TWI746380B - Seaweed cultivation method - Google Patents

Abstract

The present invention relates to a cultivation method of seaweed. The method is mainly to clean the seaweed with sterilized seawater, and then use the thread to connect the backbone of the seaweed and fix it in the cage, and the cage system is set in the culture tank. Then by maintaining the water in the culture tank, and then through the light-emitting unit, the water in the culture tank emits light with a light quantum flux density (PPFD) of 100, 300, 500 μmol m ^-2s ^-1from top to bottom. And the light-emitting unit continues to emit light for 10 to 14 hours a day, and inject air into the water continuously or intermittently for 13 to 24 hours a day, and the air volume of this air is 0.01~0.4 vvm. In this way, through the difference of light quantum flux density, the seaweed will eventually appear bright red, bright yellow-green, or dark yellow. And through the protection of the cage, it can effectively prevent fish or aquatic organisms from eating the seaweed, at the same time, the first thread can not only support the growth of seaweed, but also help the seaweed to re-grow new sprouts from gnawed or damaged areas, and even form a secondary attachment disk attached to the surface of the first thread, thereby ensuring the seaweed growth.

Description

Seaweed cultivation method

The present invention relates to a breeding method, especially a seaweed breeding method

According to, seaweed is the algae that grows in the sea, mainly including red algae, brown algae, and green algae. Because algae are rich in nutrients, they are very helpful for human health. For example, brown algae contains alginic acid and iodine contained in algae. Elements can prevent hyperthyroidism, and eicosapentaenoic acid contained in algae is a highly unsaturated fatty acid, so it has the effect of preventing thrombosis.

In addition, alginic acid has a wide range of uses in the substances contained in seaweeds. It is easy to form gels with cations, such as sodium alginate. It is also called seaweed, algin or algin, which has the function of quickly absorbing water. It is often used as a dehydrating agent or sizing agent in papermaking and textiles; in the food industry, it is used as an emulsifier or thickener; in the pharmaceutical industry, it is used as a tablet binder because of its high viscosity.

Due to the above advantages of alginic acid and sodium alginate, the patents currently announced by the Smart Office are mostly related to or applied preparation methods of alginic acid and sodium alginate. For example, Taiwan Patent Certificate No. I626955 "Alginic Acid Containing Metal Crystals" Monomer production method”, I583446 “Preparation method and use of seaweed gum coated chitosan adsorption particles”, I506096 “Seaweed gum-coated straw powder composition and its preparation method”, I503131 “Seaweed polysaccharide body mask And its manufacturing method". However, most of the patents disclosed above are related to the extraction of alginic acid and sodium alginate, or the extraction technology of collagen. There is still no related technical literature that has further research results on the cultivation of seaweed.

In summary, the aforementioned patents mostly focus on the application and preparation of the substances contained in seaweeds, and less on the cultivation of seaweeds, because seaweed fish are quite vulnerable to sea creatures (such as fish and water insects) during their growth. The damage caused by eating, not only affects the growth of the seaweed, but also makes the overall appearance of the seaweed unsatisfactory. For this reason, the author believes that this problem is really necessary to improve.

In view of the shortcomings described in the prior art, the author proposes a solution, which is related to a method of cultivating seaweed, including the following steps:

(A) Wash the seaweed with sterilized sea water. (B) The seaweed has a backbone, and a first thread is connected along the backbone. (C) A cage is provided in the culture tank, the seaweed is placed in the cage, and the two ends of the first thread are fixed in the cage, and the water temperature in the culture tank is maintained at 18°C-26°C. (D) Use the light-emitting unit to emit light with a light quantum flux density (PPFD) of 100 μ mol m ^-2 s ^{-1 to} the water in the culture pool from top to bottom, and the light-emitting unit continues to emit light for 10 to 14 hours a day; Inject air into the water continuously or intermittently for 13 to 24 hours a day. The air volume of the air is 0.01 to 0.4 vvm. (E) Take out the seaweed from the culture tank after a period of time.

