125 results about "Fish protein powder" patented technology

The invention provides a fish protein powder which is water soluble with the color between light-yellow and pale-brown meal, wherein, the dry basis protein content of the fish protein powder is more than 80%; and a preparation method is provided for the fish protein powder. The method comprises the following steps: (1) preparing mincedfish seriflux; (2) preparing enzymatic hydrolyzate by the mincedfish seriflux; (3) preparing the fish protein powder by the enzymatic hydrolyzate. The fish protein powder prepared in the invention has the advantages of health, easy digestion, easy absorption, and the like; and can be widely used on protein-enhanced foods; the production process is simple, the production efficiency is high, and the raw materials have wide sources and can be obtained easily, thereby helping save cost.

The invention relates to a preparation method of deodorized fish protein powder. A technical process of the method comprises the following steps of: crushing low-value trash fishes; deodorizing; adding water for homogenating; performing enzymolysis on a mixed liquor by adopting a protein enzymolysis technology; blanching to obtain enzymolysis protein liquid; concentrating the enzymolysis liquid and performing spray drying; and packaging in vacuum to obtain a finished product. The protein powder is produced from low-value trash fishes and has a wide source, and a new way for high-value utilization of fresh water fishes is provided; the problem of the influence of odor substances in a hydrolysate on the utilization of the fish protein powder is solved; a biological enzymolysis technology isutilized, so that the efficiency is high and pollution is avoided; and the deodorized fish protein powder is safe and effective, is free from toxic and side effects, a rich in nutritional substances,can be developed as a food substrate, and has wide market prospect.

A preparation method of a fish protein powder without bitter and fishy smell comprises the following technical process: low-value fish and fish processing leftovers are crushed, added with water, hydrolysis is controlled with protease by a pH-state method, and then enzyme is inactivated to obtain an enzymolytic protein liquid. The enzymolytic protein liquid is fermented by lactobacillus; the fermentation liquor is then sterilized, filtered, dried in spraying way and packaged in vacuum. The protein powder of the invention is prepared by utilizing the fish processing leftovers which has wide sources, thus providing a new approach for high-value utilizing the wastes from the fish preprocessing leftovers, and solving the problem that the utilization of the fish preprocessing leftovers is affected due to bitter and fishy substances from enzyme hydrolysate; and the preparation method of the invention is a biological enzymolysis method, which reduces the formation of bitter peptides by monitoring the enzymolysis process. The fish protein powder has the advantages of safe, effective, non-toxic and no side effects, and the fish protein powder also has rich nutritive materials, and can be developed as a food base material, thus having wide market prospect.

The invention discloses a composite all-fish protein powder and a preparation method thereof and belongs to the field of aquatic product processing. The method comprises: mincing fish to make minced fillet, mixing different kinds of minced fillets and adding water into the mixture to make minced fillet pulp; performing enzyme hydrolysis and centrifugation, concentrating obtained supernate and performing the spray drying of the concentrate to obtain fish protein polypeptide powder; washing sediment, drying the sediment in hot air, crushing the sediment and sieving the crushed sediment by a 100-mesh sieve to obtain fish protein powder; and mixing the fish protein polypeptide powder and the fish protein powder to obtain the composite all-fish protein powder. The fish protein polypeptides in the composite all-fish protein powder can be absorbed and utilized by human bodies at a high rate; the composite all-fish protein powder has higher nutritive value and better mouthfeel than fish protein powder processed by using single freshwater fish; the composite all-fish protein powder is 100 percent fish protein powder obtained by hydrolysis of food grade-composite proteinase; the method of the invention is simple and low in cost; and the composite all-fish protein powder can be conveniently eaten as direct nutrition food or a food additive.

The invention discloses a processing method of nutritional rice flour, which comprises: in parts by weight, taking 60 to 100 parts of low-protein-low-phosphorous rice flour, 0.5 to 10 parts of whey protein, 0.5 to 10 parts of egg white peptide powder, 0.5 to 10 parts of fish protein powder, 1 to 20 parts of dietary fibers, 0.5 to 5 parts of fruit and vegetable powder, 0.5 to 3 parts of composite probiotic freeze-dried powder, 0.5 to 3 parts of prebiotics, 0.5 to 5 parts of edible and medicinal auxiliary material and 0.5 to 3 parts of powdered oil; uniformly mixing the materials; carrying out split charging; packaging to obtain a finished product of the nutritional rice flour. The rice flour is suitable for a patient suffering from the chronic kidney disease to eat, fine proteins of the egg white peptide powder and the fish protein powder are simultaneously added so as to supplement nutrition required by the patient suffering from the chronic kidney disease, and the prebiotics, the edible and medicinal auxiliary material for protecting the kidney, the fruit and vegetable powder and the dietary fibers are also added for regulating human body metabolism, thus being beneficial to health of the patient suffering from the kidney disease.

