1130 results about "Pectin" patented technology

The invention discloses a vitamin K2 composite micro-capsule system with stomach protection and intestine slow release functions and a preparation method and application thereof, the vitamin K2 composite micro-capsule system with stomach protection and intestine slow release functions comprises three layers, namely a core layer, a middle layer and an outer layer from inside to outside in sequence; the core layer is formed by coating vitamin K2 with a zein-lac hydrophobic core, the middle layer is a pea protein-pectin electrostatic compound, and the outer layer is sodium alginate and chitosan double-network gel. The micro-capsule system provided by the invention can be tightly combined in a gastric acid environment after being orally taken, the release of active ingredients in the stomach is reduced, and then the micro-capsule system stays at intestinal mucosa for a long time and slowly releases contents, so that the functions of the micro-capsule system are slowly presented outside, the half-life period is prolonged, and the action effect is improved. Vitamin K2 directly or indirectly participates in and regulates various physiological processes related to health, and plays an important role in the aspects of maintaining bone health, preventing cardiovascular diseases, protecting nerves, improving metabolism and the like.

The invention relates to the technical field of microorganisms and bio-organic fertilizers, and particularly discloses a bio-organic fertilizer for preventing and treating rhizome diseases of horseradish and application of the bio-organic fertilizer, the bio-organic fertilizer comprises the following components: component A: a bacillus velezensis microbial inoculum with the preservation number of CCTCC NO: M 2022923 and a trichoderma yunnanense microbial inoculum with the preservation number of CCTCC NO: M 2025645; the component B is prepared from soybean meal, vinegar residues, charcoal, wollastonite powder and allicin. The biological organic fertilizer disclosed by the invention can be used for increasing the content of growth hormones such as salicylic acid (SA), jasmonic acid (JA) and ethylene (ET) and phytoalexin as well as the activity of chitinase and beta-1, 3-glucanase of a wasabi root system, and has a relatively good prevention and treatment effect on a black heart disease caused by infection of phoma wabi Yokog and a soft rot disease caused by infection of pectobacterium carotovorum subsp. Carotovorum (Pcc). The biological organic fertilizer disclosed by the invention has a relatively good prevention and treatment effect on the soft rot disease caused by infection of the phoma wabi Yokog and a relatively good prevention and treatment effect on the soft rot disease caused by infection of the phoma wabi subsp. Carotovorum (Pcc).

The present invention provides a gel candy containing DHA and a preparation method thereof. The gel candy containing DHA of the present invention is made of the following raw materials: 1-10 parts of edible colloid, including one or more of pectin, gelatin, carrageenan, agar, starch, locust bean gum, and xanthan gum; 75-90 parts of sweetener; 5-15 parts of DHA microcapsule powder; 2-10 parts of moisture retainer; 0.5-5 parts of acidity regulator-buffer salt pair, including one or more of citric acid and its sodium salt or potassium salt, DL-malic acid and its sodium salt, lactic acid and its sodium salt. The present invention also provides a preparation method for the above-mentioned gel candy, adding DHA microcapsule powder and acidity regulator-buffer salt pair in the last stage before casting and molding and mixing evenly; it can be cast into a solid or sandwich product, and the moisture content of the obtained gel candy is 8-20%. The gel candy of the present invention has no fishy smell during the shelf life of 18 months, and the product does not return to sand or melt.

The invention relates to the technical field of production of organic chili oil bean halves, and discloses an organic chili oil bean halve production process which comprises the following steps: cooking and curing organic broad beans, cooling to make koji, and carrying out heat preservation fermentation to obtain sweet halves; mixing and pickling the organic fresh chilies with sodium chloride to obtain low-salt chilli embryos; mixing the sweet petals with the low-salt chili embryos, and adding an emulsifying active medium to obtain soy sauce mash; performing staged temperature-controlled fermentation and normal-temperature solarization curing on the soy sauce mash; and grinding and sterilizing the fermented and cured material to obtain a finished product of the organic chili oil bean halves. The preparation method comprises the following steps: pre-dispersing rapeseed oil into fine liquid drops by using active yellow mustard micro powder; the calcium carbonate buffering agent releases calcium ions in response to the acidity change of the system, pectin in chili is induced to be subjected to a cross-linking reaction, a three-dimensional gel network is constructed in soy sauce mash, dispersed oil drops are physically embedded, the oil drop merging and migration resistance is increased, and the oil separation rate of the product in the storage process is reduced.

