73 results about "Selenium enriched yeast" patented technology

The invention discloses a microbial compound feed additive, which is prepared from the following ingredients in parts by weight: 35 to 45 parts of traditional Chinese medicine residues, 25 to 35 parts of soybean meal, 15 to 25 parts of bran, 8 to 12 parts of corn flour, 0.3 to 0.7 part of selenium-enriched yeast, 8 to 12 parts of aspergillus niger spore powder, 10 to 15 parts of bacillus subtilis, 6 to 9 parts of lactobacillus plantarum and 5 to 8 parts of candida utilis. The invention relates to the technical field of feed additives, through the synergistic effect of the aspergillus niger, the bacillus subtilis, the lactobacillus plantarum and the candida utilis, the aspergillus niger can generate various enzymes, and decomposition of raw materials and release of nutritional ingredients are facilitated; the bacillus subtilis can enhance the immunity of livestock and poultry and inhibit the growth of harmful bacteria; lactobacillus plantarum can regulate intestinal microecological balance and promote digestion and absorption; candida utilis is rich in protein and vitamins and provides nutrition for livestock and poultry, the four components cooperate with each other, the function limitation of a single strain is broken through, and the health level and production performance of livestock and poultry are comprehensively improved.

The invention discloses a preparation method of a ganoderma spore oil grifola frondosa soft capsule based on a cold preparation method. The preparation method comprises the following steps: firstly, carrying out high-speed shearing and nanocrystallization treatment on grifola frondosa extract, selenium-enriched yeast, squalene and ganoderma lucidum spore oil for later use; and then melting gelatin, glycerol, water and cocoa shell extract at low temperature to obtain a gelatin solution, and finally preparing the soft capsule. According to the invention, on the basis of ensuring sufficient dissolution of the gelatin, the influence of the traditional gelatin melting temperature on the gel strength, the viscosity, the three-dimensional structure, the production stability and other performances and the application effect can be effectively avoided. Meanwhile, the ganoderma lucidum spore oil, squalene, grifola frondosa extract and selenium-enriched yeast are ingeniously combined, so that the content of a landmark component triterpenoid compound in the content is remarkably increased, and the metabolic detoxification capability of the liver and the anti-inflammatory and immune regulation effects of the body are enhanced.

The invention provides application of a siderophore-producing strain in preparation of selenium-enriched yeast, and belongs to the technical field of microorganisms. According to the invention, firstly, a siderophore-producing strain is separated from soil, the siderophore-producing strain can efficiently produce siderophores, and the yield of the siderophores reaches 43.7 mu g / mL; studies also find that the siderophore produced by the siderophore-producing strain can improve the tolerance of the saccharomyces cerevisiae to sodium selenite so as to prepare the selenium-enriched yeast, and the intracellular selenium content of the prepared selenium-enriched yeast is relatively high and reaches 3.89 mg / g; the antioxidant capacity of the selenium-enriched yeast is also improved compared with that of yeast cultured without selenium, and the selenium-enriched yeast is expected to serve as a safe and effective organic selenium supplement and has good practicability.

The invention discloses a selenium-containing compound microbial fertilizer containing an arbuscular mycorrhizal inoculant and a preparation method of the selenium-containing compound microbial fertilizer, and belongs to the technical field of fertilizers. According to the invention, arbuscular mycorrhizal fungi and selenium are effectively combined, the bioavailability of selenium is improved by utilizing a mycorrhizal symbiotic relationship, a polymorphic selenium source system combining the selenium-rich straws, the selenium-rich livestock manure and the selenium-rich yeast turns waste into wealth, the use of selenium fertilizer is reduced, the production cost is reduced, and the method is suitable for industrial production. The bio-availability of selenium is improved by virtue of the strong selenium absorption and transport capability of the arbuscular mycorrhizal fungi and the humic acid, so that the selenium content of edible parts of crops can be remarkably improved, efficient selenium biological enhancement is realized, and selenium-rich agricultural products are produced.

