A Ganoderma lucidum-based leather and its preparation method

Abstract

The present invention provides a Ganoderma leather and a preparation method thereof, belonging to the technical field of leather-like materials. Instead of using animal skins as the raw material for leather, the present invention utilizes Ganoderma mycelium as the raw material and adopts a water-soluble culture medium to enable the asexual reproduction of Ganoderma mycelium, facilitating the acquisition of Ganoderma composite biomaterials in the later stage, effectively shortening the mycelium culture cycle, improving production efficiency, and being more easily industrialized. The present invention adds a composite additive when the Ganoderma mycelium grows to form a growth advantage, which is conducive to the cross-linking, embedding, and adsorption of the mycelium and the added additive, promoting the orderly growth of Ganoderma mycelium to form a Ganoderma composite biomaterial, which is beneficial to the further preparation of Ganoderma leather. The present invention combines the obtained Ganoderma composite biomaterial with silk fiber, which can promote the blending and compounding of the two, significantly improving the tensile strength, ductility, etc. of Ganoderma leather, further strengthening the index values of leather-like material properties to reach or even exceed the characteristic indexes of leather.

Description

Technical Field

[0001] The present invention belongs to the technical field of leather-like materials, and particularly relates to a ganoderma leather-like material and a preparation method thereof. Background Art

[0002] Leather is extremely commonly used in daily life, related to all aspects of people's lives, and has a huge market demand. However, on the one hand, the production of leather requires a large amount of animal skin resources and a huge demand for the slaughter of animals. On the other hand, the production process of leather involves processes such as soaking, cleaning, removing residual meat, removing grease, depilation, tanning, dyeing, and finishing of animal skins. It is very difficult to treat production scraps, waste materials, and sewage, causing great pollution to the environment. Therefore, there is an urgent need in this field to provide a leather-like material that does not rely on animal skins as raw materials for leather.

[0003] Ganoderma belongs to large fungi, and has the advantages of fast growth rate, easy cultivation, mature fermentation process, and easy regulation of fermentation process. At present, there are few relevant studies on using ganoderma as a raw material for leather-like materials. Moreover, in the field of ganoderma leather-like materials with little research, the solid fermentation method is mostly used. In the later stage of fermentation, it is difficult to separate the solid medium from the ganoderma fermentation mycelium, having the defects of long cycle, low production efficiency, and difficult industrial production. In addition, the existing ganoderma leather-like materials are not as good as animal leather in terms of ductility, tensile strength, abrasion resistance, softness, air permeability, heat resistance, etc. Therefore, there is an urgent need in this field to provide a preparation method for ganoderma leather-like materials that is simple in method, short in production cycle, easy for industrial production, and superior to animal leather in all aspects of performance. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a preparation method for ganoderma leather-like materials, which has the advantages of simple method, short production cycle, and easy industrial production, and the ganoderma leather-like materials prepared have superior performance in all aspects compared to animal leather.

[0005] In order to achieve the above-mentioned invention purpose, the present invention provides the following technical solutions:

[0006] The present invention provides a preparation method for ganoderma leather-like materials, including the following steps: When the wet weight of the mycelium of ganoderma lucidum strains reaches more than 12% after liquid fermentation, remove the supernatant, and mix the remaining fermentation material with a composite auxiliary agent to obtain a composite auxiliary agent mixed solution; perform liquid fermentation on the composite auxiliary agent mixed solution. When the wet weight of the ganoderma mycelium composite material reaches the maximum value, remove the supernatant to obtain a ganoderma composite biological material; mix and press the ganoderma composite biological material with silk fibers to obtain ganoderma leather-like materials; the composite auxiliary agent includes the following components in weight percentage: 15-25% of water-soluble chitosan, 20-30% of genipin acetic acid solution, 2-6% of polyamide, and the balance is water.

[0007] Preferably, the water-soluble culture medium used for the liquid fermentation comprises the following components in weight percentage: 2-3% of water-soluble corn starch, 1.5-3% of glucose, 0.1-0.2% of potassium dihydrogen phosphate, 0.05-0.1% of magnesium sulfate, 0.2-0.4% of yeast powder, 0.05-0.1% of soybean oil, and the balance is water.

[0008] Preferably, the temperature of the liquid fermentation is 25-26 °C.

[0009] Preferably, the weight ratio of the fermentation material to the composite auxiliary is 1:0.3-0.7.

