401 results about "Chelated calcium" patented technology

Disclosed are methods relating to an extruded pregelatinized, partially hydrolyzed starch prepared by mixing at least water, non-pregelatinized starch, and acid to form a starch precursor. The acid can be a weak acid that substantially avoids chelating calcium ions or a strong acid in a small amount. In the method, pregelatinization and acid-modification of the starch precursor occurs in one step in an extruder. Also disclosed are methods of preparing board using the starch prepared according to the methods, as well as starches and boards prepared by various methods of the invention.

The invention relates to a processing method of sea cucumber glycopeptides chelated calcium. The method comprises the following steps: A. material treatment: cleaning sea cucumber mouthparts, cooking, soaking, beating, and homogenizing; B. biological enzymatic hydrolysis: choosing a variety of protease for composite segmented enzymatic hydrolysis; C. centrifugal separation: conducting continuous centrifugal separation on an enzymolysis liquid to obtain the sea cucumber glycopeptides solution and sea cucumber calcium precipitate; D. filtration, concentration and grading: subjecting the enzyme liquid to ultrafiltration fractionation concentration, and desalinating small peptide filtered solution by nanofiltration; E. preparation of sea cucumber calcium by organic acidolysis; G. chelating reaction: promoting the chelating of sea cucumber calcium and glycopeptides of sea cucumber by microwave assistance; and H. after the reaction, carrying out centrifuging separation, and drying the precipitate and supernatant respectively. The present invention comprehensively utilizes the sea cucumber processing waste to prepare sea cucumber autologous calcium and autologous glycopeptides for chelation. The method on the one hand is beneficial to playing their biological effects, and on the other hand can also obtain five products with different specific biological functions.

The invention provides a preparation method of protein short peptide chelated calcium. The method includes the steps of: refinement treatment and sterilization of mixed raw material containing protein and water, a first hydrolysis by adding proteolytic enzyme, ultrafiltration of the liquid portion separated after the first hydrolysis using a ultrafilter membrane whose retention molecular weight is in the range of 1000-6000 Da, mixing of the macro-molecule peptide liquid which does not permeate the ultrafilter membrane and the solid phase portion separated by the first hydrolysis, a second hydrolysis by adding proteolytic enzyme, purification of micromolecule oligopeptide liquid after twice hydrolysis ultrafiltrations, chelating by adding calcium hydrate or calcium chloride, complete reaction of quantitive sodium carbonate when the pH valve is neutral, filtering for removing deposition, desalination by the nanofiltration membrane, sterilization, condensation and obtaining of the protein short peptide chelated calcium product. The preparation method can substantially improve the protein short peptide obtaining rate and the raw material protein utilization rate, and reduce production cost, so the obtained protein short peptide chelated calcium product has a good quality and high production safety.

This invention relates to a chelated calcium fertilizer, which is prepared from: catalyst 1-2 wt. %, inorganic calcium raw material 58-69 wt. %, and chelating agent 30-40 wt. %. The chelating agent is composed of: oxalic acid 5-10 wt.%, malic acid 8-20 wt.%, citric acid 15-25 wt.%, maleic acid 10-25 wt.%, sorbitol 3-8 wt.%, gallic acid 8-10 wt.%, and lactic acid 2-8 wt.%. The catalyst is composed of: gadolinium chloride 0.1-0.35 wt.%, selenium dioxide 0.1-0.2 wt.%, chalcanthite 0.05-0.1 wt.%, KOH 0.05-0.1 wt.%, potash 0.1-0.2 wt.%, and palladium carbonate 0.05-0.2 wt.%. The chelating agent has appropriate stability and low cost, and can chelate with calcium in solid state. Besides, the chelating agent cannot be deactivated in plants by hydrolysis or reacting with phosphate, sulfate and oxalic acid. This invention also relates to a method for preparing the chelated calcium fertilizer, which specifies the production process, process parameters, and chelating agent and high-efficiency catalyst needed.

