996 results about "Aquatic product" patented technology

The invention discloses an aquaculture comprehensive guarantee method and system based on multi-modal data acquisition, and relates to the technical field of intelligent aquaculture, and the method comprises the steps: collecting aquaculture multi-modal data and an aquaculture image of an aquaculture region, carrying out the aquaculture feature capture of the aquaculture image, and outputting a visual feature group; inputting the visual feature group into a MobileNet lightweight model, and outputting a health state label and a confidence score; based on the health state label and the confidence score, outputting disease type data through a residual network structure optimized by transfer learning; constructing a graph neural network according to the disease type data, and generating a dynamic regulation and control scheme; and the control center executes the dynamic regulation and control scheme, carries out regulation and control effect detection and target comparison on the aquaculture area of the dynamic regulation and control scheme, judges whether the regulation and control effect is effective or not, and generates a feedback regulation instruction. According to the invention, through multi-modal data fusion and intelligent decision closed loop, dynamic and accurate guarantee of aquatic product health management is realized.

The invention relates to the field of cold-chain transportation, and discloses an aquatic product cold-chain quality monitoring and tracing method, which comprises the following steps: acquiring multivariable environmental data in cold-chain transportation; based on the multivariable environment data, constructing a dynamic coupling model of a cold chain environment for representing a nonlinear dynamic relationship among environment variables; performing real-time estimation on the cold chain environment state by using a dynamic monitoring algorithm, and predicting the future change of the cold chain environment state; constructing a target function, and optimizing the operation parameters of the cold chain equipment according to the dynamic change of the cold chain environment; constructing a mapping model between the cold chain environment and the aquatic product quality, and dynamically evaluating the quality index of the aquatic product according to the historical change of the environment; and generating a traceability report based on the evaluation result, wherein the traceability report comprises a dynamic record of the cold chain environment and an aquatic product quality change curve. Dynamic monitoring, quality tracing and system optimization of the whole cold-chain transportation process can be realized, and the stability of the cold-chain environment and the aquatic product quality guarantee capability are improved.

The invention relates to a preparation method and application of a carbon dot-based nano enzyme. The preparation method of the carbon dot-based nano-enzyme comprises the following steps: taking sucralose and B vitamins as raw materials, and preparing the carbon dot-based nano-enzyme through a one-pot hydrothermal method. The preparation method of the carbon dot-based nano-enzyme provided by the invention is simpler in catalytic condition and higher in safety. The carbon dot-based nano-enzyme prepared by the invention has the advantages of high oxidase-like activity, low drug resistance, high biocompatibility and the like, can inhibit multi-drug-resistant bacteria, and can be applied to the aspects of aquatic product preservation and the like.

The invention belongs to the technical field of microorganisms, and discloses a high-temperature-resistant vibrio alginolyticus bacteriophage and a composition and application thereof, the high-temperature-resistant vibrio alginolyticus bacteriophage is named as vibrio alginolyticus bacteriophage PJ644 and is preserved in China General Microbiological Culture Collection Center on August 16, 2024, the preservation address is No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC NO.9624. The preservation number of the strain is CGMCC (China General Microbiological Culture Collection Center) No. The bacteriophage has excellent high temperature resistance, and the bacteriophage and the bacteriophage composition not only can effectively prevent and treat various vibrio infections, but also can be used as active ingredients for preparing bacteriophage pharmaceutical preparations, aquatic feed additives, water disinfectants and aquatic product preservatives, and are used for effectively preventing and treating diseases caused by vibrio infections in aquaculture farms. The use is safe, and the problems of antibiotic residues and pathogen drug resistance caused by use of antibiotics are effectively avoided.

