48 results about "Fresh water fish" patented technology

The invention relates to method for obtaining collagen from animal sources such as fresh or saltwater fish, chicken, eggs or from parts of these animal sources that can be considered waste, and to a collagen hydrolysate obtained as a result of this method.

The invention discloses a low-carbon freshwater fish feed added with fermented bamboo powder and application of the low-carbon freshwater fish feed, and belongs to the technical field of aquatic animal feeds. The low-carbon freshwater fish feed capable of reducing the fat rate of fish bodies and / or reducing nitrogen and phosphorus emission is prepared from the fermented bamboo powder, and the content of vitamins, enzymes and growth factors in the feed can be increased by adding the fermented bamboo powder, so that the freshwater fish bodies have good anti-pathogenic activity; the absorption and utilization of the freshwater fish on nutritional ingredients and fiber-rich ingredients in the feed are improved, so that the aim of reducing the emission of nitrogen and phosphorus is fulfilled; meanwhile, the fermented bamboo powder is used for partially replacing soybean meal in the freshwater fish feed, so that the dosage of feed raw materials such as the soybean meal is reduced, the intestinal health of the freshwater fish is improved, the muscle quality of the freshwater fish is improved, the earthy smell in muscles is reduced, the body type of the freshwater fish is also improved, and the fat content in abdominal muscles is reduced.

The present invention provides a compound feed for freshwater fish and a preparation method thereof, comprising the following raw materials in parts by weight: 39-44 parts of corn protein powder, 22-34 parts of cottonseed protein powder, 5.4-9.2 parts of black soldier fly larva powder, 11-23 parts of fish oil, 20-30 parts of Schizochytrium powder, 7.5-12.4 parts of soy lecithin powder, 4-10 parts of maltitol, 8-12 parts of sodium butyrate, 8-15 parts of Chinese herbal medicine liquid, 0.2-0.8 parts of compound fermenting agent. Through steps such as raw material mixing, Chinese herbal medicine liquid fermentation, homogenization, puffing and spray drying in sequence, the feed quality control is carried out, so that the compound feed has a relatively high absorption rate and palatability, ensures the intake of the components of the Chinese herbal medicine fermentation liquid, significantly improves the survival rate and growth rate of freshwater fish, and has remarkable economic benefits.

The proposed invention corresponds to a fish treatment system for disinfection and deworming in situ, using a system of tubes for the transport of live fish throughout the system in fresh water, obtained directly from salt water or spring water. sea, where the fish are transported by the different sections of the disinfection system from the diseased fish farming unit, through the treatment pond and to the treated fish farming unit, where the removal of parasites in fresh water It is carried out by chemical, electrochemical, mechanical and energetic means, in the treatment pond and later, the treatment water is treated for the removal of medicine and finally reconstituted to the initial conditions (sea water) to be returned to the environment.

The utility model provides a fry hatching device, which relates to the technical field of fry hatching and comprises an adult fish box, a hatching box fixedly connected to the bottom of the adult fish box, a baffle fixedly mounted in the hatching box and a separation component arranged in the hatching box, and the separation component comprises a guide funnel, a hatching frame, a connecting column and a supporting block; the cleaning assembly is arranged at the bottom of the baffle and comprises a collecting tank, a collecting pipe, a circulating pump, a backflow pipe and a triangular scraper. According to the fish fry hatching device, the separation assembly can make freshwater fish roe balls adhere to the hatching frame, fish food residues are not sticky and can fall to the position above the baffle, it is ensured that the fish food residues of adult fishes cannot be mixed with the fish roe balls, through arrangement of the cleaning assembly, the fallen fish food residues and the like are scraped into the collecting groove, and the fish roe balls are prevented from being damaged. And then residues are sucked out along with water flow through the circulating pump, so that the interior of the incubator is cleaned, the incubation water quality is improved, and fry are not affected by the water quality and are incubated smoothly.