The invention relates to liquid chelated calcium as well as a preparation method and use thereof and belongs to the chemical fertilizer filed in agricultural science and farming techniques. The invention provides the liquid chelated calcium and the preparation method thereof. Active ingredients of the liquid chelated calcium disclosed by the invention are prepared by chelating 45-70 parts by weight of calcium nitrate and 10-25 parts by weight of polyhydroxy compounds in water, wherein the polyhydroxy compounds are ethylene glycol, glycerol, mannitol, xylitol, sorbitol or glucose. The liquid chelated calcium disclosed by the invention is high in calcium content which is greater than 120 g / L, safe and non-toxic, free from harmful effect on crops, can be mixed with other pesticides, weakly-acidic and neutral fertilizers for use, good in water solubility for being conveniently mixed with water for using and metering, good in stability, and can be stored by resisting a low temperature; besides, the liquid chelated calcium is produced by adopting a chelating process, so that crops can be absorbed better and quicker.

The invention discloses a method for preparing crocodile ossein chelated calcium. The method includes the following process steps: (1) materials are obtained; (2) freezing is carried out; (3) normal-temperature processing is carried out; (4) stewing is carried out; (5) microwave processing is carried out; (6) smashing is carried out; (7) superfine grinding is carried out; (8) first-time enzymolysis is carried out; (9) second-time compounded enzymolysis is carried out; (10) the materials obtained after two times of enzymolysis are placed into a centrifugal machine for separation; (11) concentration and spraying drying are carried out to obtain ossein protein peptide powder; (12) separated bone powder is taken out for acidolysis for extracting calcium powder; (13) centrifugation is carried out to obtain bone calcium powder; (14) water bath chelation is carried out; and (15) powdered crocodile ossein chelated calcium is obtained. The crocodile ossein chelated calcium is high in quality and can be widely applied to the fields of medicines, foods, health care and the like.

The invention relates to pear pollination solution, which comprises pollen transferred for pear trees. The pear pollination solution is characterized in that pear pollen is suspended in mixed liquor, the mixed liquor is composed of accelerator, colorant, spreader and water, the accelerator can be composed of cane sugar, boric acid, chelate calcium and urea, or composed of cane sugar, borax, chelate calcium and urea, the colorant is food colorant, the spreader is tween-20, and the mixed liquor comprises, in weight percentage, 6% of white sugar, 0.002% of the boric acid or borax, 0.003% of the chelate calcium, 0.005% of the urea, 0.001% of the food colorant, 0.01% of the tween-20, and the balance of the water.

The invention provides a seaweed water-soluble fertilizer and an application method thereof. The seaweed water-soluble fertilizer comprises the following components in parts by mass: 10-25 parts of seaweed extract, 0-100 parts of urea, 10-50 parts of ammonium dihydrogen phosphate, 10-140 parts of potassium nitrate, 1-80 parts of chelated calcium, 1-30 parts of chelated magnesium, 1-2 parts of chelated iron, 1-2 parts of chelated copper, 1-2 parts of chelated zinc, 1-2 parts of chelated manganese, 1-2 parts of polymerized boric acid and 0.5-3 parts of silicon dioxide. According to the seaweed water-soluble fertilizer, the seaweed extract and high-end water-soluble fertilizer raw materials are combined tightly, the multielement novel seaweed water-soluble fertilizer for soil improvement and soil fertility balance is developed, the formula can be adjusted correspondingly according to different growth periods of crops, a novel fertilizer application choice is provided for commercial crops such as vegetables (tomatoes, cucumbers and hot peppers) and fruits (apples, bananas and grapes) is provided, and the quality and yield of the commercial crops such vegetables and fruits can be improved obviously.

