640 results about "Soybean Protein Isolate" patented technology

The invention provides an easy-to-swallow nutrition-enriched plant-based protein food and a preparation method thereof, the plant-based protein food comprises a mixed protein solution and edible oil, and the mixed protein solution comprises walnut protein, soybean protein isolate, alfalfa protein and egg white protein. The preparation method of the plant-based protein food comprises the following steps: preparing a high-protein emulsion from a mixed protein solution and edible oil and fat, preparing emulsion gel from the high-protein emulsion, and performing 3D printing by adopting the emulsion gel. According to the easy-to-swallow type nutrition-enriched plant-based protein food disclosed by the invention, four proteins are compounded, the nutritional value of the food is improved through the synergistic effect, the protein content is increased, amino acid compounding is realized, and meanwhile, the rheological property and extrusion property of 3D printing after protein compounding are improved, so that the printed food can be suitable for 3D printing and also can be used for 3D printing. The food can also be applied to old people with dysphagia, and meets the requirements of daily nutrition intake and easy swallowing.

The preparation method of the composite soybean protein gel comprises the following steps: adjusting the pH value of an egg white protein solution, carrying out heat preservation, adding protein glutaminase to carry out hydrolysis reaction, centrifuging, collecting supernate, and freeze-drying to obtain deamidated egg white protein; adding TG enzyme into the soybean protein isolate and deamidated egg white protein solution for enzymatic cross-linking reaction, centrifuging after enzyme deactivation, collecting supernate, and freeze-drying to obtain compound protein powder; dissolving the composite protein powder in water, stirring, and heating to form composite soybean protein gel; according to the preparation method disclosed by the invention, glutamine in the egg white protein is hydrolyzed by using the protein glutaminase, so that only the site of lysine is reserved, and then TG enzyme treatment is performed, so that the crosslinking of the egg white protein is avoided, and the content of disulfide bonds in the soybean protein is increased, thereby remarkably improving the gel strength and compression resistance of the composite soybean protein thermal gel.

The invention discloses a new energy battery insulation protection UV adhesive tape and a preparation method thereof, and belongs to the technical field of battery UV adhesive tape processing, and the preparation method comprises the following steps: mixing matrix resin, a modified polymeric monomer, a composite filler, tackifying resin, an ultraviolet delayed curing agent, a photobase generator, a photoinitiator, an antioxidant and a solvent, and stirring to obtain UV glue; coating the UV glue on the surface of the base material blue film, drying to obtain an adhesive layer, and adhering a release film on the surface of the adhesive layer to obtain the UV adhesive tape. The soybean protein isolate is complexed with iron, chromium, calcium, magnesium, sodium and other metal impurities in the montmorillonite to avoid falling; the UV adhesive tape comprises a photobase generator, a photoinitiator and an ultraviolet light delay curing agent which are cooperatively used, the UV glue is initiated to be preliminarily cured and then attached to the surface of the battery, the fixing effect is achieved within 1-2 h, and the problems that the curing speed of the UV adhesive tape is high, the curing of the UV adhesive tape on the battery is not uniform, the operable time is short, and the quality of the battery is affected are avoided.

The invention relates to the field of hygienic products, and particularly discloses a probiotic hygienic product and a preparation method thereof. The probiotic hygienic product comprises a probiotic non-woven fabric, the probiotic non-woven fabric contains fibers rich in probiotics, and a preparation method of the fibers rich in the probiotics comprises the following steps: dissolving soybean protein isolate and calcium chloride to obtain a receiving solution; performing coaxial electrostatic spraying on the shell layer solution and the core layer solution to obtain probiotic embedded particles; carrying out electrostatic spinning on polyethersulfone to obtain a polyethersulfone nanofiber membrane; adding the probiotic embedded particles into a pectin solution to obtain a spraying solution, and spraying the spraying solution on the polyether sulfone nanofiber membrane to obtain blended powder; and mixing the blended powder with PE resin and an auxiliary agent according to a mass ratio, extruding, granulating to obtain a shell material, and carrying out composite spinning on the shell material and PET slices. The probiotic hygienic product disclosed by the invention has the advantages of high survival rate of probiotics, good storage stability, high activity retention rate, high water-holding capacity and good antibacterial activity.