[0010] Preferably, the degree of deacetylation of the water-soluble chitosan is 80%-90%, and the concentration of the genipin acetic acid solution is 10%-15%.

[0011] Preferably, the weight ratio of the Ganoderma lucidum composite biomaterial to the silk fiber is 20:0.5-1.

[0012] Preferably, the specific method for mixing and pressing the Ganoderma lucidum composite biomaterial and the silk fiber is to lay the Ganoderma lucidum composite biomaterial layer and the silk fiber layer alternately and then press.

[0013] Preferably, the thickness of each layer of the Ganoderma lucidum composite biomaterial is 0.1-0.3 cm.

[0014] Preferably, after mixing and pressing the Ganoderma lucidum composite biomaterial and the silk fiber, it further includes the steps of washing, pressing, drying, finishing, and coating.

[0015] The present invention also provides a Ganoderma lucidum-based leather prepared by the above preparation method.

[0016] The beneficial effects of the present invention:

[0017] The present invention does not use animal skins as the raw material for leather, but uses Ganoderma lucidum mycelia as the raw material, and uses a water-soluble culture medium to enable the asexual reproduction of Ganoderma lucidum mycelia. The designed water-soluble culture in the present invention is convenient for obtaining the Ganoderma lucidum composite biomaterial later, and can ensure that there is no culture medium residue in the Ganoderma lucidum composite biomaterial without complicated separation steps. Moreover, the method of liquid fermentation in the present invention can effectively shorten the mycelium culture period, improve production efficiency, and is more easily industrialized.

[0018] The present invention adds a composite auxiliary when the Ganoderma lucidum mycelia grow to form a growth advantage, which is beneficial to the cross-linking, embedding, and adsorption of the mycelia and the added auxiliary, promotes the orderly growth of Ganoderma lucidum mycelia, forms a Ganoderma lucidum composite biomaterial, and is beneficial to the further preparation of Ganoderma lucidum-based leather.

[0019] The present invention combines the obtained Ganoderma lucidum composite biomaterial with silk fibers, which can promote the blending and compounding of the two, significantly improve the tensile strength, ductility, etc. of Ganoderma lucidum - like leather, further enhance the index values of the leather - like properties, so as to achieve even higher than the characteristic indexes of leather. Detailed implementation mode

[0020] The present invention provides a method for preparing Ganoderma lucidum - like leather, which includes the following steps: When the liquid fermentation of Ganoderma lucidum strains reaches a mycelium wet weight of more than 12%, remove the supernatant, and mix the remaining fermentation material with a composite auxiliary agent to obtain a composite auxiliary agent mixed solution; perform liquid fermentation on the composite auxiliary agent mixed solution, and when the wet weight of the Ganoderma lucidum mycelium composite material reaches the maximum value, remove the supernatant to obtain a Ganoderma lucidum composite biomaterial; mix and press the Ganoderma lucidum composite biomaterial with silk fibers to obtain Ganoderma lucidum - like leather; the composite auxiliary agent includes the following components in weight percentage: 15 - 25% of water - soluble chitosan, 20 - 30% of genipin acetic acid solution, 2 - 6% of polyamide, and the balance is water.

[0021] In the present invention, the Ganoderma lucidum strain is preferably Ganoderma sichuanense, and more preferably Ganoderma sichuanense Tibetan Ganoderma No. 2 (the preservation number is CGMCC NO.21936). In the present invention, the water - soluble culture medium used for liquid fermentation preferably includes the following components in weight percentage: 2 - 3% of water - soluble corn starch, 1.5 - 3% of glucose, 0.1 - 0.2% of potassium dihydrogen phosphate, 0.05 - 0.1% of magnesium sulfate, 0.2 - 0.4% of yeast powder, 0.05 - 0.1% of soybean oil, and the balance is water. The present invention has no special limitation on the specific sources of the components in the water - soluble culture medium, and conventional commercially available products in the art can be used. In the present invention, the temperature of the liquid fermentation is preferably 25 - 26°C. The cultivation of Ganoderma lucidum mycelium has very strict requirements for the culture medium, and different culture medium formulations have a great impact on the growth of Ganoderma lucidum mycelium. The growth of Ganoderma lucidum mycelium requires sufficient and balanced nutrient elements, such as appropriate carbon - nitrogen ratio, inorganic salts, trace elements, etc. Different culture medium formulations are targeted at different target products. The water - soluble culture medium defined in the present invention can cultivate strong Ganoderma lucidum mycelium and obtain a high mycelium yield. The method of liquid fermentation adopted in the present invention can effectively shorten the mycelium culture period and improve production efficiency. In addition, since there is no obstacle to the separation of the later - stage Ganoderma lucidum fermentation mycelium from the culture medium in the liquid fermentation method of the present invention, pure Ganoderma lucidum mycelium can be obtained by the simplest method of removing the supernatant, so the method of the present invention is more easily industrialized. The present invention has no special limitation on the specific number of liquid fermentations, which is determined according to production needs. It can choose first - stage fermentation culture, or second - stage fermentation or multi - stage fermentation above the second - stage, as long as the water - soluble culture medium used for fermentation and the fermentation temperature are the same as above.

