Filamentous culture film for laver culture and method for culturing filaments using same

Abstract

The present invention relates to a protonema culture film for culturing laver and a protonema culture method using the same, and more particularly, to a culture film and a method for effectively culturing protonema for culturing laver using the same, the culture film comprising: a base film formed in a rectangular shape having a prescribed width; and a coating base film comprising a coating film formed on the upper surface of the base film, the base film and the coating film comprising a biodegradable material. According to the present invention, the raw material supply problem does not exist, and the labor cost burden does not exist, such that the advantages of low manufacturing cost, easy transportation, excellent efficiency relative to the culture area, easy fixation on the sea sedge raft frame, and no environmental pollution are provided.

Description

Technical Field

[0001] This invention relates to a filamentous culture membrane for laver cultivation and a method for filamentous culture using the same. More specifically, it relates to a filamentous culture membrane for laver cultivation and a method for filamentous culture using the same, wherein the culture membrane uses a base membrane and a coating membrane, which are biodegradable materials, to replace existing oyster shells, thus making it easy to handle, eliminating environmental pollution problems, reducing manufacturing costs, and providing excellent filamentous culture efficiency. Background Technology

[0002] The typical laver cultivation process consists of a series of steps. First, carpospores are collected from mature laver thallus and cultured in a culture container for about 2-3 months while adjusting the water temperature and light to obtain free filaments. Then, these free filaments are transplanted into oyster shells, allowing the filaments to penetrate the pores formed in the nacreous layer of the oyster shell to reproduce and form sporangia. At the optimal seed collection period, the oyster shells with sporangia are hung on seaweed rafts, allowing the spores contained in the sporangia to be released from the oyster shells by the current and waves and attach to the seaweed rafts, thus enabling the laver thallus to grow on the seaweed rafts.

[0003] In the existing laver farming, the cultivation method for filamentous organisms transplanted into the shells mainly adopts the following approach: placing oyster shells at the bottom of a wooden or plastic box or a concrete trough and filling it with culture water, allowing the filamentous organisms transplanted into the oyster shells to reproduce.

[0004] However, this method has problems such as difficulty in obtaining high-quality oyster shells, cumbersome oyster shell processing, and environmental pollution.

[0005] That is, since filamentous organisms reproduce by penetrating to a depth of about 0.2 to 0.3 mm into the nacreous layer of the oyster shell, the oyster shells used for cultivating filamentous organism seedlings should have a nacreous layer of at least 0.3 mm thickness. However, due to the frequent occurrence of red tides and water pollution in recent years, oyster farms have decreased sharply. Even the oyster shells that are still in production have become deformed with distorted shapes, uneven nacreous layer formation, and excessive exposure of the calcareous layer. As a result, it is difficult to obtain oyster shells suitable for cultivating filamentous organisms, and their price is also very high.

[0006] Furthermore, before transplanting the filaments, each oyster shell used for filament culture needs to be manually cleaned and placed one by one at the bottom of the incubator or culture tank. This requires a significant amount of manpower, and the weight during transportation increases both transportation and labor costs. Additionally, there is the extra processing required to place the shells in collection nets and hang them; when there is significant overlap, the number of oysters is limited relative to the cost, and the single-use oyster shells and collection nets require complete incineration, causing environmental pollution.

[0007] To address this issue, Korean Patent Publication No. 10-1998-0016932 discloses a seedling cultivation board utilizing the nacreous layer of laver and its preparation method. The nacreous layer is separated from the pearl mussel and processed to maintain a flat surface, then adhered to a plasterboard in a grid pattern, making it easy to handle and eliminating the risk of environmental pollution. However, this method also requires separating the nacreous layer from the pearl mussel, processing it, and then adhering it to the plasterboard in a grid pattern, thus failing to solve the problems of increased labor costs and difficulty in handling.

[0008] Prior art documents in the technical field to which this invention pertains include Korean Patent Publication No. 10-1998-0016932 and Korean Utility Model Publication No. 20-0415851. Summary of the Invention

[0009] Technical issues

[0010] Therefore, the purpose of this invention is to provide a filamentous culture membrane for laver cultivation and a filamentous culture method using the same. The filamentous culture membrane for laver cultivation replaces the existing oyster shells, which are difficult to supply and process, thereby solving the problem of raw material supply. Since there is no burden of labor costs caused by cleaning and placing oyster shells, the manufacturing cost is low. Furthermore, it is easy to transport due to its excellent lightweight properties and does not cause environmental pollution.

[0011] Another objective of this invention is to provide a filamentous culture film for laver cultivation and a filamentous culture method thereon. The filamentous culture film for laver cultivation is completely free of lime layer and does not overlap during seedling collection, thus exhibiting excellent efficiency relative to the culture area and being easy to fix onto a seaweed raft.