The invention discloses a clean label type crispness increasing method for small crispy meat, and belongs to the field of fried products. The preparation method comprises the following steps: firstly, efficiently preparing a lentinus edodes stem nanocellulose-soybean protein isolate compound by combining enzymolysis with a high-pressure homogenization method, preparing a gel-like emulsion with 50-70% of an oil phase by taking the lentinus edodes stem nanocellulose-soybean protein isolate compound as a dispersion phase, and then adding the gel-like emulsion as a pore-forming agent into paste, so as to develop a new way for increasing the crispness of the fried small crisp meat. The lentinus edodes stem nanocellulose-soybean protein isolate gel emulsion is applied to the small crispy meat, the crispness of the small crispy meat can be increased, the oil content and the oil oxidation degree of the small crispy meat can be reduced, the color and luster of the small crispy meat can be effectively regulated and controlled, and technical innovation and quality improvement in the field of fried foods are expected to be promoted.

The invention provides a soybean protein nanoparticle coagulant for removing perfluorinated compounds in water as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing N, N-dimethyl hexadecylamine and epoxy chloropropane into a reaction precursor, namely epoxy propyl hexadecyl dimethyl ammonium chloride; meanwhile, hydrolyzing the soybean protein isolate by using protease to obtain a hydrolyzed soybean protein solution; enabling the epoxy group on the epoxy propyl hexadecyl dimethyl ammonium chloride and the amino group on the hydrolyzed soybean protein to be subjected to ring-opening addition reaction so as to be grafted to the hydrolyzed soybean protein, and adding acetone to generate precipitate after the reaction is finished; and collecting the precipitate, washing and drying to obtain the soybean protein nanoparticle coagulant for removing the perfluorinated compounds in the water. The soybean protein nanoparticle coagulant prepared by the invention utilizes strong electrostatic interaction and hydrophobic interaction, the removal capacity and selectivity of the soybean protein nanoparticle coagulant on PFAS are far higher than those of a traditional coagulant, and the soybean protein nanoparticle coagulant has excellent removal efficiency and remarkable anti-interference capability.

The present application provides a soybean antihypertensive peptide and its screening method and application, which belongs to the field of polypeptides. The soybean antihypertensive peptide provided in the present application includes one or more of soybean antihypertensive peptide I with a molecular weight of less than 1000Da, soybean antihypertensive peptide II with a molecular weight of less than 1000Da, and soybean antihypertensive peptide III with a molecular weight of less than 1000Da; wherein, the soybean antihypertensive peptide I with a molecular weight of less than 1000Da is prepared by nattokinase enzymatic hydrolysis of soybean protein isolate, the soybean antihypertensive peptide III with a molecular weight of less than 1000Da is prepared by Bacillus subtilis liquid fermentation of soybean protein hydrolysate, and the soybean antihypertensive peptide III with a molecular weight of less than 1000Da is prepared by Bacillus subtilis solid fermentation of soybeans. The soybean antihypertensive peptide of the present application is a plant-derived antihypertensive peptide with high angiotensin converting enzyme inhibition rate and good antihypertensive effect. And it has been verified by animal experiments that the soybean antihypertensive peptide of the present application can significantly reduce the heart rate, diastolic blood pressure and systolic blood pressure of rats, and has less toxic and side effects.

