46 results about "Plantago asiatica extract" patented technology

The invention discloses a double-formula medicine used for treating insomnia, and a preparation method thereof. With existing insomnia-treating medicines, a simultaneous kidney invigorating, liver soothing and tranquilizing function can hardly be achieved. The medicine assists in solving the problem. With the medicine, various depressive insomnias can be treated with multiple targets, multiple links and multiple approaches. The double-formula medicine provided by the invention is composed by a formula A and a formula B. The formula A is composed of a Tiantai radix linderae extract, a corydalis tuber extract, panax notoginseng powder, a Chinese clematis root and rhizome extract, black common monkshood daughter root, an eucommia extract, and the like. The formula B is composed of a white mulberry root-bark extract, a psoralea corylifolia extract, a dipsacus asper extract, a silktree albizia bark extract, an oriental waterplantain tuber extract, an asiatic plantain seed extract, a Chinese arborvilae seed extract, a thinleaf milkwort root extract, a spine date seed extract, a common cnidium fruit extract, and the like. The invention also provides a preparation method of the double-formula medicine. With the method, various depressive insomnias can be treated with multiple targets, multiple links and multiple approaches. The medicine is advantaged in safe treatment, no toxic or side effect, fast effect, and thorough treatment.

The invention relates to a preparation method of an immunosuppressive activity plantago seed extractive and applications thereof. The preparation method comprises the following steps of: degreasing raw materials and obtaining crude extractive through water extraction and alcohol precipitation; deproteinizing and depigmenting the crude extractie through dialysis and ion exchange chromatography; and removing micromolecular chemical compositions to prepare the plantago seed extractive with higher purity. A total polysaccharide content in the inventive immunosuppressive activity plantago seed extractive accounts more than 72% of the extractive by weight. Shown by a great amount of pharmacological experiments, the plantago seed extractive has immunosuppressive activity, can be used for preparing immune inhibitors in various preparation forms or used as a raw material medicine for preparing other immunosuppressive medicines and used for medical purposes in treating diseases related to immune inflammatory injuries, such as nephritis, cystitis, prostatitis, urethritis, edema and eye diseases, such as uveitis, interstitial keratitis, corneal transplantation rejection, and the like.

The invention discloses a Plantain seed extract and application thereof. The Plantain seed extract is acquired by reflux extraction of Plantain seed with 2-6 volume times of 60-90vol% ethanol aqueous solution 2-6 times. The Plantain seed extract contains acteoside, isoacteoside, geniposidic acid, ferulic acid, and Cheqiansu A and Cheqiansu B. In-vivo experiments show that the Plantain seed extract provided by the invention can promote glucose consumption and has lower toxicity to cells; and simultaneously in-vitro experiments show that the Plantain seed extract can significantly increase serum insulin level and reduce fasting blood-glucose level, presents good medicinal value in treatment of diabetes; therefore, the Plantain seed extract can be used in the preparation of pharmaceutical medicaments for treating diabetes singly or together with a pharmaceutically acceptable composition composed of a drug carrier.

The invention relates to the technical field of natural medicaments, and in particular relates to a method for extracting iridoid active ingredients from plantain seeds. In the method provided by the invention, a plantain seed extract is obtained through adopting a solvent for extraction and refining with a chromatographic process or a combination of chromatography and a solvent extraction method. The prepared plantain seed extract contains more than 50% by weight of iridoid active ingredients. The method is simple and has an industrial application prospect.

The invention discloses an anti-aging skincare composition which is prepared from the following raw materials in percentage by weight: 20.0%-35.0% of a hydrolysis mirabalan extract, 20.0%-30.0% of a semen plantaginis extract, 10.0%-15.0% of a radix scutellariae extract, 1.0%-5.0% of collagen, 0.01%-0.05% of glutathione and the balance of deionized water. The preparation method of the anti-aging skincare composition comprises the following steps: (1) mixing deionized water evenly in percentage by weight, and heating to 45-55 DEG C; (2) adding the hydrolysis mirabalan extract, semen plantaginis extract, radix scutellariae extract, collagen and glutathione to the deionized water in the step 1), and further stirring at 45-55 DEG C at the speed of 40r / min for 10-20 minutes until mixing evenly; and (3) cooling to room temperature and adjusting the pH value to 5.5-7.0, so as to obtain the composition. The anti-aging skincare composition is prepared by compounding a plurality of anti-aging components; skin ageing can be significantly delayed; and the anti-aging skincare composition has certain anti-wrinkle and moisturizing effects.