The invention discloses a compound micro-ecological preparation for aquatic products as well as a preparation method and application thereof, and belongs to the technical field of micro-ecological preparations. The microecological preparation disclosed by the invention comprises clostridium butyricum, bacillus licheniformis, enterococcus faecalis and lactobacillus plantarum. The microecological preparation is combined with concentrated cottonseed protein for use, can replace fish meal, is added into feed, can remarkably improve the immunocompetence, oxidation resistance and digestive enzyme activity of animals, and can improve the relative abundance of beneficial bacteria in intestinal tracts, inhibit the growth of pathogenic bacteria and regulate the microecological balance of the intestinal tracts after entering the intestinal tracts of the animals. According to the invention, aerobic bacteria and anaerobic bacteria are cooperatively used, oxygen in the surrounding environment is greatly consumed by bacillus licheniformis and enterococcus faecalis, the proliferation of beneficial bacteria such as clostridium butyricum and lactobacillus plantarum is promoted, and the probiotic effect is fully played.

The invention relates to bacillus for producing lipopeptide, bacteriostatic lipopeptide of the bacillus and application of the bacillus to aquatic products, and belongs to the technical field of microorganisms. The bacillus velezensis is a bacillus velezensis strain FJAT-57093, is preserved in the China General Microbiological Culture Collection Center on April 1, 2025, and has a preservation number of CGMCC No. 34063, and the bacillus velezensis strain FJAT-57093 is a bacillus velezensis strain FJAT-57093, is preserved in the China General Microbiological Culture Collection Center on April 1, 2025, and has a preservation number of CGMCC No. 34063. The bacteriostatic lipopeptide is prepared from three types of lipopeptides, namely, iturin, fengycin and surfactin. The invention further discloses a preparation method of the bacteriostatic lipopeptide. The bacillus and the bacteriostatic lipopeptide have a broad-spectrum bacteriostatic effect on aquatic pathogenic bacteria, can be used for aquaculture, and have a wide application prospect.

The invention belongs to the technical field of aquatic product living body transportation, and particularly relates to a soft-shell crab transportation method. The method comprises the following steps: screening and cleaning, softening-keeping treatment, fresh-keeping treatment, microenvironment regulation and treatment after transportation. In the softening treatment, 0.1-3 PSU low-salt seawater containing 0.03%-0.08% of tetrasodium glutamate diacetate is used for soaking / covering, the fresh keeping is ethanol disinfection and 0.05%-0.30% of lemon grass oil emulsified spray, the temperature of the microenvironment is controlled to be 12-18 DEG C, the humidity is 85%-95%, and the oxygen content is 20.90-22.30%. After 72 hours of simulated transportation, the softness-keeping maintenance rate is greater than or equal to 88%, the survival rate is greater than or equal to 98%, the body surface bacterial colony inhibition rate is 91.4%, and the TVB-N value is 15.2 mg / 100g. The method realizes the synergy of softening, fresh keeping and live keeping, is suitable for large-scale transportation, and has high popularization value.

The present application relates to the technical field of aquaculture monitoring and regulation, and discloses a water quality multi-parameter real-time online monitoring system. The system comprises a multi-source data acquisition module for obtaining and denoising water quality data; a time sequence feature analysis module for generating multi-dimensional feature clusters containing the correlation of various parameters; an anomaly identification module for dynamic deviation compensation, monitoring sub-domain demarcation and key parameter extraction; a collaborative regulation module for constructing a regulation decision unit to generate a multi-parameter collaborative regulation strategy; and an iterative correction module for correcting the regulation strategy to output real-time adjustment instructions. An early warning module is also provided for biological safety assessment and early warning and activation of the emergency intervention mechanism. The system can accurately monitor the multi-parameters of the water quality of aquaculture in real time, realize intelligent regulation and biological safety early warning, effectively improve the yield and quality of aquaculture, reduce the risk of aquaculture, and promote the sustainable development of the industry.

The invention relates to the technical field of aquaculture monitoring, regulation and control, and discloses an aquatic product water quality multi-parameter real-time online monitoring system. The system comprises a multi-source data acquisition module for acquiring and denoising water quality data; the time sequence feature analysis module is used for generating a multi-dimensional feature cluster group containing a plurality of parameter association relationships; the abnormity identification module is used for carrying out dynamic deviation compensation, delimiting a monitoring sub-domain and extracting key parameters; the coordinated regulation and control module constructs a regulation and control decision unit to generate a multi-parameter coordinated regulation and control strategy; and the iterative correction module is used for correcting the regulation and control strategy and outputting a real-time regulation instruction. And an early warning module is also arranged to carry out biological safety evaluation and early warning and activate an emergency intervention mechanism. The system can accurately monitor multiple parameters of aquaculture water quality in real time, realizes intelligent regulation and control and biological safety early warning, effectively improves the yield and quality of aquaculture, reduces the aquaculture risk, and promotes the sustainable development of the industry.

