71 results about "Calcium content" patented technology

The invention provides modified milk powder capable of promoting bone health as well as a preparation method and application of the modified milk powder. The total protein content of the modified milk powder is 17-35 g / 100 g, the fat content of the modified milk powder is 1-32 g / 100 g, and the calcium content of the modified milk powder is 0.8-2.1 g / 100 g. Moreover, the modified milk powder contains bovine coloctrum and lactoferrin, the mass ratio of the bovine coloctrum to the lactoferrin is (5-100): 1 on the basis of the dry matter content, and the content of the lactoferrin in the modified milk powder is 2-400 mg / 100 g. The bovine colostrum and the lactoferrin are combined for preparing the milk powder, have a synergistic effect on promoting osteoblasts and inhibiting osteoclast proliferation, and are beneficial to bone health.

The invention belongs to the technical field of fruit tree cultivation and plant growth regulation, and particularly relates to a plant growth regulator containing 5-ALA and application of the plant growth regulator in prunus humilis planting. According to the method disclosed by the invention, the nutritional quality of fruits is remarkably improved by spraying a 100 mg / L 5-ALA solution on the whole cerasus humilis plant. Compared with clear water, the sugar content of the cerasus humilis fruits treated by the 5-ALA in the full ripening stage is increased by 44.01%, the acidity is reduced by 23.75%, the soluble solids are increased by 60.22%, and the flavor of the fruits is remarkably improved; meanwhile, the total calcium content of the fruits is increased by 30.22%, the water-soluble calcium content is increased by 91.12%, the pectin calcium content is reduced by 30.04%, and the active calcium content is increased by 50.74%; the content of soluble protein is increased by 30.98%, so that the acidity is reduced, and sugar, calcium and protein are synergistically improved.

The invention relates to the technical field of fermentation, in particular to fermented lonicera caerulea juice capable of reducing astringency and increasing the content of organic calcium as well as a preparation method and application of the fermented lonicera caerulea juice. The fermented lonicera caerulea juice disclosed by the invention is prepared from the following components in parts by mass: 95 to 105 parts of lonicera caerulea pulp, 0.5 to 1 part of eggshell powder and 1 to 4 parts of fermentation bacteria. The calcium content in the fermented lonicera caerulea juice prepared by the method disclosed by the invention can be up to 2000mg / L, bitter and astringent substances such as ellagic acid and secologanin are effectively reduced, the bitter and astringent taste is improved, and the roundness and aroma acceptance of the whole taste are improved. The obtained lonicera caerulea fermented juice is pleasant in flavor, balanced in nutrition, high in calcium content and suitable for development of functional beverages and healthy food.

The invention provides a moulting feed for laying hens and an artificial moulting method for quickly recovering high yield, and the moulting feed for laying hens comprises the following raw materials in parts by mass: 7-8 parts of Chinese prickly ash seeds, 20-22 parts of crude protein feed, 0.5-2 parts of yeast culture, 2-4 parts of threonine residues, 8-10 parts of calcium-containing supplement, 0.1-1 part of soybean oil, 50-65 parts of corn and 2-3 parts of LD625. Wherein the content of crude protein is 15%-16%, and the content of calcium is 3%-4.0%. The specific formula of the laying hen moulting feed is optimally designed, and the illumination intensity and time in the moulting process are regulated and controlled, so that the second laying rate can quickly reach the peak and the second laying peak lasts for a long time after primary artificial moulting, and the laying rate of laying hens can reach the peak after secondary artificial moulting. The third-time egg laying rate can quickly reach the peak, the duration time of the third-time egg laying peak is long, the continuous and excellent egg laying effect is achieved, the moulting cost is reduced, the breeding period is prolonged, and application and popularization are facilitated.