The invention relates to the field of soybean protein isolate, and provides a soybean protein isolate extraction deep processing device which comprises a base, a smashing box and a conveying box, a fixing plate and an electromagnet are fixedly connected to the top wall of the smashing box, the fixing plate is connected with a transmission plate through a first spring piece, the transmission plate is slidably connected to the top wall of the smashing box, and a motor is fixedly connected to the transmission plate; a second gear is fixedly connected to a rotor of the motor, a first permanent magnet is inlaid in the transmission plate, a rotating rod is rotationally connected to the bottom wall of the box cavity, two or more smashing blades are fixedly connected to the rotating rod, a first gear is fixedly connected to the upper end of the rotating rod, a threaded rod is rotationally connected to the top wall of the base, and a third gear is fixedly connected to the upper end of the threaded rod. The side wall of the smashing box is slidably connected with a material conveying box, and a screening cavity and a threaded hole are formed in the material conveying box. According to the soybean smashing device, by means of driving of one motor, soybeans at the low position can be conveyed to the high feeding port through the material conveying box to enter the box cavity, and the smashing blades can be driven to smash the soybeans.

The invention provides a soybean amyloid protein fiber, a preparation method thereof, a high internal phase emulsion and application, and belongs to the technical field of protein fibers. The preparation method comprises the following steps: dissolving soybean protein isolate in water, adjusting the obtained soybean protein isolate solution to a first pH value, carrying out ultrasonic treatment and / or first stirring treatment, adjusting the obtained feed liquid to a second pH value, sequentially carrying out second stirring treatment, dialysis and freeze drying, and dissolving the obtained pretreated soybean protein isolate in water, adjusting the pH value of the pretreated soybean protein isolate solution to a third pH value, and sequentially performing hydration treatment and fiber growth treatment to obtain the soybean amyloid protein fiber. The invention provides a soybean amyloid protein fiber preparation method based on ultrasonic pretreatment and / or pH migration pretreatment. The yield and the emulsifying property of the obtained soybean amyloid protein fiber can be remarkably improved.

The invention belongs to the technical field of emulsion preparation, and particularly relates to cinnamon essential oil emulsion as well as a preparation method and application thereof. The cassia bark essential oil emulsion is prepared by jointly emulsifying cassia bark essential oil by utilizing a Chinese honeylocust fruit water extract and soybean protein isolate. The production process is simple, the production cost is low, large-scale production is facilitated, and the prepared cinnamon essential oil emulsion has good storage stability at the temperature of 4 DEG C and also shows excellent electrolyte, pH value, temperature and freeze-thaw stability. The method is suitable for the fields of food, packaging materials, medicines and the like, and the preservation capacity of the prepared cinnamon essential oil emulsion can be comparable with that of a commercial food preservative potassium sorbate.

The invention discloses a high-load curcumin water-soluble nanocrystal prepared by a microfluidic device and a method thereof, and relates to the technical field of nanocrystal processing, the microfluidic device comprises a molecule assembly section and a nanocrystal assembly section, the molecule assembly section comprises a feeding micro-channel and a molecule assembly channel, and the nanocrystal assembly section comprises a nanocrystal assembly channel. The nanocrystal assembling section comprises at least one nanocrystal assembling channel of a spiral backflow structure. The method comprises the following steps: S1, preparing a soybean protein isolate solution, a rhamnolipid solution and a curcumin solution; s2, respectively introducing the materials into a feeding micro-channel, firstly mixing the soybean protein isolate solution and the rhamnolipid solution, then enabling the mixture and the curcumin solution to enter a molecular assembly channel together, and mixing for molecular assembly; and S3, continuing to enter the nanocrystal assembly channel for nanocrystal assembly to obtain the nanocrystal. According to the invention, a microfluidic technology is combined with a pH driving method, so that highly accurate control on the size of the nanocrystal is successfully realized, and the encapsulation efficiency, the loading capacity and the water solubility of the nanocrystal are remarkably improved.

