32 results about "Thunnus sp." patented technology

The invention discloses a tuna pond culture strategy optimization method and system based on meteorological influence analysis, and the method comprises the steps: collecting regional meteorological data and pond culture monitoring data, and constructing a multi-modal pond ecological feature vector; establishing a weather-water body dynamic coupling model by using a space-time diagram neural network, and generating water body situation response prediction information; a breeding regulation and control strategy is made based on the prediction information, and strategy self-adaptive optimization is achieved through real-time monitoring data; evaluating the anti-disaster capability of the tuna after the meteorological influence is finished, screening high-quality germplasm resources by combining genetic analysis, and generating an anti-disaster breeding scheme. According to the method, full-chain optimization from meteorological early warning to culture regulation and control to genetic breeding is achieved, and the climate toughness and economic benefits of tuna pond culture are comprehensively improved.

The invention relates to the technical field of aquatic product processing, in particular to an integrated low-loss processing method of tuna fillets. The method comprises the following steps: performing low-temperature radio-frequency quick thawing on cryopreserved tuna fish fillets, taking out the tuna fish fillets until the central temperature of the tuna fish fillets reaches 4 DEG C, and quickly cutting the tuna fish fillets into blocks; soaking the fish blocks in a composite fresh-keeping soaking solution at 3-5 DEG C, and performing low-temperature ultrasonic treatment; and washing the soaked fish blocks, draining the surfaces of the fish blocks, loading the fish blocks into a vacuum packaging bag according to specification requirements, vacuumizing, putting the vacuum packaging bag into a water bath kettle, carrying out temperature gradient type low-temperature curing, and taking out to obtain a cured finished product of the tuna fish fillet. Through combined application of a low-temperature radio-frequency quick thawing technology and a vacuum low-temperature low-loss curing technology, the obtained tuna fillet cured product not only ensures the quality of fish meat, but also effectively inhibits histamine increase and fat oxidation of the cured fish meat during low-temperature storage; the method is of great significance in promoting quality improvement and diversified development of tuna products.

The invention relates to the technical field of tuna product processing, and discloses a composite seasoning processing method for reducing the fishy smell of tuna products, which comprises the following steps: trimming, cutting and rinsing tuna raw materials to obtain tuna meat blocks, preparing a composite pickling solution, mixing the tuna meat blocks with the composite pickling solution at low temperature, standing, and then cooling to obtain the tuna products. The preparation method comprises the following steps: pickling tuna meat blocks to obtain pickled tuna meat blocks, carrying out high-temperature shaping treatment on the pickled tuna meat blocks, then carrying out forced cooling treatment to obtain cooled tuna meat blocks, and carrying out low-temperature drying treatment on the cooled tuna meat blocks to obtain the tuna product. The method solves the problems that when high-temperature baking is adopted in an existing tuna processing technology, the outer part is scorched and the inner part is generated due to uneven heating power, and the product quality is unstable and the taste is poor due to the fact that fishy smell substance residues cannot be fundamentally eliminated by depending on a traditional pickling method.

The invention provides a method for extracting goose carnosine and / or carnosine. The method comprises the steps of low-salt water extraction and high-salt water extraction under alkaline and heating conditions. The extraction method of the goose carnosine and / or carnosine provided by the invention is simple to operate, low in cost and easy for large-scale industrial use.

This invention provides a method for preparing tuna skin collagen peptide zinc ion chelate, belonging to the field of marine biological functional product processing. The method mainly involves hydrolyzing tuna skin using a complex protease to obtain collagen active peptides, and then chelating these active peptides with a zinc ion solution to finally obtain the tuna skin collagen peptide zinc ion chelate. The preparation method provided by this invention is simple and convenient to operate, low in cost, and has good safety. The yield of the chelate prepared by this invention is as high as 70% or more, the chelation rate is over 85%, and the molecular weight distribution of the chelate has a certain regularity, with the mass percentage of molecules with a molecular weight distribution of 3-5 kDa exceeding 49%. The chelate prepared by this invention, with active peptides chelated with zinc ions, can exert a synergistic effect, not only enhancing the biological activity of the original polypeptide components but also greatly reducing the toxic side effects caused by direct zinc ion supplementation.

Provided herein are altered cell lines comprising a suspension cell line adapted from an adherent cell line having a different expression profile from a corresponding non-altered adherent cell line, methods for generating altered cell lines, and methods of characterizing altered expression profiles for a gene, a transcript, or a protein in an altered cell line.