The invention discloses Dendrobium officinale toothpaste and a preparation method thereof. raw materials of the toothpaste contain: a Dendrobium officinale extract, a honeysuckle extract, a Houttuynia Cordata Thunb extract, a semen plantaginis extract, a herba eupatorii extract, a acanthopanax root extract, a Saxifraga stolonifera extract, a Rumex.japonicus Houtt extract, a Cortex Phellodendri extract, a sarcandra glaber extract, garlic oil, nano-hydroxyapatite, montmorillonoid, silica, pearl powder, propanediol, hydroxyethyl cellulose, sodium lauroyl sarcosinate, cocamidopropyl betaine, tea polysaccharide, xylitol, stevioside, spearmint essence, magnolol, mirabilitum praeparatum, walnut oil, taurine and water. The Dendrobium officinale toothpaste has good antibacterial and anti-inflammation effects, has good effects on gingivitis, gingival dleeding and dental ulcer, and can effectively remove dental plaque. After use of the toothpaste, the mouth is freshened and has no odor.

The present invention discloses an anti-aging essence and a preparation method thereof and relates to the field of skin care products. The anti-aging essence disclosed by the present invention includes the following components: tremella fuciformis berk heteropolysaccharide, transparent xanthan gum, EDTA, carbomer U20, glycerin, 1,3-butylene glycol, glycosylglycerol PTG, glycereth-26, a salix albabark extract, a geranium robertianum extract, a greater plantain extract, a lactobacillus ferment lysate, yeast zinc, water-soluble fullerene, tripeptide, Haloxy: palmitoyl tripeptide-1 and palmitoyltetrapeptide-7, Eyeliss: dipeptide-2 and palmitoyl tetrapeptide-7, antiporine 8G, areaumat perpetua, triethanolamine, a silk peptide liquid, phenoxyethanol, E-1008, a stephania tetrandra extract, CO-40, essences, menthyl lactate and water. The anti-aging essence is good in anti-aging effect, safe and efficient and also has a certain freckle removal performance.

The invention provides a freeze-dried tear stain-removing staple food for pet cats, which comprises the following components in 100 parts by weight: 70-90 parts by weight of a main material, 2-5 parts by weight of cellulose, 1-5 parts by weight of vegetable oil, 1-10 parts by weight of krill oil, 0.5-5 parts by weight of calendula, 0.15-5.5 parts by weight of a plant extract, 0.01-0.5 part by weight of haematococcus pluvialis and the balance of an additive. The plant extract comprises a honeysuckle flower extract, a semen plantaginis extract, a chrysanthemum flower extract, a liquorice root extract, a cranberry extract, a Vaccinium vitis-idaea extract, a green tea extract, a ginkgo leaf extract and a grape seed extract. Through cooperation of various anti-inflammatory and anti-oxidation substances, the anti-oxidation substances can relieve stress of cat eyes of pets, reproduce bacteria around eyes, inhibit inflammation, scavenge free radicals and reduce tear discharge of pet cats. Meanwhile, the liquorice root extract has the effects of expelling phlegm to arrest coughing and clearing away heat and toxic materials, is beneficial to dredging nasolacrimal ducts of the pet cats, and fundamentally reduces the production of tears, thereby achieving the purpose of reducing tear stains.

The invention discloses a paper diaper for disease diagnosis, and belongs to the technical field of daily supplies for infants. The paper diaper comprises a waterproof layer, a hydrophilic non-woven fabric layer and a liquid absorbing inner core from the inner part to the outer part in sequence, wherein a white blood cell detection test strip and a bacterial virus detection test strip are arranged on the side, close to the skin, of the liquid absorbing inner core; the liquid absorbing inner core contains plantain seed extract or crofton weed extract. The paper diaper for disease diagnosis can timely diagnose the content variation of white blood cells in excreta or body fluid of infants, or diagnose the condition of pathogenic bacteria, monitors health conditions of the infants in real time, and achieves timely disease prevention.