[0022] In the present invention, the method for measuring the wet weight of the mycelium is as follows: Sampling from the fermenter and weighing to obtain the original weight, centrifuging in a high-speed centrifuge to obtain the true weight of the mycelium, and [(true weight of the mycelium / original weight) × 100%] is the wet weight of the mycelium. In the present invention, when the wet weight of the mycelium reaches the maximum value, it indicates that the growth of Ganoderma lucidum mycelium has formed a growth advantage, and then a composite additive is added, which is beneficial for the cross-linking, embedding, and adsorption of the mycelium and the added additive, promotes the orderly growth of Ganoderma lucidum mycelium, forms a Ganoderma lucidum composite biomaterial, and is beneficial for the further preparation of Ganoderma lucidum-based leather. The present invention has no special limitation on the specific value of the maximum wet weight of the mycelium, which depends on the specific conditions of the fermentation raw materials and fermentation volume, and samples are regularly taken and detected during the fermentation process until the maximum value in this fermentation process is reached. In the present invention, the weight ratio of the fermentation material to the composite additive is preferably 1:0.3 - 0.7, more preferably 1:0.4 - 0.6. In the present invention, the composite additive preferably comprises the following components in weight percentage: 18 - 22% of water-soluble chitosan, 23 - 26% of genipin acetic acid solution, 3 - 5% of polyamide, and the balance is water. The deacetylation degree of the water-soluble chitosan is preferably 80% - 90%, more preferably 82% - 86%, and the concentration of the genipin acetic acid solution is preferably 10% - 15%, more preferably 10% - 12%. The present invention has no special limitation on the specific sources of the components in the composite additive, and conventional commercially available products in the art can be used.

[0023] The water-soluble culture medium and the specific fermentation temperature used for liquid fermentation of the composite additive mixture in the present invention are the same as above and will not be elaborated here. In the present invention, the method for measuring the wet weight of the Ganoderma lucidum mycelium composite material is as follows: Sampling from the fermenter and weighing to obtain the original weight, centrifuging in a high-speed centrifuge to obtain the true weight of the Ganoderma lucidum mycelium composite material, and [(Ganoderma lucidum mycelium composite material / original weight) × 100%] is the wet weight of the Ganoderma lucidum mycelium composite material.

[0024] In the present invention, the weight ratio of the Ganoderma lucidum composite biomaterial to the silk fiber is preferably 20:0.5 - 1, and more preferably 20:0.6 - 0.8. There is no special limitation on the specific source of the silk fiber in the present invention. The specific method of mixing and pressing the Ganoderma lucidum composite biomaterial and the silk fiber is preferably to lay the Ganoderma lucidum composite biomaterial layer and the silk fiber layer alternately and then press. In the present invention, the Ganoderma lucidum composite biomaterial can be laid first, or the silk fiber can be laid first, as long as it is ensured that the two material layers are stacked in sequence. In the present invention, the more preferred specific method of mixing and pressing the Ganoderma lucidum composite biomaterial and the silk fiber is to lay a layer of Ganoderma lucidum composite biomaterial first, and then lay a single layer of silk fiber (the thickness can be almost ignored) on it; then lay a layer of Ganoderma lucidum composite biomaterial on it, and then lay a single layer of silk fiber on it, and so on in a sandwich structure, forming a sandwich composite body of four layers of Ganoderma lucidum composite biomaterial and three layers of single layer of silk fiber, and then press. In the present invention, the thickness of each layer of Ganoderma lucidum composite biomaterial is preferably 0.1 - 0.3 cm, and more preferably 0.15 - 0.25 cm. In the present invention, the thickness of each layer of silk fiber is very thin and can be almost ignored.