The invention discloses complex chelated fish skin bone protein polypeptide calcium powder, belonging to the field of food processing methods. A preparation method of the complex chelated fish skin bone protein polypeptide calcium powder mainly comprises the steps: respectively digesting and pulping fish bones and fish skins, then mixing the obtained fish bone paste and fish skin pulp to obtain fish skin and bone paste; then adding water and compound protease for conducting enzymatic hydrolysis, and centrifuging the enzymatic hydrolysate to respectively obtain supernate and precipitate; and conducting airflow grinding on the precipitate to obtain ultramicro fish bone powder, conducting acidifying processing on the ultramicro fish bone powder in a lactic acid solution, then mixing fish bone calcium liquid with the supernate in a bioreactor, and conducting a chelating reaction to obtain the complex chelated fish skin bone protein polypeptide calcium powder. The complex chelated fish skin bone protein polypeptide calcium powder has a better antioxidant function; secondarily, the chelated calcium powder is good in solubility, and the biological calcium absorption rate is high; the chelated calcium powder provides collagen protein polypeptide which has the effects of enhancing the metabolism of cortical cells and preventing aging. The preparation method is simple and low in cost.

The invention provides a preparation method of collagen polypeptide chelated calcium. The preparation method comprises the following steps of: performing enzymolysis on animal skin gelatin by a two-step enzymolysis method to prepare micromolecule collagen polypeptide abundant in oxyproline; and performing chelation reaction on the micromolecule collagen polypeptide and food-grade soluble ionized calcium to prepare the collagen polypeptide chelated calcium. The process for preparing the collagen polypeptide chelated calcium is simple; the chelation rate reaches 77 milligrams of ionized calciumper gram of collagen polypeptide; the prepared collagen polypeptide chelated calcium has high water solubility, is absorbed by a human body easily, supplements the calcium element required by the human body, also supplements the oxyproline for promoting calcium absorption, and is a good calcium supplement product.

The invention provides an amino acid-containing water soluble fertilizer added with sugar alcohol and a preparation method thereof. The amino acid-containing water-soluble fertilizer added with sugar alcohol is prepared from the following raw materials: amino acid, calcium salt and water as well as 5-10wt% of sugar alcohol. The amino acid-containing water-soluble fertilizer is of a calcium element type, the sugar alcohol is added to be used as a chelating agent of the calcium element; by virtue of reasonable ratio of sugar alcohol to amino acid to calcium salt, the sugar alcohol and the calcium element are chelated to form a stable micromolecule chelate; since sugar alcohol has permeation and wetting properties, absorption and transportation efficiency of the chelated calcium element is improved; meanwhile, amino acid can promote calcium absorption and also can promote photosynthesis, so that chlorophyll content is increased. Therefore, under the combined action of sugar alcohol and amino acid, the amino acid-containing water-soluble fertilizer added with sugar alcohol has high utilization rate, can improve the conveying speed of plant nutrients, can enhance calcium absorption of plants and can increase sugar content of the plants.

A method for continuously producing scale collagen peptide chelated calcium salt and scale collagen peptide belongs to the biological technical field. The method comprises the following steps: (1) pretreating scales; (2) extracting scale collagen polypeptide and calcium solution through the enzyme method; (3) purifying the solution; (4) implementing enzymolysis for the solution; (5) preparing scale collagen peptide chelated calcium salt solution through the peptide calcium chelating technology; (6) separating the solution of the step (5) to obtain precipitate and supernate; (7) dissolving the precipitate in water and drying to obtain a scale collagen peptide chelated calcium salt finished product; (8) concentrating the supernate to remove ethanol, and separating and purifying to obtain scale collagen peptide solution; and (9) drying the solution to obtain a scale collagen peptide powder finished product. The scale collagen peptide chelated calcium salt product, produced by the method, has high biological utilization rate and high safety, and replenishes both peptide and calcium; and the produced scale collagen peptide product has low molecular weight and high purity. The method fully uses the aquatic product leftover scales, and turns the wastes into the wealth, so that the resource utilization rate can be improved, and the environmental friendliness cost can be reduced.