The invention belongs to the technical field of food processing, and particularly relates to a curcumin-loaded protein-polysaccharide nanoparticle delivery system, a preparation method thereof and application of the curcumin-loaded protein-polysaccharide nanoparticle delivery system in neuroprotection. The preparation method comprises the following steps: mixing and dissolving sodium caseinate with one of glucan and pectin, hydrating at 0-4 DEG C for 12-24 hours, and performing ultrasonic and microwave treatment to obtain a pretreatment solution; adjusting the pH value, and heating the pretreatment solution to obtain covalent grafted particles; the protein-polysaccharide covalent grafted particles obtained in the second step are encapsulated with curcumin through a pH shift method, and the protein-polysaccharide-curcumin nanoparticles are obtained. The invention provides a method for carrying out Maillard reaction on sodium caseinate-polysaccharide under the assistance of ultrasound and microwaves, reaction parameters are optimized, and a preparation method of an efficient and stable curcumin delivery system and application of the curcumin delivery system in neuroprotection are constructed.

The invention relates to the technical field of feed formulas, and particularly discloses a natural mixed feed additive and a preparation method thereof. The natural mixed feed additive comprises the following raw materials in parts by mass: 4-7 parts of vitamin E, 5-15 parts of beta-carotene, 10-16 parts of soybean oil, 20-35 parts of deionized water, 5-8 parts of modified probiotic microcapsules and 1-5 parts of an emulsifier, wherein the modified probiotic microcapsules contain sodium alginate-pectin composite microencapsulated probiotics; the preparation method comprises the following steps: heating 10-16 parts of soybean oil to 35-45 DEG C, then adding 4-7 parts of vitamin E and 5-15 parts of beta-carotene, and stirring; adding 1-5 parts of an emulsifier into 20-35 parts of deionized water, heating to 45-55 DEG C, stirring, and then slowly adding into the mixed solution obtained in the step S1; 5-8 parts of modified probiotic microcapsules are added, and stirring is conducted for 8-12 min under the condition of 100-200 r / min. The natural mixed feed additive disclosed by the invention has the advantage that the defect that the feed additive still has defects in the aspect of reducing intestinal diseases of animals can be overcome.

The invention relates to the technical field of biological medicine, and discloses a formula of compound probiotic enzyme powder for promoting gastrointestinal microecological balance and nutrient absorption, by constructing a cross feeding system of bifidobacteria, lactobacillus and butyric acid bacteria and combining a stomach-intestine stage enzyme activity gradient adaptation strategy and a microenvironment response type double-layer embedding technology, the gastrointestinal microecological balance and nutrient absorption can be promoted, and the gastrointestinal microecological balance and nutrient absorption can be promoted. And cross-scale synergy of flora metabolism, substrate conversion and targeted release is realized. Wherein the sodium alginate-pectin composite embedding structure forms a pH buffer micro-area in a gastric acid environment, and proton pump gene expression of the acid-resistant strain is synchronously triggered; the prebiotics compounding and step-by-step enzymolysis process breaks through a closed-loop path of fiber degradation-flora proliferation-short-chain fatty acid generation. Compared with a traditional single-strain intervention scheme, the method has the advantages that double limitations of flora function splitting and process isolation are broken through, and systematic technical advantages are formed in the aspects of improving flora colonization stability, enhancing metabolite conversion efficiency and inhibiting pathogenic bacterium colonization.

