784 results about "Green teas" patented technology

The invention relates to the technical field of food, and particularly discloses a compound prebiotics embedded probiotic microcapsule and a preparation method and application thereof.The green tea leaves serve as main raw materials, water extraction is conducted on the green tea leaves, meanwhile, ultrasonic-assisted treatment is adopted, active ingredients in the green tea leaves can be more effectively released, the extraction time is shortened, and the content of probiotics in the green tea leaves is increased; the extraction rate of active ingredients in the green tea leaves is improved; then, lactobacillus acidophilus is adopted to ferment the extract liquid, so that the green tea fermentation liquid contains more antioxidant active ingredients, combined polyphenol in the extract liquid can release micromolecular polyphenol in the fermentation process, the content of substances such as flavone and polyphenol in the green tea fermentation liquid is increased, and the antioxidant activity is further improved; and then the modified dietary fiber is used as a main wall material of the microcapsule to embed the green tea fermentation liquor and the probiotics, so that the stability of active substances and the probiotics in the green tea fermentation liquor is improved, and the green tea fermentation liquor can play a role in protection and slow release in the simulated digestion process.

The invention relates to the technical field of nutritional supplements. A traditional fat reducing method mainly comprises dieting, high-intensity exercise, medicine weight losing and the like. However, dieting may lead to malnutrition; high-intensity sports are difficult to insist, and sports injury is easily caused; in order to solve the technical problems, the invention discloses a fat-reducing nutritional composition capable of improving metabolism, and the fat-reducing nutritional composition can be used for solving the technical problems of severe side effects such as tachycardia, insomnia and the like caused by medicine weight loss. The composition comprises the following components in parts by weight: 13-21 parts of a bitter gourd extract, 15-31 parts of a garcinia cambogia extract, 13-17 parts of oat fibers, 17-23 parts of whey protein powder, 7-9 parts of linseed oil, 6-14 parts of a green tea extract, 9-15 parts of a calcium supplement and 15-19 parts of a purple perilla seed extract, and can provide energy for a user, supplement immune globulin, lactoferrin and a calcium source, improve the immunity of the user and improve the immunity of the user. The body metabolism level and immunocompetence are improved, absorption of fat in digestive tracts can be effectively inhibited, storage of fat in the body is reduced, fat consumption is promoted, and the fat reducing effect is achieved.

The invention relates to the technical field of cosmetics, in particular to a nanoscale repair composition, a nanoscale repair cosmetic and a preparation method and application of the nanoscale repair composition and the nanoscale repair cosmetic. The invention discloses a nanoscale repairing composition. The traditional Chinese medicine composition is prepared from the following raw material components in parts by weight: 4 to 6 parts of herba centellae extract, 2 to 4 parts of chamomile extract, 2 to 4 parts of radix ginseng extract, 1 to 3 parts of rhizoma curcumae longae extract, 3 to 5 parts of aloe extract, 1 to 3 parts of oat extract, 1 to 2 parts of liquorice root extract, 0.3 to 0.7 part of green tea extract, 0.5 to 1.5 parts of radix salviae miltiorrhizae extract, 0.5 to 1.5 parts of radix angelicae sinensis extract and 0.5 to 1.5 parts of ganoderma atrum extract. , 0.5 to 1.5 parts of radix astragali seu hedysari extract, 0.3 to 0.7 part of rhizoma polygoni cuspidati extract, and 0.3 to 0.7 part of onion extract. The nanoscale repairing composition and the nanoscale repairing cosmetic disclosed by the invention can improve the moisture content of skin, reduce moisture loss and redness of the skin, accelerate healing of injured skin, effectively relieve inflammatory response and promote collagen regeneration of the skin.