The present invention discloses a method of using catering waste shrimp shells for continuous production of compound amino acid oligopeptide chelated calcium and chitin. The method comprises: (1) pre-treating the catering waste shrimp shells; (2) acquiring oligopeptide and free amino acid from the shrimp shells by a biology enzymic method; (3) treating the shrimp shells with 2% to 3% of a hydrochloric aqueous solution to obtain free Ca<2+>; (4) chelating the amino acid oligopeptide, free amino acid and free Ca<2+> obtained in process (2) and (3) to prepare the amino acid oligopeptide chelated calcium; (5) recovering the treated shrimp shells. The present method is characterized by wide source of raw materials, high product safety, environment-friendly process and simple production process. Compared with other production methods, materials in the present method basically come from the shrimp shells and the use of additional materials is prevented, so that the cost is low and the waste shrimp shells which cause environmental pollution is changed into high-value products. The method fully realizes the purpose of changing waste into valuables, purifying environment and reducing production cost.

The invention discloses a method for preparing calcium citrate with oyster shells and fan shells, comprising the following steps: selecting biological calcium sources, oyster shells and fan shells, for fully ashing, using the ash content as raw material, dissolving the raw material with hydrochloric acid having a certain concentration, letting the dissolved raw material react with sodium citrate under water phase conditions at the temperature of 70-100 DEG C to prepare citric acid chelated calcium. The weight ratio of the ash content to calcium citrate, reaction time and reaction temperature are three influencing factors. By optimizing the reaction conditions, a method which has optimal chelating effect and is economical and practical is obtained.

The invention discloses a method for preparing amino acid chelated calcium by utilizing egg shells, comprising the following steps: washing egg shells; micronizing; adding the micronized egg shells into organic acid solution; stirring and filtering under the environment of room temperature; adding sodium hydroxide into supernatant fluid and adjusting the pH value to 3-6; adding amino acid according to coordination ratio; standing still and centrifugating after constant temperature; and washing and precipitating for a plurality of times by using solvent and drying to obtain the finished product. The method for preparing amino acid chelated calcium by utilizing egg shells adopts the coordination method, and has simple technology and mild reaction conditions; the obtained product has the advantages of good physical and chemical stability, high biological value and the like; and the method can be used for reinforcer of foods such as milk powders, flour, beverage and the like.

The invention relates to a preparation method for a blood cell protein peptide chelated calcium microcapsule preparation. The preparation method comprises the specific steps that pig blood cells and deionized water are prepared into hemolytic blood, then protease is added to the hemolytic blood, enzyme deactivation and filter pressing are carried out after hydrolysis, and the mixture carries out a chelation reaction with soluble calcium salt after the pH is adjusted; then a proper wall material solution is adopted for embedding the protein peptide chelated calcium solution, and blood cell protein peptide chelated calcium microcapsules are obtained through spray drying after embedding. The prepared blood cell protein peptide chelated calcium microcapsules are high in chelation rate and embedding rate, the solubility of calcium salt in the gastrointestinal tract environment can be improved, and the slow release effect can be achieved. In addition, after calcium salt is released, the absorption rate of calcium is increased through the form of small peptide chelated calcium, the preparation process is safe and free of pollution, absorption of mineral element calcium is promoted while essential amino-acid for the human body is supplemented, and the blood cell protein peptide chelated calcium microcapsule preparation is a good nutrient supplement product.

The invention discloses an extraction method of collagen polypeptide and active calcium in walleye pollock bone. The method comprises the following steps: (I) pretreating the raw material; (II) preparing bone collagen polypeptide through the substeps of (1) soaking fish bone in a NaOH solution and then carrying out high-temperature and high-pressure treatment, (2) extracting the bone collagen, (3) carrying out treatment via a high-voltage pulsed electric field, and (4) carrying out enzymolysis by firstly adding composite collagen protease for enzymolysis, then adding flavor protease for enzymolysis, decolorizing and deordorizing, carrying out spray drying to obtain the collagen polypeptide; and (III) preparing active calcium in fish bone through the substeps of (1) extracting tartaric acid, (2) extracting tartaric acid again, and (3) combining the extracted tartaric acids to prepare the active calcium in the fish bone. Through the extraction method, the disadvantages of thick fishy smell, bitter taste and unfavorable peculiar smells of the marine source collagen polypeptide can be overcome; the collagen polypeptide of the walleye pollock bone which is free of pungent smell, delicious and moderate in taste can be prepared; meanwhile, the bone dreg can be economically and efficiently used for preparing active tartaric acid chelated calcium; the utilization rate of the walleye pollock bone is increased; the high-value utilization is achieved.