[0012] Technical solution

[0013] The filamentous culture membrane for laver cultivation of the present invention, which is used to achieve the above-mentioned objectives, is characterized in that it comprises: a base membrane formed into a rectangle having a specified width; and a coated base membrane consisting of a coating formed on the upper surface of the base membrane, wherein the base membrane and the coating are made of a biodegradable material.

[0014] The present invention is characterized in that the base film is composed of one or more of PBAT, PBS, PHA, PLA, PCL, PVA, PGA, cellulose, and starch-modified resin, and the coating film is composed of one or more of PBAT, PBS, PHA, PLA, PCL, PVA, PGA, cellulose, and starch-modified resin, wherein the materials of the coating film and the base film are different from each other.

[0015] The present invention is characterized in that the sum of the thicknesses of the base film and the coating film is 0.3 to 0.5 mm, and the width of the coating film is equal to or less than the width of the base film.

[0016] The present invention is characterized in that the base film is white and the coating film is transparent and light-transmitting.

[0017] The invention is characterized in that it further includes a fixing mesh laminated on the coating base film.

[0018] The present invention is characterized in that the fixing net is made of a material with a specific gravity greater than water.

[0019] The present invention is characterized in that the fixing net is made of metal material and coated with synthetic resin.

[0020] The method for culturing filaments according to the present invention is characterized by comprising the following steps: preparing the above-mentioned culture membrane; placing the coating base membrane of the culture membrane in a culture tank; fixing the coating base membrane by laminating a fixing net onto the upper surface of the placed coating base membrane; injecting seawater into the culture tank on which the culture membrane is provided to culture filaments on the coating base membrane; separating the fixing net in the culture tank; and recovering the coating base membrane on which the filaments are cultured.

[0021] The present invention is characterized in that, after the recycling step, it further includes a step of cutting and laminating the recycled coating base film.

[0022] The effects of the invention

[0023] The filamentous culture membrane for laver cultivation and the filamentous culture method thereof according to the present invention have the advantages of low manufacturing cost, excellent lightweight properties, easy handling and transportation, excellent effect relative to the culture area, easy fixation on seaweed rafts, and no environmental pollution, since there are no raw material supply issues and no labor costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the coating base film of the present invention.

[0025] Figure 2 This is a schematic diagram illustrating the culture membrane equipped with a fixing mesh according to the present invention.

[0026] Figures 3 to 5 The diagram illustrates the placement, separation, and cutting of the culture membrane of the present invention in a culture tank.

[0027] Figure 6 The diagram illustrates the state of the culture membrane after it has been cut and fixed on the seaweed raft according to the present invention. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings.

[0029] This invention aims to replace the existing oyster shells used for cultivating filaments in laver aquaculture. Its most significant feature is that it improves the supply and processing of oyster shells and increases the cultivation efficiency of filaments.

[0030] like Figure 1 As shown, the filamentous culture membrane for seaweed cultivation of the present invention is characterized by comprising: a base membrane 10, formed as a rectangle with a specified width; and a coating base membrane 100, which is composed of a coating 20 laminated on the upper surface of the base membrane 10, wherein the base membrane 10 and the coating 20 are made of biodegradable materials.

[0031] The base film 10 is formed into a rectangle with a specified width, and preferably is made of one or more of the following materials: biodegradable polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polyhydroxyalkanoate (PHA), polylactic acid (PLA), polycaprolactone (PCL), polyvinyl alcohol (PVA), polyglycolic acid (PGA), cellulose, and starch-modified resin.

[0032] This is because, since biodegradable materials are used, the waste coating base film can be landfilled after disposal, and it will biodegrade within a few months after landfilling, thus not causing environmental pollution.

[0033] Furthermore, when using this material, it has advantages in preparation and processing because it is soft and lightweight and can be prepared in roll form. It also facilitates the attachment and growth of filaments and the formation of sporangia.

[0034] In this case, preferably, the width of the base membrane 10 is prepared to be the same as the width of the culture tank of the filament, thereby improving ease of use and culture efficiency.

[0035] Moreover, preferably, the base membrane 10 is white to effectively culture filaments.

[0036] The coating 20 formed on the upper surface of the base film 10 is also rectangular with a specified width. Preferably, the coating 20 is also made of one or more of the following biodegradable materials: polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polyhydroxyalkanoate (PHA), polylactic acid (PLA), polycaprolactone (PCL), polyvinyl alcohol (PVA), polyglycolic acid (PGA), cellulose, and starch-modified resin. This is because, since biodegradable materials are used in the same manner as described above for the base film 10, it can be landfilled when disposed of, and it will biodegrade within a few months after landfilling. Furthermore, because the material is soft and lightweight, it can be prepared in roll form, thus showing advantages in preparation and treatment. It also facilitates the attachment and growth of filaments and the formation of sporangia.