The invention provides a probiotic fermentation and bacterial powder compound addition chewable tablet and a preparation method thereof, and belongs to the technical field of microorganisms, the preparation method comprises the following steps: respectively adding water into apple peel, cerasus humilis fruits and aronia melanocarpa fruits, pulping, and mixing in proportion to obtain mixed fruit pulp; a mixed bacterium solution of lactobacillus plantarum LNJ-HQ-01 and lactobacillus fermentum BNCC194390 is added into the mixed fruit pulp, and fermentation is performed; freeze-drying and grinding the fermented fruit pulp to obtain freeze-dried fruit powder; the preparation method comprises the following steps: respectively activating lactobacillus plantarum LNJ-HQ-01, lactobacillus acidophilus BNCC186447 and lactobacillus rhamnosus ATCC7469, performing enlarged culture, taking bacterial sludge, uniformly mixing the bacterial sludge with a freeze-drying protective additive, and performing freeze-drying to obtain freeze-dried bacterial powder; and uniformly mixing the fruit powder, the freeze-dried bacterial powder and the medicinal auxiliary materials, and tabletting to obtain the probiotic chewable tablets. The probiotic chewable tablet is high in dietary fiber content, effective calcium content and total phenol content, high in oxidation resistance and suitable for calcium supplement of special groups such as diabetics and the like.

The invention relates to a pellet and a preparation method thereof, and relates to the technical field of calcium carbide preparation, the pellet comprises the following components in parts by mass: 5.2-8.3 parts of calcium carbonate crystal, 56.8-59.7 parts of calcium oxide, 32.0-37.5 parts of calcium hydroxide, and 0.6-0.9 part of carboxylation modified lignin; the preparation process comprises the steps of raw material pretreatment, mineralization slurry preparation, mineralization and curing. According to the pellet and the preparation method, the active lime screen underflow serves as a calcium source, a stable structure with high strength and multistage pores is constructed on the molecular scale by adopting the biomimetic mineralization principle, and the pellet cracking risk is effectively reduced; meanwhile, an inert binder does not need to be added, effective calcium content dilution is avoided, the high-temperature smelting working condition of the distribution stone is adapted, and the production cost is remarkably reduced.

The invention relates to the technical field of chemistry, in particular to a method for preparing magnesium hydroxide from a magnesium salt solution through a gaseous ammonia precipitation method, and the method is particularly suitable for extracting magnesium hydroxide from multi-component water mineral raw materials with high calcium content. The method comprises the following steps: in a nitrogen or inert gas atmosphere, introducing gaseous ammonia into a magnesium salt solution (comprising a multi-component water mineral raw material containing high-concentration calcium), and controlling the molar ratio of NH to Mg to be 2.5: 1-4: 1, so that magnesium hydroxide is precipitated and separated out; and after the precipitation process is completed, filtering and washing under the same atmosphere, and drying and crushing the obtained product. The method can realize one-step high-efficiency separation of magnesium hydroxide, and is also suitable for taking a multi-component natural mineral raw material with high calcium content as an initial solution.

A system and method for process water and oxide coating recovery and distribution in a direct reduction system, such as a system for producing direct reduced iron. A warm lime softener is used to remove (recover) calcium, alkalinity, and other constituents from the process water system and to produce an effluent that can be further processed and returned as makeup to the process water system. The lime softening process requires lime (or similar material) to be added to the influent, thereby increasing the calcium and pH levels until they become supersaturated and precipitate. This chemical process results in effluent that is low in calcium, alkalinity, and total suspended solids.

The invention belongs to the technical field of solid waste treatment, and particularly discloses a preparation method for increasing the content of soluble calcium in fish bones. The method comprises the following steps: pretreating fish bones to obtain fish bone powder; mixing fish bone meal and water, and sterilizing to obtain a fermentation substrate; according to the method, bacillus subtilis, lactobacillus plantarum and saccharomycetes are adopted for multi-strain sequential fermentation, the bacillus subtilis is inoculated firstly for ventilation fermentation for 2-4 days, the pH is adjusted to 6.5-7.0, then sterilization is performed, a carbon source is added, a mixed bacterium solution of the lactobacillus plantarum and the saccharomycetes is inoculated, and ventilation fermentation is performed for 2-4 days. Through a specific strain combination and an innovative sequential fermentation process, the enzyme production capacity of bacillus subtilis and the acid production capacity of lactobacillus plantarum and saccharomycetes are remarkably improved, dissolution of calcium in fish bones is synergistically promoted, the problem of bitter taste generated by a traditional enzymolysis method is avoided, and the method has the advantages of high efficiency, greenness and complete nutrition retention.