The invention provides adult fish feed of snake head mullets. The adult fish feed consists of the following components according to the weight parts of air-dried objects: 21-24 parts of fish meal, 3-4 parts of hydrolyzed fish protein powder, 7-9 parts of pork powder, 3-5 parts of spray-drying blood cell protein powder, 3-4 parts of shrimp meal, 4-5 parts of shrimp shell meal, 2-3 parts of euphausiid meal, 10-13 parts of fermented soybean meal, 3-5 parts of fermented cottonseed protein, 2-6 parts of peanut meal, 13-16 parts of flour, 7.5-10 parts of cassava starch, 1.5-2.5 parts of fish oil, 1-2 parts of soybean oil, 1-2 parts of soybean phospholipid oil, 1.5-2 parts of calcium dihydrogen phosphate, 1 part of a Chinese herbal medicine compound preparation and 2 parts of premixed material additives, wherein the Chinese herbal medicine compound preparation consists of the following materials according to the weight parts of the air-dried objects: 12 parts of honeysuckle flower, 10 parts of safflower, 8 parts of Indian buead, 6 parts of tuber onion seeds, 7 parts of thinleaf milkwort root-bark, 7 parts of Chinese dodder seeds and 50 parts of rice hull powder. The adult fish feed provided by the invention can be used for enhancing the immunity of the snake head mullets and preventing from infecting visceral sarcoidosis, also has a relatively good treatment effect on the snake head mullets suffering visceral sarcoidosis, and can be used for improving the survival rate of breeding of the snake head mullets.

A microgranular feed for the young Bothus plaice is prepared from Anabarilius powder, shrimp powder, mussel powder, hydrolytic squid protein powder, hydrolytic pacific cod powder, fish fat, lecithin, bataine hydrochloride, vitamins, minerals, starch, beta-carrotene, tryps ash, and sodium alginate. Its preparing process is also disclosed. Its advantage is high survival rate.

The invention discloses a method for producing fish protein and fish protein peptide and belongs to the technical field of biology. The method comprises the following steps: (1) oil removing equipment isolation technology in coordination with an oil-water separating unit isolation technology is adopted to remove solid impurities and fats and oils in minced fillet waste water; (2) a membrane separation technology is adopted to separate, purify and concentrate fish protein solution; (3) fish protein powder finished product is obtained after the fish protein solution is dried; (4) an enzymic method is adopted to dispose fish protein solution obtained through step (2), so as to prepare fish protein peptide; (5) fish protein peptide powder finished product is obtained after the fish protein peptide solution is dried. According to the method, the minced fillet waste water is adopted to change waste into valuable; an isolation technology system which is integrated by coordination with the oil removing equipment isolation technology, the oil-water separating unit isolation technology with the membrane separation technology is established; the problems that membrane pollution is serious, the service life is short in a conventional minced fillet waster water research and development technology are solved; the production cost is reduced; the producing fish protein products has high protein content; the safety of fish protein peptide product is high; the relative molecular weight is low averagely.