The invention belongs to the technical field of biological fermentation and cosmetics, and particularly relates to a cortex magnoliae officinalis fermented product with oil-controlling and dandruff-removing effects as well as preparation and application of the cortex magnoliae officinalis fermented product. The preparation method comprises the following steps: performing ethanol ultrasonic extraction on officinal magnolia bark powder to obtain an officinal magnolia bark extract; adding mangnolia officinalis, honeysuckle, green tea and pericarpium citri reticulatae powder into pure water, performing enzymolysis treatment by adopting cellulase and pectinase, then adding a carbon source, prebiotics and inorganic salt, performing high-temperature sterilization, performing cooling, then adding a mangnolia officinalis extract, and performing uniform mixing so as to obtain a fermentation culture medium; the method comprises the following steps: inoculating an aspergillus seed solution and a saccharomyces cerevisiae seed solution into a fermentation culture medium for first-step fermentation, heating and inactivating, cooling, inoculating fruit wine yeast for second-step fermentation, and sterilizing at high temperature, cooling and filtering after fermentation to obtain filtrate which is the cortex magnoliae officinalis fermented product with the effects of controlling oil and removing dandruff. According to the preparation method, enzymolysis and fermentation technologies are combined, and the honeysuckle, the green tea and the pericarpium citri reticulatae are fermented together, so that the antibacterial, anti-dandruff and oil-control effects of the mangnolia officinalis can be synergistically improved.

The invention discloses a multi-mode Longjing tea leaf intelligent grading method integrating five-dimensional evaluation scales. The method comprises the following steps: collecting Longjing tea leaf samples; the method comprises the following steps: collecting an appearance picture data set, a soup color picture data set, a leaf bottom picture data set, an aroma data set and a taste data set of Longjing tea leaf samples, performing preprocessing, and dividing the data sets into a training set, a test set and a verification set; constructing a multi-modal Longjing tea leaf grading model, and training, testing and verifying the multi-modal Longjing tea leaf grading model through the training set, the test set and the verification set to obtain an optimal multi-modal Longjing tea leaf grading model; and grading the Longjing tea leaves through the optimal multi-mode Longjing tea leaf grading model. According to the method, the intelligent grading model is constructed by using the digital feature vectors through a multi-modal fusion and contrast learning method, and finally, a visual green tea quality evaluation system is formed, so that the aims of improving the evaluation consistency and reducing human subjective errors are achieved.

The invention provides a fat-reducing composition based on an agaricus bisporus extract as well as a preparation method and application of the fat-reducing composition, and belongs to the technical field of nutrition and health care. The fat-reducing composition comprises the following raw materials in parts by weight: 10-30 parts of an agaricus bisporus extract, 5-15 parts of a green tea extract, 5-15 parts of bitter gourd peptide, 3-10 parts of seaweed meal and 10-30 parts of resistant dextrin. The agaricus bisporus extract disclosed by the invention can regulate intestinal flora and promote fat metabolism; tea polyphenol in the green tea extract can inhibit fat synthesis and promote fat oxidation; momordica charantia peptide has an obvious hypoglycemic effect; the seaweed meal (containing fucoxanthin) has the effects of burning fat cells and eliminating fat accumulation; the resistant dextrin is used as dietary fiber, so that satiety is increased, and caloric intake is reduced. The raw materials cooperate with each other, so that the composition has better fat-reducing and weight-reducing effects, and the total cholesterol and triglyceride levels are reduced.

The invention provides a composition and application thereof in preparation of a fat-reducing product. The composition comprises ginger and green tea composite micro-capsule powder, raspberry ketone, mango concentrated powder, citrus fruit powder and seaweed powder. The composition comprises the following components in parts by weight: 15-22 parts of fresh ginger and green tea composite microcapsule powder, 4-8 parts of mango concentrated powder, 1-5 parts of raspberry ketone, 1-5 parts of citrus fruit powder and 1-5 parts of seaweed powder. The method can solve the problem of large side effects of fat-reducing products in the prior art, and is suitable for the field of functional foods.

The invention discloses a preparation method of a composition for dispelling effects of alcohol and protecting liver, and belongs to the technical field of traditional Chinese medicines. The liver protection composition is prepared from the following raw materials: gynostemma pentaphyllum powder, honeysuckle flower powder, hawthorn fruit powder, green tea powder, lotus leaf powder, cassia seed powder and folium sennae powder. The preparation method of the liver protection composition comprises the following steps: enzymolysis, fermentation and freeze-drying. According to the invention, through an extraction method of firstly performing enzymolysis and then performing fermentation, various different types of active effective components are reserved as far as possible. Tests prove that the finally obtained composition has a statistical therapeutic effect on alcoholic liver injury.