An in-vitro tissue model for use with a test article includes a tissue sample that includes homogeneous tuna meat having an isotropic thermal response, wherein the tuna meat is characterized by a plurality of visually distinct color states, each color state corresponding to a respective temperature to which the tuna meat has been heated within a range of 43° C. to 60° C., thereby providing a visual indication of the thermal effect of the test article within said range.

This invention belongs to the field of functional marine food processing technology, specifically involving a method for producing a composite sausage made from Antarctic krill, tuna, and collagen, comprising the following steps: (1) preparation of Antarctic krill meat, (2) preparation of tuna blood-infused meat, (3) preparation of low-temperature raw pork skin collagen paste, (4) preparation of krill-derived composite enzyme solution, (5) mixing of meat materials and low-temperature enzymatic hydrolysis, (6) low-temperature chopping, (7) sausage filling and quick-freezing, and (8) thawing and maturation of the product. This invention uses Antarctic krill meat, tuna blood-infused meat, and low-temperature raw pork skin collagen paste as core raw materials, and utilizes krill endogenous composite enzymes for low-temperature enzymatic hydrolysis to produce a composite sausage with uric acid-lowering function, high protein content, and high unsaturated fatty acid content, providing a safe, convenient, and daily-consumable functional marine food for people with hyperuricemia.

The invention discloses a fish peptide compound with anti-oxidation, anti-wrinkle and whitening functions as well as a preparation method and application thereof, belongs to the technical field of functional peptide application, and provides the fish peptide compound with the anti-oxidation, anti-wrinkle and whitening functions. Comprising 40 to 50 parts of fish collagen peptide, 36 to 40 parts of elastin peptide, 18 to 21 parts of collagen tripeptide, 14 to 17 parts of tuna active peptide, 5 to 6 parts of avocado extract, 2 to 4 parts of fish peptide and 2.6 to 3.0 parts of rye seed extract. According to the fish peptide compound with the antioxidant, anti-wrinkle and whitening functions as well as the preparation method and the application, the fish-derived functional peptide and the plant extract are reasonably compounded, all the components play a synergistic role, and the prepared fish peptide compound has the antioxidant, anti-wrinkle and whitening effects at the same time.

The present application belongs to the technical field of bioengineering, and particularly relates to a tuna fish bone antioxidant oligopeptide and a preparation method thereof.The tuna fish bone antioxidant oligopeptide has good scavenging activity, and has good thermal stability and digestion resistance; the mechanism of action is to promote the release of nitric oxide (NO), improve the levels of superoxide dismutase (SOD), glutathione peroxidase (GSH-PX), catalase (CAT) and total antioxidant capacity (T-AOC), and reduce the levels of malondialdehyde (MDA) and lactate dehydrogenase (LDH); JQYG-1 can protect HUVEC cells from oxidative damage induced by hydrogen peroxide; JQYG-1 can exert an antioxidant effect and protect vascular endothelial cells, and can provide a candidate drug for the prevention and treatment of cardiovascular and cerebrovascular diseases such as hypertension, coronary heart disease, cerebral thrombosis, myocardial infarction, atherosclerosis and heart failure.

The present application relates to aquatic transportation technology, and aims to provide a tuna larva live-keeping transfer device. The device comprises a core live-keeping system, a stress source control system and an intelligent centralized monitoring system arranged in a refrigerated container; the core live-keeping system comprises a fish tank main body, a water flow dynamics module and a water quality maintenance module, the stress source control system comprises an illumination module, a vibration and noise reduction module and an anti-collision module, and the intelligent centralized monitoring system comprises a camera monitoring module, a sensor array and a feedback control module; the fish tank main body is a closed oval ring-shaped pool body, a plurality of water inlets and outlets are uniformly arranged on the side wall, and are connected to a circulating water pump through pipelines respectively. The present application can meet the high metabolic demand of tuna larvae sustained swimming in a limited transfer water space, block the stress inducement of the whole transfer process from the source, realize the full closed loop intelligent control of the transfer process, reduce the stress reaction incidence and mechanical damage rate of tuna larvae, and improve the survival rate of long distance transfer.