The invention provides an airflow drying and surface modification technology for lemon fibers, relates to the technical field of lemon surface processing, and realizes the whole process optimization of lemon fiber production through ultrasonic-microwave synergistic extraction, pulse type ultrasonic-hot air coupling airflow drying, low-temperature plasma surface modification and an intelligent control system based on Q-learning. The pectin yield is increased by about 20% through ultrasonic-microwave synergistic extraction, the extraction time is shortened by 50%, flow drying is assisted by double-frequency ultrasonic waves and magnetized water mist, the drying time is shortened by 50%, the energy consumption is reduced by 20%, the fiber softness is improved by 15%, the fiber is endowed with 99% antibacterial rate and excellent hydrophilicity through low-temperature plasma modification, chemical reagents are not needed, and environmental pollution is reduced. The intelligent control system converts waste liquid into ethanol and lactic acid through real-time data optimization and closed-loop resource utilization, zero waste discharge is achieved, the ethanol yield is increased by 12%, the additional value of lemon peel byproducts is remarkably increased, and the method is suitable for the fields of food and materials and conforms to the green chemistry concept.

The utility model relates to the technical field of food processing, in particular to a brush petal turning machine which comprises a conveying square frame, a first brush roller arranged right above one side close to the middle position of the top end face of the conveying square frame, and a second brush roller arranged on the other side close to the middle position of the top end face of the conveying square frame. According to the utility model, through the arrangement of the cleaning square frame, the suction pipe, the suction cover and the cleaning comb teeth, the hairbrush section turning machine can be convenient to turn food which needs to be made into dried food into sections in a multi-stage manner, so that the food which needs to be made into the dried food can be conveniently turned into sections, and the section turning efficiency is greatly improved. By means of the structure, pulp or pectin and other residues attached to the brush can be rapidly cleaned away and sucked out through the suction cleaning structure, it is ensured that the equipment can complete cleaning operation on the brush in time, and under the condition that the attached residues are rapidly cleaned away in time, the problems that a brush roller is prone to mildewing in the later period, and food processing sanitation is affected can be solved.

The invention relates to the technical field of food packaging, and discloses a composite preservative film as well as a preparation method and application thereof. The composite preservative film comprises a pectin film layer and a chitosan film layer which are arranged up and down, the pectin film layer contains an additive, the chitosan film layer contains lignin, and the additive is anthocyanin and / or an anthocyanin silver ion compound. The method comprises the following steps that S1, under the condition that a solvent exists, pectin and an additive are mixed I, then a pectin film layer is prepared through a tape casting method, and the additive is anthocyanin and / or an anthocyanin silver ion compound; in the presence of a solvent, chitosan and lignin are mixed II, and a chitosan film layer is prepared through a tape casting method; and S2, compounding the pectin film layer and the chitosan film layer to prepare the composite preservative film. The composite preservative film has antibacterial activity on various food spoilage bacteria and is high in oxidation resistance.

The invention belongs to the technical field of emulsion materials, and particularly relates to metal-polyphenol network modified coconut protein composite particles as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing a coconut protein-pectin compound by taking coconut protein and pectin as raw materials, adding a tannic acid solution into the coconut protein-pectin compound, mixing, adding a Fe < 3 + > solution, and mixing to obtain metal-polyphenol network modified coconut protein composite particles; according to the preparation method, tannic acid and the coconut protein-pectin compound are subjected to non-covalent interaction, Fe < 3 + > and phenolic hydroxyl groups on the tannic acid are subjected to coordination reaction, a metal-polyphenol network is formed through cross-linking of Fe-O coordination bonds, and a compact modification layer is constructed on the surface of the coconut protein-pectin compound, so that on one hand, waste coconut protein resources are utilized; on the other hand, the problem that composite particles prepared from pectin and coconut protein are prone to depolymerization is solved, the structural stability is improved, and meanwhile iron and polyphenol are supplemented.

The present invention discloses a pectin methylesterase mutant ΔDdPemA, its encoding gene, preparation method, and application. The pectin methylesterase mutant ΔDdPemA is obtained by mutating the amino acid at position 200 in the center of the substrate binding pocket of the wild-type pectin methylesterase DdPemA from a high-molecular-weight, branched valine to a low-molecular-weight alanine, and by mutating the amino acid at position 339 at the substrate inlet and outlet of the substrate binding pocket from a high-molecular-weight, branched valine to a basic lysine. The amino acid sequence and nucleotide sequence of the wild-type pectin methylesterase DdPemA are SEQ ID NO. 1 and SEQ ID NO. 2, respectively. The mutant enzyme provided by the present invention has significantly improved enzyme activity under weakly acidic conditions, solving the problem of insufficient catalytic activity of the wild-type pectin methylesterase under weakly acidic conditions and creating favorable conditions for the application of the enzyme in the fields of food, textiles, and feed processing.