The invention discloses a special microbial fertilizer for cotton and a preparation method thereof, and belongs to the technical field of microbial fertilizers. The fertilizer is prepared from the following raw materials in parts by weight: 40-60 parts of a microbial agent, 80-100 parts of a microbial agent carrier, 40-60 parts of a nitrogen fertilizer, 30-50 parts of a phosphate fertilizer, 20-30 parts of a potassium fertilizer and 10-20 parts of a stabilizer, the microbial agent is prepared from nitrogen-fixing paenibacillus mucilaginosus MSSW01, bacillus nissi and streptomyces widermomole, and the microbial agent is prepared from bacillus mucilaginosus MSSW01 and streptomyces widermomole. The stabilizer is prepared from roxburgh rose extract, soybean protein isolate and gamma-aminobutyric acid according to the mass ratio of 2: 1: (0.2-0.5). By screening and optimizing three beneficial microbial strains and combining the synergistic effect of raw material components in a specific ratio, the yield and quality improvement of cotton can be remarkably promoted, and meanwhile, the occurrence rate of common diseases of cotton is effectively reduced.

The invention discloses mandulapalka milk and a preparation method thereof, and belongs to the technical field of beverage processing. According to the technical scheme provided by the invention, the preparation method of the degreased cyperus esculentus milk enzymolysis beverage comprises the following steps: adding high-temperature amylase into a degreased cyperus esculentus meal aqueous solution for enzymolysis for 1 hour, and then adding alkaline protease and flavourzyme for enzymolysis for 1 hour to obtain an enzymolysis solution; and finally, emulsifying residual starch and dextrin in the enzymatic hydrolysate by using soybean protein isolate and corn oil, and homogenizing by using a high-pressure homogenizer to obtain the cyperus esculentus beverage. According to the method, a multi-enzymolysis technology is adopted, the enzymolysis speed can be increased, the taste can be improved, a double-enzymolysis method is adopted, the enzymolysis time is shortened, starch is subjected to enzymolysis more sufficiently, and the flavor is improved. The defatted cyperus esculentus beverage prepared by the method disclosed by the invention is appropriate in sweetness, silky in mouth, mellow and strong in fragrance and unique in flavor, and is a healthy and mellow leisure beverage.

The invention belongs to the technical field of food processing, and particularly relates to a method for improving the taste and flavor of gel konjak noodles. Comprising the following steps: uniformly mixing 30-50 parts by weight of purified konjac powder, 10-30 parts by weight of wheat starch, 950-1050 parts by weight of drinking water, 0.1-1 part by weight of a natural pigment, 5-15 parts by weight of soybean protein isolate, 5-15 parts by weight of powdered oil and 15-25 parts by weight of a flavor substance to obtain a konjac mixture, mixing the konjac mixture with alkali liquor to obtain konjac dough, and baking the konjac dough in a baking oven to obtain the konjac flour. Performing extrusion forming on the konjak dough, performing heating to obtain konjak noodles, and finally performing dealkalization soaking treatment on the konjak noodles by adopting natural organic acid to obtain the gel konjak noodles. Through raw material combination and soaking treatment, the gel structure and puffing degree are changed, and alkali is removed, so that the flavor and taste of the gel konjak noodles are effectively improved.

The invention discloses a lithium manganese iron phosphate positive electrode material and a preparation method and application thereof, and belongs to the technical field of lithium battery positive electrode materials, the preparation method comprises the following steps: S1, adding a carbon nanotube into concentrated sulfuric acid and concentrated nitric acid for purification, heating and stirring, washing, and drying to obtain an acidified carbon nanotube; adding the acidified carbon nanotubes and soybean protein isolate into a phosphate buffer solution, and performing ultrasonic dispersion, ice-water bath reaction, centrifugation, filtration and drying to obtain a carbon source; s2, uniformly mixing a lithium source, a manganese source, an iron source and a phosphorus source, adding a carbon source, continuously stirring uniformly, ball-milling, drying, and pre-sintering to obtain a pre-sintered product; and S3, adding a carbon source into the pre-sintered product, continuously carrying out ball milling and drying, and carrying out secondary sintering to obtain the lithium iron manganese phosphate positive electrode material. The obtained lithium manganese iron phosphate positive electrode material is good in electrochemical performance, excellent in cycle performance and better in compaction density, and can be widely applied to lithium ion batteries.