The invention relates to the technical field of traditional fermented food processing, and discloses flavor-improved fish tea and a low-salt fermentation preparation method thereof.The preparation method comprises the steps that pretreated freshwater fish blocks and steamed rice are mixed, aspergillus oryzae is inoculated for aerobic culture, and fish tea koji is prepared; then mixing with a low-salt seasoning group, inoculating lactobacillus plantarum and other safe and basic flavor bacteria, and carrying out anaerobic lactic acid fermentation; adding dormant-state saccharomyces cerevisiae spore particles, carrying out pressure difference activation treatment, and continuously carrying out yeast aroma-producing fermentation; and finally, after-ripening and sterilizing to obtain a finished product. Through the synergistic effect of fish tea koji pre-enzymolysis, functional bacterial system sequential inoculation and differential pressure activated yeast, high biological safety under the low-salt condition is achieved, the flavor layering sense and the taste fullness of the product are remarkably improved, and the accuracy and stability of the fermentation process are improved.

The utility model discloses freshwater fish loading auxiliary equipment, which relates to the technical field of loading and unloading auxiliary equipment and comprises a support frame, a power component is fixedly mounted on one side of the bottom of the support frame and comprises a second motor and a first motor, and a lifting mechanism is mounted on the other side of the support frame. The lifting mechanism comprises a fixed assembly, a movable assembly and a connecting rod, and the bottom of the fixed assembly is movably connected with the movable assembly through the connecting rod. And the height can be rapidly and accurately adjusted according to the heights of cargo compartments of different vehicles through the material guiding assembly, the fish basket does not need to be manually and frequently carried or the position of equipment does not need to be manually and frequently adjusted, manpower and time are greatly saved, and the loading efficiency is improved.

The invention provides a novel freshwater fish factory recirculating aquaculture system, which comprises a culture pond, a vertical flow precipitator, a microfilter pond, a biochemical air floatation pond, a sand cylinder filter, a nano denitrification system and a multi-stage air stripping system, the culture pond is respectively connected with the vertical flow precipitator and the microfilter pond, the vertical flow precipitator is connected with the microfilter pond, the biochemical air floatation pond is connected with the sand cylinder filter, the nano denitrification system is connected with the biochemical air floatation pond, and the multi-stage air stripping system is connected with the sand cylinder filter. The biochemical air floatation tank is connected with the microfilter tank through a pipeline, the biochemical air floatation tank comprises an air floatation bin, a pump bin, a biochemical bin and a denitrification bin, and the pump bin is respectively connected with the sand cylinder filter, the nano denitrification system and the multi-stage air stripping system through pipelines; and circulating pumps are arranged on pipelines for connecting the pump bin with the sand cylinder filter, the nano denitrification system and the multi-stage air stripping system. According to the invention, the multi-stage cooperative treatment system is constructed and the denitrification system is introduced, so that the total nitrogen removal rate of the culture system is increased to 96%, which is increased by 140% compared with that of the traditional system, the water supplementing amount of the system is reduced, the daily water supplementing amount is reduced to less than 3%, and the water saving rate of the total amount of circulating water exceeds 70%.

The utility model relates to the technical field of freshwater fish breeding, and discloses a reservoir ecological freshwater fish rotifer preying device which comprises a material tank, a lower floating block for providing buoyancy is arranged at the bottom of the material tank, a motor is fixedly installed in the middle of the top side of the material tank, and six sets of discharging openings are formed in the bottom wall of the material tank in an array mode. A feeding assembly used for assisting in feeding rotifers is arranged in the material tank, a triggering assembly used for triggering and starting the feeding assembly is arranged in the middle of the supporting plate, and a photovoltaic panel used for providing power for all the components is arranged on the outer side of the material tank. Fish schools can be attracted to gather through the bionic bait, when the fish schools bite the bait, the guide rod can be driven to move downwards, so that the contacts make contact with one another, then the motor can be started, the gear disc rotates to drive the rotating rod to rotate, and then the spiral discharging rod is driven to rotate in the discharging opening to assist in rotifer throwing; therefore, fish schools can prey conveniently, and waste is avoided.

