12 results about "Euphausia" patented technology

The present application relates to the technical field of Antarctic krill oil extraction, and discloses an antioxidant Antarctic krill oil extraction device and method, which comprises an extraction box, an ultrasonic generator is fixedly installed on the bottom wall of the extraction box, a door-shaped frame is fixedly installed at the top end of the extraction box, a crushing cylinder is fixedly installed through the top end of the door-shaped frame, a support frame is fixedly installed at the top end of the door-shaped frame, a feeding hopper is fixedly installed through the top end of the support frame, through holes are formed through the top end and the bottom end of the crushing cylinder, and support plates are fixedly installed on the inner walls of the opposite sides of the extraction box. When the material box moves back and forth, the stirring rod installed at the bottom of the material box is synchronously moved, the transmission gear installed at the bottom end of the stirring rod rolls on the rack, so that the transmission gear can drive the stirring rod to rotate, the stirring rod can scatter the Antarctic krill crushed powder in the material box, the Antarctic krill crushed powder is prevented from being bonded together, and the extraction effect of the Antarctic krill oil is further improved.

The application discloses a continuous Euphausia superba fishing pump for ships and belongs to the technical field of fishery. The pump body is connected with an inlet pipe at the inlet end and an outlet pipe at the outlet end. An inlet box is arranged between the inlet pipe and the pump body. The inlet box is provided with a pressure relief pipe. The connecting end of the pressure relief pipe and the inlet box is provided with a movable piece. The movable piece moves back and forth to control the connection between the pressure relief pipe and the inside of the inlet box. The application has the advantages of simple structure, easy operation, automatic adjustment of the suction force of the fish suction pump, prevention of blockage, reduction of damage to the catch and improvement of the efficiency of fishing operations.

This invention discloses a low-salt Antarctic krill surimi gel and its preparation method based on the synergistic construction of ultra-high pressure pretreatment and sodium brine gel post-filling, belonging to the field of aquatic food processing technology. The method first constructs a sodium brine gel using chickpea protein, pullulan, and salt, then prepares Antarctic krill surimi with a low total salt content. The low-salt surimi is pretreated under ultra-high pressure at 300-450 MPa, followed by the addition of sodium brine gel and low-temperature chopping. After pre-geling at 35-45 ℃ and heat-curing at 85-95 ℃, a composite surimi gel is obtained. This process allows ultra-high pressure to primarily act on the myofibril proteins of Antarctic krill, with the brine-loaded gel serving as the subsequent network filling phase and sodium brine gel. + The locally enriched phase is dispersed in the continuous gel network, which simultaneously improves gel strength, water retention, texture and saltiness perception without increasing the total sodium content. It is suitable for low-salt shrimp paste, shrimp sausage and ready-to-eat shrimp paste products.

This invention provides a method for preparing high-content krill phospholipids and removing organic arsenic using preparative high-performance liquid chromatography (HPLC). The method includes: S1, dissolving Antarctic krill oil; S2, separating Antarctic krill phospholipids and removing organic arsenic using preparative HPLC; and S3, concentrating the eluent to remove the solvent, obtaining Antarctic krill phospholipids with a total phospholipid content ≥60% and a total arsenic content <1 mg / kg. The chromatographic separation materials used in this invention are pure, and the solvents used are food-grade ethanol, n-hexane, etc., meeting food safety requirements. The process can be implemented using a fully automated preparative chromatography system, exhibiting good reproducibility. This method can obtain high-safety Antarctic krill phospholipid products with a total arsenic content of less than 1 mg / kg and a total phospholipid content ≥60%, ensuring that the total arsenic content of the product meets the safety limits for health food raw materials. This satisfies the needs of high-end application scenarios such as infant and pregnant women's nutritional products and is beneficial for developing functional Antarctic krill phospholipid products.

The application relates to an acoustic image lightweight Euphausia superba detection method based on an improved YOLOv8n, which comprises the following steps: acquiring an acoustic image of Euphausia superba; constructing a target recognition model based on the improved YOLOv8n and training the model; the improved YOLOv8n comprises the following steps: step-by-step feature extraction of an input image by using a RepGhost module, wherein multi-scale features are output after each level of features is enhanced by a C2f-Trans module and a CoECA module; feature fusion by using a BiFPN module, wherein a target detection result is output by a detection head with different detection fields according to the fused features; and inputting the acoustic image into the trained target recognition model to obtain an Euphausia superba group detection result. The application can greatly improve the detection speed, and significantly improve the detection precision and recall rate of underwater weak targets such as Euphausia superba.

