5694results about How to "Antioxidant" patented technology

The invention discloses a preparation method for edible fungus nutritional health-care functional drink. The method comprises the following steps of: performing deep fermentation cultivation on special edible fungus strains in a fermentation tank to obtain fermentation liquor and mycelium; directly crushing the fermentation liquor and mycelium mechanically and performing homogenate without performing hot-water lixiviating or enzymolysis treatment to obtain drink raw stock; and blending the raw stock and purified water in a certain ratio, and adding an appropriate amount of flavoring agent, stabilizing agent and the like, and sterilizing and packaging to obtain a finished product. The editable fungus drink which is prepared by the method contains the nutrient substances such as crude fiber, crude protein, crude fat, vitamin, and amino acid and trace elements which are essential in a human body and the like, and simultaneously contains edible fungus polysaccharide, terpenoids, total phenol, alkaloid, flavonoid and other physiological activator and has the health-care function of improving immunity of a human body, and resisting tumors, oxidation and aging and the like. The drink hasoriginal taste, sour and sweet taste, milk taste, fruit taste and the like according to the requirements of different crowds.

The invention relates to a preparation method of a silicon-carbide-fibrofelt-enhanced silica aerogel composite material, and relates to an aerogel composite material. According to the invention, a carbon-rich silicon carbide micro-nano ceramic fibrofelt with small fiber diameter, high porosity, communicating pores, fast impregnation speed, and good compatibility with a substrate is prepared with a static electro-spinning technology combined with a precursor conversion method; a silica sol is prepared with an acid-alkali two-step method; with an infiltration technology, the electro-spun silicon carbide ceramic fibrofelt or precast is soaked into the sol; and through processes such as gel process, aging, curing, solvent exchange, supercritical drying, and the like, the silicon-carbide-fibrofelt-enhanced silica aerogel composite material is obtained. The prepared composite material has the characteristics of low density, large specific surface area, super-hydrophobicity, low thermal conductivity, and the like. The strength and toughness of the material are also greatly improved. The carbon-rich silicon carbide fiber has an infrared shielding effect, such that composite material thermal insulation effect and ultra-high-temperature stability can be improved.

The invention discloses an electronic cigarette liquid rich in plant flavone. The electronic cigarette liquid comprises the following raw materials in percentage by mass: 50-70% of propylene glycol, 5-10% of glycerinum, 5-15% of deionized water, 5-15% of natural flavone extract, 4-8% of tobacco extract, 2-6% of tobacco essence and 2-6% of thickener, wherein the natural flavone extract is the extract obtained by distilling by vapour or extracting a plant mixture by ethyl alcohol, and the total flavonoid content is 20-50% by total flavonoid content; the plant mixture is composed of chuzhou chrysanthemum, iris tectorum roots, propolis, orange peel, grape, peanut coat, lily, radix puerariae, scutellaria baicalensis, roxburgh rose and green tea. The electronic cigarette liquid disclosed by the invention is capable of meeting the smoking needs of smokers; meanwhile, the rich plant flavone has the effects of resisting oxidization, preventing aging, and adjusting immunity, and also has a healthcare effect on heart and cerebral vessels to a certain extent.

The invention discloses an isatis root oil microcapsule and an isatis root oil microcapsule functional fabric finishing agent. The isatis root oil microcapsule of the invention has a particle size of 5-10 microns, and a mass ratio of a core material and a wall material of 1:0.5-1.75; the isatis root oil microcapsule functional fabric finishing agent comprises 40-65% of isatis root oil microcapsule emulsion, 5-15% of crease resistant cross-linking agents, 1.5-5% of catalysts, 0.2-2% of penetrating agents, 5-8% of softeners, and 10-35.75% of water. The isatis root oil microcapsule of the invention can cover adverse smell of isatis root oil, slowly release isatis root oil, maintain the stability of isatis root oil, and prolong its efficacy. The isatis root oil microcapsule functional fabric finishing agent of the invention provides finished fabrics with a plurality of functional effects such as durable and antibacterial effect, antiviral effect, and crease resistance, and provides fabrics with good softness and permeability.