The advantage of this creation is that through the protection of the cage, it can effectively prevent aquatic organisms from eating without interfering with the environment required for the growth of seaweeds. At the same time, the first thread can not only support the growth of seaweeds, but also help seaweeds. The gnawed or damaged area re-grows new sprouts, and even forms a secondary attachment disc attached to the surface of the first thread. In this way, the seaweed can be effectively cultivated through this creative method. In addition, the light quantum flux density emitted by the light-emitting unit will also affect the color of the seaweed. For example, when the light-emitting unit emits light with a light quantum flux density (PPFD) of 100 μ mol m ^-2 s ^-1 , although the growth rate of the seaweed will be reduced, it can make the seaweed as a whole appear distinct Red, and when the light emitting unit emits light with a light quantum flux density of 300 μ mol m ^-2 s ^-1 , the growth rate of the seaweed is the fastest, but the overall color of the seaweed will gradually become bright yellow. As for when the light-emitting unit emits light with a light quantum flux density of 500 μ mol m ^-2 s ^-1 , the growth rate of the seaweed is slightly lower than that of receiving light with a light quantum flux density of 300 μ mol m ^-2 s ^-1 Seaweed, but the overall color will gradually become dark yellow.

Since the difference in the light quantum flux density emitted by the light-emitting unit will affect the color change of the seaweed, based on the relevant provisions of the patent law for a broad concept of invention, this specification proposes the following two inventions:

1. A method for cultivating seaweed, including the following steps: (A) Washing seaweed with sterilized seawater. (B) The seaweed has a backbone, and a first thread is connected along the backbone. (C) A cage is provided in the culture tank, the seaweed is placed in the cage, and the two ends of the first thread are fixed in the cage, and the water temperature in the culture tank is maintained at 18°C-26°C. (D) Using a light emitting unit to emit light with a photon flux density (PPFD) of 200 μ mol m ^-2 s ^{-1 to} the water in the culture tank from top to bottom, and the light emitting unit continues to emit light for 10 to 14 hours a day; Inject air into the water continuously or intermittently for 13 to 24 hours a day. The air volume of the air is 0.01 to 0.4 vvm. (E) Take out the seaweed from the culture tank after a period of time.

2. A method for cultivating seaweed, including the following steps: (A) Washing seaweed with sterilized seawater. (B) The seaweed has a backbone, and a thread is connected along the backbone. (C) A cage is provided in the culture tank, the seaweed is placed in the cage, and the two ends of the thread are fixed in the cage, and the water temperature in the culture tank is maintained at 18°C-26°C. (D) Use a light emitting unit to emit light with a light quantum flux density (PPFD) of 300 μ mol m ^-2 s ^{-1 to} the water in the culture tank from top to bottom, and the light emitting unit continues to emit light for 10 to 14 hours a day; Inject air into the water continuously or intermittently for 13 to 24 hours a day. The air volume of the air is 0.01 to 0.4 vvm. (E) Take out the seaweed from the culture tank after a period of time.

The following is a further explanation of the advantages, features, requirements, and specific implementation aspects of the invention with the aid of various figures.

Please refer to Figure 1. This creative department is about a seaweed cultivation and cultivation method, including the following steps:

Step S1: Clean the seaweed with sterilized seawater: This step mainly cleans the bacteria and parasites on the surface of the seaweed, or other insects and small fish in the water attached to the surface of the seaweed to facilitate the subsequent growth of the seaweed. Taking this specification as an example, the amount of the seaweed is preferably 3-10 kg/m ² wet weight.

Step S2 The seaweed has a backbone, and a first thread is connected along the backbone: This step is mainly to provide the effect of fixing the seaweed, especially after the first thread is connected to the trunk of the seaweed, the two ends of the first thread can be easily fixed to the cage, so that the seaweed can be in the seaweed. Growing inside the cage. In addition, the seaweed further extends a plurality of branches on the main stem, and a second thread is connected to each branch, and the two ends of each second thread are respectively fixed on the cage, so that the two adjacent parts of the seaweed There is no overlap. In this way, when the seaweed grows, each part will receive light fully and uniformly. When the whole color changes or maintains the color, the effect of uniform color distribution can be obtained. In addition, the material of the first thread body and each second thread body can be stainless steel thread, woolen thread, scout rope and other thread bodies, for example, those that can be connected to the seaweed trunk and the two ends are fixed to the cage, or to the branches Those connected and fixed to the cage at both ends are the first wire body or the second wire body described in this specification. In order to keep the cage in water or sea water for a long time, it is best to choose corrosion-resistant or rust-resistant material for the cage, such as one of the following groups: stainless steel, glass fiber reinforced plastic (FRP, Fiber -reinforced plastic), plastic, through the installation of the cage, it can effectively reduce the risk of seaweed being eaten by foreign organisms, and at the same time facilitate the cultivation and harvest of seaweed.

