1147 results about "Fish scale" patented technology

A fishing lure made of soft flexible material. The various shapes of the lure resemble fish, bait, squid, lizards, crayfish, jig trailers, swimbaits, reapers, jerk baits, and other shapes. The tail portion of the fish shaped lure normally has a paddle type tail, which when pulled through the water moves horizontally from side to side, imitating the swimming action of fish. These fish lures are often called swimbaits or paddle tails. The lure has a piece of reflective foil, larger than the size of glitter common to prior art, placed on the surface of the lure or within the lure. The reflective strip normally has a holographic design pattern, such as fish scales or other patterns.

The invention discloses a nitrogen-doped fluorescent carbon quantum dot and a preparation method and application thereof, and belongs to the technical field of material science. Fish wastes (such as fish scales, bones and skins) are cleaned, then hydrothermal reaction is directly performed to obtain nitrogen-doped fluorescent carbon quantum dot aqueous dispersion, and finally filtration, dialysis and freeze-drying are performed to obtain nitrogen-doped fluorescent carbon quantum dot solid. The size of the nitrogen-doped fluorescent carbon quantum dot prepared by using the preparation method disclosed by the invention is smaller than or equal to 10nm, the nitrogen content is smaller than or equal to 20 percent, the surface of the quantum dot has nitrogen-containing and oxygen-containing functional groups, and the quantum efficiency is 17-30 percent. The nitrogen-doped fluorescent carbon quantum dot and the preparation method and application thereof have the advantages that the preparation method is environmental-friendly, the operation is simple, the requirements on equipment are low, the preparation method is suitable for large-scale production, and the prepared nitrogen-doped fluorescent carbon quantum dot has excellent fluorescent performance and can be widely applied to fields such as photoelectric materials, biological imaging and fluorescent probes.

The invention discloses a fish scale collagen process technology that is made up from the process of twice acid process, alkali neutralized, boiling, enzymolysis, exchanging absorbing, concentrating, filtering, drying and spraying. The invention also supplies the invention to easily produce fish scale collagen produce technology. The invention has low molecular weight, stability, and low content or ash content.

The invention discloses a method for preparing collagen peptide from fish scales, which is characterized by comprising the following steps of: 1, taking the fish scales and immersing hydrochloric acid to remove calcium; washing to be neutral, drying and crushing; 2, adding the calcium-removed, dried and crushed fish scales obtained by the step 1 into an enzyme reactor; adding water and mixed protease to extract the collagen peptide; after the extraction, carrying out enzyme deactivation and centrifuging to obtain an enzymolysis solution, wherein the mixed protease is a mixture of neutral protease, papain and flavored protease; and 3, carrying out film concentration on the enzymolysis solution obtained by the step 2; and freezing and drying a concentrated solution to obtain fish scale collagen peptide powder. According to the fish scale collagen peptide obtained by the invention, the neutral protease, the papain and the flavored protease are used for extracting the fish scale collagen peptide by an enzymic method at one step, so that not only can the enzymolysis time (9 hours)be reduced, but also the extracting rate (72.72%) of the collagen peptide is improved, and solves the special flavor problem of bitter taste of the collagen peptide and the like.

The invention provides a conditioning and making method and a high-efficiency even drying method for a small trash fish marine product, belonging to the technical fields of food conditioning and aquatic product processing. The main process of the invention comprises the following steps of: removing three parts (fish scale, fish head and viscera) of a fresh or iced and fresh small trash fish marine product, washing the small trash fish marine product with clear water, slicing the small trash fish marine product into fish chips with the length of 6-10cm, deodorizing preprocessed fish meat for 4hours with compound rinsing fluid, then carrying out ultrasonic assisted vacuum impregnation conditioning (pickling and seasoning), secondary rinsing, draining, medium-short wave infrared drying pre-dehydrating, pulse spraying negative pressure microwave drying, packaging and sterilizing, thus the small trash fish dried fish prepared food product is obtained. The small trash fish marine product disclosed by the invention has good colour, fragrance and taste, beautiful appearance, low moisture content and complete nutrition, is a high-protein and low-fat food, is beneficial to reducing cholesterol and preventing cardiovascular and cerebrovascular diseases after being eaten for a long time, can be used for adjuvant therapy on leukaemia, stomach cancer and the like and is a high-quality leisure food for both the old and the young.

