Degradable vein fiber product with light transmission and preparation method thereof
Through alkali cooking, Aspergillus oryzae fermentation and enzymatic decomposition, the thermal stability and light transmittance of the fiber are improved, and the problems of difficult degradation of chemical synthetic materials and limited storage of natural materials are solved, so as to achieve degradable and light transmittance fiber products.
Patent Information
- Application Number
- CN202510062060.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-04-25
AI Technical Summary
There are problems with difficult degradation of chemical synthetic materials in existing textiles, which lead to environmental pollution. At the same time, natural materials are limited in long-term preservation and wide application.
Through innovative processes such as alkali cooking, Aspergillus oryzae fermentation and specific enzymatic decomposition, the thermal stability and light transmittance of the fiber can be improved, so that it can be stored for a long time at room temperature and quickly degrade after being discarded.
The light transmittance and degradability of fiber products are achieved, and can be stored for a long time at room temperature and quickly degraded after being discarded, solving the dual challenges of environmental friendliness and material performance.
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Figure CN119877116A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of fiber products, and in particular relates to a light-transmissive degradable leaf vein fiber product and a preparation method thereof. Background Art
[0002] In today's textile field, chemical synthetic materials and natural materials occupy a dominant position, but each has its own advantages and disadvantages. Chemical synthetic materials, such as polyester fiber and nylon, are widely used in multiple market segments such as clothing, home textiles, and industrial textiles due to their excellent strength, wear resistance, and easy processing and molding, which has greatly promoted the large-scale development of the textile industry. However, the production process of such materials is highly dependent on non-renewable resources such as petroleum and coal. From raw material mining to polymerization reaction to make fibers, each link is accompanied by a large amount of energy consumption, and chemical synthetic materials are difficult to degrade. Therefore, the random disposal of chemical synthetic materials is likely to aggravate the environmental pollution crisis. Natural materials, such as cotton, wool, silk, etc., are relatively friendly to the environment during their growth or formation, relatively friendly in production and processing, can be naturally degraded after being discarded, and have unique textures such as softness, skin-friendly, and breathable. They are deeply loved by consumers, but natural materials themselves have shortcomings that are difficult to overcome, and natural materials are limited in long-term preservation and wide application. Therefore, it is very important to make up for the above technical defects and prepare environmentally friendly and degradable fiber products. Summary of the invention
[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention improves the thermal stability and light transmittance of the fiber through innovative processes such as alkali boiling, Aspergillus oryzae fermentation and specific enzymatic hydrolysis, so that it can be stored for a long time at room temperature and degrade quickly after disposal.
[0004] In order to achieve the above object, the following technical scheme is adopted: The present invention provides a light-transmissive degradable leaf vein fiber product and a preparation method thereof, the preparation method comprising the following steps:
[0005] S1. Select mature and healthy banana leaves, wash and dry them, and cut them into banana leaf fragments with a side length of 10 cm and a width of 1.5 cm. The banana leaf fragments are completely immersed in a 10-15% sodium hydroxide solution, boiled at 100°C for 15-40 minutes, and then the banana leaf fragments are taken out and rinsed with water until pH = 7 to obtain alkali-treated banana leaf fragments;
[0006] S2. The Aspergillus oryzae slant was activated in PDA slant medium at 28°C for 3 days, the activated slant was rinsed with sterile water, and the Aspergillus oryzae spore suspension was obtained after filtration, and sterile water was added to adjust the concentration of the Aspergillus oryzae spore suspension to 10 6CFU / mL, the alkali-treated banana leaf fragments are mixed with magnesium sulfate, potassium dihydrogen phosphate, ammonium citrate, manganese sulfate, potassium chloride, and Tween 80 in proportion to obtain a fermentation mixture, which is placed in a fermentation device, and then the Aspergillus oryzae spore suspension is added to the fermentation mixture, mixed evenly, and fermented at 28°C, 150r / min for 5d. After the fermentation is completed, the mixture is sterilized at 121°C for 20min, and then cooled to room temperature, the pH of the fermentation mixture is adjusted to 6.0, papain is added, and the mixture is reacted in a water bath at 60°C for 2h, and then the pH of the fermentation mixture is adjusted to 4.5, cooled to 52°C, manganese peroxidase is added, and the mixture is reacted in a water bath at 52°C for 2h, and then the enzyme is inactivated in a boiling water bath for 10min, the alkali-treated banana leaf fragments are taken out and rinsed with clean water, and then placed in a carding machine for carding, and the fiber bundles are cut into sections, ground, cleaned, and dried to obtain banana vein fibers;
[0007] S3. Extract pineapple leaves according to the method of steps S1-S2 to obtain pineapple vein fibers, blend the banana vein fibers and pineapple vein fibers to obtain first fibers, blend polylactic acid fibers and cotton fibers to obtain second fibers, and blend the first fibers and the second fibers to obtain the light-transmitting degradable vein fiber products.