[0025] In the present invention, after mixing and pressing the Ganoderma lucidum composite biomaterial and the silk fiber, preferably, it further includes the steps of washing, pressing, drying, finishing, and coating. There is no special limitation on the specific operation methods of the above steps in the present invention, and the conventional methods in the art can be adopted.

[0026] The present invention also provides a Ganoderma lucidum - like leather prepared by the above - mentioned preparation method.

[0027] The technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0028] In the following embodiments, unless otherwise specified, all are conventional methods.

[0029] In the following embodiments, the materials, reagents, etc. used, unless otherwise specified, can all be obtained from commercial channels.

[0030] Example 1

[0031] Ganoderma lucidum strain cultivation: Take Ganoderma lucidum strain and cultivate it in a strain culture medium (PDA medium) at 25 - 26°C for 20 days; Shaking flask cultivation: Take 0.5 - 1.0 square centimeters of Ganoderma lucidum strain (slant or plate) from the strain culture medium and put it into a shaking flask liquid medium (PDA medium without agar), and cultivate it on a shaker at 25 - 26°C; Aspirate all the culture materials after shaking flask cultivation into a sterilized seed tank of a water-soluble medium under negative pressure (the formula composition of the water-soluble medium (weight percentage) is: water-soluble corn starch 2%, glucose 1.5%, potassium dihydrogen phosphate 0.1%, magnesium sulfate 0.05%, yeast powder 0.2%, soybean oil 0.05%, and the balance is water), stir with air flow, ventilation rate 1:1, and cultivate in the seed tank at 25 - 26°C. Keep the temperature at 25 - 26°C, and aspirate the culture materials after seed tank cultivation into a sterilized fermentation tank of a water-soluble medium under negative pressure (the formula composition of the water-soluble medium (weight percentage) is: water-soluble corn starch 2%, glucose 1.5%, potassium dihydrogen phosphate 0.1%, magnesium sulfate 0.05%, yeast powder 0.2%, soybean oil 0.05%, and the balance is water), stir with air flow, ventilation rate 1:1, and carry out fermentation cultivation. During the fermentation process, sample and detect regularly. When it is detected that the wet weight of the mycelium reaches 13.6%, under a 1000-fold microscope, the Ganoderma lucidum mycelium has no bud heads and clamp connections, the mycelium is thick and strong, the staining is significant, the protoplasm of the mycelium has no agglutination, and the mycelium has no autolysis phenomenon; the pH value of the medium is 3.6.

[0032] Example 2

[0033] The difference from Example 1 is that the formula composition of the water-soluble medium (weight percentage) is: water-soluble corn starch 3%, glucose 3%, potassium dihydrogen phosphate 0.2%, magnesium sulfate 0.1%, yeast extract 0.4%, soybean oil 0.1%, and the balance is water, and the rest are the same as Example 1. During the fermentation process, sample and detect regularly. When it is detected that the wet weight of the mycelium reaches 20.2%, under a 1000-fold microscope, the Ganoderma lucidum mycelium has no bud heads and clamp connections, the mycelium is thick and strong, the staining is significant, the protoplasm of the mycelium has no agglutination, and the mycelium has no autolysis phenomenon; the pH value of the medium is 3.2.

[0034] Example 3

[0035] The difference from Example 1 is that the formula composition of the water-soluble medium (weight percentage) is: water-soluble corn starch 2.5%, glucose 2.25%, potassium dihydrogen phosphate 0.15%, magnesium sulfate 0.075%, yeast powder 0.3%, soybean oil 0.075%, and the balance is water, and the rest are the same as Example 1. During the fermentation process, sample and detect regularly. When it is detected that the wet weight of the mycelium reaches 16.5%, under a 1000-fold microscope, the Ganoderma lucidum mycelium has no bud heads and clamp connections, the mycelium is thick and strong, the staining is significant, the protoplasm of the mycelium has no agglutination, and the mycelium has no autolysis phenomenon; the pH value of the medium is 3.8.

[0036] Comparing Examples 1 - 3, it can be seen that in Example 2, the Ganoderma lucidum mycelium grows most vigorously, with the highest mycelium amount and the lowest pH value. The mycelium amount and pH value can intuitively reflect the growth of Ganoderma lucidum mycelium, that is, it reflects the ability of Ganoderma lucidum to utilize the nutrients in the culture medium to synthesize mycelium, as well as the ability to synthesize secondary metabolites. Therefore, the water-soluble culture medium formula of Example 2 is the preferred formula.