The invention discloses hydrogel with a weight losing effect and a preparation method and application thereof, and relates to the technical field of hydrogel preparation, the hydrogel is prepared from polysaccharide gum, cellulose or derivatives thereof and fiber powder through physical crosslinking, a mixed solution of the polysaccharide gum, the cellulose or the derivatives thereof and the fiber powder is subjected to high-pressure homogenization treatment before physical crosslinking; the weight ratio of the polysaccharide gum to the cellulose or the derivative thereof to the fiber powder is 1: (100-300): (20-50); the polysaccharide gum is high-esterification-degree pectin, and the ratio of the weight-average molecular weight to the number-average molecular weight of the polysaccharide gum is 1.5-6; the fiber powder comprises apple fiber powder and oat fiber powder, and the weight ratio of the apple fiber powder to the oat fiber powder is 1: (1-5). The structural stability of the hydrogel can be improved, the hydrogel is prevented from being degraded or broken due to gastric juice and stomach extrusion, the emptying time of the hydrogel in the stomach is prolonged, and the problem that the duration of satiety of the hydrogel is short is solved.

The invention discloses a preparation method of an edible pectin film capable of monitoring and prolonging fruit freshness, which comprises the following steps: carrying out oxidation reaction on pectin and sodium periodate, then terminating the reaction and purifying to obtain oxidized pectin; the preparation method comprises the following steps: dissolving oxidized pectin in water, then adding histidine, and carrying out heating reaction at 60-120 DEG C for 1-3 hours to obtain a reaction product with pH-responsive fluorescence characteristics; adding a calcium chloride aqueous solution as a cross-linking agent into the reaction product, simultaneously adding glycerol as a plasticizer, stirring and mixing for 5-15 minutes at the temperature of 50-70 DEG C, and then stirring and mixing for 1.5-2.5 hours at the temperature of 20-30 DEG C to obtain a uniform film forming solution; pouring the film-forming liquid into a film, and drying to obtain an edible pectin film; the invention also provides the edible pectin film prepared by the preparation method. The prepared edible pectin film is mainly used for packaging fruits, and the freshness of the fruits can be visually displayed through fluorescence change while the fruits are kept fresh.

The invention relates to the technical field of food, in particular to a preparation method of calcium-containing soft sweets. The calcium-containing soft sweets comprise the following components: pectin, a sweetening agent and calcium salt microspheres. According to the preparation method disclosed by the invention, through innovative preparation of the calcium salt microspheres, the calcium salt is loaded in the water-soluble colloid and does not react with the pectin before casting molding, and meanwhile, the water-soluble colloid can effectively eliminate negative effects of the calcium salt on the taste and the texture of the soft sweets; in the stages of pouring and drying forming of the soft sweets, along with gradual dissolution of the water-soluble colloid, part of calcium salt is released and subjected to a moderate cross-linking effect with pectin, and the remaining calcium salt serves as a functional component and is reserved in the remaining microsphere structure, so that the calcium-containing soft sweets with good taste and stability are obtained.

The invention relates to pectin lyase as well as a mutant, a recombinant expression vector and application thereof. The nucleotide sequence of the pectin lyase is as shown in SEQ ID NO.1, the full length of the gene is 1056 bp, 352 amino acids are coded in total, and the amino acid sequence is as shown in SEQ ID NO.2; the pectin lyase mutant is formed by site-directed mutagenesis on the basis of an amino acid sequence of pectin lyase, a mutated nucleotide sequence is as shown in SEQ ID NO.3, and the amino acid sequence is as shown in SEQ ID NO.4; compared with the existing pectin lyase, the pectin lyase and the mutant thereof provided by the invention have the characteristics of high activity and temperature stability, and can be widely applied to fruit juice extraction, fruit juice clarification and fruit and vegetable juice beverage processing.