The invention provides a yangtao lucid ganoderma composite ferment and a preparation method thereof. The preparation method comprises the following steps of: introducing ganoderma lucidum into fruit which takes the yangtao as a main raw material, and processing to obtain a ferment edible beverage which is higher in nutritive value and better in health-care effect after the processing of fermentation engineering and bio-extraction technologies. The raw material used in the yangtao lucid ganoderma composite ferment is the combination of the yangtao which is enriched in benefit ingredients such as vitamin C, polysaccharide and amino acid and the valuable medicinal and edible fungus, so that the yangtao lucid ganoderma composite ferment has various physiological activities such as antioxidation, stomach and intestine nourishing, the three high disease prevention and treatment, immunity improving and cancer prevention and treatment; the raw materials are treated by an ozone technology, the microorganisms on the surfaces of the raw materials can be effectively killed, the integrity of the raw materials can be guaranteed, and the nutrient substances and the active substances, i.e., the enzyme, can not be influenced; and the bio-extraction of the active substances, i.e., the yangtao, can be realized by adopting a normal-temperature (26-34DEG C) multi-flora, multi-stage and multi-level co-fermentation technology, so that the prepared ferment edible beverage simultaneously comprises the effective active ingredients, i.e., the yangtao and the lucid ganoderma, various probiotics and benefit metabolite of the active ingredients and the probiotics.

The invention relates to a preparation method of a walnut peptide powder, which effectively embodies a plurality of biological functional properties of the walnut peptide powder, reserves a plurality of nutritional components of walnuts. The polypeptide content in the walnut peptide powder is 60-80 percent, while the walnut peptide powder is light yellow or yellow-white color and has functions of anti-fatigue and antioxidation, etc. The invention comprises the following operation steps: crushing the walnut cakes before extracting the walnut protein, then carrying out enzymatic hydrolysis and centrifugation to the crude walnut protein to acquire the supernatant, dialyzing the supernatant and removing impurities and macromolecular compounds, and then concentrating the acquired dialysate, and at last vacuum drying to prepare the walnut peptide powder and packing into finished products.

The invention relates to a preparation method of an edible film with antibacterial and antioxidant functions, and belongs to the technical field of edible packaging materials. The preparation method disclosed by the invention comprises the following steps: 1) dissolving and gelatinizing corn starch; 2) dissolving gelatin; 3) dissolving chitosan; 4) adding glycerin and plant essential oil or essential oil components; 5) mixing, homogenizing and refining; 6) degassing; 7) tape-casting; and 8) drying and stripping the film. The preparation method disclosed by the invention has the beneficial effects that the chitosan, the corn starch and the gelatin are taken as base materials of the edible film, the sources of the raw materials are wide, the cost is low, and the prepared edible film has the advantages of strong mechanical properties, high barrier performance and great transparency. Oregano oil, carvacrol and cinnamaldehyde are taken as an antibacterial agent and an antioxidant so as to be added into the edible film, the processing process is simple and easy to operate, the cost is low, the edible film is non-toxic and safe to eat, and the prepared edible film has great antibacterial and antioxidant properties.