The invention relates to the technical field of health-care food, in particular to a method for preparing selenium-enriched yeast. The preparation method comprises the following steps: S1, preparing mixed powder; s2, preparing a paste; s3, standing and fermenting the obtained paste; s4, adding anhydrous alcohol into the obtained fermentation product, stirring, centrifuging, taking precipitate, and recycling supernate; s5, adding purified water into the obtained precipitate, adding silicon dioxide at the same time, performing uniform stirring, and then uniformly laying the mixture on a fluidized bed distribution plate for drying to prepare a dry powder finished product; according to the present invention, the flour is adopted as the carbon source, the bean powder is adopted as the nitrogen source, the simplest solid state fermentation mode is adopted, the fermentation time is short, the selenium-rich yeast can be prepared in a large scale, and the carbon and nitrogen sources are the cheap edible raw materials, and no other chemical components are added, such that the complex separation purification process is not required after the fermentation is completed; the food can be directly eaten only through simple fluidized bed drying, and is low in cost, safe and reliable.

The invention provides a probiotic composition for improving immunity and a preparation method thereof, and belongs to the technical field of probiotics. The preparation method comprises the following steps: fermenting selenium-enriched nostoc sphaeroides through selenium-enriched saccharomycetes to extract selenium-enriched nostoc sphaeroides polysaccharide and selenium-enriched nostoc sphaeroides protein peptide, mixing with traditional Chinese medicine polysaccharide obtained by extracting astragalus membranaceus, rhodiola rosea, codonopsis pilosula and pseudo-ginseng, and reacting with ferric salt to prepare a polysaccharide-Fe / selenium compound; solid residues are mixed and fermented, and active protein peptide is prepared from the solid residues and selenium-rich nostoc sphaeroides protein peptide; the probiotic composition capable of improving immunity is prepared by extracting a polysaccharide-Fe / selenium compound and a polysaccharide-Fe / selenium compound through an organic solvent, extracting a permeate through an organic solvent to obtain an active component, collecting a bacterial liquid, mixing and embedding the bacterial liquid in the polysaccharide-Fe / selenium compound and sodium alginate, and uniformly mixing the bacterial liquid with the active protein peptide, the active component, taurine and ginsenoside Rg3, so that the probiotic composition capable of improving immunity can play good anti-inflammatory, anti-oxidation, immunoregulation, anti-tumor, anti-virus and other roles, and has a good application prospect. Wide application prospects are realized.

The present invention discloses a preparation method of Ganoderma lucidum spore oil and Grifola frondosa soft capsules based on a cold preparation method. First, Grifola frondosa extract, selenium-enriched yeast, squalene, and Ganoderma lucidum spore oil are subjected to high-speed shear nano-processing and then set aside; subsequently, gelatin is subjected to low-temperature gelation with glycerol, water, and cocoa shell extract to obtain a gelatin solution, and finally, soft capsules are prepared. While ensuring that gelatin is fully dissolved, the present invention effectively avoids the impact of traditional gelation temperature on gel strength, viscosity, three-dimensional structure, production stability, and other properties and application effects. At the same time, the Ganoderma lucidum spore oil and squalene, Grifola frondosa extract, and selenium-enriched yeast are cleverly combined to significantly increase the content of triterpenoid compounds, a characteristic component in the contents, thereby enhancing the liver's metabolic detoxification ability and the body's anti-inflammatory and immunomodulatory effects.

The invention provides a biological nano-selenium nutrient as well as a preparation method and application thereof, and belongs to the technical field of heavy metal treatment. The biological nano-selenium nutrient disclosed by the invention is obtained by microorganism synthesis and separation; the microorganisms are selenium-enriched saccharomycetes; the biological nano-selenium nutrient is derived from biosynthesis, and compared with a traditional chemical synthesis nano-material, the preparation process of the biological nano-selenium has the advantages of low energy consumption and few byproducts, and can be used for heavy metal treatment in multiple fields.

The invention relates to a selenium-rich condiment and a preparation method thereof. According to the seasoning provided by the invention, various nutritional ingredients are added, the taste regulating composition contains vegetables, meat and the like, so that the nutritional ingredients are enriched, the flavor is unique, organic selenium is provided for the seasoning by the added selenium-enriched vegetables, selenium-enriched yeast and the like, the selenium element daily required by a human body can be provided, and the health of the human body is ensured. According to the technology, effective components of the seasoning are increased, the functionality is higher, the market requirement is met, and application and popularization are convenient.