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 provides an aeromonas hydrophila bacteriophage vBAhM7 and application thereof, and belongs to the technical field of microorganisms. According to the invention, aeromonas hydrophila is taken as host bacteria, a bacteriophage vBAhM7 is separated from sewage at a water inlet of a sewage treatment plant, and the titer can reach 109 PFU / mL; the tolerable temperature is 30-70 DEG C, and the high-temperature-resistant property is good; when the pH value is 3-12, the activity is relatively high, and the acid-base tolerance is good; the bacteriophage is not sensitive to chloroform, has no lipid coating on the shell, is stable in structure, and can resist the damage of organic solvents; the inhibition rate range on the host bacteria biofilm is 36.0%-68.6%, and good host bacteria biofilm inhibition capability is achieved; the in-vitro sterilization effect on host bacteria is good, and a relatively strong inhibition effect is achieved; the zebra fish can be protected; the antibacterial agent can be used for preventing and controlling aeromonas hydrophila in aquatic products, and the use of antibacterial agents in aquaculture is avoided or reduced.

The invention relates to the technical field of aquatic product freezing processing, and discloses a prawn freezing process dynamic regulation and control method and system, and the method comprises the steps: extracting a damage feature vector through a lightweight instance segmentation network; generating a lightweight knowledge graph based on knowledge distillation; the damage features are converted into symbolic representation, and neural symbolic reasoning is carried out; calculating a quality degradation risk index and generating a differential control parameter; and collecting feedback data and updating the weight of the knowledge graph. According to the method, the technical problems of low response speed and poor interpretability in the freezing process of the damaged prawns are solved, and millisecond-level real-time decision and accurate control are realized.

The invention discloses a feed for improving the flavor of broiler chickens and a preparation method of the feed, and belongs to the technical field of poultry feeds and feed preparation. Comprising the following components in parts by weight: 55 to 65 parts of basic ration, 35 to 40 parts of sea buckthorn pomace and bean dreg combined ferment, 3 to 5 parts of aquatic product leftover enzymatic hydrolysate, 3.5 to 4.0 parts of trehalose, 1.0 to 1.5 parts of ground cinnamon, 1.0 to 1.5 parts of xylooligosaccharide, 0.8 to 1.0 part of choline, 0.0001 to 0.0002 part of organic selenium and 0.01 to 0.02 part of folic acid. The mass ratio of the choline to the aquatic product leftover enzymatic hydrolysate is 1: (3.0-5.6); the mass ratio of the organic selenium to the sea buckthorn pomace and bean dreg combined fermentation product is 1: (58-100); the sea buckthorn pomace and bean dreg combined fermentation product is prepared by respectively pretreating sea buckthorn pomace and bean dregs and then carrying out aerobic, facultative and anaerobic continuous three-stage fermentation. The technical limitations that flavor substances of traditional feed are easy to inactivate and the utilization rate of agricultural by-products is low are broken through, and the breakthrough of flavor quality upgrading, efficient resource conversion and breeding benefit optimization is achieved.

The invention relates to the technical field of aquatic product processing machinery, and discloses a chain type scaling and fish killing machine which comprises a machine body, and the machine body is sequentially provided with a fish feeding guide piece, a fish killing piece, a fish killing piece and a fish killing piece from top to bottom, the movable scale scraping piece is used for scraping scales on the two sides of the fish body; the first pressing and conveying part is used for clamping and downwards conveying the fish body; the belly and back scale scraping piece is used for scraping scales on the belly and the back of the fish body; the second pressing and conveying part is used for continuously clamping and downwards conveying the fish body; the cutting piece is used for cutting the conveyed fish body; the material receiving opening is formed in the lower part of the machine body; wherein the first pressing and conveying piece and the second pressing and conveying piece are arranged above and below the belly and back scaling piece respectively, and a continuous clamping and conveying path is formed. The invention relates to an up-down feeding type fish killing machine which can adapt to fishes with different sizes, can scrape scales thoroughly and can operate continuously.