The invention relates to the technical field of conditioners, in particular to a conditioner for improving crop stress resistance and a preparation method thereof, and the conditioner comprises the following raw materials: plant hormones, trehalose, humic acid, a complex microbial inoculant, modified nano sodium alginate, modified nano zinc oxide, lactic acid, a green tea extract and a licorice extract. The modified nano-sodium alginate, the modified nano-zinc oxide and the lactic acid play a role through a synergistic effect, the modified nano-sodium alginate and nutrient substances form a modified nano-sodium alginate gel compound through physical adsorption and chemical effects, stress-resistant peptides on the surface of the compound directly activate immune systems of crops, synthesis of stress-resistant proteins is promoted, and the stress resistance of the crops is improved. The modified nano-zinc oxide enhances the absorption of nutrient substances by crop root cells, assists the activation of crop immune systems, and synergistically enhances the disease resistance and stress resistance of crops, and the lactic acid effectively stabilizes the pH value of the conditioner, relieves the oxidation pressure of crops under adverse conditions, and enhances the physiological stability of crops.

The invention discloses eye protection liquid and a preparation method thereof, and relates to the technical field of eye protection liquid, and the eye protection liquid is prepared from the following components in percentage by mass: 1.0%-5.0% of golden emperor chrysanthemum hydrolat, 0.05%-0.5% of golden emperor chrysanthemum extracting solution, 1.0%-5.0% of butterflybush flower hydrolat, 0.05%-0.5% of butterflybush flower extracting solution, 0.05%-1.0% of green tea extracting solution, 0.5%-1.0% of sodium chloride, 0.1%-2.0% of buffer pair and the balance of ultrapure water. The preparation method comprises the following steps: preparing golden chrysanthemum hydrolat and extracting solution, butterflybush flower hydrolat and extracting solution and green tea extracting solution; dissolving the buffer pair and sodium chloride in ultrapure water to obtain a buffer solution; adding the golden imperial chrysanthemum hydrolat and extracting solution, the butterflybush flower hydrolat and extracting solution and the green tea extracting solution into the buffer solution, and uniformly mixing; measuring and adjusting the osmotic pressure and the pH value of the solution; and filtering, sterilizing and packaging. The eye protection liquid provided by the invention can be used for nourishing eyes in an atomization manner, is mild in components, has a relatively lasting soothing effect on the eyes, and can be used for effectively relieving eye fatigue.

The invention relates to the field of skincare products, and particularly discloses skincare gel loaded with ganoderma lucidum exosome and a preparation method of the skincare gel. The skin care gel loaded with the lucid ganoderma exosome is prepared from the following raw materials in parts by weight: 20 to 40 parts of hydrogel matrix, 2 to 4 parts of lucid ganoderma exosome nanoparticles, 2 to 6 parts of niobium carbide nanosheets, 1 to 3 parts of nicotinamide, 0.1 to 2 parts of phenethyl resorcinol and 0.1 to 3 parts of green tea extract, the Mailing exosome nanoparticles are of a core-shell structure, a core layer comprises Mailing exosome and papain in a mass ratio of 1: (0.1-0.2), and a shell layer comprises a polylactic acid-glycolic acid copolymer and a penetration enhancer in a mass ratio of 1: (0.1-0.3). The skin-care gel provided by the invention has remarkable whitening, moisturizing and skin brightening effects.

The invention relates to the technical field of heavy metal pollution treatment, and particularly discloses a biochar material and method for adsorbing heavy metals in wormcast. The biochar material for adsorbing the heavy metals in the wormcast adopts waste green tea residues as a raw material, and after being soaked in a phosphoric acid solution with the mass concentration of 38-42%, the biochar material is subjected to heat treatment at the temperature of 540-560 DEG C to obtain P-BC powder. The P-BC powder is soaked in a metal salt solution with the total metal ion concentration being 0.8-1.2 mol / L, and under the action of a precipitator, the LDH-coated P-BC material is obtained. The LDH-coated P-BC material is mixed with a ferric chloride hexahydrate solution and a NaBH4 aqueous solution for reaction to obtain the biochar material for adsorbing the heavy metals in the wormcast, so that the fixing and stabilizing effects of the biochar material on the heavy metals in the wormcast are improved.