The invention discloses an optimized formula of plant organic nano-selenium for activating an immune system, inhibiting cancer cell proliferation, preventing cancers, preventing tumors, resisting oxidation and resisting aging, and belongs to the technical field of functional food formulas. According to the formula, selenium-enriched yeast and dl-alpha-tocopheryl acetate are used as main materials, L-ascorbic acid can be selectively added, auxiliary materials such as microcrystalline cellulose and starch sodium octenylsuccinate are matched to prepare a capsule preparation, and the content of functional components in a single preparation is precisely controlled as follows: 90-100 micrograms of selenium and 40-50 mg of vitamin E, or 90-100 micrograms of selenium, 40-50 mg of vitamin E and 40 mg of vitamin C. According to the invention, synergistic interaction is realized through scientific proportioning of functional components, a fat-soluble and water-soluble dual anti-oxidation system is constructed, an organism immune system can be effectively activated, cancer cell proliferation can be inhibited, and meanwhile, the composition has multiple effects of preventing cancers, preventing tumors, resisting oxidation and resisting aging; the preparation method is simple and convenient in process, easy in parameter control and suitable for industrial large-scale production, the prepared preparation is high in active ingredient stability, excellent in bioavailability, high in safety and capable of being widely applied to preparation of related functional foods, and all raw materials are food-grade. The technical problems that an existing selenium compound formula is unreasonable in proportion, poor in efficacy synergy and poor in preparation performance are solved.

The invention discloses an anti-radiation organic selenium salt and a preparation method and application thereof in the field of functional food additives. The anti-radiation organic selenium salt is prepared from the following components in percentage by weight: basic salt: 80-95% of lake salt, rock salt, bamboo salt, sea salt or refined table salt; the organic selenium active ingredients comprise 0.1 to 2 percent of L-selenomethionine, and / or 1 to 3 percent of selenium-enriched yeast extract, and / or 0.5 to 2 percent of selenized carrageenan. Through fluidized bed coating and microcapsule technologies, the six-month selenium retention rate is greater than or equal to 95%, the problem that organic selenium is easy to degrade is solved, the stability is high, L-selenomethionine and vitamin E cooperate, and simulated digestion experiments show that the selenium bioavailability is greater than or equal to 80% and is superior to that of inorganic selenium (lt); 50%); the organic selenium scavenges free radicals, the vitamin E protects cell membranes, and the zinc and the astragalus extract enhance immunity, so that all-around radiation protection is realized; the amino acid mixture covers the bitter taste of the organic selenium, the delicate flavor score is greater than or equal to 7.5 / 10, and the palatability is good; the method can be directly integrated to an existing salt production line, and is suitable for industrial production.

This invention discloses a blueberry anthocyanin nutritional solid composition for relieving eye discomfort. The composition comprises blueberry anthocyanin solid powder, algal oil powder, zinc gluconate, and selenium-enriched yeast, and may optionally contain lipid nutrients containing gamma-linolenic acid, as well as food additives and excipients. Oral administration of this composition provides the body with various nutritional supports related to ocular surface function and ocular moisture, helping to maintain tear secretion levels, improve tear film stability, and support the normal physiological state of the corneal epithelium, thereby relieving eye dryness and discomfort caused by environmental stimuli or increased eye strain. Animal experiments showed that after 14 days of continuous administration of the composition, experimental mice exhibited a significantly increased tear secretion volume compared to the control group without the composition, with an increase of approximately 165%. Corneal fluorescein staining scores were also significantly reduced, indicating improved ocular surface condition and significantly enhanced eye comfort.

The invention relates to the technical field of biological medicine and food fermentation, in particular to a black fungus antihypertensive peptide culture medium composition based on selenium-enriched yeast protein, a liquid fermentation method and antihypertensive application of the black fungus antihypertensive peptide culture medium composition. The culture medium comprises selenium-enriched yeast protein, glucose, fermented soybean water extract dregs, inorganic salt and trace elements, the high-activity antihypertensive peptide is obtained by optimizing a liquid fermentation and separation purification process, the ACE inhibition IC50 value of the high-activity antihypertensive peptide is smaller than 50 micrograms per milliliter, and the high-activity antihypertensive peptide can be compounded with a hawthorn extract and the like to prepare an oral preparation and has a remarkable antihypertensive function.