The invention discloses agricultural freshwater fish feed throwing equipment which comprises a floating table, an angle adjusting motor is fixedly connected in the floating table, a mounting seat is fixedly connected to the output end of the angle adjusting motor, a throwing machine is fixedly connected to the mounting seat, a throwing mechanism is arranged in the throwing machine, and a sealing cover is rotatably mounted at the upper end of the throwing machine. A plurality of connecting arms are fixedly connected to the periphery of the floating table, threaded mounting holes are formed in the connecting arms, and threaded heads are mounted in the threaded mounting holes in a threaded mode. By utilizing buoyancy provided by the floating table and the floating ball, the device can directly float at the center of a water area, feed can be directly thrown at the center of the water area, the angle adjusting motor is started to drive the mounting base to rotate, the throwing machine is fixedly mounted on the mounting base, and then the mounting base rotates to drive the throwing machine to rotate; the throwing machine rotates to throw the feed around, and compared with an existing shoreside throwing mode, the throwing range is larger.

The utility model discloses a fish fry cultivation box for freshwater fish cultivation, belongs to the technical field of fish fry cultivation boxes, and solves the problem that fish fries are inconvenient to take out in an existing fish fry cultivation box. The device comprises a box body, a cultivation tank is contained in the box body, an oxygen supply assembly used for supplying oxygen to the cultivation tank is fixed to the bottom of the box body, lifting mechanisms are fixed to the two side walls of the box body, rotating mechanisms are fixed to the tops of the lifting mechanisms, the cultivation tank is fixed to the rotating ends of the rotating mechanisms, and the lifting mechanisms lift the rotating mechanisms to drive the cultivation tank to be separated from the box body. And the rotating mechanism rotates to drive the breeding tank to pour out fries in the breeding tank. The lifting mechanism is matched with the rotating mechanism, fry in the breeding groove can be automatically poured out, workers can conveniently take out the bred fry, labor intensity is reduced, the fry taking-out efficiency is improved, and operation is convenient.

The invention discloses a preparation method of soft minced freshwater fish gel, and belongs to the field of food processing. The preparation method comprises the following steps: S1, pretreating freshwater fish, and rinsing to obtain freshwater fish meat; s2, blending freshwater fish meat until no obvious particles exist, so as to obtain minced freshwater fish paste; s3, adding sodium chloride and xanthan gum into the minced fillet paste of the freshwater fish, and blending to obtain mixed minced fillet paste; and S4, heating and curing the mixed minced fillet paste, and cooling to obtain the freshwater fish soft minced fillet gel. The prepared soft minced freshwater fish gel has low hardness and good water retention capacity, meets the fifth-level standard of the IDDSI framework, not only meets the dietary requirements of special crowds such as dysphagia patients, but also provides multiple choices for development of dysphagia foods; the preparation method is simple, feasible, green, safe and suitable for industrial production.

The utility model discloses a granulator for processing freshwater fish feed, which belongs to the technical field of granulation equipment, and comprises fixed rods fixedly arranged on two sides of a feed inlet, connecting rings rotatably arranged on the fixed rods, placing grooves correspondingly arranged below the connecting rings, protective films stacked in the placing grooves, and the protective films are connected with the connecting rings. One end of the protective film is connected to the bottom of the containing groove, the other end of the protective film is connected to the connecting ring, and when the connecting ring rotates to the other side of the feeding port, the protective film covers the upper portion of the feeding port.

The utility model provides a cutter for removing red meat in raw freshwater fish processing, which solves the problem that the thickness is not easy to control when a manual kitchen cutter is used for cutting the red meat. The cutter comprises a cutter handle, a blade connecting body and two blades, the cutter handle extends in the left-right direction, and the right end of the cutter handle is detachably connected with the left side of the blade connector; the right side of the blade connector is rotationally connected with the left sides of the two blades, the blades are perpendicular to the right side face of the blade connector, the two blades are arranged in a front-back spaced mode, and cutting edge structures are arranged on the edges of the bottoms of the blades. The cutting edge structures at the bottoms of the blades can swing back and forth in a vertical interface to form an inner splayed space structure, so that the width between the cutting edge structures of the two blades can be adjusted; limiting structures are arranged at the connecting positions of the blades and the blade connecting bodies and used for fixing the angles of the blades after swinging, so that the width between the cutting edge structures of the two blades can be fixed.