The invention discloses a method for preparing fish protein powder rich in fishskin collagen from a fishskin raw material which contains fish scale, fish fins, fish bone and a small amount of fish meat. The method comprises the following process steps: soaking in salt and alkaline solution, soaking in deionized water for desalination, stirring, modifying in microwaves, degrading complex enzyme at constant temperature, boiling, decolorizing, deodorizing, concentrating and drying. Concretely, the method comprises: transferring a fishskin raw material to salt and alkaline solution which contains 1 percent of NaCl and 1 percent of Na2CO3 and of which the weight is 10 times that of the fishskin raw material, soaking the fishsikn raw material for 12 hours, then soaking the fishskin raw material in deionized water, and washing the fishskin raw material till the pH value of the fishskin raw material is 7; draining, grinding in a meat grinder, adding deionized water in an amount which is 3 times that of the grind material, heating to the temperature of 55 DEG C, keeping the temperature constant, adding neutral protease in an amount which is 0.125 to 0.225 percent based on the weight of the fishskin raw material, and reacting for 0.5 hour under the action of microwaves at a power of 1,000 W; cooling to 45 DEG C, adding bromelain in an amount of 0.0258 to 0.125 percent based on the weight of the fishskin raw material, and continuing microwave treatment for 0.5 hour; and boiling and modifying for 0.5 hours, decolorizing by active carbon for 30 minutes, filtering with aid from kieselguhr, concentrating under reduced pressure, drying and obtaining fish protein powder. The protein extraction rate is more than 95 percent, the product is white powder, free from fish smell and rich in fishskin collagen, the average molecular weight of the product is less than 6,000Da, and the product can dissolve in water instantly.

The invention relates to an enteral nutrition emulsion used for tumor patients, which is characterized in that the emulsion of every 1000mL contains 30g to 50g of holothurian amylase, abalone amylase, oyster amylase or meretrix amylase, 50g to 70g of pearl oyster meat powder, soybean protein powder or fish protein powder, 15g to 25g of spirulina powder, 6ml to 8 ml of olive oil, 3g to 8g of an emulsifier and water of rest amount. The enteral nutrition emulsion can improve the activity of free radical scavenger enzymes of the organism, enhance the oxidation resistance of tissues and adjust the immune function so as to ensure the increasing trends of the weight, the upper-arm circumference and the skin fold thickness of the brachial triceps muscle of a sufferer, and gradually normalize various blood biochemical indicators, thereby reducing damages caused by operation or radiotherapy and chemotherapy to the immune system, being capable of providing nutritional supports for the tumor patients of head and neck cancer, esophageal cancer, pancreatic cancer, liver cancer, and the like as well as the tumor patients who accept radiotherapy and chemotherapy, and promoting the recovery of the patients.

The invention belongs to the technical field of aquatic product culture seedling growing bait processing and relates to a euphausia superba slice and its preparation method and use. The euphausia superba slice comprises 100-120 parts of euphausia superba slurry, 12-24 parts of Anabarilius powder, 4.5-9 parts of soybean protein isolate, 3-6 parts of fish protein powder, 2.4-4.8 parts of squid paste, 1.5-3 parts of modified starch, 0.9-1.8 parts of sodium alginate, 0.9-1.8 parts of gluten powder, 0.6-1.2 parts of lecithin, 0.3-0.6 parts of multi-vitamin-mineral premixed powder, 10-20 parts of fat-rich minced shrimp, 4-7 parts of polysorbate-80, 1-2 parts of fish oil, 1-2 parts of euphausia superba oil and 30-40 parts of water. The preparation method comprises euphausia superba slurry preparation, compounding, drying, crushing and packaging. The euphausia superba slice can be used as fish and shrimp juvenile initial feed. The euphausia superba and fat-rich minced shrimp with excellent protein composition and high polyunsaturated fatty acid content are used as main raw materials and through scientific compounding, nutrition reinforcement, fast roller drying and grading ultramicro-crushing, the initial feed which is prepared from natural raw materials, is strictly graded and has a wide application range is obtained.

The invention discloses a preparation technology of fish protein powder enriched in small-molecular active peptides which are mainly prepared from various low-value freshwater fishes or leftover materials of fish processing as raw materials, and especially relates to a preparation technology of natural fish protein powder by a biological fermentation method. The preparation technology utilizes chubs as the representative raw material of the low-value fishes, and comprises the following steps: pre-treating the raw material; grinding the pre-treated raw material by a rubber mill; and carrying out enzymolysis, fermentation, separation, blending, homogenization, micro-encapsulation, spray-drying, packing and so on, so that the instant high-protein fish powder which is good in color, flavor and taste is prepared. The fish protein powder prepared by the preparation technology is excellent in quality; the fish protein powder is enriched in healthy nutrients, including amino acids, flavor nucleotides, small-molecular active peptides, probiotics and the like; thus, the fish protein powder is stable in properties and convenient to be stored and transported; moreover, the fish protein powder is convenient to be used and high in added value. The fish protein powder can be used in the fields of functional food, instant food, seasoning, infant food, biological feed and the like. The fish protein powder has a wide market prospect.