The application discloses a selenium-containing composite microbial fertilizer containing arbuscular mycorrhizal fungi and a preparation method thereof, and belongs to the technical field of fertilizers.The arbuscular mycorrhizal fungi and selenium elements are effectively combined in the application, the symbiotic relationship of mycorrhiza is utilized to improve the bioavailability of selenium, a multi-form selenium source system combining selenium-rich straw, selenium-rich poultry manure and selenium-rich yeast is used to change waste into treasure, the use of selenium fertilizer is reduced, the production cost is lowered, and the selenium absorption and transport capacity of arbuscular mycorrhizal fungi is relied on to improve the bioavailability of selenium in cooperation with humic acid, so that the selenium content of edible parts of crops can be significantly improved, efficient selenium biofortification can be realized, and selenium-rich agricultural products can be produced.

The invention belongs to the technical field of health-care products, and discloses an oligosaccharide selenium ganoderma lucidum capsule for enhancing immunity and inhibiting tumors and a preparation method, and the content of the capsule is prepared from the following raw materials in parts by mass: 150-160 parts of collagen, 80-85 parts of chitosan oligosaccharide, 110-130 parts of ganoderma lucidum extract, 45-55 parts of selenium-enriched yeast, 50-80 parts of maltodextrin and 7-10 parts of magnesium stearate. The skin barrier can be improved, intercellular communication can be promoted and local immune response can be stimulated through low-molecular peptide of collagen, intestinal flora balance can be adjusted through chitosan oligosaccharide, probiotic growth can be promoted, mucous membrane immunity can be further improved, and finally immune cells can be effectively activated through polysaccharide and triterpenoids in the ganoderma lucidum extract, so that the immunity of a human body is improved. The activity of macrophages and natural killer cells is enhanced, and the multi-target and multi-path immune regulation effect can effectively enhance the defense of the body to pathogenic microorganisms.

The invention discloses a biomass saline-alkali soil improver and a preparation method thereof, and relates to the technical field of soil improvement. The fertilizer comprises the following raw materials in parts by weight: 25-35 parts of plant straw compost, 10-15 parts of soybean meal, 15-20 parts of iron modified biomass charcoal, 12-18 parts of humic acid, 3-5 parts of selenium-enriched yeast powder, 8-12 parts of a magnetic bentonite-based nano cellulose composite material, 2-4 parts of a composite salt-tolerant microalgae composition, 5-8 parts of desulfurized gypsum and 2-4 parts of a water-retaining agent. The raw materials are uniformly mixed to obtain the biomass saline-alkali soil modifier. The biomass saline-alkali soil modifier provided by the invention effectively realizes efficient, stable and sustainable improvement of saline-alkali soil.

The application relates to organic selenium-rich yeast, a preparation method and products and applications thereof. The organic selenium-rich yeast is prepared by step-by-step expansion culture, fermentation culture, collection of yeast cells and drying, wherein the fermentation culture takes organic starch hydrolysis sugar, organic plant protein enzymolysis liquid and selenium-rich yeast extract as a culture medium. In the organic selenium-rich yeast, the proportion of selenomethionine form selenium in the total selenium weight is greater than 80%, even greater than 90%, the proportion of organic selenium in the total selenium weight is greater than 99%, the total selenium content is 800-2100 ppm, the absorption and utilization rate of the yeast to selenium can reach more than 95%, and the absorption and utilization rate and conversion rate in feeding and food are high. Organic starch and organic plant protein are used as culture medium raw materials, the organic raw material usage is more than 95%, and the organic product certification requirements can be met.

The invention discloses a formula and a preparation method of a disease-preventing health-care oral liquid. The health-care food is prepared from the following raw materials in parts by weight: 4 to 6 milliliters of purple perilla seed oil, 5 to 7 milliliters of walnut oil, 100 to 150 milligrams of algal oil, 200 to 250 milligrams of grape seed extract, 50 to 80 milligrams of selenium-enriched yeast, 80 to 120 milligrams of vitamin C, 80 to 120 milligrams of vitamin E, 0.6 to 1.0 milligram of vitamin B1 (thiamine) and 0.6 to 1.0 milligram of vitamin B2 (riboflavin). After being taken by multiple persons for a period of time, the traditional Chinese medicine composition is proved to be safe to take, free of adverse reaction and obvious in health care effect, old people feel weak in action, heavy in whole body, dry in mouth and throat and insomnia and constipation before taking the traditional Chinese medicine composition, symptoms are relieved after taking the traditional Chinese medicine composition, and the traditional Chinese medicine composition is safe to take, free of adverse reaction and obvious in health care effect. Young people are good in working state and honor in spirit, and children are fast in learning progress, good in taste, high in adaptability and beneficial to popularization, and can play a positive role in prevention before illness.