The invention discloses a preparation method of compound soybean oligopeptide with wide application, and belongs to the technical field of soybean processing. The preparation method comprises the following steps: mixing and stirring soybean powder and deionized water to obtain a mixed solution, performing first enzymolysis on the mixed solution, inactivating, adjusting the pH value, and performing centrifugal separation to obtain a soybean protein isolate precipitate and a supernatant containing water-soluble polysaccharide; oxidizing the water-soluble polysaccharide to obtain oxidized water-soluble polysaccharide; carrying out secondary enzymolysis on the soybean protein isolate precipitate, inactivating, and carrying out chromatographic separation to obtain a soybean oligopeptide mixed solution; the preparation method comprises the following steps: mixing and homogenizing oxidized water-soluble polysaccharide, a soybean oligopeptide mixed solution, a carboxymethyl chitosan solution, absolute ethyl alcohol and an emulsifier to obtain a mixed emulsion, drying and dewatering the mixed emulsion, then cross-linking to obtain a cross-linked solution, mixing the cross-linked solution with water to obtain a feed liquid, and carrying out spray drying on the feed liquid to obtain the composite soybean oligopeptide.

The invention provides a weight-losing formula containing medicinal and edible components, and belongs to the technical field of medicines. The weight-losing formula comprises the following components in parts by weight: 35-50 parts of oat kernels, 10-12 parts of poria cocos, 20-30 parts of coix seeds, 5-8 parts of radix ophiopogonis, 10-15 parts of codonopsis pilosula, 5-8 parts of Chinese wolfberry fruits, 1-2 parts of dried orange peel, 10-15 parts of Chinese yams, 8-12 parts of haws, 10-16 parts of astragalus membranaceus, 3-5 parts of purple perilla, 15-20 parts of soybean protein isolate, 10-15 parts of red beans and 10-15 parts of fructus cannabis protein peptides. According to the weight-losing formula disclosed by the invention, natural medicinal material synergy is taken as a core, 14 components are compounded according to a specific ratio, a synergistic and complementary effect can be realized, and a large number of experiments prove that the weight-losing formula provided by the invention has the effects of comprehensively improving and controlling the weight, reducing the fat coefficient, improving lipid metabolism and preventing weight rebound. Moreover, the food is better in eating experience and safety, and suitable for long-term eating.

The invention discloses weight-reducing and blood-sugar-reducing meal replacement powder for increasing satiety and a preparation method thereof, and belongs to the technical field of meal replacement powder. Comprising resistant starch, bio-enzyme modified whey protein concentrate, bio-enzyme modified soybean protein isolate, bio-enzyme modified white kidney bean hydrolyzed protein, oat fiber powder, nano emulsion milk powder, mogroside, chitosan, inulin, konjac powder, pumpkin seed powder, a cactus extract, a griffonia simplicifolia seed extract and a Chinese waxgourd peel extract. Through the synergistic effect of multiple components and multiple processes, the obvious effects of satiety, weight loss and blood sugar reduction are achieved. 5-hydroxytryptophan in the griffonia seed extract can regulate satiety center and delay hunger sensation; dietary fibers such as the resistant starch and the inulin absorb water and swell in intestinal tracts to form high-viscosity gel, so that the satiety is further enhanced, and the eating frequency and the eating amount are reduced. A low-calorie and high-protein formula is combined with components such as tartronic acid in the Chinese waxgourd peel extract and the cactus extract, so that fat catabolism is accelerated, and fat synthesis is inhibited.