[0037] Example 4

[0038] When the wet weight of the mycelium in Example 2 reached 20.2%, the supernatant was removed, and the remaining fermented material was mixed with the composite auxiliary agent according to a weight ratio of 1:0.5 to obtain a composite auxiliary agent mixture; the composite auxiliary agent mixture was subjected to liquid fermentation (the specific liquid fermentation process (the culture medium used for fermentation, fermentation temperature, and fermentation times) was the same as in Example 1), with air flow stirring, a ventilation rate of 1:1, cultured for 2 hours, then the air flow stirring was stopped, and static culture was carried out for 4 hours. When the wet weight of the Ganoderma lucidum mycelium composite material reached the maximum value, the supernatant was removed to obtain the Ganoderma lucidum composite biological material.

[0039] The above composite auxiliary agent is composed of the following components according to weight percentage: water-soluble chitosan (deacetylation degree 85%) 15%, genipin acetic acid solution (concentration 10%) 20%, polyamide 2%, and the balance is water.

[0040] During the fermentation process, samples were taken regularly for detection. It was detected that the highest wet weight of the Ganoderma lucidum mycelium composite material reached 37.7%. The fermented culture material was observed under a 1000-fold microscope, and the Ganoderma lucidum mycelium was cross-linked with the composite auxiliary agent, and the cross-linking was dense, evenly distributed, the mycelium was orderly, and the warp and weft were distinct; the pH value of the fermented culture material was 3.3.

[0041] Example 5

[0042] The difference from Example 4 is that the composite auxiliary agent is composed of the following components according to weight percentage: water-soluble chitosan (deacetylation degree 85%) 20%, genipin acetic acid solution (concentration 10%) 25%, polyamide 4%, and the balance is water. Air flow stirring, a ventilation rate of 1:1, cultured for 3 hours, then the air flow stirring was stopped, and static culture was carried out for 5 hours. The rest was the same as in Example 4.

[0043] During the fermentation process, samples were taken regularly for detection. It was detected that the highest wet weight of the Ganoderma lucidum mycelium composite material reached 53.6%. The fermented culture material was observed under a 1000-fold microscope, and the Ganoderma lucidum mycelium was cross-linked with the composite auxiliary agent, and the cross-linking was dense, evenly distributed, the mycelium was orderly, and the warp and weft were distinct; the pH value of the fermented culture material was 3.0.

[0044] Example 6

[0045] The difference from Example 4 is that the composite auxiliary agent consists of the following components according to weight percentage: 25% of water-soluble chitosan (deacetylation degree 85%), 30% of genipin acetic acid solution (concentration 10%), 6% of polyamide, and the balance is water. Stir with air flow, ventilation ratio 1:1, cultivate for 4 hours, then stop air flow stirring and statically cultivate for 6 hours. The rest is the same as in Example 4.

[0046] Samples were regularly taken and detected during the fermentation process. It was detected that the highest wet weight of the Ganoderma lucidum mycelium composite material reached 55.2%. The fermentation culture material was observed under a 1000-fold microscope. The Ganoderma lucidum mycelium was crosslinked with the composite auxiliary agent, and the crosslinking was dense, evenly distributed, the mycelium was orderly, and the warp and weft were distinct; the pH value of the fermentation culture material was 3.1.

[0047] By comparing Examples 4 - 6, it can be found that Example 5 is the preferred scheme. Although the crosslinking effect, the wet weight of the Ganoderma lucidum mycelium composite material in Example 6 is similar to that in Example 5, and even the wet weight of the Ganoderma lucidum mycelium composite material is slightly higher than that in Example 5. However, upon analysis, the reason is that the composite auxiliary agent in Example 6 is excessive, and the composite auxiliary agent that has not undergone crosslinking reaction and adsorption filling reaction is free in the fermentation material, slightly affecting the wet weight of the Ganoderma lucidum mycelium composite material. Considering that excessive use of the composite auxiliary agent will cause waste and post-treatment costs, Example 5 is the preferred scheme.

[0048] Example 7

[0049] Lay a layer of Ganoderma lucidum composite biomaterial with a thickness of 0.3 cm in a mold container, and lay a layer of silk fiber flat on it; then lay another layer of Ganoderma lucidum composite biomaterial with a thickness of 0.3 cm on it, and lay another layer of silk fiber on it, and so on for sandwich laying, forming a sandwich composite of four layers of Ganoderma lucidum composite biomaterial and three layers of single-layer silk fiber, and press for 6 hours at 0.1 Mpa.