The invention discloses spicy hot pot seasoning and a preparation method of the spicy hot pot seasoning. The spicy hot pot seasoning comprises the following raw materials: rapeseed oil, beef tallow, watercress, dried chilli, glutinous rice cake pepper, green prickleyash, fermented glutinous rice, broken rice sprouts, lobster sauce, amomun kravak pierre ex gagnep, medlar, lily, cumin, white lotus and the like. The preparation method comprises the steps of: heating up a pot, adding the rapeseed oil and the beef tallow, and putting in the dried chilli, the green prickleyash, ginger, garlic and green onions when bubbles do not exist for stir-frying; adding the glutinous rice cake pepper, the watercress, the broken rice sprouts and the lobster sauce for stir-frying at medium baking temperature; adding anise, kaempferiae, cinnamon, fennel, myrcia, lithospermum, tsaoko amomum fruit, clove, fructus amomi, the amomun kravak pierre ex gagnep, the cumin and the white lotus for stir-frying by using soft fire; and adding chicken essence, monosodium glutamate, salt, rock candy, the fermented glutinous rice, the medlar and the lily into the pot for stirring, turning off the heat and dishing up. The spicy hot pot seasoning and the preparation method use the mixed oil of the rapeseed oil and the beef tallow, and add the ingredients such as the cumin, the amomun kravak pierre ex gagnep, the medlar and the white lotus so as to effectively improve the adverse reactions such as parched mouth and scorched tongue, eye conjunctiva hyperemia and gastrointestinal discomfort after eating, and the spicy hot pot seasoning is mellow in taste, spicy but not dry, pungent but not strong, healthy and nutritional.

The invention provides a fruit and vegetable fresh-keeping agent, a preparation method and application thereof. The fresh-keeping agent uses burdock fructo-oligosaccharides as main composition and combines aqueous solution prepared by chitosan, ascorbic acid, salicylic acid, calcium chloride and acetic acid to treat fruit and vegetable, so that a fruit and vegetable system can obtain the improved resistance, and a hyaloplasmic fresh-keeping membrane is formed on the surface of the fruit and the vegetable so as to effectively inhibit the growth of microbe, prevent moisture dissipation and contact between the fruit and the vegetable and air, and inhibit breath and transpiration, thereby greatly deferring aging of the fruit and the vegetable, and inhibiting putridity, mildew and rot. The fruit and vegetable fresh-keeping agent is applicable to storage and fresh-keeping for various fruits and vegetables with long fresh-keeping period and small consumption of nutrient materials.

The invention relates to a butter inhibitor used for an ethylene unit alkaline washing tower. Problems of the background technology are solved, so the butter inhibitor has the performance of oxidation resistance, polymerization inhibition, cleanness, dispersion, metallic ion passivation and a better inhibition effect. The butter inhibitor is prepared from the following raw materials of: 1 to 30 percent of antioxidant, 5 to 40 percent of polymerization retarder, 2 to 30 percent of dispersant, 5 to 25 percent of metallic ion passivating agent and the balance of solvent; and the butter inhibitor is prepared by heating, uniformly mixing and cooling the materials.

The invention discloses a method for preparing antarctic krill low-fluorine hydrolysis polypeptide. The method comprises the following steps of: performing enzymolysis on antarctic krill powder used as raw materials, heating and inactivating enzyme, centrifuging, adding calcium oxide at different concentration, defluorinating, uniformly stirring, performing centrifugal separation, adjusting a solution until the solution has a certain pH value, and performing spray drying on supernatant obtained through separation to obtain the antarctic krill low-fluorine hydrolysis polypeptide of which the fluorine content is 10 to 30ppm. The process is easy to operate, the obtained product has low fluorine content, the nutrition constituents are damaged slightly, consumed time is short, and the process is simple and efficient, and is an ideal method for removing fluorine from enzymatic hydrolysate. The method lays the foundation for developing the multi-functional antarctic krill low-fluorine polypeptide.

The present invention has an object to provide an external dermatological formulation having satisfactory blood flow-promoting effect, antiinflammatory effect, antibacterial effect, moisturizing effect, whitening effect, UV-absorbing effect, UV-scattering effect, antioxidant effect, hair growing effect, hair nourishing effect, emusifying effect, astringent effect, wrinkle-reducing effect, cell-activating effect and / or transdermal absorption-promoting effect with a satisfactory safety and skin feeling; The object is solved by providing an external dermatological formulation comprising a saccharide derivative of alpha , alpha -trehalose and one or more members selected from substances having any one of blood flow-promoting effect , antiinflammatory effect, antibacterial effect, moisturizing effect, whitening effect, UV-absorbing effect, UV-scattering effect, antioxidant effect, hair growing efect, hair nourishing effect, emulsifying effect, astringent effect, wrinkle-reducing effect, cell-activating effect and transdermal absorption-promoting effect.