The invention belongs to the technical field of food processing. The invention discloses a method for targeted determination of an optimal composite combination for masking reheating peculiar smell of prefabricated aquatic products by using terpene compounds. The method is characterized by comprising the following steps: (1) selecting peculiar smell compounds; (2) carrying out molecular docking on the odor compound and an olfactory receptor to obtain a key olfactory receptor; (3) combining the terpene compound and the odor compound, and performing binary molecular docking with the key olfactory receptor to obtain a typical terpene compound capable of masking reheating odor; (4) obtaining an odorless substrate; (5) taking the prepared odorless substrate as a medium to obtain a key terpene compound with a masking effect; (6) determining the theoretical minimum inhibition concentration of peculiar smell; and (7) obtaining an optimal compound combination capable of effectively inhibiting reheating peculiar smell and keeping the original flavor of the aquatic products. The optimal composite composition obtained by the method can effectively mask characteristic peculiar smell generated in the reheating process of the prefabricated aquatic product, and can well maintain the original flavor of the aquatic product.

The invention discloses a processing method for preparing salt-reduced instant fish sausages by adding salted egg white powder, and belongs to the technical field of deep processing of aquatic products and high-value utilization of poultry egg byproducts. The preparation method comprises the following steps: chopping minced fillet, adding salted egg white powder and ice water, mixing and chopping to obtain minced fillet sol, filling the minced fillet sol into a casing, and performing two-stage heating gelation, high-temperature sterilization and cooling to obtain the instant fish sausage which can be stored for a long time at normal temperature. The quality of the instant fish sausage is remarkably improved by utilizing the salt content and the gel performance of the salted egg white. The method disclosed by the invention not only realizes high-value utilization of the salted egg white, but also reduces the treatment cost of the salted egg processing byproducts. And the adopted process route is compatible with the traditional fish sausage production, does not need major equipment transformation, is easy to realize industrial popularization, is beneficial to the healthy, convenient and diversified development of minced fish products, and conforms to the concept of pursuing healthy diet of consumers.

The invention relates to the technical field of aquatic product preservation, and discloses a natural eutectic solvent for maintaining the quality of frozen penaeus vannamei boone and application, the natural eutectic solvent is composed of choline chloride, sorbitol and water, the molar ratio of choline chloride to sorbitol is (1-5): (1-5), and the mass of water is 15-25% of the total mass of choline chloride and sorbitol. The invention also provides an application of the solvent, and the application comprises the following steps: soaking the penaeus vannamei meat in the solvent, and then freezing and storing the penaeus vannamei meat. A supramolecular network system is constructed through hydrogen-bond interaction between choline chloride and sorbitol, growth of ice crystals in the freezing storage process is inhibited, a protein structure is stabilized, and loss of unfrozen juice is reduced, so that the quality of the penaeus vannamei, such as texture, color and flavor, is maintained. The natural deep-eutectic solvent is natural and safe in component, low in heat, simple to prepare and convenient to apply, the application limitation of a traditional anti-freezing agent is solved, and the natural deep-eutectic solvent has a good industrial prospect.

The invention relates to the related field of food freezing, in particular to a high-frequency alternating electromagnetic field assisted low-temperature saline solution spraying and freezing device and method, and the device comprises a continuous conveyor, a first single-mode resonant cavity, a first spraying system, a second spraying system, a second single-mode resonant cavity, a third spraying system and the like. According to the method, food is treated by adopting a two-section high-frequency alternating electric field, the first section is pretreatment for adjusting a water molecule structure in the food to facilitate heat transfer freezing, and the second section is a latent heat release stage of a maximum ice crystal band to accelerate ice crystal nucleation in the food, so that the size of ice crystals generated in the freezing process of aquatic products is reduced, and the freezing efficiency of the aquatic products is improved. The texture level, the taste and the water holding rate of the aquatic products are improved, and the freezing storage time of the aquatic products is effectively prolonged.

