Filamentous body culture film for laver cultivation and filamentous body culture method using the same

Abstract

The present invention relates to a filamentous culture film for laver cultivation and a filamentous culture method using the same. [Solution] The present invention provides a culture film comprising a base film formed in a rectangular shape with a certain width and a coating film formed on the top surface of the base film, the base film and the coating film being made of biodegradable materials, and a method for efficiently cultivating filaments for Nori cultivation using the same. The present invention has the advantages of low production costs due to the absence of raw material supply and demand issues and labor costs, easy transportation, high efficiency compared to the cultivation area, easy fixation to Nori cracks, and no environmental pollution.

Description

[Technical Field]

[0001] The present invention relates to a filamentous body culture film for Nori cultivation and a filamentous body culture method using the same. More specifically, the present invention relates to a filamentous body culture film for Nori cultivation that is easy to handle, does not pose a risk of environmental pollution, has low production costs, and has excellent filamentous body culture efficiency, by using a culture film composed of a base film and a coating film, which are biodegradable materials, instead of conventional oyster shells, and a filamentous body culture method using the same. [Background technology]

[0002] The typical Nori cultivation process involves a series of steps: first, carpospores are collected from mature Nori thalli, and then cultured in a culture vessel for approximately two to three months while adjusting the water temperature and light intensity to obtain free filaments; then, these free filaments are transplanted into oyster shells, allowing the filaments to propagate and form sporangia through the tiny holes formed in the nacre of the oyster shell; and, at the optimum time for seedling collection, the oyster shells with the formed sporangia are hung in cracks in the Nori seaweed, allowing the spores in the sporangia to be released from the oyster shells by the current and waves and attached to the cracks, thereby allowing Nori thalli to grow in the cracks.

[0003] In conventional Porphyra cultivation, the cultivation method for the filaments transplanted into the shells is mainly a method in which oyster shells are lined on the bottom of a wooden or plastic box or a concrete tank and culture water is filled to allow the filaments transplanted into the oyster shells to multiply.

[0004] However, this method has the problems of making it difficult to secure good quality oyster shells, making handling of the oyster shells cumbersome, and causing environmental pollution.

[0005] That is, since filaments propagate when embedded approximately 0.2 to 0.3 mm below the surface of the nacreous layer of the oyster shell, oyster shells used for culturing filaments must have a uniformly formed nacreous layer with a thickness of at least 0.3 mm. However, due to the frequent occurrence of red tides and water pollution in recent years, the number of oyster farms has rapidly decreased, and the oyster shells that are produced are prone to deformation, with twisted shapes, and the nacreous layer is not formed uniformly, resulting in excessive exposure of the calcareous layer. As a result, it has been difficult to secure oyster shells suitable for filamentous culture, and the price has been very high.

[0006] In addition, oyster shells for filamentous culture must be thoroughly washed before transplanting the filaments and then individually arranged on the bottom of a culture box or culture tank, which requires a lot of labor and is heavy when shipped, resulting in high transportation and labor costs. Furthermore, a separate process of placing the filaments in a seedling net and suspending them is required, and if there are many overlaps, the amount of seeds produced is not as high as the cost, and all oyster shells and seedling nets used once must be incinerated, which causes environmental pollution.

[0007] To solve these problems, Patent Document 1 proposes a seed culture plate for laver filaments using shell nacre, which is easy to handle and does not pose a risk of environmental pollution, by separating the nacre from the mussels, processing it so that it remains flat, and then attaching it to a plaster board in a grid pattern. However, this method also requires separating the nacre from the mussels, processing it, and then attaching it to a plaster board in a grid pattern, which does not at all solve problems such as rising labor costs and difficulty in handling.

[0008] Prior art documents in the technical field to which the present invention pertains include Patent Document 1 and Patent Document 2. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Korean Patent Publication No. 10-1998-0016932 [Patent Document 2] Korean Registered Utility Model No. 0415851 Summary of the Invention [Problem to be solved by the invention]

[0010] Therefore, the object of the present invention is to provide a filamentous body culture film for seaweed cultivation, which can solve the supply and demand problem of raw materials by replacing oyster shells, which are difficult to supply and handle, and which has low production costs because there is no labor cost for tasks such as washing and arranging oyster shells, is lightweight and therefore easy to transport, and does not cause environmental pollution, as well as a filamentous body culture method using the same.

[0011] Another object of the present invention is to provide a filamentous culture film for Nori cultivation, which has no lime layer, does not overlap when harvesting seedlings, is more efficient than the cultivation area, and is easy to fix to cracks in Nori, and a filamentous culture method using the same. [Means for solving the problem]

[0012] To achieve the above object, the filamentous body culture film for Nori cultivation of the present invention includes a coated base film composed of a base film formed in a rectangular shape with a certain width and a coating film formed on the upper surface of the base film, and the base film and the coating film are characterized by being made of biodegradable materials.