[0008] Furthermore, the PDA slant culture medium includes the following components: 200.0 g potato, 20.0 g glucose, 20.0 g agar, 5.0 g peptone, 3.0 g potassium dihydrogen phosphate, 1.5 g magnesium sulfate, and 1000.0 mL water.
[0009] Further, the fermentation mixture consists of the following components in parts by mass: 80-100 parts of alkali-treated banana leaf fragments, 1-2 parts of magnesium sulfate, 1-2 parts of potassium dihydrogen phosphate, 2-5 parts of ammonium citrate, 0.02-0.05 parts of manganese sulfate, 0.5-1 parts of potassium chloride, and 10-30 parts of Tween 80.
[0010] Furthermore, the inoculation amount of the Aspergillus oryzae spore suspension is 5%-8% of the mass of the fermentation mixture.
[0011] Furthermore, the amount of papain added is 3%-5% of the mass of the fermentation mixture.
[0012] Furthermore, the added amount of the manganese peroxidase is 5%-8% of the mass of the fermentation mixture.
[0013] Furthermore, the mass ratio of banana leaf vein fibers to pineapple leaf vein fibers in the first fibers is 1.2-2:1.
[0014] Furthermore, the mass ratio of the polylactic acid fiber to the cotton fiber in the second fiber is 1:1.2-1.5.
[0015] Furthermore, the diameter ratio of the first fiber to the second fiber is 2-3:1.
[0016] In addition, the leaf vein fibers extracted by the present invention can be used as fiber materials to be blended with other fibers to form fiber products, and can also be used to prepare leaf vein fiber handicrafts for long-term preservation, which specifically includes the following steps: replacing the banana leaves in the above step S1 with bodhi leaves without shearing, and then directly performing alkali boiling treatment, and then extracting according to the steps in S1-S2, and sealing the extracted bodhi leaf vein fibers with biological wax for long-term preservation.
[0017] The invention has the following beneficial effects: firstly, banana leaves and pineapple leaves are processed by alkali boiling to destroy the chemical bonds between pectin molecules and between pectin and cellulose in the leaves, so that the cell wall structure becomes loose, and wax, oil and some soluble impurities on the surface of the leaves are removed; then, the two are fermented by Aspergillus oryzae, and the thermal stability of the fiber product is improved by the fermentation of Aspergillus oryzae, the fiber structure becomes looser, the light transmittance of the fiber product is improved, and the molecular weight of the fiber is reduced, so that the fiber product is more easily naturally degraded; then, the fiber product is successively enzymatically hydrolyzed by papain and manganese peroxidase, Banana leaf vein fibers and pineapple leaf vein fibers were separated and extracted. Papain specifically acted on protein peptide bonds, further deeply hydrolyzed various types of proteins remaining after leaf cell fragmentation, reduced the adhesion between fibers due to protein breakage, and made the fibers easier to disperse. Manganese peroxidase could catalyze the oxidative degradation reaction of lignin, significantly reducing the degree of lignin wrapping and adhesion to the fibers, allowing the fibers to be successfully separated and extracted. The two types of leaf vein fibers treated by the above method retained light transmittance, and the fiber products obtained could be stored for a long time at room temperature and quickly degraded after being discarded. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The storage resistance test results of the fiber products prepared in various embodiments and comparative examples of the present invention are shown;
[0019] Figure 2 The degradability test results of the fiber products prepared in various embodiments and comparative examples of the present invention are shown;
[0020] Figure 3 The light transmittance test results of the fiber products prepared in the embodiments and comparative examples of the present invention are shown in FIG.
[0021] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in 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.
[0023] Unless otherwise defined, all professional and scientific terms used herein have the same meanings as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to those described herein may be applied to the present invention. The preferred implementation methods and materials described herein are for demonstration purposes only and are not intended to limit the content of this application.
[0024] The experimental methods in the following examples are conventional methods unless otherwise specified, and the experimental materials used in the following examples are purchased from commercial channels unless otherwise specified.