The invention provides a planting method of hydroponic lettuce, and relates to the technical field of vegetable cultivation. According to the planting method for hydroponic lettuce, after field planting and hydroponic culture are conducted on lettuce seedlings, a combined artificial light source with the red-blue light ratio being (3-7): 1 is adopted for irradiation; the EC value of the nutrient solution after field planting and before harvesting is 0.8-1.5 mS / cm. According to the planting method of the hydroponic lettuce, after the lettuce seedlings are subjected to field planting and hydroponic culture, red and blue light quality regulation and nutrient solution concentration adjustment are added, a hydroponic lettuce growth synergistic system is constructed through the red and blue light quality regulation and nutrient solution concentration adjustment, the growth system is optimized, high-quality growth of the hydroponic lettuce is achieved, synthesis of secondary metabolites is stimulated, and the yield of the hydroponic lettuce is increased. Flavor substances are accumulated, the vitamin content is increased, and the nitrate content is reduced, so that the lettuce quality is improved, the calcium content is increased, the transpiration is enhanced, and the problem of edge burning is effectively solved.

The invention relates to a glass batch for a glass article. The glass batch comprises, by weight, a first raw material group containing 0-65% SiO2, a second raw material group containing 5-60% AI2O3, a third raw material group containing 10-45% MgO, a fourth raw material group containing 0-13% CaO or CaCO3, a fifth raw material group containing 0-20% Na2CO3 and / or 10-30% Na2O or combinations thereof, and a sixth raw material group containing 0-5% B2O3.

The invention discloses a cultivation method for enhancing the total amount of bio-available calcium of edible parts of pakchoi, and relates to the technical field of Chinese cabbage cultivation, and the method comprises the following steps: variety screening, seedling raising, transplanting, foliar fertilizer spraying, cultivation and picking. Through the design of high-calcium variety screening, calcium nutrition pretreatment in the seedling raising period, foliar calcium supplement and potassium fertilizer synergistic application, the calcium content of the edible part of the pakchoi is increased, more importantly, the absorption, transport and accumulation process of calcium in the plant body is optimized, the total amount of bio-available calcium which can be actually absorbed and utilized by the human body in the edible part is increased, and the yield of the pakchoi is increased. The problem that an existing calcium fertilizer application and biological enhancement technology cannot guarantee effective calcium absorption of a human body is solved. Aiming at the problems of low absorption efficiency of traditional soil calcium fertilizer application and lack of systematicness of a foliar calcium fertilizer technology, through pretreatment of an EDTA calcium complex in a seedling raising period, precipitation which is difficult to absorb and formed by combination of calcium and other substances in soil or a matrix is avoided, and an efficient calcium absorption basis is constructed for seedlings.

The invention relates to the technical field of food processing, in particular to recombined meat, sauce stewed recombined meat and a preparation method thereof. The reconstituted meat provided by the invention is prepared from the following raw materials: dry materials and water, the dry materials comprise the following components in parts by weight: 50 to 70 parts of fish meat, 10 to 20 parts of pork, 3 to 8 parts of peptide calcium powder, 5 to 15 parts of soybean protein isolate, 2 to 6 parts of cassava starch, 1.5 to 3.5 parts of coix seed powder, 1.0 to 1.5 parts of TG enzyme, 0.4 to 0.8 part of carrageenan and 1.5 to 2.5 parts of table salt. According to the recombinant meat provided by the invention, the fish meat and the pork are used as main base materials, various functional components such as the peptide calcium powder, the soybean protein isolate, the cassava starch and the coix seed powder are combined, scientific proportioning of the raw materials is realized, and the recombinant meat is high in protein and calcium content, low in fishy smell, good in texture and water retention, good in flavor, low in salt content and rich in taste, and has very high safety and edible value.