The invention discloses a plant-derived air purification composition which is prepared from the following raw materials in parts by weight: 4 to 8 parts of a radix asparagi extract, 1 to 4 parts of apolygala tenuifolia extract, 2 to 6 parts of glycosaminoglycan, 2 to 6 parts of a schisandra chinensis extract, 6 to 10 parts of locust bean gum, 1 to 4 parts of a radix achyranthis bidentatae extract, 0.5 to 2 parts of turanose, 6 to 10 parts of a divaricate saposhnikovia root extract, 1 to 4 parts of a pericarpium citri reticulatae extract, 6 to 10 parts of a dried lacquer extract, 1 to 4 partsof a fructus kochiae extract, 4 to 8 parts of a liquorice extract, 2 to 6 parts of a semen plantaginis extract, 4 to 8 parts of a fructus cnidii extract, 6 to 10 parts of a puerarin extract, 0.2 to 0.8 part of theophylline, 1 to 4 parts of a cortex acanthopanacis extract, 1.2 to 1.8 parts of artemisinin, 1 to 4 parts of an angelica sinensis extract, 1 to 4 parts of ethanol, 2 to 6 parts of a mangnolia officinalis extract, 1 to 4 parts of a fructus aurantii immaturus extract, 1 to 4 parts of 1,2-propylene glycol, 1 to 4 parts of an eucommia ulmoides extract, 1 to 4 parts of rhamnose and 150 parts of deionized water.

The invention belongs to the technical field of candies, and particularly relates to a soft candy containing erythritol and a preparation method thereof. The soft candy is prepared from the following components in percentage by mass: 4 to 5.5 percent of gelatin, 1.2 to 1.8 percent of pectin, 25 to 33 percent of stachyose, 10 to 15 percent of a semen plantaginis extract, 20 to 27 percent of xylitol, 1.5 to 2.0 percent of citric acid, 1.5 to 2.7 percent of high fructose corn syrup, 3 to 8 percent of erythritol crystal particles, 0.05 to 0.10 percent of essence, 0.05 to 0.10 percent of food coloring and the balance of water. The preparation method comprises the following steps: preparing the semen plantaginis extract, swelling the gelatin, dissolving pectin, adding stachyose, the semen plantaginis extract, xylitol and glucose syrup, boiling, concentrating, adding gelatin, citric acid, essence and food coloring, casting, molding, and coating erythritol crystal particles. The soft candy promotes the reproduction of effective microbial communities such as bifidobacteria and lactobacillus, and the health-care efficacy of relaxing bowel is enhanced.

The invention provides a preparation method of a semen plantaginis polysaccharide extract. The preparation method comprises the following steps: (1) raw material treatment, namely drying semen plantaginis, removing impurities, crushing, breaking hulls, adding petroleum ether, and carrying out reflux degreasing, so as to obtain residues; (2) rough extraction, namely adding distilled water with the weight of 6-12 times of weight of the residues and a cosolvent with the weight of 0.1-0.2 time of weight of the residues, carrying out ultrasonic assistant dissolving and concentration, adding ethanol, and carrying out alcohol precipitation and centrifugation, so as to obtain a precipitate, sequentially and respectively washing the precipitate with absolute ethyl alcohol and acetone, dissolving the precipitates with distilled water, and carrying out dialysis, concentration and freeze drying, so as to obtain a precipitate A; and (3) extraction, namely sequentially and respectively washing the precipitate A with absolute ethyl alcohol and acetone, dissolving the precipitate A with distilled water while heating, carrying out centrifugation, extracting supernate, removing color matters and proteins, and carrying out reduced pressure concentration, so as to obtain the semen plantaginis extract. According to the preparation method, the semen plantaginis is subjected to hull-breaking pretreatment and is subjected to secondary extraction through assistant dissolving by virtue of the cosolvent and ultrasonic waves, and the prepared extract is high in polysaccharide content, and the extraction process is simple.

The invention discloses a plate growth promoter and a preparation method thereof. According to the technical scheme, the plate growth promoter is composed of water-soluble mineral substances made of sedimentary limestone, oyster shells, cunninghamia lanceolata extract, chamaecyparis extract, pine extract, semen plantaginis extract, boxwood extract, gingko tree extract, abies holophylla extracts and the balance of water. Due to the inheriting effect of the substances, a better plant growth promoting effect can be achieved, plants can be prevented from being invaded and harassed by various pests and are capable of growing healthily, meanwhile, the growth speed of the plants is increased to ensure that the harvest period is shortened, and the plants or fruits can grow bigger so as to be beneficial to increment of incomes of farmers; and more importantly, since the plate growth promoter disclosed by the invention is made of pure natural materials, the plate growth promoter cannot injure human bodies, can restore the self-cleaning capability of soil, can be naturally decomposed, and is non-toxic, pollution-free and nuisanceless.