The invention discloses a method for remedying heavy metal polluted mining soil, which includes: using fish-scale pits to prepare the land; separately stacking the soil of different stratums in excavation; separating the surface soil and the undersoil; allowing unpolluted soil to stand by; filling the finished tree pits with the surface soil obtained in excavating the tree pits; well mixing the tree pit filling with the unpolluted soil excavated on the spot or borrowed soil, and filling the mixture into the tree pits; and finally filling with the undersoil or borrowed soil. On the basis of the prior art, ingredients of the filling are changed, so that planted plants are easy to survive and can successfully live through the transitional period, and the basis for remediation later is laid.

The invention provides a production method of fish scale collagen which comprises, selecting high grade fish scale as raw material for pre-processing, removing glutinous substance and other impurity on fish scale surface, drying, deliming, degreasing, high-pressure catalytic steaming, extracting liquid form low molecular protein peptide fish scale collagen.

The invention discloses a method for preparing an antioxidant active peptide by hydrolyzing fish scale collagen with co-immobilized double enzymes. The method comprises the following steps of: (1) co-immobilizing double enzymes by cross-linking method, (2) pre-treating fish scale, (3) hydrolyzing fish scale proteins with the co-immobilized double enzymes, (4) decolorizing and deodorizing, (5) separating fish scale polypeptides by ultrafiltration, (6) vacuum concentrating; and (7) freeze drying. The antioxidant active peptide product can be used as a natural antioxidant in antioxidation and preservation of foods and has no toxic or side effect and high safety. The method has high enzymolysis efficiency, the enzymes can be used repeatedly, and the enzymatic hydrolysates are purified easily.The method provides a new approach to effective utilization of fresh water fish waste, and the product can be used in pharmaceuticals, foods and cosmetics.

The invention discloses a process for preparing micro-molecular fish scale collagen peptides and belongs to the technical field of biological extraction. The process comprises the following steps of: 1, pretreating fish scales, and removing impurities and fat on the surfaces of fish scales; 2, extracting fish scale collagen peptides by using a high-temperature sulfuric acid extraction method, wherein the extraction yield is over 95 percent; 3, purifying the extracting solution by adopting the process technology combining centrifugal separation and membrane separation to obtain macro-molecularfish scale collagen peptides of which the purity is over 90 percent; 4, hydrolyzing the macro-molecular fish scale collagen peptides by using protease, and performing enzymic inactivation to obtain the solution of micro-molecular fish scale collagen peptides of which the purity is more than 90 percent and the relative molecular weight is less than 1.5kD; and 5, spray-drying and quickly drying thesolution of collagen peptides to obtain the finished product of micro-molecular fish scale collagen peptides. The micro-molecular fish scale collagen peptides prepared by the process have the advantages of low cost, high yield, high purity and low molecular weight; moreover, in the process, the fish scales discarded in fish processing are fully utilized, and the wastes are changed into the valuables.

A data receiving and storage device designed to record and display any and all relevant data that might be useful to an angler. A portable platform containing a fish scale, fish measuring apparatus, and a display with a user interface allows an angler to record data on each fish that is caught, including GPS position where the fish was caught and what time of day. The device is capable of storing data for numerous fish and culling fish so that the angler knows to remove smaller fish when the device has determined that the most recently caught fish is larger than one stored in the boat's fish locker.