The invention provides an extraction process and application of tea leaves, and particularly relates to the technical field of cosmetics. The extraction process of the tea leaves comprises the following steps: extracting raw dark green tea leaves with a color fixative, decolorizing with a clarifying agent, activated carbon and a clarifying agent in sequence, filtering, and finely filtering to obtain the tea leaf extract. The extraction process provided by the invention solves the problems of easy oxidation of active ingredients, many impurities, poor storage stability and the like in the traditional tea extraction process, can efficiently retain the active ingredients such as tea polyphenol and the like, and the extract is high in purity and good in stability and can be used in anti-aging and anti-inflammatory cosmetics. The tea leaf extract and the artemia extract have a remarkable synergistic effect in the anti-oxidation and anti-inflammatory aspects, can be used in anti-aging and anti-inflammatory cosmetics, and have a good application prospect.

The invention discloses a fresh-cut eggplant anti-browning and fresh-keeping method based on composite plant extract synergistic heat treatment, and the method comprises the following steps: S1, preparing a composite plant extract comprising the following components: a green tea extract, a rosemary extract, a licorice extract, trehalose, chitosan oligosaccharide, curcumin microcapsules, soybean lecithin, Tween, and the balance of pure water; s2, the fresh-cut eggplants are soaked in a composite plant extracting solution, gradient heat treatment is carried out, and the gradient heat treatment comprises the following three stages of a heat activation permeation stage, a cooling stabilization stage and a cold shock fixation stage; and S3, slightly draining the treated fresh-cut eggplants, and packaging with a preservative film. Through the synergistic effect of various plant extracts and an elaborately-designed gradient heat treatment process, effective inhibition of browning of the fresh-cut eggplants is achieved, the fresh-keeping period is remarkably prolonged, good quality can be kept for 10 days or above under the condition of 4 + / -1 DEG C, and the fresh-cut eggplant fresh-keeping method has a good application prospect.

The invention provides microcapsule seasoning powder containing active plant components for cats and a preparation method of the microcapsule seasoning powder, the microcapsule seasoning powder comprises a double-layer embedding system, and the microcapsule seasoning powder comprises the following raw material components in percentage by weight: 10-14 wt% of a composite core material, 32-36 wt% of a multifunctional food calling base material, 35-39 wt% of the double-layer embedding system and 14-16 wt% of functional auxiliary materials; the composite core material is prepared by compounding a mint extract, a green tea extract, a chicory extract, a mulberry leaf extract and a hawthorn extract according to the mass ratio of (1.8-4.5): (1.2-3): (0.8-1.5): (0.5-1.2): (1-2). The cat food has a dual-stage targeting effect of low release in the stomach and high release in the intestinal tract, has high palatability, has the effects of promoting the health of the intestinal tract, improving metabolism and resisting aging synergistically, is long-acting and stable, and can be suitable for various types of functional foods for cats.

Provided is a transfersome cosmetic composition including: a Matricaria flower extract, a Centella asiatica extract, an Arnica montana flower extract, a Scutellaria baicalensis extract, a Paeonia suffruticosa root extract, an aloe vera leaf extract, a Saccharina japonica extract, a licorice root extract, a lactobacillus lysate formed by fermenting strains belonging the lactobacillus genus, a rice bran fermentation filtrate formed by fermenting rice bran using a first composite strain including strains belonging to the bacillus genus, strains belonging to the lactobacillus genus, and yeast, a green tea fermentation extract formed by fermenting green tea using a second composite strain including strains belonging to the Aspergillus genus and strains belonging to the Lactobacillus genus, a grape seed oil, an jojoba seed oil, hydroxyacetophenone, Bifidobacterium, arginine, betaine, trehalose, sodium hyaluronate, hydrolyzed elastin, Ceramide NP, resveratrol, Genistein, tocopheryl acetate, glycerin, and purified water.