The invention relates to a preparation method of instant silverfish protein powder. Silverfishes are taken as a raw material, and processes of raw material pretreatment, smashing, enzymolysis, enzyme deactivation, centrifugation, fishy smell elimination, concentration and spray drying are carried out, so that the instant silverfish protein powder is prepared, wherein silverfish protein hydrolysis degree reaches 49.10%, silverfish protein recovery rate reaches 98.00%, the product is milky white in colour and luster and convenient to carry, has no fishlike smell, is long in storage period, easily soluble and easily dispersed and is a functional fish protein powder product, and health food is provided for human while additional value of silverfishes is improved. Technology is relatively simple, and enzymolysis time is short, so that the preparation method of the instant silverfish protein powder is applicable to industrial application. The preparation method of the instant silverfish protein powder has positive influence on further developing the silverfishes and expanding types of highly processed products of the silverfishes.

The invention provides a snakehead larva fish feed. The snakehead larva fish feed is composed, by mass of dried matters, of 30-34 parts of fish meal, 2-4 parts of hydrolyzed fish protein powder, 5-8 parts of pork powder, 3-7 parts of spray-dried serum globulin powder, 3.5-7 parts of shrimp meal, 4-8 parts of krill meal, 9-11 parts of fermented soybean meal, 13-17 parts of flour, 4-8 parts of tapioca, 1.5-2 parts of fish oil, 1.5-2 parts of soybean oil, 1.5-2 parts of soybean lecithin oil, 1.5-2 parts of calcium dihydrogen phosphate, 1 part of Chinese herbal medicine compound preparation and 2 parts of premix additive, wherein the Chinese herbal medicine compound preparation consists of the substances of, in parts by weight, 12 parts of honeysuckle, 10 parts of safflower, 10 parts of tuckahoe, 8 parts of tuber onion seed, 6 parts of polygala tenuifolia, 4 parts of dodder and 50 parts of rice husk powder. The snakehead larva fish feed can enhance the immunity of snakehead, prevent the infection of visceral sarcoidosis, have good therapeutic efficacy on snakehead suffering from visceral sarcoidosis and improve the survival rate of snakehead in aquaculture.

The invention discloses infant nourishing rice flour. The infant nourishing rice flour is prepared from following raw materials, by weight, 200 to 210 parts of organic rice, 40 to 45 parts of yellow rice, 15 to 18 parts of brazil nut, 15 to 20 parts of black soya bean, 20 to 25 parts of purple cabbage, 20 to 25 parts of spinach, 10 to 12 parts of seaweed meal, 30 to 35 parts of apple, 15 to 20 parts of shaddock, 12 to 14 parts of brown sugar, 30 to 35 parts of skimmed milk powder, 15 to 18 parts of fish protein powder, 6 to 7 parts of Chinese pholidota herb, 12 to 14 parts of lycium barbarum L., 6 to 8 parts of lophatherum gracile, 12 to 14 parts of chrysanthemum morifolium Ramat, 5 to 6 parts of poria cocos, and 6 to 8 parts of an auxiliary agent. Beneficial effects of the infant nourishing rice flour are that: the infant nourishing rice flour is prepared via reasonable combination, so that mouthfeel is fine, and the infant nourishing rice flour is abundant and comprehensive in nutrients; the Chinese herbal medicine ingredients added into the infant nourishing rice flour are capable of invigorateing blood circulation and clearing arteries and veins, moistening intestines and relaxing bowel, and clearing heat and causing dieresis, so that the infant nourishing rice flour can be easily absorbed by infants.

The invention relates to the field of aquaculture, and discloses a sinking feed for aquaculture animals in middle and lower layers and a preparation method thereof. The sinking feed is prepared from the following components in parts by weight: 30 to 40 parts of bean pulp, 20 to 30 parts of shrimp meal powder, 10 to 14 parts of fish protein powder, 6 to 12 parts of animal fat, 3 to 5 parts of beer yeast powder, 1 to 3 parts of Chinese herbal medicine, 3 to 5 parts of sinking feeding attraction particles, 0.5 to 1.5 parts of choline chloride, 3 to 5 parts of decavitamin, 3 to 5 parts of complex mineral substance, and 0.3 to 0.5 part of complex enzyme preparation. The sinking fish feed provided by the invention has sinkability so as to be convenient to be taken by the aquaculture animals in the middle and lower layers; and the fish feed is comprehensive in nutrition, good in palatability and feeding attractiveness, and less in water pollution.