The invention relates to a beverage and particularly discloses health-care dark tea. The health-care dark tea consists of the following raw materials in parts by weight: 5-8 parts of dark tea, 2 parts of buckwheat, 2-5 parts of lotus leaves, 2-5 parts of sweet potato leaves, 1 part of hawthorn, 3 parts of honeysuckle, 1 part of cassia seed, 1 part of bunge cherry seed, 3-6 parts of pumpkin, 2-4 parts of towel gourd, 2 parts of gingko, 3-5 parts of fructus momordicae, 1 part of mulberry leaf, 1 part of sophora japonica and 2-5 parts of boat-fruited sterculia. The health-care dark tea provided by the invention is easy to prepare and convenient to drink, keeps the warm aroma of dark tea while having the faint scent of the buckwheat and the honeysuckle, is good in taste, and also has a health care function. The dark tea has bactericidal, anti-inflammatory, diuretic, detoxification, anti-oxidation, anti-aging, anti-cancer, mutation-resistant, hypolipidemic, antihypertensive, carbohydrate metabolism improving, hpyerglycemic, and diabetes prevention and treatment functions, and by matching with the functions of promoting digestion and reducing excessive inflation of the hawthorn and the heat-clearing and detoxicating functions of the honeysuckle, the health care effect of the dark tea is remarkable.

The invention discloses a nutrition meal replacement composition, which is prepared from the following components in parts by weight: 10-300 parts of euglenophyta powder, 60-500 parts of quinoa powder, 100-400 parts of chia seed powder, 40-450 parts of collagen powder, 50-520 parts of a carbohydrate compound, 0-200 parts of vitamin and 0-500 parts of mineral substances. The invention further discloses a nutrition meal replacement refresher. The refresher is prepared from the nutrition meal replacement composition and a food additive. The nutrition meal replacement composition has the effects of regulating intestinal tracts, dual-directionally regulating blood glucose and providing abundant nutrient substances needed for a human body while losing weight and controlling the weight.

The invention relates to a natural active drug-polysaccharide targeted compound with antitumor activity and targeting property. A natural active drug is introduced onto a polysaccharide framework by chemical grafting, and physically mixed with a ligand distearoylphosphatidyl ethanolamine-polyethyleneglycol-anisoyl amine with targeted transmission capacity to form a natural active drug-polysaccharide targeted compound, and the natural active drug-polysaccharide targeted compound can be self-assembled in water to form a nano micelle. The method is characterized in that the natural active drug-polysaccharide targeted compound has targeted transmission capacity, enhances the tumor transfer efficiency of the preparation, reduces the untoward reaction and enhances the tolerance of the patient; the hydrophobic inner core formed by the hydrophobic group can physically wrap the antineoplastic drug, thereby obviously improving the water solubility of the antineoplastic drug; and the antineoplastic drug which is physically wrapped by the chemically coupled ursolic acid can implement combined treatment of tumors and lower the toxic or side effect. The preparation method is simple and easy to operate, has the advantage of higher yield, and can easily implement industrialization.

The invention relates to a nanofiber membrane and particularly relates to a novel composite nanofiber membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) dissolving any one of polyvinyl alcohol, polylactic acid and regenerated silk fibroin in an organic solvent to prepare a spinning solution with the mass fraction of 5-20 percent; (2) adding polyphenol substances to the spinning solution, and uniformly stirring to obtain a mixed spinning solution which accounts for 1-7 percent of the total mass of the polyphenol substances and the organic solvent, wherein the polyphenol substances are one or more of vegetable tannin, apple polyphenol and grape polyphenol; (3) carrying out ultrasonic treatment on the mixed spinning solution for 1-600 minutes; and (4) carrying out electrostatic spinning on the mixed spinning solution and collecting to obtain the required composite nanofiber membrane. After subjected to electrostatic spinning, the composite nanofiber membrane is smooth in surface, continuous and uniform, has the diameter of between 100nm and 800nm and can be applied to the fields of medical dressing, makeup facial masks, tea bags, controlled release of targeted drugs, food preservation and sewage purification.