The invention discloses cat litter added with aromatic plant raw materials and a preparation method of the cat litter. The invention belongs to the technical field of pet supplies. Aromatic plant raw materials comprise one or a combination of more of the following components in parts by weight: catnip, silver stems, chamomile, green tea leaves, rosemary, lemon grass, orange peel, lavender, Chinese pine needles, cape jasmine flowers, roses and jasmine flowers. Natural aromatic plant raw materials are used, artificial essence is not needed, and the smell is more natural and lasting; meanwhile, multiple functions of absorbing odor, resisting bacteria, expelling parasites and the like are realized; the method can enhance user experience, and is suitable for pet families pursuing natural environmental protection; meanwhile, the preparation method is non-toxic, degradable and friendly in process; and the method has obvious market differentiation advantages.

The invention relates to the technical field of functional fibers, and particularly discloses a chinlon BI fiber with an anti-allergy function prepared by using a molecular nest technology, which is prepared from the following raw materials in parts by weight: 100-300 parts of chinlon chips, 15-30 parts of molecular nests containing plant active ingredients and 1-7 parts of a dispersing agent, the molecular nest containing the plant active ingredients is obtained by loading a calendula extract, a liquorice extract and a green tea extract on sulfonated mesoporous silica, and the sulfonated mesoporous silica can stably adsorb the plant active ingredients, so that carbonization inactivation caused by high temperature of spinning due to direct addition of natural active ingredients is avoided; therefore, the chinlon BI fiber disclosed by the invention has an anti-allergy function, and is remarkable in antibacterial and antioxidant activity and wide in market application prospect.

The invention provides hydrogel with a wound healing function and a preparation method thereof.The hydrogel is prepared from, by mass, 50-70 parts of basic gel matrix, 20-30 parts of natural medicine extract and 8-10 parts of bioactive ingredients; the natural medicine extract comprises superfine pearl powder, a semen cassiae extract, an aloe extract, a cortex phellodendri extract, a honeysuckle flower extract, a dandelion extract, a centipede extract, a fructus forsythiae extract and a green tea extract; the bioactive components comprise epidermal growth factors, heparin sodium, mussel mucin and nano-silver ions; on the basis of a commercially available compound cortex phellodendri liniment, further research and development are carried out, the superfine pearl powder, the semen cassiae extract, the aloe extract, the green tea extract and other natural medicine components are added, the optimal proportion is selected, and the basic gel matrix, the bioactive components and the like are combined, so that the wound healing rate, the antibacterial rate and the water holding rate of the hydrogel are remarkably improved finally.

The invention discloses a processing method of high-mountain cloud and mist high-aroma green tea. The processing method comprises the following steps: picking fresh leaves, and checking and accepting; performing tedding; performing primary fixation; spreading and airing for the first time; moisture regaining; rolling: rolling according to the principle of light-heavy-light; performing secondary fixation; spreading and airing for the second time; shaping: performing shaping and strip tidying on the tea leaves subjected to secondary spreading and airing; drying: the moisture content of the dried tea leaves is less than or equal to 5wt%; and inspecting, warehousing and packaging. The technical problems that when existing high mountain cloud and mist green tea is processed, mechanical rolling is not in place, tea strips are not tight and knotted, and a large amount of tea hair is left, so that the tea floats up seriously in the brewing process, and the fragment rate in the tea processing process is high can be solved.

The invention discloses an anti-decayed tooth toothpaste containing sugarcane leaf polysaccharide and a preparation method thereof. The toothpaste is prepared from the following raw materials in parts by weight: 3-6 parts of sugarcane leaf polysaccharide, 0.5-0.8 part of propolis extract, 0.05-0.09 part of antibacterial peptide, 2-5 parts of green tea extract, 80-100 parts of auxiliaries, 5-10 parts of deionized water and 2-4 parts of natural tea tree oil. The preparation method comprises the following steps: uniformly mixing all the raw materials, heating and stirring, and carrying out vacuum degassing to prepare the paste. The toothpaste disclosed by the invention can be used for efficiently inhibiting / killing oral pathogenic bacteria, maintaining the micro-ecological steady state of oral health and reducing erosion of acid substances to enamel, has excellent effects in the aspects of protecting gingiva, resisting inflammation, preventing bacterial breeding and resisting decayed teeth, and keeps lasting efficacy.