The invention relates to composition of urolithins comprising urolithins and pectin and formulations of urolithins, specifically chewable formulations, comprising urolithins and a gelling agent. The invention further comprises compositions and chewable formulations comprising urolithins in combination with other active ingredients and processes for the preparation of such compositions and formulations. The invention further comprises methods of using such compositions and formulations in the treatment of conditions and diseases and for the promotion of health and performance, such in the improving muscle function.

The invention relates to the technical field of crushing equipment, and discloses a lucid ganoderma crusher which comprises a base which serves as a basic component of the whole device and is used for assembling and bearing all treatment mechanisms and subordinate structural components of the treatment mechanisms. The treatment barrel is arranged in the middle of the top end of the base and is used for collecting and treating the lucid ganoderma. By adding and arranging the pretreatment mechanism, the mechanism pretreats the lucid ganoderma before crushing treatment by adopting high-temperature steam, on one hand, the high temperature of the steam can enable biological macromolecules such as microorganisms and nucleic acid on the surface and in the lucid ganoderma to be denatured, so that the biological macromolecules lose activity, the sterilization and disinfection effects are achieved, and the product quality and safety are improved; and on the other hand, the moisture and heat effect of the steam can soften and expand pectin, cellulose and other substances in cell walls and intercellular substances of the ganoderma lucidum, so that the texture of the ganoderma lucidum becomes softer, and the unnecessary material loss in the crushing process is reduced.

The invention relates to the technical field of functional food and biological medicine, in particular to a modified pseudo-ginseng exosome and an intestinal conditioning gel composition and application thereof. According to the gel beverage, an exosome derived from panax notoginseng callus cultured in a laboratory is used as a core active component, is modified through phosphatidylserine-aminated pectin-genipin and is embedded into a hydrogel matrix composed of carboxymethyl chitosan and sodium alginate, so that the exosome is protected from being degraded in the stomach, and the activity of the exosome in the stomach is improved. The exosome can be effectively released under the intestinal pH and flora environment, so that the targeted delivery of the intestinal tract is realized, and the preparation method is suitable for improving the intestinal inflammation and maintaining the intestinal health. The invention can effectively solve the technical problems of uncontrollable raw material quality and safety, low oral delivery stability and active ingredient availability and poor medication compliance of the existing plant exosome.

The invention discloses a method for producing a green packaging material by using field planting tobacco waste, which comprises the following steps: by taking tobacco stems as raw materials, extracting to obtain high-purity nicotine, extracting active chemical components to obtain tobacco stem residues, primarily treating the residual tobacco stems by an extruding and tearing machine to cut off and separate the tobacco stems into shreds, and drying the shreds to obtain the green packaging material. The cut tobacco stems enter a closed reaction bin, steam heating is adopted, ammonium sulfite or sodium sulfite and sodium hydroxide are added, EDTA and the ammonium sulfite or sodium sulfite and sodium hydroxide solution can dissolve fibrous adhesive lignin in the tobacco stems, and the tobacco stems can be used for producing green packaging materials after further mechanical treatment. Tobacco stem waste residues obtained after nicotine and pectic substance extraction are used as plant fiber paper pulp for producing the green packaging material, holocellulose in the tobacco stem residues is fully recycled and subjected to high-value resource utilization, the waste recycling value is increased, and the problem of waste environmental pollution is solved.

The invention belongs to the technical field of food packaging and fresh-keeping materials, and discloses an ethylene adsorption and pH / pectinase double-response intelligent antibacterial composite film as well as a preparation method and application thereof. The composite film comprises a base film and a functional carrier distributed in the base film, the functional carrier is a material ZIF-8-cinnamyl aldehyde-pectin capable of adsorbing ethylene and responding to pH and pectin, and the base film comprises a film-forming polymer and a natural antibacterial agent. According to the composite film, efficient adsorption of ethylene released in the storage period of fruits and vegetables is achieved through a porous structure of ZIF-8, meanwhile, a synergistic effect is formed by an acid environment naturally generated in the fruit and vegetable ripening and rotting process and pectinase, and intelligent slow release of cinnamyl aldehyde loaded on ZIF-8 is accurately triggered; cinnamyl aldehyde can form a double-channel intelligent antibacterial system with the natural antibacterial property of chitosan in a film base material and the metal ion antibacterial property of ZIF-8, maturation and aging of typical respiratory climacteric fruits and vegetables can be remarkably delayed, and the antibacterial film has extremely high industrial application potential.