[0013] The base film is made of one or more of PBAT, PBS, PHA, PLA, PCL, PVA, PGA, cellulose, and starch-modified resin, and the coating film is made of one or more of PBAT, PBS, PHA, PLA, PCL, PVA, PGA, cellulose, and starch-modified resin, and the base film and the coating film are made of different materials.

[0014] The total thickness of the base film and the coating film is 0.3 to 0.5 mm, and the width of the coating film is the same as or smaller than that of the base film.

[0015] The base film is white, and the coating film is transparent and allows light to pass through.

[0016] The coating base film further includes a fixing net laminated on the coating base film.

[0017] The fixed net is made of a material having a specific gravity greater than that of water.

[0018] The fixed net is made of a metal material and coated with a synthetic resin.

[0019] The method for culturing filamentous bodies according to the present invention is characterized by comprising the steps of preparing the above-mentioned culture film, arranging the coated base films in the culture film in a culture tank, stacking and fixing a fixing net on the upper surface of the arranged coated base films, supplying seawater into the culture tank in which the culture film is provided to cultivate filamentous bodies on the coating base film, separating the fixing net in the culture tank, and recovering the coating base film on which the filamentous bodies have been cultivated.

[0020] The method further comprises, after the recovering step, cutting and laminating the recovered coating base film. [Effects of the Invention]

[0021] The filamentous body culture film for Nori cultivation and the filamentous body culture method using the same according to the present invention have the advantages of low production costs due to the absence of supply and demand issues of raw materials and labor costs, easy handling and transportation due to their light weight, excellent efficiency compared to the cultivation area, easy fixation to Nori cracks, and no environmental pollution. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a perspective view showing a coated base film according to the present invention. [Figure 2] 1 is a perspective view showing a culture film provided with a fixing net according to the present invention; [Figure 3] FIG. 1 is a diagram showing a state in which the culture film according to the present invention is placed in a culture tank. [Figure 4] FIG. 1 is a diagram showing a state in which the culture film according to the present invention is placed in a culture tank. [Figure 5] 1A and 1B are diagrams illustrating the separation and cutting of the culture film according to the present invention. [Figure 6] FIG. 10 is a diagram showing the state in which the culture film according to the present invention is fixed to a seaweed crack after being cut. DETAILED DESCRIPTION OF THE INVENTION

[0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

[0024] The present invention is intended to replace oyster shells used for cultivating filaments in conventional seaweed cultivation, and its greatest feature is that it improves the problems associated with the supply and demand and handling of oyster shells and increases the efficiency of filamentous culture.

[0025] The filamentous body culture film for Nori cultivation of the present invention includes a coated base film 100 composed of a base film 10 formed in a rectangular shape with a certain width and a coating film 20 laminated on the upper surface of the base film 10, as shown in FIG. 1, and is characterized in that the base film 10 and the coating film 20 are made of biodegradable materials.

[0026] The base film 10 is preferably formed in a rectangular shape with a certain width and made of one or more biodegradable materials selected from the group consisting of PBAT (Poly-Butylene Adipate Terephthalate), PBS (Polybutylene Succinate), PHA (Polyhydroxy alkanoate), PLA (Polylactic Acid), PCL (Polycaprolactone), PVA (Polyvinyl Alcohol), PGA (Polyglycolic acid), cellulose, and starch-modified resins.

[0027] This is because, since a biodegradable material is used, the coated base film 100 can be disposed of in a landfill afterwards, and can be biodegraded within several months after being disposed of, so that it does not cause environmental pollution.

[0028] Furthermore, the use of such materials not only offers advantages in terms of production and handling, in that they are flexible, lightweight, and can be automatically produced in roll form, but also makes it easier for filamentous bodies to attach and for sporangia to form.

[0029] In this case, it is preferable that the width of the base film 10 is made the same as the width of the culture tank for the filaments, thereby increasing ease of use and culture efficiency.

[0030] The base film 10 is preferably white in color, so that the filamentous bodies can be cultured effectively.

[0031] The coating film 20 formed on the upper surface of the base film 10 also has a rectangular shape with a certain width. The coating film 20 is preferably made of one or more biodegradable materials, such as PBAT (Poly-Butylene Adipate Terephthalate), PBS (Polybutylene Succinate), PHA (Polyhydroxy alkanoate), PLA (Polylactic Acid), PCL (Polycaprolactone), PVA (Polyvinyl Alcohol), PGA (Polyglycolic acid), cellulose, and starch-modified resins. This is because, as described above for the base film 10, using a biodegradable material allows for landfill disposal and biodegradation within several months after landfilling. Furthermore, the material is flexible, lightweight, and can be automatically manufactured into a roll, which not only provides advantages in manufacturing and handling but also facilitates the attachment of filaments and the formation of sporangia.