The utility model relates to the technical field of green tea processing, in particular to green tea processing grinding equipment which comprises a grinding cylinder, a dust collection assembly is arranged at the upper end of the side wall of the grinding cylinder, and a dust particle cleaning assembly is arranged in the dust collection assembly and the grinding cylinder jointly. The dust particle cleaning assembly comprises a driving groove disc fixedly installed on the shaft wall of the driving shaft, embedded balls are slidably installed in the edge of the driving groove disc, a communicating rod is slidably installed in the assembling groove, a cleaning frame is fixedly installed at the end, away from the driving groove disc, of the communicating rod, and a brush is fixedly installed at the end, away from the communicating rod, of the cleaning frame. The embedded balls slide in the groove rings with different depths in the driving groove disc, the communicating rod can drive the cleaning frame to move, then the filter screen can be cleaned all the time in the grinding process, the situation that dust and fine particles attached to the filter screen cannot be cleaned in time is avoided, and the service life of the filter screen is prolonged. Therefore, the overall dust collection effect and the filtering effect are influenced.

The invention belongs to the technical field of cosmetics, and particularly relates to a silk fibroin aggregate-based dispersed organic active substance as well as a preparation method and application thereof. The preparation method of the silk fibroin aggregate-based dispersed organic active substance comprises the following steps: (1) dissolving an organic active substance in a first solvent to obtain a first solution; dissolving the silk fibroin aggregate in a second solvent to obtain a second solution; (2) slowly adding the second solution into the first solution, mixing and homogenizing to obtain a silk fibroin aggregate-based dispersed organic active substance; wherein the silk fibroin aggregate is prepared by mixing a silk fibroin aqueous solution and alcohol. The silk fibroin aggregate-based dispersed organic active substance prepared by the preparation method can improve the bioavailability of the organic active substance (such as vitamin C, hyaluronic acid, coenzyme Q10, nicotinamide, arbutin, kojic acid, licorice extract, centella extract, chamomile extract or green tea extract) in cosmetics.

The present invention relates to the technical field of green tea processing, and discloses a pre-treatment device for green tea killing, including two groups of installation support plates. At both ends of the bottoms of the two groups of installation support plates, support legs are provided. At both ends of the sides where the two groups of installation support plates are close to each other, a transmission shaft C and a transmission shaft D that penetrate through the two groups of installation support plates are provided. A reciprocating displacement member is arranged on the outer sides of the two groups of transmission shafts C and D; in the present invention, the rotation of the transmission shaft C drives the cylindrical displacement groove to rotate. Through the rotation of the cylindrical displacement groove, the guide rod inside it follows a horizontal reciprocating displacement, and then drives the screening mesh plate at the top of the guide rod to perform a horizontal reciprocating displacement, so as to screen the fresh leaves on the top of the screening mesh plate, remove the impurities in the fresh leaves, and at the same time cooperate with the airflow ejected from the exhaust port to evaporate the moisture on the surface of the green tea fresh leaves, improving the production efficiency of green tea.

The invention discloses a tea group fine manipulation degree identification method based on MobileNet V3, and the method comprises the steps: obtaining a tea group image, obtaining a tea fine manipulation data set through data enhancement, and dividing the tea fine manipulation data set into a training set, a verification set and a test set; preprocessing the group image to segment brown spots and red edging features in a fine manipulation stage; the method comprises the following steps of: improving a MobileNet V3-large model: adding an adaptive residual branch in a Bcheck module, and using a GELU activation function and an improved CA attention mechanism; the improved MobileNet V3-large model is trained, and a final improved MobileNet V3-large model is obtained through the training of the improved MobileNet V3-large model and the training of the improved MobileNet V3-large model; and predicting and outputting identification results of the color, the form, the brown spots and the red edges of the tea leaves by utilizing the final improved MobileNet V3-large model. According to the invention, intelligent judgment of the tieguanyin green-making degree is realized.