The present application relates to the technical field of fertilizer, and especially relates to a biological coupling powder rich in mineral nutrition and a preparation method thereof, which comprises the following steps: activating calcium magnesium potassium sulfate to obtain activated calcium magnesium potassium sulfate, and determining whether the activation is qualified; in response to the qualified activation, mixing the activated calcium magnesium potassium sulfate with organic raw materials, determining whether the affinity and dissociation of the activated calcium magnesium potassium sulfate and the organic raw materials meet the standard based on the increment of water-soluble calcium and the pH change rate; in response to the qualified affinity and dissociation, determining the balance treatment of the mixture, and obtaining fermentation substrate; spraying a compound microbial inoculum to the fermentation substrate in a preset stage for solid-state aerobic fermentation treatment, determining the addition of the compound microbial inoculum based on the change rate of water-soluble calcium content, and obtaining fermentation product; aging the fermentation product, determining whether to extend the aging time based on the humification coefficient, and drying the fermentation product to obtain the biological coupling powder. The present application improves the biological coupling property of mineral nutrition and organic raw materials.

The application discloses a method for determining water-soluble calcium content in stone powder, and relates to the technical field of material detection. The method comprises the following steps: firstly, mixing a stone powder sample with water to extract a sample solution; then, adding an excess of sodium bicarbonate solution to part of the sample solution, heating at 70-80 DEG C, cooling and standing, and then treating the sample solution by filtration, washing and drying to obtain a precipitate; finally, calculating the water-soluble calcium content in the stone powder according to the mass of the precipitate. The method realizes accurate detection of the water-soluble calcium content through sodium bicarbonate precipitation and constant weight determination. The method can also realize batch detection of samples, improves work efficiency, and is safe and environmentally friendly in the experimental process.

The application discloses a method for predicting total intestinal digestible calcium and phosphorus content of growing pigs based on a linear model, and relates to a method for estimating total intestinal digestible calcium and phosphorus content, comprising the following steps: S1, arranging collected data sets through a preprocessing module to obtain an initial data set containing input features and target variables; the target variables include total intestinal digestible calcium content ATTD_Ca and total intestinal digestible phosphorus content ATTD_P measured through a digestion test; S2, performing feature analysis and screening on the initial data set through a feature engineering module to obtain a data sample constructed by a feature subset adapted to the target variables; S3, respectively constructing linear prediction models related to the prediction of each target variable, and training, optimizing and verifying the linear prediction models by using the data sample; and S4, importing feature data of a new feed formula to be predicted, selecting the data sample through S1-S2, and obtaining a prediction value of the target variable through the linear prediction model.

The invention discloses a method for producing aluminum oxide by using carbide slag instead of lime, which comprises the following steps: in the process of dissolving out bauxite by a Bayer process, adding carbide slag into circulating mother liquor, and carrying out dissolution treatment. According to the method for producing the aluminum oxide by using the carbide slag instead of the lime, the dissolution effect of the bauxite is equivalent to that of the traditional lime. The calcium-containing characteristic of the carbide slag is utilized, the effect of lime in the Bayer process dissolution process is ingeniously replaced, the effects of turning waste into wealth and recycling waste are achieved, and remarkable economic and social benefits are achieved.

The invention discloses a method for measuring the calcium content of a seamless pure calcium line, and aims to solve the problem of inaccurate detection of a sample containing an oxide layer. According to the method disclosed by the invention, a two-step acidolysis strategy of diluted hydrochloric acid-hexamethylenetetramine and glacial acetic acid warming is adopted, so that comprehensive and rapid dissolution of metal calcium and calcium oxide and super-strong protection of iron sheets are realized; a gradient alkalization masking strategy of triethanolamine-ammonia water-potassium hydroxide is adopted, so that deep masking of interference ions and an acute titration end point are realized. The method has the advantages of good selectivity, strong anti-interference capability, high accuracy and simple operation, and is especially suitable for accurate quality evaluation of seamless pure calcium line products in iron and steel enterprises.