The invention relates to a preparation method of an immunosuppressive activity plantago seed extractive and applications thereof. The preparation method comprises the following steps of: degreasing raw materials and obtaining crude extractive through water extraction and alcohol precipitation; deproteinizing and depigmenting the crude extractie through dialysis and ion exchange chromatography; and removing micromolecular chemical compositions to prepare the plantago seed extractive with higher purity. A total polysaccharide content in the inventive immunosuppressive activity plantago seed extractive accounts more than 72% of the extractive by weight. Shown by a great amount of pharmacological experiments, the plantago seed extractive has immunosuppressive activity, can be used for preparing immune inhibitors in various preparation forms or used as a raw material medicine for preparing other immunosuppressive medicines and used for medical purposes in treating diseases related to immune inflammatory injuries, such as nephritis, cystitis, prostatitis, urethritis, edema and eye diseases, such as uveitis, interstitial keratitis, corneal transplantation rejection, and the like.

The invention provides a chlorine dioxide solution used for oral administration. The chlorine dioxide solution used for oral administration comprises an A component and a B component; the A componentat least comprises radix scutellariae extract product, Fructus Forsythiae extract product, dandelion extract product, phellodendron extract product, bighead atractylodes rhizome extract product, treepeony bark extract product, Poria cocos extract product, Plantain seed extract product, ephedra stem extract product, Chinese yam extract product, Radix Codonopsis extract product, licorice extract product, and cortex cinnamomi extract product; and the B component comprises modified diatomite loaded with chlorine dioxide, and deionized water.

The invention belongs to the technical field of fruit and vegetable fresh-keeping, and particularly discloses an edible coating fresh-keeping agent, a preparation method thereof, an application methodthereof, and a fruit and vegetable fresh-keeping method. The edible coating fresh-keeping agent of the present invention comprises the following raw material components: beta-yclodextrin, hydroxypropyl-beta-cyclodextrin, bletilla striata polysaccharide, hydroxyethyl cellulose, nano silica, a ginkgo extract, a plantain seed extract, a coconut shell extract, cinnamon essential oil, Litsea cubeba essential oil, and eucalyptus essential oil. The fresh-keeping agent not only can effectively preserve fruits and vegetables, but also is safe, non-toxic, edible, and has certain health effects. The invention also provides the preparation method of the fresh-keeping, the application and the fresh-keeping method. The edible coating fresh-keeping agent can effectively form a dense protective layer onthe surface of the climacteric fruit, can effectively inhibit the breathing of fruits and vegetables, reduces the evaporation of fruits and vegetables, and inhibits the invasion of various viruses andmicroorganisms, and effectively delays the aging and decay of the fruits and vegetables.

The invention relates to the technical field of cosmetics, in particular to an anti-aging soothing composition and application thereof. The anti-aging soothing composition comprises the following components: tremella fuciformis heteropolysaccharide, yeast zinc, a European pear extract, a semen plantaginis extract, hydrolyzed lupin protein, chondrus crispus, Ectoin, a brown algae extract, madecassoside and a lactobacillus ferment lysate, and has the advantages of remarkable anti-aging, soothing and anti-allergy effects and no side effect.

The invention discloses a medicine for preventing and treating rana grylio gastroenteritis. The medicine comprises the following components in parts by weight: 400-500 parts of bupleurum sinensis extract, 40-60 parts of acanthopanax senticosus extract, 100-120 parts of plantain seed extract, 30-50 parts of salvia extract, 100-120 parts of cuttlebone extract, 100-120 parts of anthocyanin, 80-90 parts of quiquefolium saponins, 100-120 parts of thinleaf milkwort root extract and 100-120 parts of fructus alpiniae oxyphyllae extract. The medicine is reasonable in compatibility and is capable of preventing and treating rana grylio gastroenteritis.

The invention relates to the field of medicine and health care, in particular to a composition for relieving prostatitis and enhancing renal function and a preparation method and application thereof. The composition comprises the following components in parts by weight: 1-15 parts of eucommia male flower extract; 1-15 parts by weight of a lycium ruthenicum extract; 1-15 parts by weight of a semen plantaginis extract; 0.5-10 parts by weight of a haematococcus pluvialis extract; 1-10 parts by weight of a cordyceps militaris extract; 0.5-10 parts by weight of gamma-aminobutyric acid; 1-15 parts by weight of a radix cynanchi bungei extract; and 1-15 parts by weight of composite probiotic powder. According to the preparation method of the eucommia ulmoides male flower extract and the radix cynanchi bungei extract, the extraction efficiency is high, damage to effective substances in the extraction process can be reduced, the radix cynanchi bungei extract and the eucommia ulmoides male flower extract can be mixed into a second mixture to play a role, and prostatitis relieving and kidney function enhancing are well helped; according to the traditional Chinese and western medicine pathology and pathogenesis of prostatitis, the composition is prepared by tonifying the kidney, promoting qi to activate blood, resisting inflammation and conditioning gastrointestinal flora.