The invention relates to the technical field of biological extraction, and particularly discloses a method for extracting active polypeptides from freshwater fish, which comprises the following steps: taking fresh freshwater fish bones, cleaning and homogenizing; deionized water containing mandelic acid is added into the homogenate according to the solid-to-liquid ratio of (3-5): 1, the deionized water contains 0.1-0.3 wt% of a mixture of D-mandelic acid and L-mandelic acid, and the weight ratio of the D-mandelic acid to the L-mandelic acid is (52-58): (0.3-0.7); stirring the mixed solution at a constant temperature of 47-52 DEG C, adjusting the pH value to 6.7-7.0, adding a compound enzyme preparation, and carrying out enzymolysis for 4-6 hours; nitrogen is introduced every 20-30 min in the enzymolysis process, and the introduction amount is 15-25 g / h; after enzymolysis is finished, heating enzymatic hydrolysate to 92-95 DEG C, maintaining enzyme deactivation for 8-12 min, adjusting the pH to be neutral, centrifuging for 10-15 min at the temperature of 4-10 DEG C and the speed of 7000-8000 r / min, and taking supernate to obtain active polypeptide; nitrogen is periodically introduced in the enzymolysis process to directionally activate phenolic hydroxyl groups of aromatic amino acids in freshwater fish active polypeptides, so that the phenolic hydroxyl groups become efficient electron donors, and the in-vitro oxidation resistance of the polypeptides is enhanced.

The invention belongs to the technical field of agricultural ecological breeding, and particularly relates to a rice-fish co-culture simulation method for first season rice and ratooning rice. The rice-fish co-culture simulation method comprises the following steps: selecting a rice variety and a freshwater fish variety; a separation net and grass-proof cloth are arranged in an open-air land parcel, and a combined device with a big barrel sleeved with a small barrel is adopted; performing disinfection, seed soaking, germination accelerating and seedling raising on the rice seeds, and transplanting the seedlings into a keg; performing water and fertilizer management and tillering regulation and control after transplanting; fry are put in the booting stage of the rice, feeding, water quality regulation and control and fish disease prevention and control are implemented; applying a bud promoting fertilizer after harvesting in the first season, and promoting the regeneration tiller to germinate after rehydration; harvesting in the yellow ripening stage of ratooning rice, and fishing. By means of the modular design that the small barrels are sleeved with the large barrels, rice is planted in the independent small barrels, ratooning rice management parameters such as the stubble height, the bud promoting fertilizer application amount and the rehydration time point can be controlled in a unified mode, interference caused by soil differences and weather changes under the field condition is eliminated, and it is ensured that the conditions of all treatment units are consistent.

The utility model relates to the technical field of freshwater fish culture, and particularly discloses a fish hatching device which comprises a base, a hatching box is installed on the base, and a water collecting tank is arranged on the periphery of the hatching box. The water spraying assembly is arranged at the top of the incubator and comprises a supporting frame connected with the incubator, and the driving motor is installed on the surface of the supporting frame; the water spraying assembly comprises a water spraying pipe and a supporting seat, the water spraying pipe is fixedly connected with an output shaft of the driving motor, a water inlet end is arranged on the surface of the water spraying pipe, one end of the supporting seat is rotationally connected with the water inlet end, and the other end of the supporting seat is fixedly connected with an external water pipe. The conical part is arranged, so that sewage can be conveniently discharged when the interior of the barrel is cleaned before roe hatching, fries can be conveniently put after roe hatching, and when a water source in the hatching box is continuously increased, the water source overflows from the top of the cylinder part, so that the flowability of the water source in the hatching box is kept, and the roe hatching rate is effectively increased.