The invention relates to a high-yield cultivation method of big black charcoal waxberries. The method comprises the following steps of (1) land selection and garden building, wherein a garden is built on a flat mountain land with the elevation lower than 500 meters, soil texture heavy and weather humid, and terrace lands or horizontal belts or fish-scale pits are built on the flat mountain land for plantation; (2) hole digging and planting; (3) soil splitting and fertilizing, wherein fertilizing and topdressing of strawberry trees can be carried out at the periods of saplings, big trees during the fruiting period and grown trees, and fertilizers are scattered on the overall garden and then are burned in soil in autumn and winter; (4) pruning, wherein the principles of the spurning of the strawberry trees are that ventilation and light transmitting are achieved, straight branches are eliminated and oblique branches are reserved, and fruits are born in a three-dimensional mode; (5) flower and fruit amount adjusting, wherein in the blooming period of the on year, flower thinning and fruit thinning agents like the number 6 thinning agents are sprayed; (6) pest control. The big black charcoal waxberries can be planted in large areas, the strawberry trees have strong moisture resistance, drought resistance, bare resistance and disease and pest resistance, and are high in fruit setting rate and high in yield, and the purpose of stable yield every year is achieved.

The invention relates to a method for preparing fish scale collagen. The method comprises the following steps: fresh fish scales are taken as a material, undergo cleaning, drying and crushing, are soaked in NaOH solution for degreasing, and soaked in hydrochloric acid solution for deashing; the fresh fish scale is added with water of which the weight is 5 to 10 times of that of the fish scales, the pH value is adjusted to between 2 and 4 by acid solution, pepsin of which the weight accounting for the weight of the mixing solution is between 1 and 5 percent is added, the mixing solution undergoes enzymolysis at a low temperature for 4 to 10 hours, and enzyme is killed; enzymatic liquid is filtered twice to obtain extracting solutions, the extracting solutions are mixed, the mixing solution is decolored, sodium chloride of which the weight accounting for the weight of the mixing solution is between 5 and 15 percent is added into the mixing solution for overnight salting out, deposit is separated and collected, and acetic acid of which the weight accounting for the weight of the mixing solution is between 5 and 20 percent is added into the deposit for dissolution to obtain protein solution; the protein solution is dialyzed and desalted to obtain purified collagen liquid; and the collagen liquid is subjected to freeze-drying or spray-drying and micro-crushing to obtain solid particle. The method has the advantages of reasonable process, simple operation, safety, low cost, little loss of nutrient matters of the product, low ash content and high yield and purity of the collagen.

The invention belongs to the technical field of feeds and particularly relates to a feed for crabs. The feed for crabs is characterized by comprising the following materials in parts by weight: 30-60 parts of pork skin, 20-50 parts of fat pork, 5-15 parts of lean pork, 6-9 parts of corn meal, 3-5 parts of soybean meal, 1-5 parts of edible oil, 0.1-1 part of garlic cloves, 1-2 parts of fish scale powder and 0.5-1.5 parts of rape seed cakes. The main problems that since the feed for crabs is difficult to absorb, the crabs grow slowly and the water quality is contaminated in the prior art are solved; the feed disclosed by the invention has the beneficial effects of being rich in nutrition and aromatic in smell, containing antiviral components, and enabling the crabs to grow fast after the feed is eaten; the feed is simple to prepare and all the materials of the feed are rich in supply.