[0032] In this case, the coating film 20 is formed by coating the material of the coating film 20 on the base film 10, and is manufactured in a form of being adhered to the base film 10 without using a separate adhesive. The coating method is not limited, but may be any conventionally known method.

[0033] Furthermore, it is desirable that the coating film 20 is transparent and light-transmitting, which allows the cultivation of filaments even under low light intensity and reduces the possibility of diatom growth.

[0034] The coating film 20 is formed over the entire base film 10 in the longitudinal direction, but preferably has a width equal to or smaller than that of the base film 10 in the width direction.

[0035] This is because the coating base film 100, which is composed of the base film 10 and the coating film 20, is cut to a certain width in the width direction after the attachment of filaments and the formation of sporangia, and is fixed to the laver crack 500 for seedling harvesting. However, both ends of the cut coating base film 100 are used with a stapler when fixing the laver crack 500, and the efficiency may decrease even when the filaments have attached.

[0036] In the present invention, the total thickness of the base film 10 and the coating film 20 is preferably 0.3 to 0.5 mm. This is because the filaments propagate while penetrating into the coating base film 100 to a depth of about 0.2 to 0.3 mm, and if the thickness is less than 0.3 mm, it is difficult for the filaments to propagate, while if the thickness exceeds 0.5 mm, the thickness is greater than necessary, which is economical and makes the film difficult to handle.

[0037] In addition, the culture film of the present invention further includes a fixing net 200 laminated on the coating base film 100, as shown in FIG.

[0038] The fixing net 200 is used to fix the coating base film 100 and prevents the coating base film 100 from floating on the water surface even when seawater is supplied into the culture tank 300, and also prevents the coating base film 100 from being pushed out when the seawater is drained and the culture tank 300 is cleaned.

[0039] For this purpose, the fixed net 200 may be made of a material having a specific gravity greater than that of water. Examples of such materials include metal, iron, and stainless steel. The metal is preferably coated with a synthetic resin to prevent corrosion. The synthetic resin coating for corrosion prevention is performed by a conventional method using various types of synthetic resins known in the art, such as PP and PS, and therefore a detailed description thereof will be omitted.

[0040] Meanwhile, the culture film according to the present invention is manufactured in a roll form as a coating base film 100, in which the coating film 20 is laminated on the base film 10 having a certain width, and can be cut to a length corresponding to the culture tank 300 when culturing filaments. Alternatively, it can be manufactured to a length corresponding to the culture tank 300 at the time of initial production. The fixing net 200 is previously manufactured to a length corresponding to the culture tank 300, and is laminated and fixed on top of the coating base film 100 when arranging the coating base film 100 in the culture tank 300. After the culture is completed, the fixing net 200 is separated and the coating base film 100 on which the filaments have been cultured is collected; it should be clarified that the fixing net 200 is not fixed by being bonded or attached to the coating base film 100.

[0041] The culture film of the present invention can completely replace conventional oyster shells, eliminating the problem of raw material supply and demand, eliminating the need for shell cleaning, sorting, and installation, thereby reducing labor costs, and enabling uniform culture of filaments throughout the culture film, resulting in excellent culture efficiency.Furthermore, its light weight reduces transportation costs, and it is easy to clean during culture.

[0042] The method for culturing filaments according to the present invention will be described in detail below with reference to FIGS.

[0043] The method for culturing filaments according to the present invention uses a culture film, which has been fully explained above, so a detailed explanation thereof will be omitted.

[0044] The method for culturing filamentous bodies according to the present invention is characterized by comprising the steps of preparing the above-mentioned culture film, arranging the coating base films 100 in the culture film in a culture tank 300, stacking and fixing a fixing net 200 on the upper surface of the arranged coating base films 100, supplying seawater into the culture tank 300 in which the culture film is provided to cultivate filamentous bodies on the coating base film 100, separating the fixing net 200 in the culture tank 300, and recovering the coating base film 100 on which the filamentous bodies have been cultured.

[0045] First, a culture film including a coating base film 100 and a fixing net 200 is prepared.

[0046] Then, as shown in Figure 3, the coating base film 100 of the prepared culture film is arranged in the culture tank. At this time, the coating base film 100 is prepared and used so that its width and length are the same as those of the culture tank, thereby maximizing work efficiency and culture efficiency.