[0037] In this case, the coating 20 is formed by coating the base film 10 with the material of the coating 20, and is prepared in a form that adheres to the base film 10 even without the use of additional adhesives. In this case, there are no limitations on the coating method; any conventionally disclosed method may be used.

[0038] In addition, the coating 20 is transparent, preferably light-transmitting, which allows filaments to be cultivated even under low light conditions, thereby reducing the possibility of diatom formation.

[0039] Preferably, the coating 20 is formed on the entire surface of the base film 10 in its length direction, but has a width equal to or less than that of the base film 10 in its width direction.

[0040] This is because the coating base film 100, which is composed of the base film 10 and the coating film 20, is cut into a specified width along the width direction after the filamentous body attaches and grows and forms sporangia, and is fixed on the seaweed raft 500 for seed collection. However, the two ends cut during fixing are the parts where the seaweed raft 500 is fixed and the binding operation is performed. Therefore, even in the state of filamentous body attachment and growth, its efficiency may be reduced.

[0041] In this invention, preferably, the sum of the thicknesses of the base film 10 and the coating film 20 is 0.3 to 0.5 mm. This is because, since the filaments reproduce at a depth of approximately 0.2 to 0.3 mm within the coating base film 100, filament reproduction is difficult when the thickness is less than 0.3 mm, and when it is greater than 0.5 mm, the excess thickness leads to decreased economic efficiency and processing efficiency.

[0042] In addition, such as Figure 2 As shown, the culture membrane of the present invention also includes a fixing mesh 200, which is laminated on the coating base membrane 100.

[0043] The fixing net 200 is used to fix the coating base film 100. Its function is to prevent the coating base film from floating on the water surface even when seawater is injected into the culture tank 300, and to prevent the coating base film 100 from being pushed to the outside when the seawater is discharged and the culture tank 300 is cleaned.

[0044] Therefore, the fixing net 200 can be made of a material with a specific gravity greater than water. Examples of such a material include metals, iron, stainless steel, etc. Preferably, the metal material is coated with a synthetic resin to prevent corrosion. The synthetic resin coating for corrosion prevention uses various types of synthetic resins known in the art, such as PP and PS, applied using existing methods, and therefore will not be described further here.

[0045] On the other hand, in the culture membrane of the present invention, the coating base film 100 is prepared in roll form by laminating the coating film 20 on the base film 10 having a specified width. When culturing filaments, it can be cut to a length corresponding to the culture tank 300. Furthermore, it can also be prepared to a length corresponding to the culture tank 300 during initial preparation. Moreover, the fixing net 200 is pre-made to a length corresponding to the culture tank 300, and is laminated onto the coating base film 100 for fixation when it is placed in the culture tank 300. After cultivation, the fixing net 200 is separated, and the coating base film 100 containing the filaments is recovered. It should be noted that the fixing net 200 is not fixed by adhesive or bonding to the coating base film 100.

[0046] The culture membrane according to the present invention has the following advantages: it can completely replace existing oyster shells, thus solving the raw material supply problem; it reduces labor costs because it eliminates the need for cleaning, sorting, and shell installation; and it has excellent culture efficiency because it can uniformly culture filaments throughout the entire culture membrane. Furthermore, its light weight reduces transportation costs, and it is easy to clean during culture.

[0047] The following is for reference. Figures 3 to 6 The method for culturing filaments according to the present invention is described in detail.

[0048] The filament culture method of the present invention utilizes a culture membrane. Since the culture membrane has been fully described above, it will not be described again.

[0049] The method for culturing filaments according to the present invention is characterized by comprising the following steps: preparing the above-mentioned culture membrane; placing the coating base membrane 100 of the culture membrane in a culture tank 300; fixing the coating base membrane 100 by laminating a fixing net 200 onto the upper surface of the placed coating base membrane 100; injecting seawater into the culture tank 300 on which the culture membrane is provided to culture filaments on the coating base membrane 100; separating the fixing net 200 in the culture tank 300; and recovering the coating base membrane 100 on which the filaments are cultured.

[0050] First, prepare a culture membrane including a coated base film 100 and a fixing mesh 200.

[0051] And, as Figure 3 As shown, the prepared coating base film 100 is placed in the culture tank. In this case, the coating base film 100 is prepared and used such that its width is the same as the width of the culture tank, thereby maximizing operational and culture efficiency.

[0052] Next, the fixing mesh 200 is laminated onto the upper surface of the coating base film 100 placed in the culture tank 300 to fix the coating base film 100, so that the coating base film 100 and the fixing mesh 200 are as follows: Figure 4 The coating base film 100 is set up in the culture tank 300 as shown. In this case, since the fixing net 200 is made of a material with a specific gravity greater than water, the coating base film 100 will not float even if seawater is injected into the culture tank 300 in a subsequent step, and the position of the coating base film 100 will remain fixed and will not move even if seawater is discharged or injected during the culture process for cleaning.