The invention relates to the technical field of net cage fishing devices, and discloses a large-scale net cage fishing device for yellow fin tuna culture and a fishing method.The large-scale net cage fishing device comprises a piston rod fixedly connected to the inner wall of a piston sleeve, a plurality of water outlet holes are formed in the outer wall of the piston sleeve, and a plurality of through grooves are formed in the inner wall of the piston sleeve; a plurality of water outlet holes II are formed in the outer wall of the piston cylinder; when the bottom ring moves to the connecting rings, the connecting rings can be driven to move together, at the moment, along with movement of the connecting rings, the two adjacent connecting rings at the bottommost end can get close to each other, and at the moment, the piston sleeve and the piston barrel which are arranged between the two adjacent connecting rings also get close to each other; the piston cylinder can discharge the seawater in the piston sleeve through the water outlet hole, and the piston rod arranged in the piston sleeve can also discharge the seawater accumulated in the piston cylinder through the second water outlet hole when the piston sleeve and the piston cylinder get close to each other.

The invention discloses a tuna culture strategy optimization method based on a pond culture management platform, and the method comprises the steps: carrying out the monitoring of a target culture pond through a heterogeneous sensor network, obtaining the monitoring information of the culture pond, and carrying out the preprocessing of the monitoring information of the culture pond; based on the preprocessed monitoring information of the aquaculture pond, analyzing the feeding health condition of the aquaculture pond in a stable feeding stage in the target area, and judging whether aquaculture regulation and control need to be carried out or not; on the basis of the preprocessed monitoring information of the aquaculture pond, the tuna adaptation condition of the aquaculture pond in the fishing, transferring and recovering stage in the target area is analyzed, and an optimal transferring and recovering regulation and control strategy is formulated; the abnormal water quality change indexes and conditions after feeding are analyzed, whether the water quality control equipment is abnormal or not is judged when it is detected that the water quality is abnormal, maintenance early warning is carried out, and the comprehensiveness and intelligence of tuna pond culture are improved.

A feed for farming tuna species includes a body portion flattened with a length in a thickness direction orthogonal to a width direction and to a longitudinal direction, being shorter than a length in the width direction orthogonal to the longitudinal direction. The feed satisfies (A) and / or (B): (A) when a maximum length in the longitudinal direction is defined as a (mm), a maximum length in the width direction is defined as b (mm), and a maximum length in the thickness direction is defined as c (mm), a flattening ratio f1 calculated by Formula (1) is about 110 or greater: f1=a×b / c (1); and (B) when a volume of the feed for fish farming is defined as V (cm3), and an area of the feed for fish farming in a plan view is defined as A (mm2), (V / A)1 / 2 is about 0.110 or less.

The invention relates to the technical field of peptide preparation, and discloses tuna-sourced anserine with a uric acid reducing effect and a preparation method thereof.The preparation method comprises the following steps that back and abdomen meat of fresh tuna is selected and stirred into meat paste, then distilled water is added, water bath heating and cooling are conducted, and then filtering is conducted to obtain filtrate I; protease is added into the filtrate I for enzymolysis, after enzymolysis is completed, inactivation and centrifugation are conducted, and enzymatic hydrolysate is obtained; filtering the enzymatic hydrolysate with an ultrafiltration membrane to obtain a filtrate II; adding a corn stigma extracting solution into the filtrate II, adding a carbon source, a nitrogen source and a protective agent, inoculating strains for fermentation, and after fermentation is completed, filtering and sterilizing to obtain filtrate III; and freeze-drying the filtrate III to obtain the goose carnosine freeze-dried powder. According to the tuna-sourced goose carnosine with the uric acid reducing effect and the preparation method thereof, the xanthine oxidase inhibition rate of the prepared goose carnosine freeze-dried powder is larger than 70%, generation of uric acid is obviously reduced, and the preparation method is simple, safe and beneficial to wide application.

This invention discloses a specific DNA fragment, primers, identification method, and application for sex identification in yellowfin tuna. The specific DNA fragment has the following gene sequence: male as shown in SEQ ID NO.1 and female as shown in SEQ ID NO.2. Primers were designed based on the specific DNA fragment sequence for PCR amplification and Sanger sequencing analysis. The genotype at position 219 of the male yellowfin tuna DNA fragment is T / G heterozygous, and at position 292 it is A / G heterozygous. The genotype at position 219 of the female yellowfin tuna DNA fragment is T / T homozygous, and at position 292 it is A / A homozygous. This invention successfully achieves non-lethal sex identification during the fry or juvenile stage, which is beneficial for the implementation of asexual reproduction and seedling selection in yellowfin tuna, and has significant practical value and application potential.