The invention discloses a probiotic animal feed and a preparation method thereof, and belongs to the technical field of animal feeds, the probiotic animal feed comprises the following components by mass: 40-55 parts of caragana microphylla powder, 20-30 parts of fermented soybean meal, 3-5 parts of a composite probiotic preparation, 5-10 parts of a medicinal and edible additive, and 2-3 parts of a mineral premix. According to the composite probiotic preparation, bacillus licheniformis, pediococcus pentosaceus and saccharomyces cerevisiae boulardii synergistically improve the fiber decomposition efficiency, inhibit pathogenic bacteria and reduce ammonia nitrogen emission. The medicinal and edible additive is of a multi-layer micro-capsule structure, the outer layer is carboxymethyl chitosan and copper gluconate modified nano zeolite, active substances in the middle layer are rapidly released through rumen pH response, and the middle layer contains a yucca extract, a liquorice extract and other components and can inhibit urease activity and ammonia-producing bacteria; in the inner layer, a nano-selenium-vitamin E compound, curcumin and the like are slowly released through sodium alginate-pectin gel, so that intestinal metabolism is optimized. The process of pretreating caragana microphylla through steam explosion and performing solid-state fermentation on soybean meal through aspergillus oryzae is utilized, so that grain-free production is realized.

The invention discloses a ferrous glycinate and EDTA ferric sodium compound product and a preparation method thereof. The compound product comprises a core material and a double-layer wall material, the core material is prepared from ferrous glycinate and EDTA (Ethylene Diamine Tetraacetic Acid) ferric sodium; the inner-layer wall material is cyclodextrin and Arabic gum; the outer-layer wall material is pectin and hydroxypropyl methyl cellulose; in the compound product, the mass percentage content of the ferrous glycinate is 20%-25%; the mass percentage content of the EDTA ferric sodium is 8%-10%; the mass percentage content of the inner-layer wall material is 60%-70%; and the mass percentage of the outer layer wall material is 2-5%. The EDTA ferric sodium and the ferrous glycinate are compounded to serve as the core material, and the double-layer embedding wall material is adopted, so that the iron fishy smell of the ferrous glycinate can be effectively covered on the basis of relatively high iron absorption and utilization rate, and relatively good stability can be achieved when the iron-iron composite material is applied to a liquid preparation product.

The invention belongs to the technical field of gel. The invention provides high-strength starch sodium octenylsuccinate gel and a preparation method thereof.The preparation method comprises the steps that S1, corn and cassava starch are mixed according to the mass ratio of 1: (4.4-4.6) to obtain a mixture, and then the mixture and soft water are dispersed according to the mass ratio of 1: 1.1 to obtain starch milk; s2, adjusting the pH value of the starch milk to 9.0 by using a sodium hydroxide solution, then adding octenyl succinic anhydride at 25 DEG C, then adding sucrose ester and pectin, neutralizing the pH value to 4.5 by using an HC1 solution, and carrying out suction filtration, washing and crushing to obtain starch sodium octenyl succinate powder; and S3, gelatinizing the starch sodium octenylsuccinate powder, and storing the gelatinized starch sodium octenylsuccinate powder at low temperature to obtain the high-strength starch sodium octenylsuccinate gel. According to the invention, by reducing the ratio of corn starch to cassava starch, the viscosity of the prepared starch sodium octenylsuccinate is further improved while a lower gelatinization temperature is ensured.

The invention relates to the technical field of biology, in particular to application of glucoside hydrolase FsGH28c and a coding gene thereof in regulation of strain pathogenicity. The invention provides a glucoside hydrolase coding gene FsGH28c related to development, carbon source utilization and pathogenicity of fusarium solani, and after the FsGH28c gene is knocked out, the sporulation quantity is reduced, spore development is deformed, and the utilization rate of a carbon source (especially pectin) is reduced. In addition, the colonization amount of the FsGH28c gene deletion mutant in host pepper root fungi is reduced, and the pathogenicity is reduced. The FsGH28c gene can positively regulate the pathogenicity of fusarium solani, and can be used as an important candidate gene for research on the pathogenesis of fusarium solani.