The invention relates to the technical field of foods, in particular to a method for processing the frozen minced fillets of java tilapia. The method comprises the following steps: the fish head, the fish scales and the viscera of java tilapia are removed by preprocessing, the java tilapia is washed cleanly and made into minced fish, then the minced fish is dewatered and finely filtered after ice water with the weight of 2-3 times of the weight of the minced fish and 0.15-0.2% of NaCl solution are sequentially used for rinsing the minced fish fully, a compound antifreeze with the weight of 7-9% of the weight of the minced fish is added, and minced fillets are obtained by fully mixing evenly, subpackaged at the temperature of -40 DEG C to -80 DEG C for quick freezing and put for freezing preservation at -18 DEG C; the moisture content of the minced fillets is smaller than 79%, and the gel strength and the folding resistance degree are used as indexes for judging the quality of the minced fillets. In the frozen minced fillets made and obtained according to the method, the gel strength of the minced fillets before freezing storage exceeds 800 (g.cm) by the detection of the gel strength and the folding resistance degree, the gel strength of the minced fillets after the freezing storage for 2 months still reaches more than 600 (g.cm), and the folding resistance degree reaches an AA level. The quality of the frozen minced fillets is equivalent to that of the SA level minced fillets of marine products, such as nemipterus virgatus, red sea bream and the like.

The invention discloses a lake mandarin fish scale culturing method, comprising feeding efficiency, defecation rate, excretion rate, standard metabolism, SDA, activity metabolism and fish physical ability value and growth sub-model. The growing conditions and the bait consumption rate of the piscivorous fish after stocking can be predicted by the model; water body is taken as the research site, the time and space distribution characteristics, the biomass, the structure of the main population, the population growth trends of the growth period, the bait base and tropic niche width and competition overlapping of the advantageous small-sized fish in the shallow water reeds lakes are systematically researched, thus establishing the quantitatively acquiring method of the small-sized fish in theshallow water reeds lakes, completing the productivity analysis and measurement of the advantageous population of the small-sized fish in the shallow water reeds lakes, and estimating the sustainableproduction capacity of the lake bait fish.

The invention provides a method for defatting and deashing fish scales for preparing collagen or gelatin or collagen protein. The technical key points are as follows: the pollution-free high-quality fish scales are taken as raw materials, hot water of 40-50 DEG C is used for cleaning, the surface viscous substances and other impurities of the fish scales are removed; then 5-6 times of the weight of the fish scales of 1 percent-3 percent of NaOH hot alkaline solution (or 2 percent-5 percent of sodium carbonate hot alkaline solution) is used for stirring and soaking for 2-3 hours at 40 DEG C-50 DEG C, the filtration is carried out, the hot water of 40 DEG C-50 DEG C is further used for flushing, lipid substances are removed, the drying is carried out till the water content is less than 15 percent for storage and standby; after that, 5-6 times of the weight of the fish scales of water is added in a reaction kettle, 1 percent-2 percent of the weight of the fish scales of concentrated hydrochloric acid is added, the heating and cooking are carried out for 5-10 hours under the pressure of 0.1MPa-0.14MPa till the fish scales are softened to be transparent, and the filtration and the water flushing are finally carried out; the method has the advantages that the method can reduce the using amount of acid and alkali, shorten the production cycle, reduce the emission of wastes to the environment and improve the utilization rate of the fish scales. The method is an environment-friendly and resource-saving production technology.

The invention belongs to the agricultural natural product extraction field, in particular relating to a method for extracting unmodified collagen from freshwater fish scale. The method comprises the following steps that: (1) cleaned scale is added in distilled water and is stirred intermittently by a motor stirrer for 3 to 5 minutes till the surface of the scale has no attachment of pigment and fat, etc.; the scale is crushed to 40 to 50 meshes after natural air drying and low-temperature drying; (2) the materials of the step (1) are added into 8 to 10 percent of citric acid and malic acid solution according to a ratio of between 1 to 10 and 1 to 20 so as to carry out ice-water bath microwave treatment for 2 minutes and decalcification at a temperature of between 10 and 20 DEG C for 8 to 24 hours; then, the solution is filtered and the filtrate undergoes standing at a temperature lower than 10 DEG C for 5 to 10 hours so as to obtain calcium citrate precipitate; (3) according to a ratio of between 1 to 5 and 1 to 20, 1 percent malic acid or citric acid solution (containing protease) is added into the de-calcification scale obtained after the treatment of step (2), and is stirred and extracted 2 to 4 times at a temperature of between 0 and 20 DEG C with each time lasting 12 to 48 hours; then, centrifugation is carried out, and supernatant is taken out; NaCl is added till final concentration reach 0.7 to 0.90 mol / L, and then salting out is carried out over night; centrifugation and deposition are carried out, and the obtained substance is dissolved in 0.50mol / L acetic acid; then, salting out and dissolving operations are repeated one more time, and the precipitate undergoes dialysis so as to obtain the product of the invention through freeze drying.