The invention relates to a method for preparing a pig bone collagen polypeptide chelated calcium supplement. The method comprises the following steps of: 1, preparing pig bone paste, namely crushing, defatting and grinding fresh pig bones to obtain the pig bone paste; 2, preparing bone collagen polypeptide, namely preparing a pig bone paste culture solution, inoculating mixed strains of serratia marcescens and lactobacillus bulgaricus, fermenting, centrifuging, filtering and drying to obtain the bone collagen polypeptide; 3, preparing soluble bone calcium by mixing bone paste residue left after fermentation and hydrochloric acid; and 4, preparing the bone collagen polypeptide chelated calcium supplement, namely chelating the bone collagen polypeptide and the soluble bone calcium to obtainthe bone collagen polypeptide chelated calcium supplement. By the method, the added value of a pig bone resource is improved, the collagen and bone calcium in the pig bones are comprehensively developed and utilized, and the prepared chelated calcium supplement has high solubility in water, is favorable for a human body to absorb and utilize calcium element in the chelate, and can be applied to various fields such as chemical engineering, foods, cosmetics and the like.

The invention relates to a degradation agent of the pesticide residue of Chinese herbal medicine and a production method thereof, which utilizes mirco-nano biological coating technology, enzyme active substance control and a stabilization system of active plant cell film and assists with an intelligent slow / controlled release adjuvant, thus promoting crop output and quality, degrading hazardous substances of the pesticide residue and enhancing products to achieve the international standards. The invention contains the components of oligosaccharide, selenic acid lipopolysaccharide, plant humic acid, rare earth, pectin, phytoalexin, organic matters, abscisic acid, vanillic aldehyde, amino acid, boracic acid, zinc sulfate, nicotinamide, sodiumnitro phenolate, phytic acid, ferrous sulfate, lycine, gibberellinn and chelated calcium; process water is added in sequence according to the weight mixture ratio; the mirco-nano technology is adopted and a product is obtained through coating, enveloping, technique processing treatment of mirco-nano structure, dynamic dissolution, high-pressure spray homogenization, filtering, mixing and reaction.

The invention discloses a water-soluble carbon enzyme granule fertilizer and a preparation method thereof. The water-soluble carbon enzyme granule fertilizer is prepared from, by weight, 5-10 parts of medical stone, 3-10 parts of dolomite, 15-20 parts of nitrogenous fertilizer, 10-20 parts of phosphatic fertilizer, 30-40 parts of potassic fertilizer, 4-25 parts of fulvic acid, 1-10 parts of concentrated molasses fermentation liquor, 0.1 part of carbon enzyme, 1 part of polyglutamic acid, 0.1 part of polyaspartic acid, 2 parts of chelated calcium, 0.5-1 part of chelated magnesium, 0.2-0.5 part of quick-acting boron, 0.2-0.5 part of chelated zinc and 0.3-0.5 part of chelated iron. The water-soluble carbon enzyme granule fertilizer is good in water solubility and high in organic matter content, and a granular structure can be easily formed; the chelated trace elements in the water-soluble carbon enzyme granule fertilizer can be easily absorbed by plants, improve fertilizer efficiency and have a powerful function and a lasting effect.

The invention provides a potato water-soluble fertilizer and an applying method thereof. The potato water-soluble fertilizer consists of the following components: 100-500 parts by weight of urea, 100-500 parts by weight of monopotassium phosphate, 100-600 parts by weight of potassium nitrate, 10-500 parts by weight of potassium sulphate, 1-10 parts by weight of polymerized boron, 1-5 parts by weight of molybdate, 1-10 parts by weight of chelated zinc, 1-10 parts by weight of chelated copper, 1-40 parts by weight of chelated calcium, 1-20 parts by weight of chelated magnesium, 1-10 parts by weight of chelated manganese, 1-10 parts by weight of potassium metasilicate, 1-10 parts by weight of potassium alginate, 1-5 parts by weight of chitosan oligosaccharide, and 1-3 parts by weight of silicon dioxide anticaking agent. The potato water-soluble fertilizer can greatly increase the chlorophyll content, the photosynthetic net assimilation rate and the root system activity of potato, increase the tuber number of each single plant, increase the weight of each tuber, increase the commodity potato rate, and increase the contents of starch, protein, and vitamin C.