The invention discloses a selenium-rich condiment as well as a preparation method and application thereof, and belongs to the technical field of condiments. The medicinal and edible extract, the selenium-enriched yeast and the active antihypertensive substance are added into the selenium-enriched condiment to form a synergistic system of natural active ingredients, trace elements and targeted antihypertensive substances, so that on one hand, accurate sodium benefiting, diuresis and antihypertensive are realized, on the other hand, the blood vessel function is regulated by virtue of the medicinal and edible ingredients, and meanwhile, the selenium element protects the vascular endothelium; the triple effects are superposed, the blood pressure is more stable and lasting, and the risk of cardiovascular diseases can be reduced; besides, seasoning components such as brewed soy sauce powder and sodium glutamate are added to lay a flavor foundation, the dosage of functional components is strictly controlled, the influence of peculiar smell on the core taste of the seasoning is avoided, the bottleneck that the existing product is preferential in effect and insufficient in flavor is broken through, daily cooking seasoning requirements are met, and consumers can unconsciously realize health intervention in diet. The application scene of medicinal and edible food and selenium-enriched food is expanded.

The invention discloses immunity-enhancing nutritional freeze-dried powder for cats and a preparation method of the immunity-enhancing nutritional freeze-dried powder, and relates to the technical field of freeze-drying. The preparation method comprises the following steps: taking chicken breast granules, tenebrio molitor powder, hermetia illucens larva powder, chicory root paste, puree of kudzuvine root, puree of broccoli, puree of blueberry, puree of carrot, puree of pumpkin, puree of cranberry, puree of brown algae, puree of chlorella, astragalus membranaceus concentrated solution, bovine colostrum powder, zinc methionine chelate, iron lysine chelate, lactoferrin, mannan oligosaccharide, embedded bifidobacterium lactis powder, docosahexaenoic acid and linoleic acid; uniformly stirring yeast beta-glucan, a rosemary extract, selenium-enriched yeast, coenzyme Q10 and natural vitamin E, and performing high-pressure homogenization to obtain slurry; forming the slurry through a brace, an extrusion device or a scraping die to obtain formed slurry; performing ultrasonic treatment on the formed slurry; gradient boosting and constant pressure are carried out; freezing and thawing; performing pre-freezing; performing vacuum freeze drying; after the drying is finished, slowly introducing dry and sterile nitrogen; and screening, carrying out quality inspection, sub-packaging and sealing to obtain the immunity-enhancing nutrient freeze-dried powder for cats.

The invention belongs to the technical field of fermentation, and particularly relates to selenium-enriched yeast and a preparation method thereof. The total selenium content in the selenium-enriched yeast is (1500-2500mg / Kg), the organic selenium accounts for more than or equal to 97.0% of the total selenium, and the protein accounts for more than or equal to 51% of the total selenium. The selenium-enriched yeast prepared from saccharomyces cerevisiae is subjected to step-by-step amplification culture, and culture conditions and nutrient solution components are controlled, so that the prepared product is high in total selenium content, high in protein content and good in flavor, the mass percentage of organic selenium in the total selenium also meets the national standard, and meanwhile, compared with a preparation method of baker's yeast, the content of selenium in the product is greatly increased. The preparation method disclosed by the invention is more suitable for production of selenium-enriched yeast, less in material loss and good in economic benefit.