The invention discloses a fillet anti-freezing and water-retaining polypeptide and a preparation method and application thereof.The preparation method comprises the steps that fish scales, residual fish meat and fat on tuna skin are removed, deionized water is added for homogenization after the tuna skin is cleaned and cut into pieces, and homogenate is obtained; performing magnetic stirring and centrifugation, taking supernatant liquid, performing centrifugation again, and drying the supernatant liquid to obtain crude protein; and adding deionized water into the crude protein to obtain a crude protein aqueous solution, carrying out enzymolysis, enzyme deactivation, pH adjustment and centrifugation, freeze-drying the supernatant, adding water to redissolve, and adjusting the concentration to 1-3 mg / mL to obtain the tuna skin anti-freezing water-retention polypeptide. The polypeptide can inhibit formation of ice crystals, reduce water loss and degradation of protein structures by the ice crystals, prevent secondary and tertiary structural changes of proteins in a freeze-thaw cycle, inhibit oxidation of myofibrillar proteins, reduce protein denaturation and fat oxidation, effectively guarantee the flavor and water binding capacity of fillets, prevent protein denaturation and improve the frozen quality of salmons.

The invention discloses a tuna bone and meat separation device, and relates to the technical field of fishbone processing mechanical equipment, the tuna bone and meat separation device comprises a fishbone cutting device, a feeding main plate is arranged in the middle of the rear end of the fishbone cutting device, a bone and meat separation device is arranged at the front end of the fishbone cutting device, and a discharging plate is arranged at the front end of the bone and meat separation device; a plurality of supporting legs are arranged at the bottom ends of the bone and meat separating device and the fish bone cutting device. According to the tuna bone and meat separating device, tuna bones can be cut through the two cutting rotary drums which are parallel up and down, the tuna bones can be tidily cut into a plurality of blocks, expansion arc plates can be expanded under the action of an electric push strip when the distance of the cutting rotary drums is changed, the expansion arc plates can be attached to the surfaces of the tuna bones all the time, and therefore the tuna bones can be separated from one another. And the distance between the two cutting rotary drums can be adjusted in a self-adaptive mode through the telescopic adaptive column and the transmission assembly, the self-adaptive capacity is achieved, and the fishbone cutting device can cope with fishbones of different conditions.

The invention discloses a preparation method of a gold-plated SERS (Surface Enhanced Raman Scattering) probe for detecting free basic groups and modifying Ag NCs on the surface and application of the gold-plated SERS probe to real-time monitoring of the quality of frozen tunas, and is characterized in that a gold-plated needle is cleaned, soaked in a sodium citrate solution and then soaked in an AgNCs solution to obtain the gold-plated SERS probe; the application for monitoring the quality of the frozen tuna in real time comprises the following steps: puncturing the gold-plated SERS probe into a frozen fish sample to be detected to obtain Raman spectrum data, preprocessing the Raman spectrum data, and respectively inputting the preprocessed Raman spectrum data into PLS models of five substances, namely adenine, guanine, cytosine, thymine and uracil; outputting concentration predicted values corresponding to the five basic groups in the frozen sample to be detected; and calculating the concentration values of adenine, guanine, cytosine, thymine and uracil in the frozen fish sample to be detected according to the linear relationship between the predicted value and the true value. The method has the advantages of simplicity, rapidness, and high sensitivity and accuracy.

The application provides a device and method for oxygen-free extraction of tuna oil, and mainly relates to the field of tuna oil extraction. The device for oxygen-free extraction of tuna oil comprises a reactor and a frame body, the reactor is rotationally connected with the frame body, a driving mechanism is arranged at the bottom of the frame body, the axis of the reactor is at an angle of 5-30 degrees with the horizontal plane, a column tube heater is fixedly installed on the central shaft, the liquid inlet and the liquid outlet of the column tube heater are located at the same end, the inner walls of the top and the bottom of the shell body are rotationally connected with the outer wall of the column tube heater, the top of the shell body is provided with a feeding port, the bottom of the shell body is provided with a discharging port, and a pressure maintaining port and a gas hole are further arranged on the shell body. The application has the beneficial effect that the tuna oil extraction efficiency and the quality stability can be significantly improved.

The invention relates to an intelligent control method and system for a tuna culture net cage, and belongs to the technical field of tuna culture. Working parameters of the transducer array are dynamically adjusted according to water environment characteristics of a water area where the current tuna culture net cage is located, and a tuna swarm distribution thermodynamic diagram is constructed, so that collision netting analysis of the water area where the current tuna culture net cage is located is estimated based on meteorological early warning characteristic data, and a collision netting risk analysis result is obtained; and finally, generating a tuna swarm distribution attraction scheme according to a netting collision risk analysis result, and performing fish swarm induction according to the tuna swarm distribution attraction scheme. The meteorological early warning characteristic data and the water environment characteristics of the water area where the tuna culture net cage is located at present are fully considered, so that the possible risks of netting damage, cultured fish escape and the like are analyzed, and the economic loss of culture is reduced.