The invention discloses a preparation method of mullet protein source antioxidant peptide. The method comprises the following steps: preparing fresh mullet into minced fish, performing freeze drying on the minced fish, and crushing the minced fish, so as to obtain freeze-dried fish meal; defatting the freeze-dried fish meal through ethyl acetate, performing freeze drying, and curshing, so as to obtain defatted mullet protein power (GM); performing enzymolysis on the defatted mullet protein power (GM), performing centrifugation, and performing freeze drying on obtained centrifugate, so as to obtain crude antioxidant peptide (HGM). The crude antioxidant peptide (HGM) is further separated and purified, so that the mullet protein source antioxidant peptide is obtained. Through the method, mullet protein source antioxidant peptide with high antioxidant activity can be obtained.

The invention belongs to the technical field of bioengineering, and provides a method for producing pharmaceutical-grade protein peptide powder by taking salmon as a raw material in order to solve the technical problems existing in the process of extracting and purifying protein peptide powder by taking the salmon as the raw material. The method comprises the steps that by means of comprehensive application of endonuclease and exonuclease, zymolyte is subjected to secondary enzymolysis, three-time filtration and standing; the obtained protein peptide powder can completely meet index requirements of the pharmaceutical-grade protein peptide powder and serve as the raw material of medical grade peptone, health-care product grade fish protein powder and compound amino acid powder.

The invention relates to a hydrolyzed fish protein powder and a preparation method thereof, belonging to the technical fields of food protein and food protein processing. The preparation method of the hydrolyzed fish protein powder comprises the following steps: firstly determining a raw fish material used for hydrolysis; then hydrolyzing by virtue of protease of the raw fish material; and finally heating hydrolyzate to inactivate the protease, extracting the hydrolyzate, concentrating, and drying, thus the hydrolyzed fish protein powder is obtained. The hydrolyzed fish protein powder comprises protein, hydrolyzed protein, polypeptide, free amino acid, fat, carbohydrate and mineral substances, wherein the ratio of the total content of the hydrolyzed protein in the hydrolyzed fish protein powder to the total content of the protein and the ratio of the total content of the free amino acid to the total content of the hydrolyzed protein are high, and oligopeptide is also contained in the hydrolyzed fish protein powder. The invention has the advantages that in the method, human resource can be saved and waste of the raw fish material is avoided, thus being convenient for mechanized production; meanwhile, the hydrolysis process is efficient and coordinated, the quality of hydrolyzed product is high, especially the content of the free amino acid and oligopeptide is high. The hydrolyzed fish protein powder product in the invention is a human nutrition enriching supplement which is prepared from fresh water fish raw material, contains no additive, preservative, organic solvent or man-made addition material, has high water solubility and high free amino acid content and is natural.

The invention belongs to the technical field of medicinal material planting, and particularly relates to a method for planting leonurus artemisia rich in various trace elements. The method mainly comprises the following steps of (1), land selection and land preparation; (2), sowing; (3), transplanting; (4), fertilizer and water management. By using rationally formulated base fertilizers and nutrient fertilizers, the nutrition is comprehensive and balanced, sufficient nutrients are provided for the growth of the leonurus artemisia, the rapid growth of the leonurus artemisia can be scientifically coordinated, and especially various trace nutritional elements are effectively enriched in the leonurus artemisia to improve quality and increase yield. The base fertilizers are composed of chitin,fish protein powder, sodium alginate, humic acid, urea, calcium magnesium phosphate fertilizer, complex amino acid, chelated micro element fertilizer and diatomite; the nutrient fertilizers are composed of mushroom residues, decomposed chicken manure, mixed bacterial agent, neem seed extract, urea, ammonium dihydrogen phosphate, potassium nitrate and chelated micro element fertilizer.