The invention provides a collagen and a collagen polypeptide, wherein, the weight percentage of hydroxylysine is more than 1.3 percent. The invention also provides the preparation technology and the application of the collagen and the collagen polypeptide. The invention can make full use of inexpensive raw materials including the fish skin and fish scale of tilapias to produce products with high added value. The collagen polypeptide is used for treating arthritis with a definite drug effect, and the clinical dose is considerably less than other collagen polypeptides. The collagen polypeptide can solve the pollution problem of fish skin wastes, and at the same time avoid the risk of infectious diseases which can be caused by the collagen of land animals. The collagen and the collagen polypeptide have the advantages of considerable economic benefits, energy conservation and environmental protection, simple process equipment, low cost and easy industrialization.

The invention relates to a method for soil-column seedling culture and transplanting afforestation, wherein the transplanting afforestation method comprises the following steps of preparing soil-column blocks, using the soil-column blocks to cultivate tree / shrub seedlings and transplanting soil-column-block seedlings on site. The method can avoid the damage of bare-rooted seedling transplantation to tree root systems, as well as the problem of root-system coiling problem caused by container seedling transplantation, can enable transplanted seedlings to form root-system forms similar to self-generated trees so as to improve the survival rate of the seedlings and the adaptability of the seedlings to new environments, can avoid the destruction of fish-scale pits and other traditional afforestation methods to ground surface, and can reduce soil wind erosion. The method can be used for general flat-land afforestation, as well as slope-land, sandy-land and wasteland afforestation, and has obvious social, economic and ecological benefits.

The invention discloses a fish scale curtain wall system. The fish scale curtain wall system consists of a plurality of curtain wall components which are obliquely overlaid on the outer wall of a building, wherein the curtain wall components comprise a frame and glass panels fixedly arranged in the frame; a window ventilator is arranged in the overlaid area of the curtain wall components and upper-layer adjacent curtain wall components; an air inlet passage is arranged at the connection position of the curtain wall components and a lower-layer floor plate; and further, a ventilating shutter is arranged between the upper and lower adjacent curtain wall components. As the fish scale curtain wall system disclosed by the invention is adopted, the effective utilization of natural resources is realized; the effects of natural ventilation and evaporation can be increased independent of a manual method; the fish scale curtain wall system replaces a conventional refrigerating air conditioning system, so as to greatly decrease the energy consumption of the whole building and save energy resources; and the fish scale curtain wall system is economical and practical, further, is green and environment-friendly, and is also convenient to mount.

The invention relates to a method for producing collagen polypeptide, natural pigment and fish oil by using fish skin and fish scale. So far, a method for integrally producing the four products by taking the fish skin and the fish scale as raw materials is not provided yet. The method disclosed by the invention is characterized by comprising the following steps of: deoiling the fish skin and the fish scale at low temperature; performing composite enzyme hydrolysis; adsorbing malodorous smell by adding porcellanite and active carbon; filter-pressing; clarifying; adsorbing natural pigment by using macro-porous resin; flowing out collagen polypeptide; eluting red pigment by using acid ethanol; eluting yellow pigment by using alkaline ethanol; respectively condensing, spraying and drying the solution containing collagen polypeptide and two pigments to obtain collagen polypeptide and red pigment and yellow pigment powder; and extracting crude oil by using supercritical carbon dioxide so asto obtain edible fish oil. The method disclosed by the invention has the benefits that: the collagen polypeptide is white and inodorous and has high yield; the natural red pigment and the yellow pigment have bright colour and are steady to light, heat, acid and alkali; the fish oil is edible oil; and the four products have very important significance to human bodies and can be used as nutritious foods, health care products, foods, beverages, food additives and cosmetics.