The invention provides a chelated calcium fertilizer and a preparation method thereof. The chelated calcium fertilizer comprises the following raw materials: 30-45 parts of calcium nitrate, 10-15 parts of calcium chloride, 0-2 parts of citric acid, 1-4 parts of formic acid, 3-5 parts of amino acid, 0-2 parts of acetic acid, 2-7 parts of sorbitol, 1-3 parts of mannitol, 0-3 parts of xylitol, 1-3 parts of glycol and 3-6 parts of glycerin. The method comprises the following steps: (A) calcium nitrate and calcium chloride are dissolved with water and are uniformly mixed, then citric acid, formic acid, acetic acid and amino acid are sequentially added and stirred, and a chelated calcium pre-mixture is obtained; (B) sorbitol, mannitol, xylitol, glycol and glycerin are added into the chelated calcium pre-mixture, stirred and cooled, and liquid chelated calcium fertilizer is obtained; (C) the liquid chelated calcium fertilizer is granulated, dried, smashed and screened, and then the chelated calcium fertilizer is obtained. The chelated calcium fertilizer has the effects of high solubility, good hard-water resistance and good plant absorbing effect.

The invention discloses an efficient amino acid chelated leaf fertilizer containing trace elements, relating to the technical field of agricultural fertilizer production. The efficient amino acid chelated leaf fertilizer containing trace elements is prepared by proportioning the following components in parts by weight: 20-25 parts of urea, 0.4-1.0 part of amino acid chelated boron fertilizer, 1-2 parts of potassium sulfate, 0.5-0.8 part of amino acid chelated zinc fertilizer, 7-10 parts of monopotassium phosphate, 0.5-0.8 part of amino acid chelated manganese fertilizer, 0.1-0.2 part of surfactant, 0.1-0.3 part of amino acid chelated iron fertilizer, 0.01-0.04 part of plant growth substances, 1.2-2.0 parts of amino acid chelated calcium fertilizer and 62-65 parts of water. The efficient amino acid chelated leaf fertilizer containing trace elements, which is disclosed by the invention, has the characteristics that the fertilizer contains the trace elements extremely easy for crops to absorb, can enhance the abilities of the crops against diseases and on the like, and can be widely used for supplementing the trace elements for the crops like tobaccos, vegetables, melons, fruits, flowers, trees and the like when the crops are planted.

The invention discloses a production method of an organic and inorganic composite fertilizer containing amino acid trace element chelates, and the product belongs to the field of composite fertilizer. The organic and inorganic composite fertilizer is composed of urea, monoammonium phosphate, potassium sulphate, a dry mixture of pig manure and cow manure, a mixture of peanut straw and rape stalk, a mixture of cotton seed cake and rapeseed cake, a mixture of rice husk and wheat bran, dry pollution-free river mud, plant ash, distillers' grain, biogas residue, an organic fertilizer leavening agent, a sterilizing and deodorizing agent, amino acid chelated calcium, amino acid chelated copper, amino acid chelated iron, amino acid chelated manganese, amino acid chelated zinc, and ammonium molybdate; the preparation method of the composite fertilizer comprises the following steps: preparing the raw materials mentioned above, and then subjecting the raw materials to processes of grinding, fermenting, mixing, granulating, and drying so as to obtain the composite fertilizer. The method has the advantages of simple technology, universal equipment, and high quality product. The product contains a large amount of inorganic substances, organic substances and trace elements, has comprehensive nutritional components and a long fertilizing effect, and can achieve the complementary advantages of organic substances and inorganic substances.