The invention discloses a preparation method of a selenium-rich sea urchin fermented feed, a sea urchin feed is obtained through fermentation of selenium-rich yeast and selenium-rich bifidobacterium, an inorganic selenium source is converted into organic selenium with higher biological activity by using a microbial fermentation method, the safety of a selenium supplement is improved, and after the selenium-rich sea urchin fermented feed is used for feeding sea urchin, the selenium content of the sea urchin is increased. The absorption utilization rate and palatability of the feed can be improved, and then the intestinal health of the sea urchins is improved. The selenium-rich sea urchin fermented feed prepared by the invention has the characteristics of sufficient selenium supplement and safe selenium supplement, is high in organic selenium content, good in safety and good in feed palatability, and also has the characteristics of being wide in raw material source, balanced in nutrition, high in feed coefficient, free of pathogenic bacteria and the like.

The invention discloses a pet feed additive for enhancing gastrointestinal peristalsis. A double-layer embedding structure is adopted, wherein the outer layer is a pH response type compound formed by chitosan and sodium alginate, and the effects of stomach protection and intestinal tract targeted slow release are achieved; the core of the inner layer is a compound of resveratrol and inulin and selenium-enriched yeast prepared through biotransformation. The composition has the synergistic effect through multiple target points: the resveratrol is used for regulating intestinal nerves and resisting inflammation, the inulin is used as prebiotics for promoting proliferation of beneficial bacteria, and the organic selenium is used for enhancing the oxidation resistance of intestinal mucosa, so that the gastrointestinal tract peristalsis is comprehensively and safely promoted. Experiments show that the additive can significantly improve the defecation condition, shorten the gastrointestinal transmission time, optimize the intestinal flora and reduce inflammation, and is suitable for being added to pet food needing to improve gastrointestinal motility.

The present invention discloses a composition for improving lung nodules and detoxification, its preparation method and application, which relates to the technical field of medicine. The composition comprises the following components in parts by weight: 60-64 parts of dandelion extract, 20-30 parts of β-nicotinamide mononucleotide, 2-20 parts of coenzyme Q10, and 2-10 parts of selenium-enriched yeast. The composition is fermented and transformed by selenium-enriched yeast, which is beneficial to increasing the content of active ingredients, converting some other ingredients into active ingredients, and enhancing the drug effect. The components and raw materials used in the composition of the present invention are cheap and easily available, convenient to use, with small toxic and side effects. The provided preparation process is simple in operation, easy to conduct quality control during the production process, and the prepared composition has stable components.

The invention discloses a preparation method of selenium-enriched crafted beer, and aims to solve the problems that the existing beer is low in selenium content and the taste and flavor are influenced by selenium enrichment. The method comprises the following steps: firstly, selecting high-quality barley malt, humulus lupulus, yeast and water, and taking sodium selenite or selenium-enriched yeast as a selenium source; barley malt is soaked in a selenium-source-containing aqueous solution to be rich in selenium, and saccharification is performed after airing; mixing the selenium-enriched malt with other malt according to a ratio, saccharifying, filtering to obtain wort, boiling, and adding humulus lupulus in times; cooling the wort to a proper temperature, inoculating yeast for fermentation, performing low-temperature after-ripening after fermentation, and filtering; and finally, filling and pasteurizing. Through sensory evaluation, the beer disclosed by the invention is superior to conventional craft beer in appearance, aroma, taste and flavor coordination; main physicochemical indexes meet the national standard, and the selenium content is remarkably increased; bitter taste is appropriate and balanced with sweet taste. According to the method, the beer is rich in selenium on the basis of keeping good taste and flavor, and a craft beer product with a health-care function is provided for consumers.

The invention provides a liver-protecting alcoholism-relieving oral dissolving film (film candy) and a preparation method thereof, and belongs to the technical field of functional food. The composition comprises 20-50 parts of a radix puerariae extract, 5-15 parts of selenium-enriched ganoderma lucidum powder / ganoderma lucidum extract, 0.1-1 part of a ginger extract, 0.1-1 part of selenium-enriched yeast powder, 40-50 parts of a composite film-forming agent, 3-15 parts of a vegetable oil / fish and shrimp oil penetration enhancer and 0.5-5 parts of a functional auxiliary agent. The preparation method comprises the standardized technological processes of raw material pretreatment, homogenization treatment, step-by-step mixing, vacuum defoaming film-forming paste preparation, coating forming, original three-stage air inlet drying and slitting packaging, and the core innovation point of the preparation method is the original three-stage air inlet drying process, so that the industrial process bottleneck is thoroughly solved. The product disclosed by the invention can be directly taken in the oral cavity without water, can be completely dissolved within 1-5 minutes, the active ingredients are rapidly absorbed through oral mucosa, the gastrointestinal tract first-pass effect is avoided, the product can take effect within 30 minutes, and the product is adaptive to various scene requirements.