The invention discloses a fish protein fertilizer capable of promoting the growth of plants and a preparation method of the fish protein fertilizer. The fish protein fertilizer comprises the followingcomponents in parts by weight: 65-85 parts of fish proteins, 4-6 parts of methionine, 3-5 parts of tryptophan and 15-20 parts of modified chitosan. The preparation method of the fish protein fertilizer comprises the steps: firstly, adding methionine and tryptophan into the fish proteins so as to be premixed, and carrying out grinding and sieving to obtain protein powder with uniform particle size; secondly, adding the protein powder into a ball mill, adding water serving as a medium water and modified chitosan, and adsorbing the protein powder into the modified chitosan by mechanical mixing to obtain a wet product of the fish protein fertilizer; and thirdly, placing the wet product of the fish protein fertilizer into a vacuum drying oven, and carrying out drying to obtain a finished product of the fish protein fertilizer. The prepared fish protein fertilizer is free of salts and heavy metal residues, high in nitrogen content, good in water solubility and long in shelf life, can be widely applied to operation of fertilizer application to leaves and root systems of plants and plays a role in actively promoting the growth of crops.

The invention discloses a method for preparing hydrolyzed fish protein powder by utilizing electron beam irradiation and combining an enzymolysis technology, and belongs to the technical field of aquatic product deep processing. The main process of the method comprises the following steps: adding maltodextrin, emulsified starch and the like after washing and carrying out crushing by a meat grinder, electron beam irradiation and enzyme hydrolysis on (fresh, refrigerated or frozen) fish, and carrying out spray drying after emulsifying and homogenizing, thus finally obtaining the hydrolyzed fish protein powder. According to the method disclosed by the invention, electron beam irradiation treatment is carried out before enzyme hydrolysis of fish protein, so that the tissue structure of the fish protein can be loosened, the protein degradation during the enzyme hydrolysis of the fish protein is facilitated, and the efficiency of enzyme can be greatly increased; irradiation also realizes a sterilization effect, so that all kinds of microorganisms in raw materials can be effectively controlled, and a working procedure of cooling after heating during the enzyme hydrolysis is not needed; hydrolyzed fish protein liquid can be emulsified and homogenized before spray drying, the effect of carrying out microencapsulated embedding treatment on fatty acid grease in the raw materials of fish is obtained, the oxidization level of the fatty acid grease in a product processing and storing processes is reduced, and the product quality is enabled to be more stable.

The invention provides a high-solubility cod protein. The high-solubility cod protein is prepared by steps: taking cod meat as a raw material, extracting cod protein isolate by means of isoelectric precipitation, and performing vacuum freeze-drying to obtain cod protein isolate powder; dissolving the cod protein isolate powder into water to obtain cod protein dispersion liquid, adopting alkaline solution for adjusting pH to 7.0-10.0, adding proteinase, and hydrolyzing to obtain cod protein isolate hydrolysis liquid; subjecting the cod protein isolate hydrolysis liquid to water bath at 85-100 DEG C to inactivate the proteinase for 5-15min, cooling to the room temperature, centrifuging for 5-15min at a rotating speed of 2000-5000r / min, taking supernatant, and performing reduced-pressure evaporation concentration and vacuum freeze drying to obtain the high-solubility cod protein. Solubility of the cod protein obtained through the process is improved from 11.22% to 80.35%, and the high-solubility cod protein is excellent in emulsification and foaming performances.

The invention relates to the field of aquaculture, and discloses feeding promoting type shrimp and crab feed. The feed comprises the following components in parts by weight: 45-55 parts of fish protein powder, 15-25 parts of soybean meal, 10-20 parts of oil and lipid, 1-3 parts of Chinese herbal medicines, 3-5 parts of feeding promoting particles, 0.5-1.5 parts of choline chloride, 3-5 parts of complex vitamins, 3-5 parts of complex mineral substances, 0.3-0.5 part of a compound enzyme preparation, and 0.0001-0.0003 part of Rhodospirillum Molisch. The fish feed has the advantages of comprehensive nutrition, palatability, and good feeding promoting performance; and the feed can reduce disease incidence of shrimps and crabs, and has little pollution for water body.

The invention discloses a processing method of a high-quality anchovy albumen powder product. The method comprises steps as follows: pretreatment of anchovies, enzymolysis, fermentation with aspergillus oryzae, filtration, concentration, spray drying and adding of auxiliary materials, and the anchovy albumen powder product is obtained. The processing method has the benefits as follows: the prepared anchovy albumen powder product tastes very fresh, and protein peptide and amino acid of seafood have good fresh flavor development; the anchovy albumen powder product contains rich nutrients and comprehensive amino acids and is beneficial to health; the anchovy albumen powder product is safe, has no side effects and is prepared through deep processing of natural and pollution-free ocean fish; the added auxiliary materials are favorable for nutrition balance of food, also have a complementation function and have better aroma; the product is good in quality stability and cheap and has good economic benefits.