[0025] Example 1
[0026] A light-transmissive degradable leaf vein fiber product and a preparation method thereof, the preparation method comprising the following steps:
[0027] S1. Select mature and healthy banana leaves, wash and dry them, and cut them into banana leaf fragments with a side length of 10 cm and a width of 1.5 cm. The banana leaf fragments are completely immersed in a 10% sodium hydroxide solution, boiled at 100°C for 15 min, and then the banana leaf fragments are taken out and rinsed with water until pH = 7 to obtain alkali-treated banana leaf fragments;
[0028] S2. The Aspergillus oryzae slant was activated in PDA slant medium at 28°C for 3 days, the activated slant was rinsed with sterile water, and the Aspergillus oryzae spore suspension was obtained after filtration, and sterile water was added to adjust the concentration of the Aspergillus oryzae spore suspension to 10 6CFU / mL, the fermentation mixture consists of the following components in parts by mass: 80 parts of alkali-treated banana leaf fragments, 1 part of magnesium sulfate, 1 part of potassium dihydrogen phosphate, 2 parts of ammonium citrate, 0.02 parts of manganese sulfate, 0.5 parts of potassium chloride, and 10 parts of Tween 80. The alkali-treated banana leaf fragments and the above substances are mixed in proportion to obtain a fermentation mixture, which is placed in a fermentation device, and then the Aspergillus oryzae spore suspension (inoculation amount is 5% of the mass of the fermentation mixture) is added to the fermentation mixture, mixed evenly, and fermented at 28°C, 150r / min for 5d. The fermentation is terminated and then heated at 121°C. The mixture was sterilized at room temperature for 20 min, then cooled to room temperature, the pH of the fermentation mixture was adjusted to 6.0, papain (added in an amount of 3% of the mass of the fermentation mixture) was added, and the mixture was reacted in a water bath at 60° C. for 2 h, then the pH of the fermentation mixture was adjusted to 4.5, the mixture was cooled to 52° C., manganese peroxidase (added in an amount of 5% of the mass of the fermentation mixture) was added, the mixture was reacted in a water bath at 52° C. for 2 h, and then the enzyme was inactivated in a boiling water bath for 10 min, the alkali-treated banana leaf fragments were taken out and rinsed with clean water, and then put into a carding machine for carding, the fiber bundles were cut into sections, ground, cleaned, and dried to obtain banana leaf vein fibers;
[0029] S3. Extract pineapple leaves according to the method of step 1-2 to obtain pineapple vein fibers, blend the banana vein fibers and pineapple vein fibers at a mass ratio of 1.2:1 to obtain first fibers, blend polylactic acid fibers and cotton fibers at a mass ratio of 1:1.2 to obtain second fibers, and blend the first fibers and the second fibers (diameter ratio of 2:1) to obtain the light-transmitting degradable vein fiber products.
[0030] The PDA slant culture medium includes the following components: 200.0 g potato, 20.0 g glucose, 20.0 g agar, 5.0 g peptone, 3.0 g potassium dihydrogen phosphate, 1.5 g magnesium sulfate, and 1000.0 mL water.