The present application relates to a kind of offshore temporary culture tuna device and method, solve the existing sea catch tuna with ship temporary culture exists and is small, water flow velocity is limited, tuna activity is easily injured.The device is in the fish pool inside by side and is separated with long strip-shaped water inlet pool, the side of water inlet pool is arranged with several stay warehouses, the front mesh baffle of the stay warehouse is towards the front end of water inlet pool, the rear end of the stay warehouse is arranged with the mesh door plate that can be opened and closed, one end of the water inlet pool is provided with water pump, water is pumped from the fish pool to the water inlet pool, one end of the water inlet pool is also provided with air pump, the pool wall plate lower part of the water inlet pool side towards stay warehouse is provided with aeration device, air pipe is arranged between the air pump and aeration device.The present application reduces the impact damage generated by tuna movement, and through the way of excess aeration, using oxygen supersaturated water flow directly impact the head of tuna, can satisfy the breathing needs of tuna with lower water flow velocity.

The application discloses an artificial fish gathering device for tuna purse seine fishery, which comprises a floating base, a through slot is formed in the middle of the floating base, a top plate is arranged on the upper portion of the floating base, and the top plate is connected to the floating base through a vertical rod. A plurality of support frames are arranged below the floating base, each support frame comprises a frame body and an automatically overturnable floating rod, and a counterweight assembly is arranged at the lower end of the lowermost support frame. A rope is arranged at each corner of the floating base, one end of the rope is connected to the floating base, the other end of the rope is sequentially threaded through the counterweight assembly and the support frames, and then penetrates through the top plate, and is connected to a storage assembly at the upper end of the top plate. During recovery, the storage assembly winds up the rope, drives the counterweight assembly and the support frames to rise, and the support frames pass through the through slot to realize folding and storage. The application has the characteristics of automatic unfolding, convenient and efficient recovery, and reduced operation cost, and can effectively solve the problems of difficult recovery of the artificial fish gathering device and easy pollution of the marine environment.

The invention relates to a support structure for cutting tuna, comprising a base body (1) that includes an upper recess (4) having an opening delimited by a perimeter reinforcement (6), with an intermediate profile (7) extending through the opening, joined by the ends thereof to the perimeter reinforcement (6) of the upper recess (4). A vertical element (8) is aligned with a central area of the intermediate profile (7). A vertical support (10, 10') rises above the perimeter reinforcement (6) of the upper recess (4), and a moveable cantilevered carriage (11) is coupled to the vertical support (10, 10'), the carriage being height adjustable along the vertical support (10, 10'). The moveable carriage (11) is designed to hang the tuna (A), which is held by the tail using a clamp (12) coupled to the moveable carriage (11). The support structure is designed to hold the tuna (A) in a stable vertical position, hanging upside down from the moveable carriage (11), with the vertical element (8) of the base body (1) fitted inside the mouth of the tuna (A), keeping same immobile.

The application discloses a kind of offshore net cage culture tuna reinforced feeding method.The method is detailed fish body nutrient composition and food habit analysis by different specifications, season tuna is caught in the wild, simultaneously establish a variety of bait fish nutrient composition database, on this basis, establish the correlation model of tuna precision nutrition deployment system, according to the diet preference and nutritional requirement of different stages tuna, automatically match suitable bait fish and its reinforced nutrient substance, realize scientific, precision nutrition collocation, and according to real-time environment and breeding conditions, adjust bait formula.Meanwhile, with the help of fish population monitoring system and water quality monitoring system, timely find fish population abnormal behavior and water quality abnormal situation, timely send early warning, take corresponding measures to prevent and treat disease.The application can realize scientific nutrition collocation of tuna, realize efficient, precision feeding of tuna, and effectively prevent the occurrence of tuna disease, improve the breeding benefit of tuna.