The invention relates to the technical field of agricultural fertilizers, in particular to an enzymolysis fish protein type amino acid-containing water-soluble fertilizer and a preparation method thereof, the fertilizer is prepared from 50-70% of enzymolysis fish protein stock solution and other components; the stock solution is prepared by pulping aquatic product processing leftovers, adjusting the pH value to 6.5-7.5, adding specific compound protease for enzymolysis, and performing enzyme deactivation and centrifugation; the macroelement liquid contains nitrate nitrogen and ammonium nitrogen (2: 1-4: 1), and the microelement chelating agent is prepared by reacting a stock solution small molecule peptide with a specific salt. The fish protein enzymolysis stock solution is prepared from aquatic product processing leftovers, high-proportion small molecule peptide and amino acid are obtained through specific enzymolysis and other processes, and by matching with high-content macroelements in a specific nitrogen form, nutrition can be rapidly supplemented, and crop photosynthesis and dry matter accumulation can be improved; and moreover, all the components cooperate to regulate the growth of the crops and improve the stress resistance, and the surfactant also improves the utilization rate of the fertilizer and reduces waste.

The utility model discloses an aquatic product fry breeding device which comprises a bracket seat and a breeding groove, a filter screen assembly is fixedly installed on the inner side of the upper portion of the breeding groove, a first upper connector and a second upper connector are arranged on the outer side of the breeding groove, the first upper connector is connected with a drainage pipeline, the second upper connector is connected with a filtering circulation assembly, and the lower portion of the breeding groove is a conical bottom shell. The conical bottom shell is provided with a bottom connector and a side connector, the bottom connector is connected with a seedling emergence pipeline and a water inlet pipeline, the side connector and the bottom connector are connected through an anti-sinking pipeline, the water inlet pipeline is connected with a filtering circulation assembly, an inflation pipe with the bottom end connected with an air stone in an inserted mode is fixed in the cultivation tank, and the air stone is located at the bottom of the conical bottom shell. A drainage control valve is mounted on the drainage pipeline, a first water inlet control valve, a sterilization device and a second water inlet control valve are mounted on the water inlet pipeline, and a seedling emergence control valve is mounted on the seedling emergence pipeline. By the adoption of the device, the water changing amount can be reduced, pathogenic organisms can be killed, water quality is purified, and the survival rate of aquatic fry is increased.

The invention discloses an aquatic product cold chain supply chain network construction method based on a multi-objective optimization algorithm, and belongs to the field of cold chain supply chain network construction, and the method comprises the following steps: S1, integrating a closed-loop supply chain structure and multi-dimensional parameters, and defining a network physical framework and quantitative attributes; s2, constructing a multi-target multi-constraint model; s3, updating the multi-target multi-constraint model; s4, solving the updated multi-target multi-constraint model to obtain an optimal solution; s5, correcting the optimal solution in real time, and triggering the optimization of the multi-target multi-constraint model; and S6, evaluating the corrected optimal solution, and determining a final solution according to an evaluation result. By adopting the aquatic product cold chain supply chain network construction method based on the multi-objective optimization algorithm, a closed-loop cold chain network considering economic, environmental and social objectives is constructed by integrating the multi-objective optimization algorithm, Internet of Things dynamic monitoring and mixed meta-heuristic solution, collaborative optimization of static planning and dynamic adjustment is realized, and the economic, environmental and social benefits are improved. And demand fluctuation and transportation disturbance are effectively adapted.