This invention relates to the field of krill fishing equipment technology, and discloses a multi-bucket type fishing net lifting and adjusting mechanism for Antarctic krill fishing. The mechanism includes a hull, a cable winch fixedly connected to the top of the hull, a cable sleeved on the outer wall of the cable winch, and a trawl winch fixedly connected to the top of the hull. Addressing the problem of slow krill net lifting and lowering speed, a floating component is installed inside the equipment. When it is necessary to lift the krill net upwards, the power to the waterproof hydraulic pump is turned on, causing the pump to rotate forward and forcing the seawater accumulated inside the metal float to be discharged. Simultaneously, the exhaust pipe on the side wall of the metal float introduces high-pressure gas into the float, making the gas level inside the float greater than the seawater level. When there is sufficient air inside the metal float, it generates buoyancy, lifting the end of the krill net upwards. The application of this component effectively accelerates the rate of krill net depth adjustment.

This invention provides an Antarctic krill-derived zinc chelating peptide, its preparation method, and its applications, belonging to the field of marine bioactive peptide technology. This invention utilizes defatted Antarctic krill powder to prepare high-affinity zinc chelating peptides, and the obtained peptides exhibit excellent zinc chelating capabilities. Mass spectrometry identification identified four peptides, all of which possess excellent zinc chelating abilities. The Antarctic krill-derived zinc chelating peptide prepared by this invention significantly enhances the zinc chelating ability compared to currently confirmed Antarctic krill peptides, and can be used as a carrier for fourth-generation zinc supplements in the prevention and treatment of zinc deficiency in common foods, health foods, and pharmaceuticals. This invention achieves high-value and precise utilization of defatted Antarctic krill powder, a processing byproduct, effectively improving resource utilization and industrial value, while also providing a new feasible approach for the development of safe and efficient zinc supplements.

The present application relates to a kind of astaxanthin binding protein derived from Antarctic krill and its application, belong to the field of biotechnology, the astaxanthin binding protein amino acid sequence as shown in SEQ ID NO.1, the present application also provides the application of the astaxanthin binding protein in stabilizing astaxanthin, astaxanthin binding protein is added in astaxanthin solution, astaxanthin binding protein can be combined with astaxanthin and form stable complex, can accurately protect the unsaturated structure of astaxanthin, significantly improve its stability to light, heat and other environmental factors, help to improve its bioavailability in functional food or pharmaceutical field.

The application discloses a source of antifreeze peptide of euphausia superba for quality keeping of squid and a preparation and screening method thereof, and is prepared from the euphausia superba as raw material, and different proteases are used for enzymolysis under certain material-liquid ratio conditions, and the enzymolysis liquid with the optimal antifreezing effect is screened through a freeze-thaw cycle food model. The euphausia superba enzymolysis liquid obtained through neutral protease enzymolysis can significantly improve the water holding capacity of food, and reduce thawing loss rate and cooking loss rate. After the euphausia superba enzymolysis liquid is prepared under the optimal hydrolysis condition, the molecular weight distribution is determined, then the enzymolysis product is separated and purified through ultrafiltration and dextran gel chromatography, the active component is identified through liquid chromatography-tandem mass spectrometry, finally, the potential active peptide is screened and mechanism analysis is carried out, and the antifreeze peptide is successfully identified. The prepared antifreeze peptide is natural, safe and effective in source, is suitable for quality keeping of frozen aquatic products and other frozen foods, and has a good application prospect.

This invention discloses a cold-induced gelled nutrient protein jelly made from Antarctic krill and its preparation method, belonging to the field of nutritional food processing technology. The method includes: preparing a high internal phase emulsion containing Antarctic krill oil; obtaining Antarctic krill protein from cooked Antarctic krill meat through alkali extraction and centrifugation; mixing the high internal phase emulsion and Antarctic krill protein at a mass ratio of 20:80 to 30:70, adding 0.2 to 0.4 wt% κ-carrageenan, adjusting the pH to 7 to 8, and cold-inducing gel formation at 0 to 10°C; then subjecting the mixture to ultra-high pressure treatment at 300 to 500 MPa for 10 to 30 minutes to obtain the nutrient protein jelly. The resulting product possesses the nutritional composition of Antarctic krill protein, whey protein, and Antarctic krill oil, with adjustable texture, and is suitable for the preparation of nutritional gel foods.

The application relates to a flexible switchable Euphausia superba intelligent sorting method and device, and belongs to the technical field of aquatic product processing and automatic equipment. The application not only realizes high-precision instance segmentation and flexible reference calculation of Euphausia superba through improvement of a deep learning network and a self-adaptive statistical decision model, but also creatively seamlessly converts a dynamic grading signal generated by front-end vision into a physical driving instruction of a servo motor, so that the rear-end spacing of a longitudinal involute sorting pipe is opened and closed in real time and automatically. The application establishes an intelligent linkage closed loop of "visual perception-dynamic decision-physical execution", can automatically and flexibly adjust a physical sorting channel according to real statistical characteristics of batches of materials, and realizes real flexible nondestructive intelligent grading.