[0031] Example 2
[0032] A light-transmissive degradable leaf vein fiber product and a preparation method thereof, the preparation method comprising the following steps:
[0033] S1. Select mature and healthy banana leaves, wash and dry them, and cut them into banana leaf fragments with a side length of 10 cm and a width of 1.5 cm. The banana leaf fragments are completely immersed in a 15% sodium hydroxide solution, boiled at 100°C for 40 min, and then the banana leaf fragments are taken out and rinsed with water until pH = 7 to obtain alkali-treated banana leaf fragments;
[0034] S2. The Aspergillus oryzae slant was activated in PDA slant medium at 28°C for 3 days, the activated slant was rinsed with sterile water, and the Aspergillus oryzae spore suspension was obtained after filtration, and sterile water was added to adjust the concentration of the Aspergillus oryzae spore suspension to 106 CFU / mL, the fermentation mixture consists of the following components in parts by mass: 100 parts of alkali-treated banana leaf fragments, 2 parts of magnesium sulfate, 2 parts of potassium dihydrogen phosphate, 5 parts of ammonium citrate, 0.05 parts of manganese sulfate, 1 part of potassium chloride, and 30 parts of Tween 80. The alkali-treated banana leaf fragments and the above substances are mixed in proportion to obtain a fermentation mixture, which is placed in a fermentation device, and then the Aspergillus oryzae spore suspension (inoculation amount is 8% of the mass of the fermentation mixture) is added to the fermentation mixture, mixed evenly, and fermented at 28°C, 150r / min for 5d. The fermentation is terminated and then heated at 121°C. The mixture was sterilized at room temperature for 20 min, then cooled to room temperature, the pH of the fermentation mixture was adjusted to 6.0, papain (added in an amount of 5% of the mass of the fermentation mixture) was added, and the mixture was reacted in a water bath at 60° C. for 2 h, then the pH of the fermentation mixture was adjusted to 4.5, the mixture was cooled to 52° C., manganese peroxidase (added in an amount of 8% of the mass of the fermentation mixture) was added, the mixture was reacted in a water bath at 52° C. for 2 h, and then the enzyme was inactivated in a boiling water bath for 10 min, the alkali-treated banana leaf fragments were taken out and rinsed with clean water, and then put into a carding machine for carding, the fiber bundles were cut into segments, ground, cleaned, and dried to obtain banana leaf vein fibers;
[0035] S3. Extract pineapple leaves according to the method of step 1-2 to obtain pineapple vein fibers, blend the banana vein fibers and pineapple vein fibers at a mass ratio of 2:1 to obtain first fibers, blend polylactic acid fibers and cotton fibers at a mass ratio of 1:1.5 to obtain second fibers, and blend the first fibers and the second fibers (diameter ratio of 3:1) to obtain the light-transmitting degradable vein fiber products.
[0036] The PDA slant culture medium includes the following components: 200.0 g potato, 20.0 g glucose, 20.0 g agar, 5.0 g peptone, 3.0 g potassium dihydrogen phosphate, 1.5 g magnesium sulfate, and 1000.0 mL water.
[0037] Example 3
[0038] A light-transmissive degradable leaf vein fiber product and a preparation method thereof, the preparation method comprising the following steps:
[0039] S1. Select mature and healthy banana leaves, wash and dry them, and cut them into banana leaf fragments with a side length of 10 cm and a width of 1.5 cm. The banana leaf fragments are completely immersed in a 12% sodium hydroxide solution, boiled at 100°C for 25 minutes, and then the banana leaf fragments are taken out and rinsed with water until pH = 7 to obtain alkali-treated banana leaf fragments;
[0040] S2. The Aspergillus oryzae slant was activated in PDA slant medium at 28°C for 3 days, the activated slant was rinsed with sterile water, and the Aspergillus oryzae spore suspension was obtained after filtration, and sterile water was added to adjust the concentration of the Aspergillus oryzae spore suspension to 10 6 CFU / mL, the fermentation mixture consists of the following components in parts by mass: 90 parts of alkali-treated banana leaf fragments, 1.5 parts of magnesium sulfate, 1.5 parts of potassium dihydrogen phosphate, 3 parts of ammonium citrate, 0.03 parts of manganese sulfate, 0.7 parts of potassium chloride, and 20 parts of Tween 80. The alkali-treated banana leaf fragments and the above substances are mixed in proportion to obtain a fermentation mixture, which is placed in a fermentation device, and then the Aspergillus oryzae spore suspension (inoculation amount is 6% of the mass of the fermentation mixture) is added to the fermentation mixture, mixed evenly, and fermented at 28°C, 150r / min for 5d. The fermentation is terminated at 12 Sterilize at 1°C for 20 min, then cool to room temperature, adjust the pH of the fermentation mixture to 6.0, add papain (the amount added is 4% of the mass of the fermentation mixture), react in a water bath at 60°C for 2 h, then adjust the pH of the fermentation mixture to 4.5, cool to 52°C, add manganese peroxidase (the amount added is 6% of the mass of the fermentation mixture), react in a water bath at 52°C for 2 h, then inactivate the enzyme in a boiling water bath for 10 min, take out the alkali-treated banana leaf fragments, rinse them with clean water, and then put them into a carding machine for carding, cut the fiber bundles into sections, grind, wash, and dry them to obtain banana leaf vein fibers;
[0041] S3. Extract pineapple leaves according to the method of step 1-2 to obtain pineapple vein fibers, blend the banana vein fibers and pineapple vein fibers at a mass ratio of 1.6:1 to obtain first fibers, blend polylactic acid fibers and cotton fibers at a mass ratio of 1:1.3 to obtain second fibers, and blend the first fibers and the second fibers (diameter ratio of 2.5:1) to obtain the light-transmitting degradable vein fiber products.