The invention belongs to the food processing field, and particularly relates to a microwave treatment method before oil crop seeds are cold-pressed to produce oil. A method for pre-treating oil crop seeds by using microwave is characterized by comprising the following steps of: (1) adjusting the mass water content of the oil crop seeds to between 7 and 30 percent, and stirring the oil crop seeds uniformly; (2) uniformly spreading the oil crop seeds after the water content adjustment in a container, adjusting microwave power and microwave time, and performing microwave treatment on the oil crop seeds to obtain a final temperature of between 80 and 150 DEG C; and (3) spreading and cooling the oil crop seeds after the microwave treatment, and then performing cold pressing or peeling and cold pressing to produce oil. The method for treating the oil crop seeds is favorable for increasing the yield of cold-pressed oil and improving the quality of the cold-pressed oil.

The invention provides a purple corn beverage and a preparation method thereof. The major raw materials of the beverage are purple corn seeds and purple corn byproducts, fruit and vegetable pulp and flavorings are added to the beverage, and the beverage is treated by enzymolysis and acylation, so that cyanidin in the raw material purple corn is effectively extracted and stably stored in the beverage, thereby obtaining a purple corn beverage with rich cyanidin and unique taste.The scheme of the invention realizes the overall utilization of the purple corn plants; the cyanidin provides the function of health care, and the fruits, vegetables and flavorings not only feature the unique mouthfeel, but also boast various nutrient contents; and thus, the purple corn beverage is a novel health care beverage.

The invention discloses polygonatum sibiricum lycium barbarum tablet candy and a making method thereof. The polygonatum sibiricum lycium barbarum tablet candy is made of the following raw materials in parts by weight: 1.8-2.2 parts of xylitol, 18-22 parts of polygonatum sibiricum powder, 17-19 parts of lycium barbarum powder, 11-13 parts of poria cocos powder, 12-14 parts of Chinese yam powder, 11-13 parts of date powder, 10-12 parts of walnut powder, 9-11 parts of maca powder, 0.8-1.2 parts of maltodextrin and 0.8-1.2 parts of magnesium stearate. The invention further discloses the making method of the polygonatum sibiricum lycium barbarum tablet candy. The tablet candy is improvement and conditioning function on specific and non-specific immunity functions, and has the functions of preventing tumor, preventing oxidation, reducing the blood pressure, reducing cholesterol, invigorating stomach, enriching blood, moistening lung, reposing, nourishing the kidney and the like.

A high-temp self-lubricating non-Pb Cu-base composition has a chemical formula: Ni+C+Sn+Zn+MX+Fe+Cu, where MX is chosen from BN, Si3N4, SiC, Al2O3, TiN, TiC and Cr3 C2 and C is graphite and carbon fibres. It has anti-oxidizing, anti-corrosion and high-temp anti-wear characteristics.

The invention discloses a nutritional health food with the function of improving gastrointestinal function and a preparation method thereof. The nutritional health food can be used for regulating the intestinal flora to improve the gastrointestinal function from the aspects of increasing the probiotics type and quantity, increasing the probiotics nutrient substance, inhibiting the growth of harmful bacteria and enhancing the immunity of human body. According to the preparation method, probiotics powder such as lactobacillus plantarum is used as the main raw material, and edible fungi extracts and modified dietary fibers are scientifically compounded; saussurea involucrata culture extracts which are capable of remarkably enhancing the immunity of human body, resisting inflammatory and easing pain, and have the functions of oxidation resistance, radiation resistance and fatigue resistance are used, so that while the intestinal probiotics flora types is increased, the fix planting capacity of the endogenous probiotics and exogenous probiotics in the intestinal tracts of human body is remarkably enhanced, and fix planting time of the endogenous probiotics and exogenous probiotics in the intestinal tracts of human body is prolonged remarkably, the growth and reproduction of the harmful bacteria, particularly the Gram negative bacteria, in the intestinal tracts are effectively inhibited, the forming of the probiotic floras in the intestinal tracts is fully regulated and the nutritional health food which is good in probiotic property, capable of remarkably enhancing the immunity of human body and has the effect of improving the gastrointestinal function is prepared.