The invention relates to the field of aquatic feed, and provides a low-temperature adhesive type aquatic feed particle composition and a preparation method thereof. The composition is composed of puffed soybean meal, flour, fish meal, low-temperature directed enzyme, microcrystalline cellulose, modified zein nanoparticles, a protein adhesive and a modified zein ethanol water solution. The preparation method comprises the following specific steps: reacting soybean protein isolate with cross-linking enzyme to generate a protein adhesive, reacting proanthocyanidins with gallic acid to generate gallic acylated proanthocyanidins, and carrying out multi-step treatment on zein. Experimental results show that the composition has excellent water resistance and oxidation resistance, and the growth efficiency and the survival rate of aquatic animals are remarkably improved. The preparation method is simple, the cost is low, heat-sensitive substances in the feed are not damaged, and an economical, efficient and nutrient-rich feed solution is provided for aquaculture.

The invention discloses a method for regulating and controlling a starch-protein composite gel structure based on an ice template method, which comprises the following steps: adding starch and soybean protein isolate into water, heating a product which is uniformly dispersed and hydrated, and cooling to form a starch / protein composite gel; and freezing the prepared gel under the condition of-18 to-80 DEG C, taking out the gel, recovering the gel to room temperature, and the like. The starch / protein composite gel is prepared by adopting an ice template method, the preparation method is simple, the pore structure morphology of the prepared starch / protein porous composite gel is controllable, the texture property and juiciness of the starch / protein porous composite gel can be regulated and controlled, and a new way is provided for the quality improvement of industrial frozen porous gel. The starch / protein composite gel prepared by freezing at the temperature of-80 DEG C through the method has good texture characteristics, the hardness of the starch / protein composite gel is 555.57, the elasticity of the starch / protein composite gel can reach 0.95, and the chewiness of the starch / protein composite gel can reach 264.26.

The invention relates to the technical field of beverage preparation, in particular to a yeast protein fermented beverage and a preparation method thereof. The yeast protein fermented beverage is prepared from the following raw materials in parts by weight: 37-48 parts of yeast protein, 15-25 parts of soybean protein isolate and 0.01-0.03 part of lactic acid bacteria strain. The yeast protein fermented beverage provided by the invention breaks through the limitation of a traditional dairy product fermented beverage and a common plant protein fermented beverage, uses novel plant-based food as a guide, specifically uses the yeast protein, the soybean protein isolate and the lactic acid bacteria strain as main raw materials, and creates a yeast protein fermented beverage which is excellent in flavor and good in taste through process innovation and a taste optimization technology. The yeast protein fermented high-protein beverage is high in total protein content, has the effects of increasing muscle and promoting intestinal health, and has the sensory characteristics of being high in taste fineness, good in curdling and pleasant in fermentation flavor.

The invention discloses oyster-soybean compound protein gel constructed based on low-temperature synergy as well as a preparation method and application of the oyster-soybean compound protein gel, and belongs to the technical field of functional foods. The composite gel is formed by oyster protein and soybean protein isolate through low-temperature stabilization, medium-temperature construction and thermal induction treatment. The preparation method comprises the following steps: preparing an oyster protein suspension; preparing a soybean protein isolate suspension; the oyster protein suspension and the soybean protein isolate suspension are mixed, stirred and left to stand, a gel structure is preliminarily constructed and then subjected to thermal induction curing treatment, and after the thermal induction curing treatment is finished, the oyster-soybean compound protein gel is formed through storage at low temperature and can be used in the field of food processing. The oyster protein and the soybean protein isolate are combined, so that the composite gel has excellent gel strength, smooth texture and long-acting storage stability, no organic chemical reagent or food additive is used in the preparation process, the formula safety is ensured, the process is simple and convenient, and the composite gel shows huge application value and industrialization prospect.