The invention provides a calcium balance control method and system for producing aluminum oxide through a low-temperature Bayer process, and belongs to the field of aluminum oxide metallurgy. The method comprises the following steps: mixing bauxite with a blending solution, and then carrying out pre-desiliconization dissolution to obtain pre-desiliconization slurry; carrying out high-temperature dissolution on the pre-desiliconized slurry, and then carrying out settling separation to obtain a decomposed stock solution; mixing part of the decomposed stock solution with lime milk for reaction to obtain an activating solution; adding the activation solution into the rest of the decomposition stock solution, filtering, and dynamically adjusting the addition amount of the activation solution to obtain a refined decomposition stock solution with the Ca < 2 + > concentration of less than or equal to 15 ppm; and judging whether the calcium content in first-tank aluminum hydroxide obtained after seed decomposition of the refined decomposition stock solution is not greater than 180ppm or not, and if so, continuing seed decomposition of the refined decomposition stock solution to obtain low-calcium aluminum hydroxide. Therefore, the technical problem that the calcium content in the aluminum oxide product subjected to pre-desilicication by using guinea ore is increased is solved.

The utility model relates to the technical field of X fluorescence sulfur-calcium-iron analyzers, in particular to a calcium content detection device applied to calcium carbonate powder, which comprises an X fluorescence sulfur-calcium-iron analyzer, a touch screen is electrically mounted on the surface of the X fluorescence sulfur-calcium-iron analyzer, a drawing plate is slidably connected in the X fluorescence sulfur-calcium-iron analyzer, and the X fluorescence sulfur-calcium-iron analyzer is electrically connected with the touch screen. A limiting device is arranged on the surface of the pulling plate and comprises a sliding groove formed in the inner side of the pulling plate. According to the utility model, the limiting device is arranged, so that the cake-shaped calcium carbonate powder sample can be flexibly limited conveniently, and the phenomenon that the cake-shaped calcium carbonate powder sample is easy to crack in the process of directly placing the cake-shaped calcium carbonate powder sample on the inner side of the drawing plate is avoided; the limiting device not only facilitates limiting work of cake-shaped calcium carbonate powder samples with different sizes and structures, but also effectively avoids fragmentation of the cake-shaped calcium carbonate powder samples, so that the accuracy of detecting the calcium content in the cake-shaped calcium carbonate powder samples is improved to a certain extent.

The invention relates to the technical field of feed additives, and provides a feed additive which is composed of an organic trace element group, a medicinal and edible plant group, a functional nutrition group and a compound vitamin group according to specific parts by weight, wherein the organic trace element group comprises 550-650 g of organic selenium, 250-350 g of zinc methionine and 150-250 g of glycine iron; the medicinal and edible plant group comprises 35-45 kg of astragalus membranaceus powder, 25-35 kg of Chinese wolfberry fruit powder and 20-30 kg of Chinese yam powder; and the functional nutrition group comprises 45-65kg of spirulina powder of 100-200 meshes and 1.0-1.5 kg of soybean lecithin with the phosphatidylcholine content of more than or equal to 20%. Medicinal and edible plants and organic trace elements are combined, risk raw materials such as inorganic selenium are abandoned, and scientific synergistic matching is combined, so that the selenium content and the calcium content of egg products are stably increased, heavy metal and antibiotic residues are not detected, the cholesterol content is remarkably reduced, and the egg products completely meet the food safety standard; the core problems that a traditional additive is insufficient in safety and unstable in nutrition enrichment are solved.