The invention relates to a pharmaceutical composition used for preventing and treating diabetes mellitus combined with hypertension. The pharmaceutical composition comprises valsartan and plantain seed extract in a weight ratio of 1: 0.01-100, and a tablet, a capsule, a granule and the like can be prepared from the pharmaceutical composition. Through pharmacological research, it is found that the composition has an ideal effect on treatment of primary hypertension combined with diabetes mellitus, can substantially reduce the levels of blood pressure and blood sugar of rats, obviously improves renal functions and exerts unexpected technical effects.

The invention belongs to the technical field of pharmaceutical compositions, and discloses a hypoglycemic medicine for treating diabetes, and a preparation method and application thereof. The pharmaceutical composition is composed of the following components in parts by weight: 30-60 parts of fenugreek extract, 20-30 parts of Plantain seed extract, 50-60 parts of gardenia extract and 10-20 parts of konjak crude drug. The medicine disclosed by the invention has obvious functions of lowering blood sugar and promoting insulin secretion, has the advantages of novel formula, reliable quality, low price and no obvious side effect, and is convenient to take.

The invention provides a natural medicine for treating gout diseases. The natural medicine is prepared from the following components in parts by weight: 45-55 parts of eurycoma longifolia jack extract, 60-70 parts of rhizoma smilacis glabrae extract, 25-30 parts of salvia miltiorrhiza extract, 45-65 parts of flemingia philippinensis extract, 25-45 parts of lophatherum gracile extract, 20-25 parts of astragalus glycosides, 25-35 parts of lalang grass rhizome extract, 30-65 parts of kudzu vine root extract, 30-35 parts of gynostemma pentaphylla extract, 20-40 parts of rhizoma alismatis extract, 25-30 parts of semen plantaginis extract and 40000-50000 parts of carrots. The medicine has the effects of strengthening kidneys and bones, expelling wind, eliminating dampness, removing spur, expelling cold and repairing chondrocytes, so that the effect of the medicine can quickly penetrate and reach the focus, 'rheumatism toxicity' in a human body or bone joints can be accurately cleaned, development of osteoarthritic joint inflammation can be stopped, an injured synovial membrane and synovial membranes can be repaired, and gout diseases can be radically treated.

The invention belongs to the technical field of enzymes, and particularly relates to a composite oligosaccharide enzyme for reducing uric acid and a preparation method thereof. The composite oligosaccharide enzyme for reducing uric acid is mainly prepared from the following raw materials in parts by mass: 5-8 parts of a semen plantaginis extract, 3-5 parts of a fructus lycii extract, 0.1-0.2 part of zinc yeast, 5-6 parts of brown sugar, 7-8 parts of a tea flower extract, 5-7 parts of grape seed powder, 60-62 parts of distilled water, 10-15 parts of day lily powder, 1-2 parts of chitosan oligosaccharide, 0.01-0.02 part of vitamin A and 0.05-0.07 part of a rosemary extracting solution. The raw materials are fermented, filtered to remove residues, mixed and aged to prepare the composite oligosaccharide enzyme capable of reducing uric acid. The raw materials are easy to obtain, the preparation process is stable, and the prepared composite oligosaccharide enzyme for reducing uric acid can promote uric acid metabolism of a human body and effectively reduce the blood uric acid value, has no obvious side effect and is suitable for popularization.

The invention relates to the field of disinfectants, and especially relates to a plant-extracted household deodorizing disinfection composition and a preparation method thereof. The plant-extracted household deodorizing disinfection composition is prepared from at least the following raw materials: clove extract, radix sophorae flavescentis extract, lemon extract, honeysuckle flower extract, robinia pseudoacacia extract, eucommia bark extract, white birch extract, coptis chinensis extract, poplar flower extract, semen plantaginis extract, liquorice root extract and water. Pure biological substances such as plant extracts are adopted, so no chemical reagents are residual, and the composition does not cause skin or respiratory system allergy after being used, does not cause various adverse reactions, and has the advantages of no toxicity, harmlessness, safety and convenience in use, suitableness for home use, good stability, easiness to dissolve, bacteriostatic and bactericidal activity,obvious synergistic effects, low dosage, quickness in deodorization effect, keeping the activity for a long time, and avoiding of secondary pollution.