Step S3: A cage is provided in the culture tank, the seaweed is placed in the cage, and the two ends of the first thread are fixed in the cage, and the water temperature in the culture tank is maintained at 18°C-26°C: The temperature of the water in the culture tank is preferably controlled by a temperature control system, or the heat exchange wastewater is used to achieve the purpose of temperature control. Since the natural gas plant will absorb a large amount of seawater for heat exchange in order to change the ultra-low temperature liquefied natural gas (LNG) from liquid to gaseous state, the waste water after heat exchange is called LNG cold drainage, because the temperature of LNG cold drainage is mostly medium The temperature is between 14°C and 26°C, so the heat exchange wastewater referred to in this specification preferably refers to LNG cold drainage, and the effect of maintaining temperature can be achieved by replacing the LNG cold drainage. In addition, in addition to LNG cold drainage, thermal drainage from power plants can also be used. For example, in actual operation, according to the difference in temperature between seasons, the temperature is lower in winter, and it is better to use thermal drainage from power plants for cultivation; in summer; The temperature is higher, it is better to use LNG cold drainage for cultivation.

In step S4, a light emitting unit is used to emit light with a light quantum flux density (PPFD) of 100 μ mol m ^-2 s ^{-1 to} the water in the culture tank from top to bottom, and the light emitting unit continues to emit light for 10 to 14 hours every day; Inject air into the water continuously or intermittently for 13~24 hours a day. The air volume of the air is 0.01~0.4 vvm: It should be noted that the light quantum flux density is preferably 100 μ mol m ^-2 s -1, 300 ^{μ mol m -2 s -1 respectively.} μ mol m ^-2 s ^-1 , 500 μ mol m ^-2 s ^-1 , taking 100 μ mol m ^-2 s ^-1 as an example, after the seaweed grows in this environment, although the growth rate does not change much, During the growth process, the color of the seaweed will gradually form a bright red; and 300 μ mol m ^-2 s ^-1 is the highest growth rate of the seaweed, but it will gradually change to bright yellow or yellow-green during the growth process; As for 500 μ mol m ^-2 s ^-1 , the growth rate is slightly lower than 300 μ mol m ^-2 s ^-1 , and the color part is also different from that of 300 μ mol m ^-2 s ^-1 . 500 μ mol m -2 s -1 The m ^-2 s ^-1 seaweed gradually turns into dark yellow. In this way, the cultivator can determine the color of the seaweed after growth by adjusting the light quantum flux density according to their own needs. In addition, in order to avoid the uneven color of the seaweed, in addition to the light-emitting unit illuminating the culture pool from top to bottom, it is better to connect the bottom wall and the ring side wall of the culture pool with the light-emitting unit, so as to transmit Provide uniform brightness in all directions to irradiate the seaweed. At the same time, the branches and trunks of the seaweed are supported by the second thread body without overlapping each part. Therefore, each part of the seaweed will receive light evenly, so that The seaweed will eventually form a state of evenly distributed color.

In this step, the following steps are further added: add nutrients to the culture tank at least two days a week, the nutrients include 1~8 mg/L nitrogen and 0.1~0.8 mg/L phosphorus; 13 Inject air into the heat exchange wastewater continuously or intermittently for ~24 hours, and the air contains 0.04%~30% CO ₂ , the air volume of the air is 0.01~0.4 vvm, and the culture tank is regularly replaced before 3 pm The heat exchange wastewater is added to the nutrient salt regularly from 3 to 6 pm, and the culture tank is cleaned every one to three weeks.

In this way, it can provide the nutrients needed by the seaweed during the growth process, and the nutrients in the nutrient salt preferably include 1~8 mg/L nitrogen and 0.1~0.8 mg/L phosphorus, so as to provide seaweed growth. Needs main nutrients. Moreover, generally speaking, the time for seaweed to absorb the nutrients in the nutrient salt mostly falls at night. In order for the seaweed to fully absorb the nutrient salt, the time for adding the nutrient salt is preferably between 3 pm and 6 pm between. In addition, in order to match the nutrient addition time, the replacement time of the heat exchange wastewater in the culture tank also needs to be adjusted in the same way. Taking this manual as an example, the replacement time of the heat exchange wastewater is before 3 pm, and depends on the season. There are also different deployment times. For example, the replacement time in summer is preferably from 8:00 to 15:00, while in winter it is from 10:00 to 13:00. And when replacing, it can be adjusted according to the temperature in the culture tank, and you can choose to replace all the heat exchange wastewater, or replace only a small part of it.