This invention relates to a method for synergistic calcium reduction and quality improvement of magnesite. The method first establishes the intrinsic relationship between each ore particle and the grade of various chemical components, including MgO, based on the differences in surface texture, luster, roughness, and color of the various minerals in the raw magnesite ore. Standard samples of magnesite concentrate, tailings, and intermediate products are then selected, thereby establishing an artificial intelligence (AI) pre-selection model. The AI ​​pre-selection model is used to intelligently pre-select and remove tailings from coarse-grained magnesite. The intermediate products obtained from the intelligent pre-selection undergo reverse flotation for desilication, forward flotation for calcium reduction, and magnetic separation for iron reduction to obtain magnesite concentrate and tailings. This method leverages the synergistic effect of intelligent pre-selection and traditional flotation for calcium reduction, overcoming the limitations of flotation for calcium reduction and significantly reducing the calcium content of the magnesite concentrate product. This method has the advantages of simple operation, low production cost, and high efficiency.

The invention relates to the technical field of food, in particular to a high-calcium-content and high-absorption type calcium vitamin D composition and a preparation method thereof. According to the high-calcium-content and high-absorption type calcium vitamin D composition, every 1000 parts by weight of the calcium vitamin D composition is prepared from the following components in parts by weight: 100 to 300 parts of calcium citrate, 60 to 130 parts of xylitol, 0.1 to 5 parts of L-calcium lactate, 0.001 to 0.01 part of vitamin D3, 2 to 7 parts of a pH regulator, 5 to 17 parts of colloid, 1 to 10 parts of caprylic / capric glyceride, 1 to 5 parts of vitamin C and the balance of water; the colloid comprises Sanzan gum, Arabic gum and xanthan gum. The calcium vitamin D composition has the advantages of higher calcium content, better stability and taste and higher absorption rate.

The application provides a quick self-detection method of effective calcium content based on conductivity test, and relates to the technical field of road engineering detection. The quick self-detection method of effective calcium content comprises the following steps: configuring ammonium chloride solution and lime stabilized material; putting the lime stabilized material into a beaker, adding water, and configuring into a mixed solution; assembling and calibrating a conductivity meter, erecting an electrode and a burette; using the ammonium chloride solution to conduct titration experiment, and detecting the conductivity of the solution by using the conductivity meter; recording the corresponding relationship between the titration amount of the ammonium chloride solution and the conductivity, drawing a curve image, and finding the titration amount of the ammonium chloride solution at the reaction end point; and calculating the effective calcium content in the lime stabilized material according to the titration amount at the reaction end point. The application accurately detects the effective calcium content in the lime stabilized material through the change rule of the conductivity, simplifies the experimental steps, does not need to draw a standard curve, shortens the detection time, and improves the detection and construction efficiency.

The invention relates to the field of breeding and food, and discloses a fattening pig feed, a fattening pig feeding method and a low-cholesterol pigtails, the feed comprises 5-35 wt% of citrus residue fermentation product, 50-70 wt% of corn and 10-25 wt% of soybean meal based on the total amount of the fattening pig feed; wherein the fermented citrus pulp comprises citrus pulp, auxiliary materials, microbial agents and enzyme preparations, the auxiliary materials comprise corn and soybean meal, the microbial agents comprise bacillus subtilis and bacillus licheniformis, and the enzyme preparations comprise xylanase, glucanase, mannase and cellulase. After fattening pigs are fed with the feed provided by the invention, the obtained pigtails have the characteristics of low fishy smell, good smell, low cholesterol content, high calcium and magnesium content and the like. The operation method provided by the invention is simple and easy to implement, and the quality improvement effect of the pigtail food material is remarkable.

The utility model belongs to the technical field of experimental equipment, and particularly relates to a bracket special for calcium content titration. The special support for calcium content titration comprises a base, a reagent bottle and a burette, a control panel is arranged on one side of the base, a placement table is arranged above the base, a bottom plate is placed above the placement table through a groove, the reagent bottle is placed on the bottom plate, and the burette is arranged on the bottom plate. An electronic scale is arranged at the position, below the bottom plate, of the placement table; a vertical rod is arranged on the side, away from the control panel, of the containing table, an adjusting plate is arranged on one side of the vertical rod, an adjusting frame of a Z-shaped structure is slidably connected to the adjusting plate, and a lighting lamp is rotationally connected to one end of the adjusting frame through a spherical universal shaft. A supporting rod is slidably connected to the outer side of the vertical rod through an adjusting ring, a movable clamping jaw is slidably connected to the supporting rod, and the burette is clamped on the movable clamping jaw.