The invention relates to the technical field of feed compositions, in particular to a feed composition for enhancing anti-stress ability of mice, which comprises a basic nutrition system and an anti-stress function system, the basic nutrition system comprises cereals, a protein source, a fat source, minerals and a vitamin premix; the anti-stress function system comprises immunoregulation polysaccharide, an organic selenium source and a neuroregulation component; the immunoregulation polysaccharide is selected from at least one of astragalus polysaccharide, codonopsis pilosula polysaccharide and lycium barbarum polysaccharide; the organic selenium source is selected from at least one of selenium yeast, selenized carrageenan and selenium-enriched yeast; the neuroregulation component is selected from at least one of gamma-aminobutyric acid, taurine and theanine. By constructing a ternary synergistic system of the immunomodulatory component, the organic selenium source and the neuromodulation component, a three-dimensional anti-stress mechanism of immunological enhancement, antioxidant protection and neuroendocrine regulation is realized, and multiple damage of stress to a mouse body is relieved from the source.

The invention relates to the technical field of food science, and provides a selenium-rich compound formula with an anti-aging function for dogs. Comprising the following components: 5-12% of selenium-enriched yeast powder, 8-15% of compound probiotic freeze-dried powder, 25-30% of euphausia superba powder, 2-5% of a yucca extract, 4-8% of cranberry polyphenol, 5-10% of xylooligosaccharide, 10-15% of trehalose, 1-3% of carboxymethyl cellulose and 0.5-2% of phospholipid. The selenium-enriched yeast powder is used as a source of selenium, and the selenium exists in the form of selenomethionine, so that the bioavailability of the selenium is improved, and the toxicity risk is remarkably reduced. Compared with the prior art, the selenium-enriched yeast powder is added, so that the activity of an Nrf2 pathway in a dog body is up-regulated, the activity of superoxide dismutase (SOD) is further improved to 2.3 times of the original activity, free radicals are more efficiently removed, and senescence is delayed.

The invention discloses a preparation method of nanoscale wall-broken selenium-enriched yeast, and relates to the technical field of food biologication.The preparation method comprises the following steps that selenium-enriched yeast suspension liquid is prepared; the selenium-enriched yeast suspension is subjected to mild local pore pretreatment, and local pores are formed in cell walls; a mixed solution containing amphiphilic molecules is added into the treated suspension liquid, a reaction is carried out under the low-strength shearing condition to form nanosheets, and the amphiphilic molecules comprise beta-cyclodextrin or a derivative thereof; and carrying out stabilizing treatment on the obtained product, and drying to obtain the nano-scale wall-broken selenium-enriched yeast. According to the invention, the nano-scale wall breaking with relatively ordered structure of the cell wall is realized, and the release and absorption efficiency of the selenium component in the gastrointestinal tract can be obviously improved; the wall breaking process is mild, low in temperature and low in shearing, the structural integrity and biological activity of selenium active ingredients are effectively protected, and the retention rate of the active ingredients is remarkably superior to that of a traditional violent wall breaking method.

The present invention proposes a composition containing ginseng extract, a preparation method and application thereof, and belongs to the technical field of fermentation and extraction. The enzyme liquid is obtained by fermenting white ginseng fungus, ginseng and astragalus powder are added, enzymolysis is performed, and heating extraction is performed. The obtained product is mixed with a fermentation-promoting composition, glucose, and water, and fermented with rhamnosus lactobacillus and selenium-enriched yeast. The obtained fermentation product is added to a metal ion solution, stirred to obtain a Zn-Fe-fermentation complex, mixed with resveratrol and cordycepin, added to molten PEG6000, evenly dispersed, freeze-cured, dried, crushed, sieved, and a composition containing ginseng extract is obtained, which has good antioxidant, anti-aging, and anti-tumor effects. At the same time, it is easy for human body to absorb and contains almost no pesticide residues or heavy metals, has the characteristics of fast dissolution rate, fast drug effect, etc., and has broad application prospects.