According to the creatine-monohydrate pectin soft sweets and the preparation method, the low-amidation pectin is innovatively used in the field of the creatine-monohydrate pectin soft sweets through corresponding pretreatment, so that the problems caused by reaction and decomposition of an amphoteric compound, namely creatine monohydrate, in an original high-ester pectin system are solved; meanwhile, the problem that conventional low-amidation pectin cannot be gelatinized during pouring is solved, the low-amidation pectin and the creatine monohydrate are innovatively combined, and a gel system capable of containing a high-concentration creatine monohydrate compound is prepared. And meanwhile, by adopting a sugar-free formula technology, the requirement that sports people need to supplement creatine monohydrate but do not wish to intake sugar is met.

The invention discloses a preparation method of a metagen microcapsule. The metagen microcapsule is prepared from a wall material and a core material through electrostatic spinning, the core material comprises a metagen compound coating at least two layers of chitosan-casein / pectin compound nanoparticles; the wall material comprises polyvinyl alcohol and polycyclohexane; the mass ratio of the metagen compound to the polyvinyl alcohol to the polycycloethane is (4-7.5): (0-3): (0-7). The three materials of chitosan, casein and pectin have excellent affinity with human tissues and cells, the survival rate of probiotics can be remarkably increased, and accurate controlled release of active substances is achieved. By optimizing a coating process and adopting an electrostatic spinning technology, the probiotics coated with chitosan, casein and pectin nanoparticles are prepared into the probiotic composite fiber, so that the storage capacity and the release efficiency of the probiotics are effectively improved, and meanwhile, the stability and the consistency of the product quality are ensured.

The invention discloses application of ginseng pectin in prolonging life, and belongs to the technical field of biological medicine. Ginseng pectin and insulin interact with each other, so that the combination process of insulin and a receptor is inhibited, and the activity of an insulin / IGF-1 signal channel is reduced to achieve the effect of prolonging the service life. The low (demethyl) esterified HG structural domain in the ginseng pectin is a key structure for prolonging the life, and is beneficial to the development and application of the pectin in the fields of life-prolonging health care products and functional foods.

The application belongs to the technical field of food processing, and particularly relates to an oat protein-pectin-proanthocyanidin compound and a preparation method thereof. The oat protein is mixed with water, and an alkali liquor is added to adjust the pH to obtain a protein material solution for medium grinding. Then, pectin is added to the ground protein material solution, and proanthocyanidin powder is added after the pH is adjusted, and secondary medium grinding is performed to obtain an oat protein-pectin-proanthocyanidin solution. Then, hydrochloric acid is slowly added to adjust the pH to 6.8-7.0. Finally, the protein solution is centrifuged, and the supernatant is spray dried to obtain the oat protein-pectin-proanthocyanidin compound. The oat protein-pectin-proanthocyanidin compound prepared by the method is a brand-new protein system, and solves the problems of poor dispersibility, nutritional defects and poor emulsifying property of oat protein, and has a wide application prospect.

The invention discloses a preparation method of a konjac glucomannan-based coating film. The preparation method comprises the following steps: (1) preparing materials: 4 parts of konjac glucomannan, 3-4 parts of chitosan, 2-3 parts of high-ester pectin, 0.5-0.6 part of calcium carbonate and 0.8-1.1 parts of glycerol; (2) chitosan is dissolved in a 1% organic acid solution, then konjac glucomannan and high-ester pectin are added and stirred evenly to form a mixed solution, and the mass fraction of solute in the mixed solution is 2-3%; and (3) carrying out modification treatment on the mixed solution, then adding glycerol and calcium carbonate, and uniformly stirring to obtain the film coating solution. The coating film is not easy to dissolve, has excellent mechanical properties, and can keep fruits fresh by inhibiting ethylene synthesis, maintaining mango quality, delaying fruit ripening and maintaining fragrance release.