The invention discloses a probiotic double-layer coating film applied to aquatic products and a preparation method of the probiotic double-layer coating film, and relates to the field of aquatic product processing and preservation. The method comprises the following specific steps: preparing a film coating solution A and a film coating solution B, soaking an aquatic product in the film coating solution A containing lactobacillus rhamnosus and lactobacillus plantarum for primary film coating, drying, and soaking the aquatic product in the film coating solution B containing zein for secondary film coating. Wherein the coating solution A is prepared by mixing a lactobacillus rhamnosus culture solution and a lactobacillus plantarum culture solution, dissolving sodium alginate in a pre-fermented mixed culture solution, uniformly stirring, adding sterile glycerol, and fully and uniformly mixing; the film coating solution B is prepared by dissolving zein in ethanol, stirring at 50-60 DEG C for 1-2 hours, then adding sterile glycerol, fully and uniformly mixing, and cooling to room temperature. The aquatic products are treated by adopting a probiotic double-layer coating film, so that the aquatic products have a fresh-keeping effect and a probiotic effect, water loss of the aquatic products can be delayed, flavor substances in the aquatic products can be prevented from volatilizing, microorganism growth and protein oxidation in the storage period can be inhibited, and odor and taste deterioration in the storage process of the aquatic products can be delayed; the storage quality of aquatic products is effectively improved and the shelf life is prolonged.

The invention relates to the technical field of aquaculture, in particular to an aquatic product oxygen supply self-adaption method and system based on multi-source data, and the method comprises the steps: obtaining the abnormal behavior related data of a fish school in an anoxic region, building an abnormal feature recognition model according to the abnormal behavior related data of the fish school, extracting the abnormal features in the abnormal behavior related data of the fish school, and carrying out the recognition of the abnormal features. Inputting the abnormal features as input data into an abnormal feature recognition model, and outputting an abnormal behavior probability and a target advance according to an abnormal recognition process; and executing a pre-oxygenation judgment process according to the abnormal behavior probability and the target advance. Through combination of the three-dimensional oxygen distribution map and the abnormal feature recognition model, intelligent judgment of the fish school abnormal behavior probability and the target advance is realized, and pre-oxygenation intervention is performed before an oxygen deficit risk occurs according to the fish school abnormal behavior features; and the application range of the recognition model is expanded through an online learning expansion mechanism, so that self-adaptive distributed oxygen supply control is realized.

The invention discloses an aquatic product breeding feed capable of improving flavor and a preparation method thereof, and particularly relates to the technical field of breeding feeds, the feed comprises fish meal, soybean meal, soybean protein concentrate, shrimp meal, chicken meal, wheat flour, cuttlefish paste, phospholipid, grease, mineral substances, vitamins, lettuce polyphenol, an antioxidant, a mildew preventive and the like. Wherein the lettuce polyphenol is a key functional component. The preparation method comprises the following steps: pretreating the raw materials, mixing step by step, adding grease by spraying, tempering, granulating, drying, screening, spraying the antioxidant and the like. The lettuce polyphenol regulates and controls an mTOR signal channel to promote flavor amino acid deposition and inhibit protein degradation, meanwhile, the intestinal microecology is improved, the antioxidant capacity and digestive enzyme activity are enhanced, and the content of flavor substances such as glutamic acid and glycine in aquatic products is remarkably increased. The method is suitable for culturing various aquatic products, and can effectively improve the flavor and quality of the cultured aquatic products.

The invention belongs to the field of microorganisms, and discloses bacillus velezensis and application thereof in prevention and treatment of plant fungal diseases. The bacillus velezensis disclosed by the invention is bacillus velezensis YC46, is preserved in the China General Microbiological Culture Collection Center (CGMCC), and has the preservation number of CGMCC No.33975. The bacillus velezensis can grow by taking leftovers in an aquatic product processing process as a unique nutrient source, and has the advantages of high yield, low cost and the like. The bacillus subtilis has the antibacterial activity on plant pathogenic fungi such as fusarium oxysporum, botrytis cinerea, alternaria alternata, colletotrichum gloeosporioides and penicillium, thalli or fermentation products of the thalli can be used as active ingredients for preparing biocontrol microbial agents or bacteriostatic agents for preventing and treating plant fungal diseases, and the bacillus subtilis has good application value and ecological environmental protection value.