The invention discloses a tuna pond multi-fish culture evaluation method and system based on ecological analysis, and the method comprises the steps: synchronously collecting the ecological data and video stream data of a culture water area through the deployment of a sensor and a camera device; dividing a multi-fish culture cycle into a plurality of time points, calculating ecological differences based on ecological data, extracting video association frames, adopting a YOLOV5 model to identify fish school behavior characteristics, and constructing an ecological difference sequence containing time sequence information and a behavior difference sequence; vectorization processing is carried out on the difference sequence, time sequence information is reconstructed through a K-medoids clustering model, and an optimal time sequence is generated; and importing the optimal time sequence into an LSTM prediction model, respectively establishing an ecological anomaly prediction sequence and a behavior anomaly prediction sequence, and realizing dynamic evaluation and early warning of the breeding state. According to the method, through multi-modal data fusion and time sequence information reconstruction technologies and in combination with a deep learning model, the prediction precision of ecological abnormality and culture risks in a multi-fish polyculture environment is effectively improved, and a technical support is provided for intelligent mixed culture management.

The invention discloses a tuna polyculture steady-state mode analysis method based on environment characteristic analysis. The method comprises the following steps: acquiring environment parameters of a multi-source polyculture pond and constructing polyculture state description characteristic vectors; clustering tuna polyculture environment modes according to the polyculture state description feature vectors to obtain polyculture environment mode labels and corresponding environment feature space ranges; acquiring a historical fish school polyculture observation data set, performing polyculture steady-state index modeling, and analyzing the polyculture situation category of each polyculture environment mode label; establishing a mapping rule of an environment mode and regulation and control parameters by using a random forest decision tree, and constructing a polyculture environment management and control decision model; and obtaining polyculture environment data and real-time fish school observation data of the target tuna polyculture pond, executing a real-time regulation and control decision in the polyculture environment management and control decision model, and generating a polyculture environment regulation and control strategy. Therefore, the culture benefit of tuna culture in the pond and the timeliness and effectiveness of regulation and control in the culture process are improved.

The invention relates to the technical field of marine cage culture equipment, and discloses a yellow fin tuna cage culture state monitoring device, which comprises a main body and a waterproof camera, and further comprises a maintaining mechanism, the maintaining mechanism is arranged at the bottom of the main body, and the maintaining mechanism can form certain adsorption force on the water surface through operation. According to the invention, due to adsorption force formed between the bottom of the control panel and the sea surface, a connecting column in the control panel is driven by the control panel to rotate to a certain extent, so that a waterproof camera at the bottom of a collecting barrel is kept in a state of being perpendicular to the sea surface, and when a main body is jacked up by sea waves and fluctuates up and down, the control panel firstly shakes up and down along with the main body; at the moment, the top of the control panel can be blocked by seawater to generate resistance, the control panel can move downwards relative to the position of the main body under the influence of the resistance, displacement and shaking of the waterproof camera generated when the main body is influenced by waves are reduced through the arrangement of the control panel, and therefore the stability during cage culture state monitoring is improved.

The application provides a kind of iron-binding peptide based on tuna blood meat, wherein the amino acid sequence of some polypeptides is SEQ ID NO:1-6.The polypeptide provided by the application can be used to prepare a preparation for treating iron deficiency anemia.The tuna red meat blood peptide provided by the application can be used to prepare a blood supplement preparation, and through specific polypeptide iron ion chelation, a high-bioavailability organic iron complex is formed, which significantly improves the absorption efficiency of iron in the intestinal tract.The carrier formed by the polypeptide can protect iron ions from being destroyed by gastric acid and target delivery to the absorption site, so that the hemoglobin synthesis efficiency is increased by more than 40%.The natural polypeptide ligand of the application avoids the gastrointestinal irritation of traditional iron supplements and is not affected by dietary factors such as phytic acid and tannin absorption interference.Functional blood supplement peptides are prepared from tuna processing by-products, which not only realizes the high-value utilization of fishery resources, but also provides an ecological-friendly new source of iron supplement.

This invention relates to the field of food processing technology, specifically a process for transforming and preserving the nutrients in tuna meat. The process includes the following steps: first, selecting fresh, high-quality, disease-free tuna, ensuring the integrity of the fish; performing a third acid removal process followed by marinating; and finally, vacuum packaging and high-temperature sterilization. This invention, through three acid removal processes, effectively removes acidic substances from the tuna meat, resulting in firmer meat, a non-sour taste, and improved edible quality. It offers diverse flavors: original, pepper, and spicy, catering to different consumer tastes. The vacuum processing and high-temperature sterilization not only achieve sterilization and preservation but also stimulate fundamental changes in the tuna meat, restoring the pigmentation state of red blood cells and effectively preserving the nutritional components of the tuna, making the nutrients more easily absorbed by the human body.