[0042] The PDA slant culture medium includes the following components: 200.0 g potato, 20.0 g glucose, 20.0 g agar, 5.0 g peptone, 3.0 g potassium dihydrogen phosphate, 1.5 g magnesium sulfate, and 1000.0 mL water.
[0043] Comparative Example 1
[0044] The banana leaves and pineapple leaves in this comparative example were fermented only with Aspergillus oryzae without being hydrolyzed with papain and manganese peroxidase, and the rest were the same as in Example 3.
[0045] Test Example 1
[0046] Storage stability test of fiber products
[0047] The fiber products prepared in the examples and comparative examples were stored at a temperature of (20±2)°C and a relative humidity of (65±3)% for 3 months. The tensile properties of the textile fabrics before and after storage were measured by the strip method in GB / T 3923.1-2013 "Tensile Properties of Textile Fabrics". The maximum tensile force at break was recorded, and the tensile strength retention rate was calculated to evaluate the storage resistance of the fiber products. The results are shown in Table 1. Figure 1 .
[0048] From the storage resistance test results, Examples 1-3 performed better, and the reason is related to the preparation process of the present invention. First, the alkali boiling step destroys the chemical bonds between pectin molecules and between pectin and cellulose in the leaves, making the cell wall structure loose, so that the fibers can be better formed during subsequent processing, and during storage, this relatively loose and ordered fiber structure is more stable and not easily broken or deformed due to environmental factors, laying the foundation for maintaining tensile strength. Aspergillus oryzae fermentation further improves the thermal stability of the fiber products. The improvement of thermal stability means that the fiber structure is not easily destroyed under normal ambient temperature fluctuations, and the intermolecular forces can remain relatively stable, so that the physical properties of the fiber products during storage are guaranteed. Papain specifically hydrolyzes various types of proteins remaining after leaf cell fragmentation, reducing the unstable structure formed by protein adhesion between fibers, making the fiber bundles more regular, independent, and better dispersed. Manganese peroxidase catalyzes the oxidative degradation reaction of lignin, significantly reducing the degree of lignin wrapping and adhesion to the fibers, which is not only conducive to processing, but also can effectively avoid fiber structure degradation caused by factors such as lignin aging and deterioration during storage.
[0049] Test Example 2
[0050] Degradability testing of fiber products
[0051] The biodegradability of the fiber products prepared in each embodiment and comparative example within 90 days was determined by the method of GB / T 33616-2017. The test results are shown in Figure 2 .
[0052] Examples 1-3 have outstanding performance in terms of degradability. This is because the initial step of alkali boiling removes wax, oil and some soluble impurities on the surface of the leaves. Aspergillus oryzae fermentation makes the fiber structure loose, increases the surface area of microorganisms contacting the fiber, and reduces the molecular weight of the fiber, making it easier for microorganisms to decompose the fiber. Papain deeply hydrolyzes residual protein. Protein is a difficult component to decompose in the biodegradation process. After hydrolysis, microorganisms can more easily decompose the fiber products. Manganese peroxidase degrades lignin and can also promote microbial decomposition. Therefore, the fiber products of Examples 1-3 have a higher biodegradability rate within 90 days. The fiber products prepared by the present invention are more in line with the current environmental protection requirements for rapid degradation of materials and can effectively reduce the environmental burden.
[0053] Test Example 3
[0054] Light transmittance testing of fiber products
[0055] The light transmittance of the fiber products prepared in each embodiment and comparative example was measured by the method of GB / T 36983-2024. The light transmittance T = E1 / E0×100, where E0 is the illuminance without a sample and E1 is the illuminance with a sample. The test results are shown in Figure 3 .
[0056] from Figure 3 It can be seen that Examples 1-3 have a higher light transmittance, which is due to the alkali boiling step of the present invention which removes wax and oil on the leaf surface, making the fiber surface smoother and reducing diffuse reflection of light. Aspergillus oryzae fermentation makes the fiber structure loose, and the enzymatic hydrolysis of papain and manganese peroxidase optimizes the internal structure of the fiber, removing macromolecular substances in the fiber that may affect light transmittance and messy fiber adhesions.
[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
[0058] The present invention and its implementation methods are described above, which is not restrictive. The drawings are only one of the implementation methods of the present invention, and the actual application is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.