The invention belongs to the technical field of food processing, and concretely discloses a method for extracting fish protein. The method comprises the following steps of preparing minced fillet; eliminating fishy smell; preparing raw mixed materials; performing enzyme extraction, degreasing and debitterizing, catabolic enzyme inactivation, decoloring, concentration and powder preparation, wherein during the fishy smell elimination, a used fishy smell elimination solution is prepared from water, edible vinegar, yellow wine and fat oxidation inhibitors; the fat oxidation inhibitors are one kind of materials from catechin, tannin or flavone or a mixture of more than two kinds of materials from catechin, tannin or flavone; the composite catabolic enzyme used for enzymolysis extraction is prepared from bromelain, papain, trypsin, pepsin and subtilisin; ion exchange resin used in decoloring is macroporous basic anion resin. The method has the following advantages that the fishy smell and the bitter taste of the fish protein can be completely eliminated; the decoloring effect is good; the whiteness of the fish protein powder is high; the protein content is high; the fat content is low; the fish protein yield is high; the quality is high.

The present invention discloses a small coarse fish protein powder product. The small coarse fish protein powder product is prepared by small coarse fish pretreating, degreasing, enzymolyzing, deodorizing, ultra-filtering, desalting and spray drying. Beneficial effects are as follows: the small coarse fish is used as a raw material and cheap in costs, a treatment method of the low-value small coarse fish is increased, the resource is reasonably applied and an added value of the small coarse fish is increased. The prepared small coarse fish protein powder is small in molecular weight, easy for digestion and absorption by human body, free of smelly smell, high in purity and activity of proteins, and excellent in product quality. During the enzymolyzing, an infrared temperature control is used, a production cycle is greatly shortened, time costs and labor costs are reduced, and a processing method is simple, high in reproducibility and suitable for mass productions.

The invention discloses a preparation method of a biodegradable nitrogen and phosphorus slow-release fertilizer and belongs to the field of fertilizer preparation technology. The preparation method comprises the following steps: a) mixing carrageenan, soyabean lecithin, rapeseed oil, a potassium dihydrogen phosphate solution, expanded vermiculite, fish protein powder and sodium stearate, and carrying out ultrasonic dispersion; b) coating a fertilizer master batch A with the mixed liquor, drying and cooling to room temperature so as to prepare fertilizer granules; c) mixing a fertilizer master batch B, expanded corn flour and the fertilizer granules so as to prepare compound fertilizer granules; and d) obtaining beta-cyclodextrin and a potassium nitrate solution, adding the compound fertilizer granules, stirring, drying and cooling to room temperature so as to prepare the biodegradable nitrogen and phosphorus slow-release fertilizer. The method is suitable for preparation of a water-soluble slow-release fertilizer. The coating material is a degradable material and is pollution-free to soil. The technology of the invention is simple and convenient to operate, has short technological cycle, causes no wastes, accords with the ideal of atom economy and environmental protection, and is beneficial to industrial promotion and application.

The invention relates to a compound feed for improving the intestinal health of largemouth basses and a preparation method and application thereof. The compound feed for improving the intestinal health of the largemouth basses comprises the following components in parts by weight: 10-20 parts of fishmeal, 5-10 parts of chicken powder, 10-20 parts of hydrolyzed fish protein powder, 10-15 parts of pork powder, 2-5 parts of spray-dried blood cells, 1-5 parts of silkworm chrysalis meal, 3-5 parts of corn protein powder, 4-6 parts of soybean meal, 15-20 parts of flour, 1-2 parts of fish oil, 3-5 parts of soybean oil, 1-3 parts of soybean phospholipid oil, 3-5 parts of yeast enzymatic hydrolysate, 0.01-0.1 part of glyceryl tributyrate, 1-2 parts of stachyose, 1-2 parts of xylan, 2.5-3 parts of calcium dihydrogen phosphate, 1-2 parts of choline chloride and 1-2 parts of freshwater fish premix. The compound feed has the beneficial effects that (1) a synergistic effect is achieved, and the intestinal health of the largemouth basses can be effectively improved; and (2) the compound feed of the present invention is balanced in nutrition, the largemouth basses grow rapidly after being fed withthe compound feed, and the disease resistance is strong.