The invention relates to an enzymolytic lactoprotein ferrous complex, a microcapsule iron supplement and a preparation method thereof. In the preparation method, ferrous salt is complexed with an enzymolysis product of lactoprotein, which can improve solubility of iron salt under an alkalescent intestinal condition, improves absorptivity and availability of iron and ensures a safe and pollution-free preparation process; a proper coating material is adopted for microencapsulating the enzymolytic lactoprotein ferrous complex to prepare the microcapsule iron supplement agent of the enzymolytic lactoprotein ferrous complex; the iron supplement agent can mask self-odor of the ferrous salt, prevent the ferrous iron from oxidation, gradually release Fe under the alkalescent intestinal condition to ensure high biological absorptivity and biological availability of the Fe, and has no toxic and side effect; and the enzymolytic lactoprotein can prevent and treat iron-deficiency anemia, and has physiological functions of resisting oxidation, adjusting immunity, lowering blood pressure and the like.

The invention provides a special private care wet tissue for women. The private care wet tissue is produced through the following steps of: preparing a wet tissue stock solution from a nanosilver solution, water soluble vitamin E, hyaluronic acid, lauric acid modified superoxide dismutase, chamomile flower water, a hydrolyzed pearl solution, a saponin extract, 1,2-propylene glycol, isothiazolinone and deionized water at a certain ratio; evenly and dropwise adding the wet tissue stock solution on a nonwoven spunlace membrane; then hermetically packaging the nonwoven spunlace membrane. For use, the special private care wet tissue for women provided by the invention only needs to be put to flatly cover the private part of a woman, and after a short wait, the wet tissue is used for wiping the private part of the women back and forth a plurality of times. The private care wet tissue special for women provided by the invention is capable of sterilizing and disinfecting the private part of the woman, and also capable of moisturizing and cleaning the skin of the private part; the private care wet tissue has no any side effect and no any irritation.

The invention discloses a liquorice vegetable drink for improving a gastrointestinal function and enhancing the immunity and a preparation method of the liquorice vegetable drink. Herb of liquorice is used as a main raw material; liquorice concentrated juice, an edible mushroom extract, wolfberry fruit concentrated juice, modified dietary fibers, a corn bee pollen extract, pectin hydrolyzate and the like are scientifically compounded; the raw materials are treated by adopting a modern low-temperature and biological extraction technology, so that the content of effective components of the raw materials is greatly increased; various functional components are organically mixed, so that the optimal synergistic effect is achieved; meanwhile, by adoption of methods for thermal hybrid concentration of unstable concentrated liquid, jointed removal of cold and heat, sterile filtration, and the like, the flavor of the liquorice vegetable drink is greatly enhanced, and the expiration date of a product is prolonged; the liquorice vegetable drink with the effects of improving the gastrointestinal function and enhancing the whole immunity of a human body is prepared.

The invention discloses a method for preparing a novel aluminum-based composite lead dioxide-manganese dioxide anode for zinc electrodeposition, which is characterized by sequentially plating conductive coating, an alpha-PbO2-CeO2-TiO2 layer and a beta-PbO2-MnO2-WC-ZrO2 layer outside an aluminum matrix of a composite lead dioxide-manganese dioxide anode from inside to outside. The method comprises the following steps of: carrying out quenching, oil removal and sand blasting processing on the aluminum matrix; spraying the conductive coating on a matrix material; then carrying out alkaline composite plating on the alpha-PbO2-CeO2-TiO2 layer and carrying out acidic composite plating on the beta-PbO2-MnO2-WC-ZrO2 layer to obtain the composite lead dioxide-manganese dioxide anode. The aluminum-based composite lead dioxide-manganese dioxide anode manufactured by the process and method of the invention can obviously reduce the voltage of an electrode bath and energy consumption; and meanwhile, a plating layer and a matrix have strong binding force and small internal stress, and the service life of an electrode is long.