The invention belongs to the technical field of aquatic product processing, and discloses a shell opening solution for Fujian oysters and application. The invention provides a shell opening solution for Fujian oysters. The shell opening solution comprises a magnesium chloride solution with the concentration of 0.5 mol / L-0. 6 mol / L and / or a glucose solution with the concentration of 0.5 mol / L-0. 6 mol / L. The shell opening solution is used for conducting living body paralysis on the Fujian oysters and then conducting shell opening, the food safety risk of manual oyster opening and meat taking is reduced, the Fujian oyster shell opening and meat taking efficiency is improved, manual operation is reduced, and the oyster opening rate of a biological shell opening method can reach 90% or above. The oyster meat processed by the shell opening solution is higher in yield and free of salt ion residues, various indexes of aquatic product processing are met, and oyster juice prepared from the oyster meat is better in quality, flavor and preservative capacity.

The invention discloses a novel squid quality degree grading judgment method based on physical and chemical indexes of freshness, which comprises the following steps: selecting different squids as samples, respectively carrying out volatile basic nitrogen content detection and total texture analysis on the squids, measuring the freshness and the physical and chemical indexes of the squids, carrying out Pearson correlation on the two, and determining the quality degree of the squids. Through principal component analysis and combination of TVB-N content on a freshness limit value of an animal aquatic product, texture physicochemical indexes having the greatest influence on squid quality grading are found. According to the method, the quality of the squids can be quickly judged by performing texture analysis on the squids, combining with the limit value of the content of volatile basic nitrogen in animal aquatic products in national standard and measuring the elasticity index of the sample, so that quick quality grading judgment can be performed on the squids on the basis, and scientific guidance is provided for further quick quality identification of marine foods.

The application belongs to the technical field of drain valves, and discloses a time-delay valve core, a time-delay drain valve applying the same and a sanitary ware, wherein the time-delay valve core comprises: a body provided with a water inlet area, a water control flow channel and a water passing area, the water control flow channel being communicated between the water inlet area and the water passing area; a first adjusting member rotatably installed on the body, the water control flow channel being configured to change the water discharge flow to the water passing area with the rotation of the first adjusting member; and according to the water discharge requirement of a product, the water discharge flow of the water control flow channel is adjusted by using the first adjusting member, so that the adjustment of multiple water efficiency is realized, and the time-delay valve core is suitable for different water products. The whole structure is simple, the adjustment is convenient, and the applicability is wide.

The invention discloses an aquatic product cold chain transportation monitoring system which is characterized in that the system comprises a hardware layer and a software layer, the hardware layer comprises a sensing control module, a structure bearing module and a communication interaction module, and the software layer comprises a data management module, an intelligent calculation module and a business application module; the sensing control module comprises an environment sensing sub-module and an equipment control sub-module, the structure bearing module comprises a compartment main body sub-module and a cargo protection sub-module, and the communication interaction module comprises an edge calculation sub-module and a vehicle-mounted interaction sub-module. According to the application, a real-time monitoring-dynamic prediction-intelligent regulation and control microbial inhibition system is constructed, a high-precision sensor is used for collecting environmental data in real time, and an LSTM-Attention model is combined for accurately pre-judging the growth trend of microorganisms, so that the effects of early warning before the colony count reaches a dangerous threshold value and automatically coordinating equipment to start targeted bacteriostatic measures are achieved, and the safety of the system is improved. And the loss rate of aquatic products caused by microbial pollution is reduced.

The invention provides a calcium salt improver which comprises the following components in parts by mass: 15-25 parts of calcium chloride, 40-50 parts of trehalose, 30-40 parts of sodium bicarbonate and 3-6 parts of glycine. The invention further provides a method for improving the quality of the aquatic products by the bubbling pickling process in cooperation with the calcium salt, the calcium salt modifier and ice water are added into the pickling container, air is compressed for bubbling, so that the calcium salt modifier is fully dispersed in the ice water, and pickling liquid is obtained; placing the aquatic products in the pickling liquid, bubbling and pickling the aquatic products by compressed air, and cleaning the aquatic products after the pickling is finished, so as to obtain the pickled aquatic products. According to the invention, a bubbling pickling process is utilized to cooperate with the calcium salt modifier, so that the friction force on the raw materials is smaller, the problem that calcium salt is easy to precipitate can be solved, and the phenomenon of uneven local accumulation is avoided. The method is improved from physical and chemical levels, the original taste of the aquatic products is kept, the texture of the aquatic products is improved, and the overall quality and the fresh-keeping effect of the products are improved.