed with water, and dried before use.

7. The hemp antibacterial tampon according to claim 1, characterized in that: The biological enzyme is a mixture of cellulase and hemicellulase with a mass ratio of 1:1.

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