A system and method for process water and oxide coating recovery and distribution in a direct reduction system, such as a system for producing direct reduced iron. A warm lime softener is used to remove (recover) calcium, alkalinity, and other constituents from the process water system and to produce an effluent that can be further processed and returned as makeup to the process water system. The lime softening process requires lime (or similar material) to be added to the influent, thereby increasing the calcium and pH levels until they become supersaturated and precipitate. This chemical process results in effluent that is low in calcium, alkalinity, and total suspended solids.

The application discloses a calcium-aluminum composite emulsion and a preparation method and application thereof, and belongs to the technical field of industrial solid waste treatment and environmental protection. The calcium-aluminum composite emulsion is mainly prepared from composite powders of aluminum oxide and calcium oxide, has a fast precipitation rate and good precipitation effect. The preparation method comprises the following steps: ball milling the aluminum oxide and the calcium oxide, adding non-ionic polyoxyethylene amide and non-ionic polyacrylamide, stirring, and adding ethylene glycol drop by drop in the stirring process to prepare the calcium-aluminum composite emulsion. The effective calcium content, the permeability and the precipitation performance of the calcium-aluminum composite emulsion are improved by using the aluminum oxide and the subsequent ball milling treatment, so that the calcium-aluminum composite emulsion can quickly and effectively precipitate phosphorus and fluorine pollutants in phosphorus-fluorine wastewater and phosphogypsum, the treated phosphogypsum meets the first-class solid waste, and the treated phosphorus-fluorine wastewater also meets the national standard. The application solves the technical problem that traditional lime reagents cannot simultaneously and efficiently remove phosphorus and fluorine due to low effective calcium content and poor permeability.

The invention relates to the field of dairy product processing, in particular to liquid milk with bone strengthening and muscle building functions and a preparation method of the liquid milk. The preparation method of the liquid milk provided by the invention comprises the following steps: 1) performing degreasing treatment on raw milk to obtain skim milk and single cream; 2) performing first membrane filtration treatment on the skimmed milk obtained in the step 1) to obtain first trapped fluid and first penetrating fluid; (3) carrying out secondary membrane filtration treatment on the first penetrating fluid obtained in the step (2) to obtain second trapped fluid and second penetrating fluid; (4) uniformly mixing the first trapped fluid obtained in the step (2) with the second trapped fluid obtained in the step (3) and the single cream obtained in the step (1) to obtain a standardized solution; and (5) uniformly mixing the standardized solution obtained in the step (4) with functional raw materials, homogenizing, sterilizing and filling to obtain the liquid milk. The liquid milk prepared by the preparation method of the liquid milk provided by the invention is normal-temperature milk rich in bone-strengthening and muscle-building functional components and has relatively high calcium content and calcium-sodium ratio, and the nutritional value and functional characteristics of the product are remarkably improved.

The invention discloses a high-calcium salmon sausage rich in active polypeptides and a preparation method thereof, and the preparation method comprises the following steps: taking salmon fishbone zymolyte, salmon meat, chicken, starch and seasonings as raw materials, chopping and uniformly mixing, filling, cooking, sterilizing and cooling to complete the preparation of the high-calcium salmon sausage rich in active polypeptides. According to the preparation method of the high-calcium salmon sausage rich in the active polypeptide, salmon processing by-products are fully developed and utilized in a high-valued mode, waste of salmon bone resources is avoided, meanwhile, the salmon bone zymolyte is added into production raw materials of the salmon sausage, the calcium content of the salmon sausage is increased, the content of the salmon bone zymolyte is increased, and the content of the salmon bone zymolyte is increased. Moreover, bioactive substances such as polypeptide with antioxidant activity are supplemented, the health-care function and nutritional value of the salmon sausage are enhanced, and the requirements of people on convenience, high nutrition, functionality and healthy diet diversification of instant food are met.