The invention relates to an application method of a plant extract and application of the plant extract to preparing drugs / healthcare products for treating / preventing high uric acid-related diseases, particularly to a preparation method of a semen plantaginis extract and application of the semen plantaginis extract to preparing the drugs / healthcare products for treating / preventing the high uric acid-related diseases. The application method of the semen plantaginis extract and application of the semen plantaginis extract to preparing the drugs / healthcare products for treating / preventing the highuric acid-related diseases have the advantages that preparation processes of the semen plantaginis extract are simple and low in cost; ethanol and water or a mixture of ethanol and water serves as the solvent for semen plantaginis extraction to avoid the problem of pollution or residues of organic solvent and achieve safety and environmental protection; the prepared semen plantaginis extract achieves significant uric acid reducing effects and is low in side effects and can be used for preparing gout disease relieving drugs, thereby providing a new direction for improving the phenomenon of high side effects of existing gout disease treating drugs.

The invention discloses an anti-aging essence and a preparation method thereof, and relates to the field of skin care products. The anti-aging essence of the present invention includes the following components: Tremella heteropolysaccharide, transparent xanthan gum, EDTA, Kapo U20, glycerin, 1,3-butanediol, glycerol glucoside PTG, glycerol polyether-26, white willow bark extract, Geranium slenderness extract, Psyllium grandis extract, Lactobacillus fermented lysate, yeast zinc, water-soluble fullerenes, tripeptide, Haloxy palmitoyl tripeptide-1 and palmitoyl tetrapeptide-7, Eyeliss dipeptide-2 and palmitoyl tetrapeptide-7, V-face frozen algae, Helichrysum stress-relieving and anti-inflammatory extract, triethanolamine, silk peptide liquid, phenoxyethanol, E-1008, fenugreek extract, CO- 40. Essence, menthyl lactate and water. Its anti-aging effect is good, safe and efficient, and it also has certain freckle-removing properties.

The invention discloses application of a semen plantaginis extract in preparation of a medicine for treating myocardial hypertrophy. In-vivo pharmacological experiments are carried out by using an experimental animal model of isoproterenol-induced myocardial hypertrophy, and research results show that the semen plantaginis extract disclosed by the invention can be used for remarkably improving the heart function of a mouse with isoproterenol-induced myocardial hypertrophy, can be used for remarkably inhibiting myocardial morphological enlargement and high expression of an embryo gene, and the semen plantaginis extract is expected to be used for preparing medicines for preventing and treating myocardial hypertrophy or assisting in treating myocardial hypertrophy.

The invention relates to a hypouricemic medicine and a preparation method thereof. The hypouricemic medicine comprises a soybean fermentation extract, a plantaginis semen extract and an eurycoma longifolia extract. The preparation method of the hypouricemic medicine comprises the following specific steps: step one, crushing soybeans, carrying out fermentation, carrying out extraction, separation and purification right after the completion of the fermentation, performing concentration on the liquid after the extraction, separation and purification, and performing freeze-drying on the residual slurry under reduced pressure to obtain a soybean fermentation extract; step two, crushing plantaginis semen, adding deionized water, performing ultrasonic extraction, separation and purification, performing vacuum concentration on the residual liquid, and carrying out spray drying to obtain the plantaginis semen extract; step three, crushing eurycoma longifolia, adding deionized water, performing ultrasonic extraction, separation and purification, performing vacuum concentration on the residual liquid, and carrying out spray drying to obtain the eurycoma longifolia extract; step four, mixing the plantaginis semen extract with the eurycoma longifolia extract according to a ratio of 1: 10 to obtain a plantaginis semen and eurycoma longifolia mixed extract; and step five, mixing the soybean fermentation extract with the plantaginis semen and eurycoma longifolia mixed extract according to a mass ratio of (1-2): (2-3).

The invention relates to the technical field of natural medicines, in particular to plantain seed extract, a preparation method and application thereof. In the plantain seed extract, the main effective ingredients are iridoids and phenylethanoid glycosides which are vegetable extracts, wherein the vegetable extracts are extracted from the vegetable plantain seed with a solvent; and then refined and purified by a chromatographic process. The invention also provides the applications of the plantain seed extract in preparation of the medicines for preventing the vascular dementia.