The invention discloses a method for preparing functional peptide from protein in organic wastewater produced by freshwater fish paste, which comprises the following steps: introducing carbon dioxide into the organic wastewater without large particulate matters, and adding acetic acid to obtain blended organic wastewater; adding a ferric chloride solution into the blended organic wastewater, stirring for a period of time, then adding a chitosan solution, and continuously stirring for a period of time to obtain a mixed solution; centrifuging the mixed solution, collecting a supernatant, carrying out ultrafiltration and nanofiltration on the supernatant, and collecting a cut-off liquid; pressurizing and heating the cut-off liquid, preserving heat for a period of time, releasing pressure, cooling to room temperature, and adding protease into the cut-off liquid for enzymolysis treatment; and then carrying out nanofiltration by adopting a 400Da nanofiltration membrane, and desalting to obtain the functional peptide. According to the method, the dosage of a flocculating agent can be reduced by 40-50%, the dosage of enzyme can be reduced by 30-50%, and the service life of the membrane can be prolonged to more than 5 years; peptide products with specific functions can be directionally prepared; the wastewater treatment efficiency is improved, and the COD value is reduced by more than 90%.

This invention relates to the field of food technology and discloses a grass carp myofibrillar protein / rutin complex, wherein the mass ratio of grass carp myofibrillar protein to rutin is 1:0.01-0.3. This complex is mixed with an aqueous phase and an oil phase under high-speed shear, and after standing, an emulsion gel is obtained. This invention improves the utilization rate and application value of freshwater fish protein. Furthermore, the emulsion gel prepared using the grass carp myofibrillar protein / rutin complex has high stability. Using food-grade materials, it offers advantages such as high safety, wide application range, simple preparation method, and low cost.

The utility model relates to the technical field of freshwater fish culture, and discloses a freshwater fish culture tail water filtering device which comprises a filtering tank, a water inlet is fixedly installed on the surface of the filtering tank, a guide pipe is fixedly installed on the inner wall of the filtering tank, and a circular ring is fixedly installed on the inner wall of the filtering tank. By arranging a control assembly, in the rotating process of a scraping plate, impurities on the surface of a filtering plate can be scraped away, meanwhile, when a protruding block abuts against the tangent plane of a supporting rod, the supporting rod is stressed to slide into a connecting block, and a sliding rod fixed to the surface of the supporting rod slides in an arc-shaped groove formed in the surface of a rotating rod; the rotating rod can drive the winding wheel to rotate and wind the rubber rope, and the movable ring fixed on the surface of the rubber rope can be stressed to move on the surface of the scraper under the support of the first spring, so that impurities adhered to the surface of the scraper are scraped, and the situation that the subsequent tail water filtering effect is affected due to impurity retention is avoided.

The invention discloses a preparation method of mirror carp crisp chips with high surimi content and a product thereof, the preparation method comprises the following steps: taking mirror carp surimi as a main raw material, removing fish scales, heads, internal organs and fish skins of the mirror carp, rinsing, cutting into blocks, and mincing into surimi by using a meat mincer; adding table salt, white granulated sugar and sweet potato starch, continuously chopping and uniformly mixing, removing bubbles, and putting into a mold; cooking with steam to form, and freezing in a refrigerator; and cutting into slices with the same thickness by using a freezing slicer, and frying. The obtained surimi crisp chips have the advantages of being high in nutritional value and convenient to eat, and have certain significance for expanding the surimi product market and meeting the current food requirements of consumers. Mirror carps are widely used as freshwater cultured fishes in the world at present and are mainly sold fresh, and the processing level of the mirror carps is far lower than that of other aquatic products in China. The mirror carps are used as raw materials, and the method also has certain significance for improving the deep processing rate and the additional value of the low-value freshwater fish.