When the seaweed grows, in addition to the proper water temperature and an environment with sufficient nutrients, it also needs sufficient carbon dioxide, so air must be added to the heat exchange wastewater. In addition, the air volume of the air is preferably 0.01 to 0.4 vvm, and the air contains 0.04% to 30% CO ₂ to provide a gas volume suitable for the growth of algae. In addition, the process of injecting air can be continuous or intermittent. The continuous method is to continuously inject air to the LNG cold drainage within 13 to 24 hours a day, and the intermittent method is to continuously inject air for 1 hour, and then stop for 1 hour. Inject air, and continue to inject air within 1 hour, and so on, continue to circulate until the aforementioned 13~24 hours are met, and then stop. Moreover, the time mentioned in the intermittent type is only an example and can be adjusted according to needs, for example, 2 hours Inject air continuously into the inside, then stop injecting air for 1 hour, continue to inject air for 2 hours, and so on. In addition, in order to keep the culture tank clean, it is better to clean the culture tank every 1 to 3 weeks.

Step S5 Take out the seaweed from the culture pond after a period of time: After following the steps listed above, the seaweed can be taken out after a period of time. At this time, the seaweed, like the aforementioned difference in the light quantum flux density provided by the light-emitting unit, will have a significant difference in color and growth rate.

From the above, the advantages of this creation are: (1) Through the protection of the cage, it can effectively prevent fish or other organisms from gnawing on the seaweed, and it can be effectively used to clean the seaweed with the sterilized seawater at the beginning. Avoid parasites, bacteria, insects, or small fish from gnawing on the seaweed, which will help the growth of the seaweed. (2) The first thread or the second thread can not only support the growth of seaweed, but also help the seaweed fish to re-grow new sprouts from being eaten or damaged, and even form a secondary attachment plate attached to the first thread. A wire body or the surface of the second wire body. In this way, seaweed can be effectively cultivated through this creative method. (3) Different light quantum flux densities can be selected to provide light to the seaweed, which can effectively make the seaweed appear bright red, or turn into bright yellow, bright yellow-green or dark yellow.

In order to further provide the seaweed discoloration effect, this creation can further add steps between the above step S4 and step S5 as follows: Step S6 After one to three weeks from the execution date of step S4, replace the heat exchange wastewater in the culture tank and stop adding the nutrient salt: Since the key to making the seaweed start to turn yellow is not only light, but also nutrients. In order to more effectively change the color of the seaweed, it is better to replace all the heat exchange wastewater in the culture tank, and then stop adding The nutrient salt, so that the seaweed will start to grow in the environment without the nutrient salt, which can effectively make the seaweed gradually turn yellow

Step S7 Inject air into the water continuously or intermittently for 13~24 hours a day, the air volume of the air is 0.01~0.4 vvm, and the air contains 0.04%~30% CO ₂ , and light is provided to irradiate the seaweed; replace the culture regularly The heat exchange wastewater in the pond is cleaned every one to three weeks. As mentioned above, the main factor for the discoloration of the seaweed is whether there are nutrients. Other growth conditions must be maintained. Therefore, the step starts to stop adding nutrients and the air Preferably, it contains 0.04%-30% CO ₂ . In order for the seaweed to have sufficient light for photosynthesis, the light exposure time is at least 10 hours a day, and the light can be obtained by sunlight or through sunlight. Similarly, the culture tank must be cleaned every 1 to 3 weeks to keep the tank clean.

In summary, this case meets the requirements set by the Patent Law, and a patent application was filed in accordance with the law. The above description only lists the preferred embodiments of the invention, and the scope of rights in this case is still mainly listed in the claims.