The invention discloses a method for producing a non-fishy smell collagen membrane by fish processing leftovers, such as fishbone, fish skin, fish scale, fish muscle and the like. The technical process comprises the following steps: removing non collagen, degreasing, removing fishy odor and deashing, stirring and the like to the fish processing leftovers, such as the fishbone, the fishskin, the fish scale, the fish muscle and the like; adding plasticizer in the collagen acquired by hot water extraction and centrifugal separation, stirring, defoaming, drying and the like to prepare the collagen membrane. The invention utilizes fish processing leftovers as main raw materials, and develops a new way for the comprehensive utilization and the product development of the fish processing leftovers; the prepared collagen membrane has good mechanical strength and transparency and no fishy odor, can replace parts of plastic packaging films, can be eaten together with the packaged food, and has good effects on reducing the waste emission of aquatic product processing enterprises, reducing the use of the plastic packaging film in food, and protecting the environment.

The invention discloses a method for preparing micromolecular collagen peptide from fish scales by utilizing complex enzyme. The method comprises the steps of deashing and degreasing fish scales used as raw materials; adding complex enzyme mixed by pepsin, papain and trypsin for hydrolyzing, inactivating the enzyme, carrying out coarse filtering, film filtering, vacuum concentrating and freeze drying to obtain the micromolecular collagen peptide. The collagen peptide has the average molecular weight of 500-1,000Da, can be absorbed and utilized by human bodies easily, can be applied to cosmetic, healthcare products, foods, beverages and other industries, and has remarkable economic effect and social effect.

The invention relates to a blade-free automatic copying fish scale scraper; the blade-free automatic copying fish scale scraper comprises a frame and is characterized by further comprising a scaling device, a swinging mechanism and a power transmission mechanism, wherein the equipment has the advantages of high automation degree and short machining time and can effectively adapt to variations of fish types, sizes and surface curves; distances between scaling rollers can be automatically adjusted according to the size of a fish body during scaling; a scaling tool contains no blade, so that no damage can be caused to fish flashes during scaling; and tender and delicious fish flashes can be preferably protected.

The invention discloses a steel rail scale damage detection method based on deep learning. The method comprises the following steps: firstly, dividing a data set formed by all images into a training set, a test set and a verification set according to a set proportion; setting a network structure and performing forward propagation, and performing deep learning training by using a residual neural network, the residual neural network comprising a convolutional layer, a pooling layer and a full connection layer; after a calculation result of forward propagation is output, calling a reverse propagation algorithm; and finally, reserving a model trained by the final residual neural network, and drawing a change curve of each parameter in the whole training process for reference. According to themethod, a convolutional neural network technology in machine vision and deep learning is combined, features of a steel rail scale damage sample are extracted and learned and classified, and a model output by the neural network is used for judgment in the actual industry; compared with a method for judging the fish scale damage on the surface of the steel rail by using a manual method in the industrial field, the method has very high detection efficiency and accuracy.

The invention discloses a method for extracting fish scale collagen peptide. Fish scales are taken as a raw material, and the method comprises the following steps of: cleaning the fish scales, blending with water, and heating for sterilization; performing degreasing and enzymolysis by using biological enzyme; further performing enzymolysis by utilizing exo-protease, deactivating enzyme, filtering, decoloring, performing film separation, and drying the obtained filtrate to obtain the fish scale collagen peptide. The method has the advantages of short production period, low cost, and no toxic or harmful substance; and the obtained product has high safety and can be widely used in the fields such as cosmetics, foods, medicaments, health care products, biological synthesis and the like.