The invention discloses a method for preparing procollagen from freshwater fish. The method comprises the following steps: pressure treatment, physical crushing, mixing emulsification, homogenization, refrigeration, cleaning, extraction, homogenization, inactivation, homogenization and filtration. In the step of mixing and emulsifying, the freshwater fish tissue containing collagen is mixed with a surfactant, so that endotoxin is removed to be lower than 0.25 EU / ml. After adding an enzyme and an acid solution having a pH value of 3 to 6 to the pretreated tissue, the original collagen is extracted. According to the method, the endotoxin can be effectively reduced to be lower than 0.25 EU / ml through pretreatment of the freshwater fish tissue. According to the extraction technology disclosed by the invention, the denaturation temperature of the collagen can be increased while more original collagen is extracted and reserved, and the complete and compact triple-helix structure of the I-type original collagen is kept.

The present application provides a kind of track type bidirectional quantitative bait feeding device and method, device includes: track, be set on track and can walk on track and feed bait device and control unit, feed bait device includes frame, injection port, storage mechanism, feed mechanism, telescopic mechanism and walking drive mechanism, wherein, storage mechanism includes two bins and four weighing sensors;Feed mechanism includes primary discharge mechanism, primary discharge mechanism discharge port, secondary discharge mechanism, secondary discharge mechanism feed inlet and secondary discharge mechanism discharge port, primary discharge screw mechanism, secondary discharge screw mechanism, primary discharge motor and secondary discharge motor, primary discharge mechanism is installed in the upper of secondary discharge mechanism, bin lower end is connected with primary discharge mechanism;Telescopic mechanism is installed at the main body structure of secondary discharge mechanism;Walking drive mechanism is installed at the bottom of frame.The present application device and method are applicable to freshwater fish facility cultivation mode, installation is simple, and occupies small space.

This invention discloses a flavor peptide, its preparation method, and a method for adjusting the flavor of quick-brewed fish sauce, belonging to the field of biotechnology. The flavor peptide is extracted from fermented soybean paste. The flavor peptide is used to adjust the flavor of quick-brewed fish sauce: using freshwater fish and / or its processing by-products as raw materials, processing them into a meat paste, adding enzymes for enzymatic hydrolysis, inactivating the enzymes, adding the flavor peptide, inoculating with microbial agents for fermentation, and finally filtering and sterilizing to obtain the flavor-adjusted quick-brewed fish sauce. This method significantly improves the umami and thickness of quick-brewed fish sauce and harmonizes the taste and flavor of the fish sauce.

The invention discloses a low-fishy-smell freshwater fish byproduct minced meat rice mixing sauce prepared through coordination of clove spice and hot processing, and belongs to the technical field of food processing. The freshwater fish byproduct minced meat and the natural spice clove are introduced on the basis of the traditional Chinese rice mixing sauce. By adjusting ingredients and a hot processing technology, a rice mixing sauce product with excellent taste and longer shelf life is prepared. In the rice mixing sauce taking the minced freshwater fish as a main raw material and the clove as an auxiliary material, the contents of two key fishy substances, namely (E)-2-octenal and pyridine, are remarkably reduced, so that the process can effectively inhibit the fishy smell source and reduce the negative influence of the fishy smell on the overall flavor of the product. Meanwhile, the processing method can delay the generation rate of volatile basic nitrogen, so that the storage period of the product is prolonged. The fresh and sweet flavor of aquatic products is added to the traditional rice mixing sauce, the fishy smell of the minced freshwater fish is reduced, the storage time is prolonged, and the resource waste is reduced.