[0053] The process can be completed within 5 minutes when operated by a team of 2 people, which not only reduces labor costs but also allows the area utilization rate of the culture tank 300 to reach 100%, thus demonstrating excellent efficiency.

[0054] Furthermore, seawater is injected into the culture tank 300 where the culture membrane is provided to cultivate filaments on the coated base membrane 100. Since the coated base membrane 100 is fixed by the fixing net 200, high-pressure water supply can be performed.

[0055] In this case, after laminating the fixed net 200 or supplying water, it is natural to transplant filaments, which is a well-known technique in this field and will not be described in detail here.

[0056] Next, the filaments are cultured while adjusting the light intensity and water temperature. Drainage, water supply (seawater), or washing are performed as needed, and nutrient solutions are administered. These processes are the same as existing filament culture methods and will not be described in detail here.

[0057] After the filament culture is completed, as follows Figure 5 As shown, the fixed mesh 200 within the culture tank 300 is separated, and then the coated base film 100 containing the cultured filaments is recovered. Naturally, the fixed mesh 200 can be reused.

[0058] In this case, the coated base film 100 containing the filamentous structures can be directly laminated and transported to the laver farm. However, for ease of handling and transportation, such as Figure 5 As shown, after recycling, preferably, the coated base film 100 is cut to the required size, for example, about 8 cm in width, and then laminated and transported.

[0059] And, as Figure 6 As shown, the coated base film 100, which has been cultured with filamentous structures as described above, is set and fixed at a predetermined interval on the seaweed raft 500 in the laver farm. The entire seaweed raft 500 is then covered with plastic and placed into the sea for seed collection. That is, this replaces the existing shell culture net that places the cultured filamentous shells into a separate net.

[0060] In this case, the coating base film 100 can be fixed simply by fixing both ends with a binding machine, eliminating the need to insert the filamentous culture shells into a separate culture net. Therefore, it has the advantages of reducing labor and material costs and preventing environmental pollution caused by the culture net.

[0061] In this way, after the seaweed rafts are released into the sea and seedlings are collected, the plastic is removed, the coating base film is removed, and then laver cultivation is carried out.

[0062] In this process, it is natural to use a multi-layer seaweed raft 500. It should be noted that, except for the use of a culture film instead of a shell, the omitted instructions follow existing laver cultivation methods.

[0063] The embodiments of the present invention described above and illustrated in the accompanying drawings should not be construed as limiting the technical concept of the present invention. The scope of protection of the present invention is defined only by the contents of the claims, and those skilled in the art can improve and modify the technical concept of the present invention in various forms. Therefore, if such improvements and modifications are obvious to those skilled in the art, they will fall within the scope of protection of the present invention.

Claims

1. A filamentous culture membrane for laver cultivation, characterized in that, include: The base film is formed into a rectangle with a specified width; and The coating base film is composed of a coating film formed on the upper surface of the base film. The base film and coating film are made of biodegradable materials.

2. The filamentous culture membrane for laver cultivation according to claim 1, characterized in that, The base membrane is composed of one or more of the following: polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polyhydroxyalkanoate (PHA), polylactic acid (PLA), polycaprolactone (PCL), polyvinyl alcohol (PVA), polyglycolic acid (PGA), cellulose, and starch-modified resin. The coating film is composed of one or more of PBAT, PBS, PHA, PLA, PCL, PVA, PGA, cellulose, and starch-modified resin. The base film and the coating film are made of different materials.

3. The filamentous culture membrane for laver cultivation according to claim 1, characterized in that, The sum of the thicknesses of the base film and the coating film is 0.3–0.5 mm. The width of the coating is equal to or less than the width of the base film.

4. The filamentous culture membrane for laver cultivation according to claim 1, characterized in that, The base film is white. The coating is transparent and light-transmitting.

5. The filamentous culture membrane for laver cultivation according to any one of claims 1 to 4, characterized in that, It also includes a fixing mesh, laminated on the coating base film. The fixing net is made of a material with a specific gravity greater than water.

6. The filamentous culture membrane for laver cultivation according to claim 5, characterized in that, The fixing net is made of metal material and coated with synthetic resin.

7. A method for culturing filaments, characterized in that, Includes the following steps: Prepare the culture membrane according to claim 5; Place the coating base film from the culture membrane in the culture tank; The coating base film is fixed by laminating a fixing mesh onto the upper surface of the placed coating base film; Seawater is injected into a culture tank containing the culture membrane to culture filaments in the coated base membrane; Separate the fixation net of the culture membrane containing the filaments; The coating base film containing the filaments was recovered.

8. The method for culturing filaments according to claim 7, characterized in that, Following the recycling step, the process also includes cutting and laminating the recycled coating base film.

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