Claims
1. A method for preparing a light-transmitting degradable leaf vein fiber product, characterized in that: The following steps are involved: S1. Select mature and healthy banana leaves, wash and dry them, and cut them into banana leaf fragments with a side length of 10 cm and a width of 1.5 cm. The banana leaf fragments are completely immersed in a 10-15% sodium hydroxide solution, boiled at 100°C for 15-40 minutes, and then the banana leaf fragments are taken out and rinsed with water until pH = 7 to obtain alkali-treated banana leaf fragments; S2. The Aspergillus oryzae slant was activated in PDA slant medium at 28°C for 3 days, the activated slant was rinsed with sterile water, and the Aspergillus oryzae spore suspension was obtained after filtration, and sterile water was added to adjust the concentration of the Aspergillus oryzae spore suspension to 10 6 CFU / mL, the alkali-treated banana leaf fragments are mixed with magnesium sulfate, potassium dihydrogen phosphate, ammonium citrate, manganese sulfate, potassium chloride, and Tween 80 in proportion to obtain a fermentation mixture, which is placed in a fermentation device, and then the Aspergillus oryzae spore suspension is added to the fermentation mixture, mixed evenly, and fermented at 28°C, 150r / min for 5d. After the fermentation is completed, the mixture is sterilized at 121°C for 20min, and then cooled to room temperature, the pH of the fermentation mixture is adjusted to 6.0, papain is added, and the mixture is reacted in a water bath at 60°C for 2h, and then the pH of the fermentation mixture is adjusted to 4.5, cooled to 52°C, manganese peroxidase is added, and the mixture is reacted in a water bath at 52°C for 2h, and then the enzyme is inactivated in a boiling water bath for 10min, the alkali-treated banana leaf fragments are taken out and rinsed with clean water, and then placed in a carding machine for carding, and the fiber bundles are cut into sections, ground, cleaned, and dried to obtain banana vein fibers; S3. Extract pineapple leaves according to the method of steps S1-S2 to obtain pineapple vein fibers, blend the banana vein fibers and pineapple vein fibers to obtain first fibers, blend polylactic acid fibers and cotton fibers to obtain second fibers, and blend the first fibers and the second fibers to obtain the light-transmitting degradable vein fiber products.
2. The method for preparing a light-transmitting biodegradable leaf vein fiber product according to claim 1, characterized in that: The PDA slant culture medium includes the following components: 200.0 g potato, 20.0 g glucose, 20.0 g agar, 5.0 g peptone, 3.0 g potassium dihydrogen phosphate, 1.5 g magnesium sulfate, and 1000.0 mL water.
3. The method for preparing a light-transmitting biodegradable leaf vein fiber product according to claim 2, characterized in that: The fermentation mixture consists of the following components in parts by mass: 80-100 parts of alkali-treated banana leaf fragments, 1-2 parts of magnesium sulfate, 1-2 parts of potassium dihydrogen phosphate, 2-5 parts of ammonium citrate, 0.02-0.05 parts of manganese sulfate, 0.5-1 parts of potassium chloride and 10-30 parts of Tween 80.
4. The method for preparing a light-transmitting degradable leaf vein fiber product according to claim 3, characterized in that: The inoculation amount of the Aspergillus oryzae spore suspension is 5%-8% of the mass of the fermentation mixture.
5. The method for preparing a light-transmitting biodegradable leaf vein fiber product according to claim 4, characterized in that: The added amount of papain is 3%-5% of the mass of the fermentation mixture.
6. The method for preparing a light-transmitting biodegradable leaf vein fiber product according to claim 5, characterized in that: The added amount of the manganese peroxidase is 5%-8% of the mass of the fermentation mixture.
7. The method for preparing a light-transmitting biodegradable leaf vein fiber product according to claim 6, characterized in that: The mass ratio of banana leaf vein fibers to pineapple leaf vein fibers in the first fibers is 1.2-2:
1.
8. The method for preparing a light-transmitting biodegradable leaf vein fiber product according to claim 7, characterized in that: The mass ratio of the polylactic acid fiber to the cotton fiber in the second fiber is 1:1.2-1.
5.
9. The method for preparing a light-transmitting biodegradable leaf vein fiber product according to claim 8, characterized in that: The diameter ratio of the first fiber to the second fiber is 2-3:
1.
10. The light-transmissive biodegradable leaf vein fiber product according to any one of claims 1 to 9, characterized in that: The product is prepared by the preparation method.