The utility model provides an experimental freshwater fish culture device, and belongs to the technical field of aquaculture. According to the structure of the device, a filling pump is arranged on an output pipe, a heater and a temperature sensor are arranged in a main water tank, an aeration disc is fixed to the inner bottom face of the main water tank, a plurality of filling pipes are connected to a filling pipe frame and extend into a plurality of breeding tanks respectively, and water pumping pipes are arranged in the breeding tanks. A plurality of water pumping pipes are connected to a water pumping pipe frame, the water pumping pipe frame is connected to the hard pipe section through a backflow pipe, and a water pump is arranged on the backflow pipe. According to the utility model, the distribution relation between the main water tank and each culture tank is constructed, when water in each culture tank needs to be changed, each valve and each water pump are opened, and sewage in each culture tank is replaced by clean water in the main water tank, so that an efficient and flexible water changing function is realized. When the overall cleanliness of the water in the system is obviously reduced, only the water in the main water tank needs to be changed; in addition, the filter located in the main water tank can prolong the water changing period of the main water tank.

The utility model discloses a freshwater fry separating device belongs to fry separating technical field, this separating device includes fry box, the inner wall sliding installation of fry box is with multiple isolation frame, multiple the inner wall of isolation frame is equipped with net plate, and the mesh of multiple net plate increases gradually from left to right, be equipped with locking assembly on the isolation frame, the lateral wall bottom of fry box is provided with a plurality of discharge pipes, be equipped with valve on the discharge pipe, the bottom of fry box is provided with recess, the inner wall sliding installation support plate of recess, the support plate bottom four corners fixed mounting universal wheel, be equipped with lifting assembly on the support plate, and the device can accurate grading separation fry, and net plate is easy to change, and isolation frame is adjustable, can conveniently remove, dustproof and convenient to observe, guarantee separating high efficiency and fry activity.

The invention relates to the technical field of green processing of aquatic food, in particular to a rinsing method for reducing the fishy smell of minced fillet and application. The rinsing method for reducing the fishy smell of the surimi comprises the following steps: performing first rinsing and second rinsing on the surimi; wherein a washing liquid for the first rinsing comprises water; a washing liquid for the second rinsing comprises a chitosan plasma activated aqueous solution. Compared with a traditional aqueous solution rinsing process, the chitosan-plasma activated aqueous solution rinsing process can significantly reduce the content of fishy smell substances in the minced freshwater fish. The process disclosed by the invention is short in time consumption, high in deodorization efficiency, capable of achieving a water-saving rinsing effect and beneficial to environmental protection.

The invention discloses a method for preparing a bionic abalone product from minced freshwater fish, which comprises the following steps: S1, carrying out air chopping and crushing on unfrozen minced freshwater fish, adding salt in proportion to carry out first mixing and chopping, then adding TG enzyme in proportion to carry out second mixing and chopping, and finally adding curdlan to carry out third mixing and chopping so as to obtain mixed minced fish; s2, injecting the mixed surimi prepared in the step S1 into a mold, and carrying out sectional heating treatment on the mixed surimi prepared in the step S1 to gelatinize the mixed surimi; and S3, demolding: cooling the mixed minced fillet heated in the step S2 to room temperature by adopting a strong wind cooling mode, so as to obtain the bionic abalone product. The bionic abalone product has balance of hardness, elasticity and tenderness, and has the taste of abalone.

The application belongs to the technical field of aquatic feed processing, and relates to a slow-sinking soft microparticle feed special for Pseudohemiculter tenuis and a preparation method thereof. The slow-sinking soft microparticle feed special for Pseudohemiculter tenuis is made of the following raw materials in parts by weight: fish meal 1000 parts, shrimp meal 200 parts, protein powder 1040 parts, alpha-starch 40 parts, multi-vitamin and multi-mineral premix 60 parts, sodium alginate 10 parts, betaine 10 parts, and soybean lecithin oil 120 parts. The slow-sinking soft microparticle feed special for Pseudohemiculter tenuis has comprehensive and balanced nutrition, good palatability and water stability, slowly sinks in water, is more in line with the feeding ecological law of Pseudohemiculter tenuis, and can effectively improve the survival rate and growth rate of the carnivorous freshwater fish, enhance the immunity of the fish, and reduce the deformity rate of the fish, so as to realize factory and large-scale seedling cultivation of Pseudohemiculter tenuis under land-based recirculating aquaculture conditions.