A method of preparing a biomaterial comprises steps of acellularizing the fish scale, decalcifying the fish scale, and cleaning the fish scale and then extruding the fish scales.

The invention discloses a method for preparing fishskin fish-scale collagen protein. The method includes the steps of processing fishskin, processing fish scale, preparing collagen protein and the like. The fish scale processing includes the steps of preprocessing, decalcifying, neutralizing and removing immunities, washing, injecting sol, solid and liquid separation, filtering and obtaining a water-soluble collagen solution generated after fish scale is removed. The collagen protein preparing includes the steps of hydrolysis, enzymolysis, collagen protein filtering and separation, enzyme deactivation, decolorization, fishy smell elimination, drying and the like. The ash content in obtained collagen peptide is obviously lower than that of other enzymolysis methods, and no fishy smell exists. According to the method, hydrolysis is conducted on collagen through compound protease and bromelain, the yield of micromolecule collagen peptide is high, and the enzymic preparation is low in cost and free of bitter taste. By means of the method, the production cost of the collagen peptide can be lowered remarkably, the obtained collagen peptide is white and tasteless powder, the ash content is smaller than 0.5%, and peptide fragment with the molecular weight smaller than 3000 Da accounts for over 96% of total nitrogen.

The invention relates to a method for extracting collagen polypeptide and hydroxyapatite in fish scales by cooking hot extrusion, which comprises the following steps: (a) pulverizing clean fish scales by a pulverizer; (b) putting the pulverized fish scales and water into a feed inlet of a double-screw cooking heat extruder for hot extrusion for 0.5-1h under the action of steam pressure to obtain thick slurry, wherein the content of the fish scales is 90%-95%; (c) after the treatment of the step b, adding water of which the weight is 8-10 times of the weight of the thick slurry, extracting collagen by water immersion, and filtering residues; (d) adding enzymes of which the weight is 1%-3% of the weight of the fish scales into the water solution of the collagen extracted in the step c for enzymolysis for 2-3h at 45-60 DEG C, heating to 90 DEG C after enzymolysis, keeping for 10min, and then inactivating the enzymes; (e) decoloring the enzymolysis solution obtained in the step d, removing impurities with an ultrafiltration membrane, concentrating the solution with a nanofiltration membrane, and freeze-drying the solution to obtain the collagen polypeptide of the fish scales; and (f) drying and pulverizing the residues obtained in the step c, and then, putting the residues in a muffle furnace for calcining for 1-2h at 700-1000 DEG C to obtain nano-hydroxyapatite. The invention does not need acid-base pretreatment, has good separation and purification effects and can not influence the activity of the collagen polypeptide and the hydroxyapatite in the fish scales.

The invention discloses a method for producing leisure crisp particles by compounding minced freshwater fish and fruit and vegetable juice, which belongs to the technical field of processing of aquatic products. The method comprises the following steps of: cleaning silver carps serving as a raw material, removing heads, internal organs and fish scales, cleaning, removing fish skin and fishbone, taking fish flesh, removing fishy odor, chopping and spreading salt; cleaning fruits and vegetables serving as raw materials respectively, peeling, removing kernels, slicing, pre-boiling, pulping, filtering and concentrating; and chopping and mixing according to proportion and performing vacuum microwave puffing so as to produce leisure crisp particles. The leisure crisp particles produced by the method have good color, fragrance and taste, high crispness and low water content, avoid the trouble of fishbone, overcome the defects of high salt content of the conventional dried fish and high oil content of fried fish, have overall nutrition, have the characteristics of high protein, low fat and rich vitamins and minerals of fish flesh and the advantages of rich vitamins and minerals such as calcium, phosphorus, potassium, magnesium and the like of the fruit and vegetable juice, can coordinate function of a human body, enhance cell viability and enterogastric peristalsis, promotes the secretion of digestive juice, remove fatigue and belong to a high-nutrition leisure food which is good for both children and adults.