The invention provides a foam dust suppression material as well as a preparation method and application thereof. The foam dust suppression material comprises a foaming agent, a surfactant, a thickening agent, inorganic salt and a solvent; wherein the foaming agent comprises soybean protein isolate and / or collagen; the surfactant comprises an anionic surfactant and / or a nonionic surfactant; the inorganic salt comprises one or more of potassium sulfate, magnesium chloride, sodium sulfate and sodium chloride. According to the foam dust suppression material, specific components are adopted, all the components cooperate with one another, and the dust suppression material is high in foaming rate, good in stability, good in dust suppression effect, environmentally friendly, non-toxic to the human body, capable of protecting the health of workers and improving the comfort level of the working environment, low in cost and good in economic benefit and social benefit.

The invention relates to the technical field of preparation of food additives, in particular to a betacyanin microcapsule as well as a preparation method and application thereof. The preparation method comprises the following steps: jointly dissolving sodium alginate and soybean protein isolate in water to obtain an SA-SPI compound; the SA-SPI compound, CaCO3 and betacyanin are mixed, and a water phase is formed; mixing liquid paraffin, glacial acetic acid and Tween 80 to obtain an acetic acid-containing oil phase; mixing the water phase with the acetic acid-containing oil phase to form a water-in-oil emulsion, and standing to form calcium alginate gel beads; the calcium alginate gel beads are subjected to pre-freezing-freeze-drying treatment, and the betacyanin microcapsules are obtained. The prepared betacyanin microcapsule has the characteristics of controllable particle size, high stability and easiness in industrialization, and the application range of betacyanin is widened. In addition, the preparation method disclosed by the invention is safe and simple to operate, has the advantages of low cost and high benefit, and can be directly applied to large-scale production.

The invention discloses a preparation method of soybean protein isolate / kappa-carrageenan composite gel loaded VD3, and belongs to the technical field of food processing. The method comprises the following steps: (1) preparation of soybean protein isolate: dispersing defatted soybean powder in ultrapure water, and extracting soybean protein isolate powder through alkali dissolution and acid precipitation; (2) preparing a soybean protein isolate / kappa-carrageenan compound solution: dispersing soybean protein isolate in deionized water to obtain a soybean protein isolate solution, adjusting the pH value to 7.0, dispersing kappa-carrageenan in the soybean protein isolate solution, and stirring for 2 hours to obtain a compound solution; and (3) preparation of VD3-loaded soy isolate protein / kappa-carrageenan composite gel: dissolving VD3 in ethanol to obtain a VD3 solution, fully stirring and mixing the VD3 solution with the compound solution obtained in the step (2), heating for 30 minutes, and refrigerating and storing for 12 hours to obtain the VD3-loaded composite gel. The texture structure of the gel can be remarkably improved, the composite gel with good texture and rheological properties is prepared, and the application of VD3 in the food industry can be improved when the composite gel is used for carrying VD3.

The invention discloses an intelligent indicating film for freshness of aquatic products and a preparation method thereof.The indicating film comprises a base film and a color developing agent, the base film is synthesized from soybean protein isolate and locust bean gum, the color developing agent is purple sweet potato anthocyanin and alizarin, the interior of the indicating film is of a porous structure, and the indicating film is spongy; the preparation method comprises the following steps: preparing a base film solution, then adding purple sweet potato anthocyanin and alizarin, uniformly mixing, then adjusting the pH value to 6.0 + / -0.1 to obtain a film-forming solution, pouring the film-forming solution into a mold, and freeze-drying to obtain the indicating film. The purple sweet potato anthocyanin and the alizarin are combined for use, the color developing sensitivity and stability of the indicating film are improved, the film has a porous structure by combining freeze drying, the color developing sensitivity and stability of the indicating film are further improved, and the indicating film has application potential in the field of intelligent food packaging.