The invention provides a compound feed capable of improving the fatty liver and body colour of the marine fish. The compound feed comprises a premixed feed, a bile acid, curcumin and betaine, wherein the premixed feed comprises fish meal, soya bean meal, corn gluten meal, high protein flour, corn, shrimp shell meal, monocalcium phosphate, fish oil, liquid phosphatide, vitamin premixes, mineral premixes, and the like. Artificial marine-fish breeding experiments prove that the compound feed provided by the invention can meet the nutritional needs of marine-fish growth, effectively enhance the physique of the marine fish, improve the immunity of the marine fish, reduce the incidence of a fatty liver disease, and improve the body color of the marine fish, so that the body color of the marine fish is bright-colored and close to a wild natural color, thereby enhancing the quality of artificially cultured marine fish.

The invention discloses an ultra-low-capacity liquid preparation containing thiamethoxam, which uses thiamethoxam, or the compound of thiamethoxam and active component II as the active ingredient, and supplements the rest to 100% with auxiliary agents and solvents. Low-volume liquid preparation; active component II is beta-cypermethrin, pymetrozine, chlorantraniliprole, flubendiamide, tofenpyrad, azadirachtin, buprofezin, abamectin, and emamectin Any one of plain benzoate and diazinon. The invention can be used to control crop pests such as rice planthopper, rice leaf roller, brown planthopper, white-backed planthopper, striatellus striatellus, stem borer and rice thrips, and has the advantages of convenient processing, water saving, high work efficiency and good drug effect , long-lasting, synergistic and other advantages.

The invention discloses a natural rubber liquid slurry containing chitosan / sericin and a preparation method thereof, and belongs to the field of high polymer chemistry. The invention is characterized in that the preparation method comprises the following steps: respectively preparing a chitosan water solution and a sericin water solution, mixing the two solution, and regulating the pH value of the mixture to 9-11 by using ammonia water and a citric acid solution; and adding the obtained chitosan / sericin mixed solution to a natural latex slurry, adding a laurate surfactant, and mechanically stirring the mixture uniformly to obtain the natural rubber liquid slurry containing chitosan / sericin. The invention has the advantages that the chitosan has the functions of adsorbing water soluble proteins in the latex, inhibiting bacteria and viruses from breeding, and the like; and the sericin has the functions of oxidation resistance, allergy resistance, hydrophilia, oil resistance and the like, thereby enhancing the emulsion phase stability and the preservation effect of the natural latex. In particular, the product obtained by using the method overcomes the defects of short service life, easy aging and sticking, poor oil resistance, initiation of protein allergy and the like in the traditional natural latex product.

The invention discloses a health food capable of improving intestinal floras and a preparation method of the health food. The intestinal floras are adjusted on a plurality of aspects of increasing the probiotics variety and quantity, adding probiotic nutrient substances, inhibiting the harmful bacterial growth and increasing the human immunity, so that the gastrointestinal functions are improved. With probiotic powder such as lactobacillus plantarum as a main raw material, an edible mushroom extract is scientifically compounded, and dietary fibers are modified, so that the human immunity can be significantly improved; a saussurea involucrate culture extract has the efficacies of resisting inflammation, relieving pain, and resisting oxidation, radiation and fatigue; the variety of the intestinal beneficial bacteria floras is increased; the field planting capacity of endogenous and exogenous probiotics in human intestinal tracts is significantly enhanced and the field planting time of endogenous and exogenous probiotics in human intestinal tracts is significantly prolonged; the growth and the reproduction of intestinal harmful bacteria, especially gram negative bacteria, are effectively inhibited; the components of the intestinal beneficial bacteria floras are fully adjusted; and the health food which is high in probiotic property, and is capable of significantly improving the human immunity and improving the intestinal floras is prepared.