The invention provides water soluble fertilizer capable of improving grape sweetness and an applying method. The water soluble fertilizer is composed of, by mass, 10-50 parts of urea, 10-300 parts of monopotassium phosphate, 10-700 parts of potassium nitrate, 1-10 parts of calcium chelate, 1-10 parts of magnesium chelate, 1-5 parts of manganese chelate,1-7 parts of zinc chelate, 1-10 parts of polyborate, 1-2 parts of sodium molybdate, 1-3 parts of chitosan oligosaccharide, 1-10 parts of potassium alginate, 1-5 parts of brown algae polysaccharides and 1-3 parts of gaseous phase silica anticaking agents. The water soluble fertilizer can substantially increase the sugar content of grapes, improve grape sweetness, increase the sugar-acid ratio and increase nutritive value and commodity value of the table grapes.

The invention discloses an amino acid chelated fertilizer, which consists of the following components in percentage by weight: 30-40 percent of shell powder, 20-25 percent of vermiculite powder, 15-20 percent of grass peat, 0.8-1.2 percent of abamectin, 0.1-0.2 percent of gibberellin, 0.9-1.1 percent of potassium polyacrylate, 1-1.5 percent of ferrous sulfate, 2.5-5 percent of ammonium bicarbonate, 2-4 percent of calcium superphosphate, 1-2 percent of magnesium sulfate, 2-5 percent of calcium nitrate, 1.5-2 percent of ammonium molybdate, 2-3 percent of amino acid chelated calcium, 23 percent of amino acid chelated copper, 2-3 percent of amino acid chelated magnesium and 2-3 percent of amino acid chelated zinc. A preparation process of the chelated fertilizer is simple and practicable, thesoil structure can be improved greatly, high and stable yield of crops is realized, seedlings are even and strong, and the effects of preventing diseases, promoting growth, and the like are achieved.

The invention discloses a production method of fish collagen peptide chelated calcium. The production method comprises the following steps: carrying out pretreatment and proteolysis on fish bone, fish skin or fish scale which serves as raw materials, then carrying out chelation reaction on the raw materials and calcium under the gradient acidic pH condition, centrifuging and carrying out nanofiltration to remove the non-chelated calcium under the alkaline condition to obtain the fish collagen peptide chelated calcium with high content of calcium. The production method of the fish collagen peptide chelated calcium is simple and convenient in extraction process and low in cost, and is applicable to industrial production; the prepared fish collagen peptide chelated calcium has a good function of promoting absorption of the calcium.

The invention discloses a process for co-production of collagen calcium and polypeptide in chondroitin sulfate production. The production process includes: conducting coarse crushing on shark cartilage to a massive size, performing soaking in an acid solution and then conducting filtering, subjecting the filtrate to calcification treatment and alcohol precipitation, conducting secondary washing with alcohol, and then carrying out spin-drying and drying to obtain collagen chelated calcium; subjecting the soaked cartilage to enzymolysis and filtration to obtain a chondroitin sulfate and collagen polypeptide aqueous solution and bone dreg, subjecting the aqueous solution to ultrafiltration separation to obtain a chondroitin sulfate concentrated solution, and performing alcohol precipitation to obtain chondroitin sulfate; and concentrating the ultrafiltrate, and then carrying out spray drying, thus obtaining collagen polypeptide. On the basis of co-production of chondroitin sulfate and collagen polypeptide, the invention also produces another high benefit product at the same time, i.e. collagen chelated calcium, makes full use of the resources in cartilage, performs high value utilization of bone calcium powder in treatment process, and improves the economic value.

The invention discloses a preparation method of composite amino acid chelated calcium. The method adopts scallop outer mantles and scallop shells which are leftovers of scallop processing as raw materials, fully utilizes the characteristics that the scallop outer mantles are high in crude protein content and the scallop shells are high in calcium carbonate content, and subjects the scallop outer mantles to cooking, degreasing, enzymolysis and chelation with calcium salt so as to obtain an organic calcium product rich in a plurality of amino acids. Not only the method fully utilizes the leftovers of scallop processing and reduces production cost, but also the prepared composite amino acid chelated calcium has high nutritional value and a delicious taste so as to bring great economic value.