S1~S7: steps

Figure 1 is a flow chart of the steps of the present invention

S1~S7: steps

Claims (10)

A method for cultivating and cultivating seaweeds includes the following steps: (A) washing the seaweed with sterilized seawater; (B) the seaweed has a backbone, and a first thread is connected along the backbone; (C) a culture tank is provided with a A cage, the seaweed is placed in the cage, and the two ends of the first thread are fixed in the cage, and the water temperature in the culture tank is maintained at 18°C-26°C; (D) using a light-emitting unit from above The water in the culture tank emits light with a light quantum flux density (PPFD) of 100 μ mol m ^-2 s ^-1 , and the light-emitting unit continues to emit light for 10 to 14 hours a day; 13 to 24 hours a day continuously or intermittently Inject air into the water, the air volume of the air is 0.01~0.4vvm; (E) Take out the seaweed from the culture tank after a period of time. A method for cultivating and cultivating seaweeds includes the following steps: (A) washing the seaweed with sterilized seawater; (B) the seaweed has a backbone, and a first thread is connected along the backbone; (C) a culture tank is provided with a A cage, the seaweed is placed in the cage, and the two ends of the first thread are fixed in the cage, and the water temperature in the culture tank is maintained at 18°C-26°C; (D) using a light-emitting unit from above The water in the culture tank emits light with a light quantum flux density (PPFD) of 200 μ mol m ^-2 s ^-1 , and the light-emitting unit continues to emit light for 10 to 14 hours a day; 13 to 24 hours a day continuously or intermittently Inject air into the water, the air volume of the air is 0.01~0.4vvm; (E) Take out the seaweed from the culture tank after a period of time. A method for cultivating seaweed, including the following steps: (A) washing the seaweed with sterilized seawater; (B) the seaweed has a trunk, and a thread is connected along the trunk; (C) a cage is provided in the culture tank, The seaweed is placed in the cage, and the two ends of the thread are fixed in the cage, and the temperature of the water in the culture tank is maintained at 18°C-26°C; (D) the luminous unit is used for the culture tank from top to bottom The water inside emits light with a light quantum flux density (PPFD) of 300 μ mol m ^-2 s ^-1 , and the light-emitting unit continues to emit light for 10 to 14 hours a day; continuous or intermittent injecting air into the water for 13 to 24 hours a day, the The air volume of the air is 0.01~0.4vvm; (E) Take out the seaweed from the culture tank after a period of time. The method for cultivating seaweed according to any one of claim 1 to claim 3, wherein the seaweed further extends a plurality of branches on the main stem, and each branch is connected to a second thread body, and two of each second thread body The ends are respectively fixed on the cage so that the two adjacent parts of the seaweed will not overlap; the number of the light-emitting units is plural, and the bottom wall and the ring side wall of the culture tank are respectively provided with the light-emitting units. The seaweed cultivation method according to claim 4, wherein the first thread body and the second thread body are made of scout rope; the material of the cage body can be selected from one of the following groups: stainless steel, glass fiber Reinforced plastic (FRP, Fiber-reinforced plastic), plastic. According to claim 5, the seaweed cultivation method, wherein the amount of the seaweed in step (A) is 3-10 kg/m ² wet weight; in step (C): the water in the culture tank is heat exchange wastewater; In step (D): add nutrient salt to the culture tank at least two days a week, the nutrient salt includes 1~8mg/L nitrogen and 0.1~0.8mg/L phosphorus; 13~24 hours a day or Intermittently inject air into the heat exchange wastewater; add a step (F) in sequence between step (D) and step (E): one to three weeks after the execution of step (C), replace the culture tank The heat exchange waste water, and stop adding the nutrient salt. The seaweed cultivation method according to claim 6, wherein in step (D): regularly replace the heat exchange wastewater in the culture tank before 3 pm, and regularly add the nutrient salt from 3 pm to 6 pm . The method for culturing and cultivating seaweed according to claim 7, wherein in step (D): the culturing pool is cleaned every one to three weeks, and the air contains 0.04%-30% CO ₂ , and the air volume of the air is 0.01 ~0.4vvm. The method for cultivating seaweed according to claim 8, wherein a step (G) is added in step (F) to step (E): continuously or intermittently injecting air into the water for 13 to 24 hours a day, the air of the air The amount is 0.01~0.4vvm, and light is provided to illuminate the seaweed; the heat exchange wastewater in the culture tank is regularly replaced. According to the seaweed cultivation method of claim 9, wherein in step (G): the cultivation pond is cleaned every one to three weeks, and the air contains 0.04%-30% CO ₂ .

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