The invention discloses a preparation method of jade sugarcane juice, and relates to the technical field of food processing, the method comprises the following steps: S1, juicing and ozone sterilization; s2, adding a green color fixative for color protection treatment; s3, adding a clarifying agent; s4, performing non-thermal sterilization treatment; and S5, packaging and storing. The green color fixative is prepared from the following raw materials in percentage by weight: 10 to 20 percent of organic acid, 1 to 3 percent of green tea extract, 0.5 to 1 percent of apple polyphenol, 0.3 to 1 percent of sodium sulfite and the balance of water. The method can effectively sterilize and maintain the quality of the sugarcane juice, ensures that the original color, texture and flavor are not lost in long-time storage, and the prepared sugarcane juice is clear and bright in jade.

To provide a production method of green tea leaves capable of being used for preparation of a green tea extract in which, odd taste and / or roughness of a taste are suppressed even being extracted at a high temperature, a green tea extract extracted from the green tea leaves, and a beverage or the like including the green tea extract.SOLUTION: There is provided a production method of green tea leaves including a step A for bringing raw material tea leaves into contact with raw tea leaves for one hour or more under presence of a solvent, for acquiring green tea leaves of the present invention.SELECTED DRAWING: None

The invention discloses a feed additive for improving the immunity of dairy cows in the perinatal period, and belongs to the technical field of nutritional feeds, the feed additive comprises the following components: nutritional additives: 500-1000 IU / kg of vitamin E, 0.1-0.3 mg / kg of selenium, 30-50 mg / kg of zinc, 10-20 mg / kg of copper, 20-40 mg / kg of manganese, 0.95-1.1 mmol / L of calcium and 10-20 mL / kg of linseed oil; and the non-nutritional additive comprises the following components: 1 to 5 * 10 < 9 > CFU / kg of lactic acid bacteria, 5 to 10 g / kg of prebiotics, 50 to 100 mg / kg of rosemary extract, 50 to 100 mg / kg of green tea extract and 50 to 100 mg / kg of yeast extract. Vitamin E, selenium, zinc, copper, manganese and other nutrients in the nutritional additive can enhance the oxidation resistance and immune function of dairy cows, so that various diseases including oxidative stress related diseases, infectious diseases, reproductive disorders, skeleton diseases and the like can be prevented.

The present invention relates to the technical field of active ingredient extraction, and specifically discloses a yellow green tea polysaccharide and its extraction method and application, comprising the following steps: S1. defatting and decolorizing yellow green tea powder and drying for standby use; S2. mixing tea powder with an extracting solution in an ultrasonic device to obtain an extraction mixture, and then adding a complex enzyme to the extraction mixture for extraction to obtain a first mixture; S3. filtering the first mixture, taking the supernatant, and concentrating it by rotary evaporation to obtain a second mixture; S4. precipitating the second mixture with alcohol, centrifuging, and re-dissolving the precipitate to obtain a third mixture; S5. adding sevage reagent to the third mixture to obtain a deproteinized mixture, and then rotary evaporating to obtain a concentrated solution; S6, dialyzing and drying the concentrated solution to obtain yellow green tea polysaccharide. In the present invention, the enzymatic extraction step and the ultrasonic extraction step are carried out simultaneously. By adjusting the relevant processing parameters, the two extraction methods can be coordinated with each other, so that the extraction efficiency of the yellow green tea polysaccharide is greatly improved.

The invention belongs to the technical field of tea making, and particularly relates to functional dark green tea with a blood sugar control effect and a preparation method thereof.The functional dark green tea with the blood sugar control effect is prepared from, by weight, 6-8.5 parts of raw dark green tea, 1.5-4 parts of traditional Chinese medicine composition, 1.5 parts of 0.1% cellulase solution and 1.5 parts of 0.1% pectinase solution, the mulberry leaves, the rhizoma polygonati, the ginkgo kernels and other medicinal and edible traditional Chinese medicines are subjected to dynamic gradient steaming and stir-frying, and are combined with the dark green tea by utilizing directional enzymolysis and metabolism regulation, so that the problems of low component dissolution rate, dispersed effect and insufficient safety of a traditional tea medicine compound product are solved, and the dark green tea has the flavor and health-care function of the dark green tea.