[0050] After demolding, soak and rinse the pressed Ganoderma lucidum - like leather in pure water in a container 3 times, 5 minutes each time, and drain. Press it into semi - finished products of different specifications according to requirements, and the working pressure is 2.5 - 3.0 Mpa. Carry out hot air drying at 80°C for 12 hours. During the drying process, flatten and trim the deformation, curling of the edges, and curling of the corners. Carry out finishing according to needs.

[0051] Compare the quality indexes of the obtained Ganoderma lucidum - like leather with those of the yellow cattle top - layer cowhide, and the results are shown in Table 1 below.

[0052] Table 1 Comparison of quality indexes between Ganoderma lucidum mycelium - based leather and yellow cattle top - layer cowhide

[0053]

[0054]

[0055] Example 8

[0056] The difference from Example 4 is that the degree of deacetylation of water-soluble chitosan in the composite auxiliary agent is 80%, and the concentration of genipin acetic acid solution is 15%. The rest are the same as in Example 4, and a Ganoderma lucidum composite biomaterial is obtained.

[0057] Lay a layer with a thickness of 0.1 cm of the obtained Ganoderma lucidum composite biomaterial in a mold container, and lay a layer of silk fiber flat on it; then lay another layer of Ganoderma lucidum composite biomaterial with a thickness of 0.1 cm on it, and lay another layer of silk fiber on it, and so on for sandwich laying to form a sandwich composite of four layers of Ganoderma lucidum composite biomaterial and three layers of single-layer silk fiber, and press for 6 hours at 0.1 Mpa.

[0058] After demolding, soak and rinse the pressed Ganoderma lucidum leather in pure water in a container 3 times, 5 minutes each time, and drain. Press into semi-finished products of different specifications according to requirements, and the working pressure is 2.5 - 3.0 Mpa. Adopt hot air drying at 80 °C for 12 hours. During the drying process, flatten and trim deformations, curling edges, curling corners, etc. Perform finishing according to needs.

[0059] The above is only the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method for preparing Ganoderma lucidum leather, characterized in that, It includes the following steps: When the wet weight of Ganoderma lucidum spawn reaches more than 12% after liquid fermentation, remove the supernatant, and mix the remaining fermented material with a composite auxiliary agent to obtain a composite auxiliary agent mixture; perform liquid fermentation on the composite auxiliary agent mixture. When the wet weight of the Ganoderma lucidum mycelium composite material reaches the maximum value, remove the supernatant to obtain a Ganoderma lucidum composite biomaterial; mix and press the Ganoderma lucidum composite biomaterial with silk fibers to obtain Ganoderma lucidum-like leather; the composite auxiliary agent includes components with the following weight percentages: 15-25% of water-soluble chitosan, 20-30% of genipin acetic acid solution, 2-6% of polyamide, and the balance is water; The water-soluble culture medium used for the liquid fermentation includes components with the following weight percentages: 2-3% of water-soluble corn starch, 1.5-3% of glucose, 0.1-0.2% of potassium dihydrogen phosphate, 0.05-0.1% of magnesium sulfate, 0.2-0.4% of yeast powder, 0.05-0.1% of soybean oil, and the balance is water.

2. The preparation method according to claim 1, wherein The temperature of the liquid fermentation is 25-26°C.

3. The preparation method according to claim 1, characterized in that, The weight ratio of the fermented material to the composite auxiliary agent is 1:0.3-0.

7.

4. The preparation method according to claim 1, characterized in that, The degree of deacetylation of the water-soluble chitosan is 80%-90%, and the concentration of the genipin acetic acid solution is 10%-15%.

5. The preparation method according to claim 1, characterized in that, The weight ratio of the Ganoderma lucidum composite biomaterial to the silk fiber is 20:0.5-1.

6. The preparation method according to claim 1, characterized in that, The specific method for mixing and pressing the Ganoderma lucidum composite biomaterial with silk fibers is to lay the Ganoderma lucidum composite biomaterial layer and the silk fiber layer alternately and then press.

7. The preparation method according to claim 6, characterized in that, The thickness of each layer of the Ganoderma lucidum composite biomaterial is 0.1-0.3 cm.

8. The preparation method according to claim 1, wherein, After mixing and pressing the Ganoderma lucidum composite biomaterial with silk fibers, it also includes the steps of washing, pressing, drying, finishing, and coating.

9. Ganoderma lucidum-like leather prepared by the preparation method according to any one of claims 1-8.

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