The invention belongs to the technical field of probiotics, and particularly relates to a probiotic microcapsule with digestion resistance and adhesion as well as a preparation method and application of the probiotic microcapsule. According to the preparation method of the probiotic microcapsule with digestion resistance and adhesion, polyphenol, metal ions, soybean protein isolate and xanthan gum are adopted as wall materials, a polyphenol-metal ion complex coating and a complex coacervation system are constructed, and the microcapsule with a double-layer packaging structure is formed. According to the invention, through complexing of tannic acid and iron ions, a uniform coating is firstly formed on the surface of the probiotics, so that the adhesion is improved, and the packaging rate of the probiotics is improved. Meanwhile, the soybean protein isolate and the xanthan gum have a synergistic effect by utilizing the high stability of the soybean protein isolate and the xanthan gum, so that the activity of the probiotics in the storage period is effectively protected, high-quantity protection on the probiotics in a simulated digestion environment can be effectively realized, the probiotics enter intestinal tracts with high stock and high activity and are subjected to high-quantity colonization, and the probiotics are suitable for being developed and applied in probiotic preparations.

The invention belongs to the field of polyunsaturated fatty acid oil preparations, and discloses a steady-state phospholipid type DHA microcapsule as well as a preparation method and application thereof. The preparation method comprises the following steps: weighing resistant dextrin and soybean protein isolate as embedding wall materials according to a certain ratio, uniformly stirring, adding water, stirring and dissolving to form a wall material solution, adding polysaccharide into the wall material solution to obtain a solution A, adding core material grease into the solution A according to a certain ratio, stirring and dispersing, performing high-pressure homogenization to prepare an emulsion, drying, and sieving to obtain the high-temperature-resistant oil-in-oil-in-oil-in-oil-in-oil-in-oil-in-oil-in-oil-in-oil-in-oil-in-oil-in-oil-in-oil. The phospholipid type DHA microcapsule powder is subjected to subcritical treatment, and the steady-state phospholipid type DHA microcapsule powder is obtained. Polysaccharide substances with the molecular weight smaller than 10,000 Daltons are added into an embedding material, stability of polyunsaturated fatty acid grease can be provided, and the prepared phospholipid type DHA microcapsule is free of surface oil, complete in structure, good in taste masking effect, free of fishy smell or similar to fishy smell after being placed for 3 months and excellent in storage stability.

The invention discloses a composition helpful for maintaining the healthy level of blood sugar. The composition is prepared from the following components in parts by weight: 10-40 parts of diglyceride powder, 15-40 parts of soybean protein isolate, 10-30 parts of xylooligosaccharide, 1-4 parts of mulberry leaf extract, 1-4 parts of radix puerariae extract and 1-4 parts of radix astragali seu hedysari extract. According to the composition disclosed by the invention, a multi-dimensional regulation and control network of metabolic regulation, nutritional supplement and micro-ecological balance can be formed, so that a plurality of components generate a synergistic effect on blood sugar regulation, and the blood sugar regulation capability is remarkably improved.

The invention provides a rutin-modified soybean protein isolate-pectin-genipin nano-particle carrier and a preparation method of the rutin-modified soybean protein isolate-pectin-genipin nano-particle carrier. The preparation method of the nanoparticle carrier comprises the following steps: preparing a soybean protein isolate solution, a soybean protein isolate solution after pH shift, an aqueous solution containing rutin-modified soybean protein isolate and an aqueous solution containing rutin-modified soybean protein isolate-pectin; the aqueous solution contains rutin-modified soy isolate protein-pectin-genipin, the concentration of the genipin is 0.05 mg / mL, and the rutin-modified soy isolate protein-pectin-genipin nano-particle carrier is prepared from the rutin-modified soy isolate protein-pectin-genipin nano-particle carrier. The invention further provides application of the rutin-modified soy isolate protein-pectin-genipin nanoparticle carrier. The rutin-modified soy isolate protein-pectin-genipin nanoparticle carrier is used for sustained release of gastric drugs and targeted release of drugs in small intestines. According to the preparation method disclosed by the invention, a rutin-modified soybean protein isolate-polysaccharide nanoparticle carrier with a shell-core structure can be formed, gastric acid erosion can be effectively resisted, and the rutin-modified soybean protein isolate-polysaccharide nanoparticle carrier is delivered to small intestines in a targeted manner.