[0047] Next, a fixing net 200 is layered on the top surface of the coating base film 100 arranged in the culture tank 300 to fix the coating base film 100, so that the coating base film 100 and fixing net 200 are installed in the culture tank 300 as shown in Figure 4. In this case, since the fixing net 200 is made of a material with a specific gravity greater than that of water, the coating base film 100 will not float even if seawater is supplied into the culture tank 300 at a later stage, and the position of the coating base film 100 will not move even if seawater is drained or supplied for cleaning during culture.

[0048] This process can be completed within five minutes by two people working together, which not only reduces labor costs but also allows the area of ​​the culture tank 300 to be fully utilized, resulting in excellent efficiency.

[0049] Seawater is then supplied into the culture tank 300 in which the culture film is installed, and filaments are cultured on the coating base film 100. Since the coating base film 100 is fixed by the fixing net 200, water can be supplied at high water pressure.

[0050] In this case, it is natural that the filaments are implanted after the fixing net 200 is layered or after water is supplied, but since this is a well-known technique in the field to which the present technology belongs, detailed explanation of this will be omitted.

[0051] The filamentous bodies are then cultured while adjusting the illuminance and water temperature, and the water is drained, water is supplied (seawater is supplied), or washed as needed, and nutrients are administered. These processes are also similar to conventional filamentous body culture methods, and therefore a detailed description thereof will be omitted.

[0052] When the cultivation of the filaments is completed, the fixed net 200 in the cultivation tank 300 is removed, and the coating base film 100 on which the filaments have been cultivated is collected, as shown in Figure 5. The fixed net 200 can, of course, be reused.

[0053] In this case, the coating base film 100 in which the filaments have been cultivated can be stacked as it is and transported to the seaweed farm. However, for ease of handling and transportation, it is preferable to cut the coating base film 100 to the required size, for example, a width of about 8 cm, after collection, as shown in FIG. 5, and then stack and transport the cut pieces.

[0054] The coated base film 100 on which the filaments have been cultivated is installed and fixed at regular intervals on the laver cracks 500 in the laver farm as shown in Fig. 6, and the laver cracks 500 are entirely covered with vinyl and thrown into the sea for seedling harvesting. In other words, this replaces the conventional shell cultivation net in which the shells on which the filaments have been cultivated are placed in a separate net.

[0055] In this case, the coating base film 100 can be fixed simply by fixing both ends using a stapler, and there is no need to insert the filament culture shell into a separate culture net, which has the advantages of reducing labor and material costs and preventing environmental pollution caused by the culture net.

[0056] Once the seedlings have been released into the sea, the seaweed cracks 500 are collected, the vinyl is peeled off to remove the coating base film 100, and the seaweed is then cultivated.

[0057] It is obvious that multiple layers of Nori Hibi 500 can be used in this process, but the omitted explanation makes it clear that the conventional Nori cultivation method is followed, except for the use of culture film instead of shells.

Claims

1. A base film formed in a rectangular shape having a certain width; a coating film formed on the upper surface of the base film; and The base film and the coating film are made of biodegradable materials.

2. The base film is made of at least one of PBAT (Poly-Butylene Adipate Terephthalate), PBS (Polybutylene Succinate), PHA (Polyhydroxyalkanoate), PLA (Polylactic Acid), PCL (Polycaprolactone), PVA (Polyvinyl Alcohol), PGA (Polyglycolic acid), cellulose, and starch-modified resin; The coating film is made of one or more of PBAT, PBS, PHA, PLA, PCL, PVA, PGA, cellulose, and starch-modified resins; The filamentous culture film for laver cultivation according to claim 1, wherein the base film and the coating film are made of different materials.

3. the total thickness of the base film and the coating film is 0.3 to 0.5 mm; 2. The filamentous culture film for laver cultivation according to claim 1, wherein the width of the coating film is equal to or smaller than that of the base film.

4. The base film is white, 2. The filamentous culture film for laver cultivation according to claim 1, wherein the coating film is transparent and allows light to pass through.

5. The coating base film further includes a fixing net laminated on the fixing net, The filamentous body culture film for laver cultivation according to any one of claims 1 to 4, wherein the fixed net is made of a material having a specific gravity greater than that of water.

6. 6. The filamentous culture film for laver cultivation according to claim 5, wherein the fixed net is made of a metal material and coated with a synthetic resin.

7. Preparing a culture film according to claim 5; Arranging the coated base film of the culture film in a culture tank; a fixing net on the upper surface of the arranged coating base film to fix the coating base film; A step of supplying seawater into a culture tank provided with the culture film to culture filaments within the coating base film; Separating the fixed mesh of the culture film on which the filaments are cultured; and recovering the coated base film on which the filaments have been cultured.

8. After the recovering step, The method for culturing filaments according to claim 7, further comprising the step of cutting and stacking the recovered coating base film.

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