CN105767396A - Lipid-lowering ginkgo seed tea - Google Patents
Lipid-lowering ginkgo seed tea Download PDFInfo
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Abstract
The invention discloses a lipid-lowering ginkgo seed tea, being prepared from the following raw materials: hawthorn fruit, cassia seed, giant knotweed rhizome, fleeceflower root, lucid ganoderma, rhubarb, root of lobed kudzuvine, malt dextrin, flavonoids of ginkgo seed, polyphenols, stevioside, vitamins, thickeners, co-solvents, dispersants, antioxidants, flavor enhancers, and flavoring agents. The lipid-lowering ginkgo seed tea is prepared from the steps of liquid extraction, clear paste preparation, granulation, sterilization and the like. The ginkgo seed tea provided by the invention has a lipid-lowering effect, a blood nourishing effect, and high lipid-lowering effectiveness, and a prepared drink tastes good and mellow. The ginkgo seed tea provided by the invention contains an essence extracted from pure natural plants without adding any preservatives and pigments, breaks through the cold tea technology, and utilizes the low-temperature extraction technology to ensure that the active ingredients in the plants are not destroyed, and the tea is easily absorbed by the body after being drunk, and the shortcomings of traditional products are overcome by easiness in dissolution and absorption.
Description
[technical field]
The invention belongs to tea processing technique field, be specifically related to a kind of blood fat reducing Folium Ginkgo tea and preparation method thereof.
[background technology]
Ginkgoaceae plant Ginkgo biloba is the endemic tree of China, has another name called maidenhair tree, and the age of tree, up to more than thousand, is the Permian Period in ancient times Relict Plant, has the title of " living fossil " in plant kingdom, is Relict Plant the most ancient in existing seed plant.Modern science shows, the chemical composition of Folium Ginkgo is sufficiently complex, wherein containing effective ingredient such as flavonoid, terpenoid, phenols, healthy trace elements with household and several amino acids in Folium Ginkgo.Folium Ginkgo extract contains substantial amounts of ginkgetin; ginkgetin is highly resistant to and prevents the infringement that human body is caused by the electromagnetic radiation such as computer, mobile phone; particularly that the protective effect of brain cell is obvious, also there is vessel softening, remove rubbish in blood, drop the effects such as three fat, scavenging free radicals.In active substance, the content of flavone decides the medical value of Folium Ginkgo, it is desirable to obtain more flavone, it is critical only that the extracting method of Folium Ginkgo；In traditional extraction process, solvent is easily accessible cell when heating, but solable matter is higher at the condition dissolubility of heat, is successively dissolved and significantly high permeability occurs, causes that extraction ratio is low, active component is low, and technique is loaded down with trivial details, and the production cycle is long.
Tea polyphenols is the general name of Polyphenols of Tea, is a kind of pure natural complex, and its content accounts for the 10%-25% (Forint phenol method) of dry matter of tea total amount.Tea polyphenols is made up of catechin (flavanol compound), anthocyan (leucoanthocyanidin and anthocyanidin), anthoxanthins (flavone and flavonols), phenolic acid and the big material of depside four, wherein catechin is mostly important, activity is the highest, accounts for the 70%-80% of tea polyphenols total amount.Tea polyphenols is a kind of high-efficient pure natural antioxidant, human free radical, enhancing human body immunity power can be removed, there is the multiple medical health care functions such as antitumor, radioprotective, antiviral, defying age, lowering blood-fat and reducing weight, also there is suppression atherosclerosis, remove halitosis, strengthen the effects such as vascular resistance ability.The oxidation resistance of tea polyphenols, than strong 3-9 times of VE, Butylated hydroxyanisole (BHA) and dibenzylatiooluene (BHT), is widely used to the every field such as the oxidation resistanct fresh-keeping of varieties of food items, medicine, health product, cosmetics and article of everyday use at present.Extraction is that tea polyphenols produces and the first step of preparation, how to improve the extraction ratio of tea polyphenols at low cost, and keeps the biological activity of tea polyphenols, is the bottleneck problem in producing.Commercial production is usually first by Folium Camelliae sinensis grinding and sieving, more under the high temperature conditions with water or high concentration ethanol aqueous solution lixiviate.Used high-temp extracting method Problems existing has: (1) energy consumption is high；(2) Product Activity low (tea polyphenols is oxidizable)；(3) extract impurity content high (high temperature easily leaches impurity)；(4) subsequent purification is often, and tea polyphenols loss amount is big；(5) easy gelatinizing during tea-leaf power high-temp extracting, not easily filters；(6) equipment requirements is high.Therefore the improvement of Methods of Extraction of Tea-polyphenols is significant with innovation.
Stevioside has excellent physiological property and stability, is widely used in the industries such as food, beverage, wine brewing, medicine, daily-use chemical industry as a kind of new food additive, and not only extraction process reaches its maturity, and extraction ratio also improves day by day.The method extracting stevioside at present from Stevia leaves mainly has organic solvent extraction and water extraction method, and wherein organic solvent extraction solvent consumption is big, cost is high, practicality is not good enough.Hot water extraction is current Application comparison extracting method widely, in industry, the general technology flow process of stevioside's water extraction is as follows: leaf of Folium Stevlae Rebaudianae → water logging (8-10h) → coarse filtration → removing impurity by means of precipitation → fine straining → purification → decolouring → desalination → concentrate drying, wherein water logging extraction and purification are the committed step of this technique, use and compare the hot water extracted many times that extracting process widely is 80 DEG C, the method of purification now more adopts resin absorption to separate, and the method for decolouring mainly has activated carbon decolorizing and resin decolorization two kinds.The shortcoming of this technique is that extraction time is long, and thermal energy consumption is high, and equipment processing safety is required height by High Temperature High Pressure, purification and in decolorization seriality poor, resin and reagent dosage are big simultaneously, and resin utilization rate is low, operates length consuming time.
Hyperlipidemia is the subhealth state colony that modern society is bigger.Raising along with our people's people life level, people take food a large amount of saturated fat (triglyceride) and high-cholesterol diet, make the too high levels of Blood Cholesterol and triglyceride, become to bring out the risk factor of the cardiovascular and cerebrovascular diseases such as atherosclerosis, myocardial infarction, apoplexy, very harmful.The present considerable masses wish to take drugless medication and merely desire to adopt the way of diet reduce and keep internal blood fat not raise.Current many fat reducing health products only pay attention to blood fat reducing, think little of nourishing blood, and result have impact on the effectiveness of blood fat reducing.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of blood fat reducing Folium Ginkgo tea, and to solve to prepare ginkgetin extraction ratio in prior art and active component is low, technique is loaded down with trivial details, and the production cycle is long；The tea polyphenols activity low (tea polyphenols is oxidizable) of preparation and extract impurity content high (high temperature easily leaches impurity)；In stevioside's purification and decolorization, seriality is poor, and resin and reagent dosage are big, and resin utilization rate is low, operates length consuming time；The problems such as tea product blood fat reducing effectiveness difference.The Folium Ginkgo tea of the present invention have the effects such as blood fat reducing, can nourish blood, and blood fat reducing effectiveness is high, make that beverage mouthfeel is good, taste is aromatic；The blood fat reducing Folium Ginkgo tea of the present invention are without any preservative and pigment, pure natural plant refines elite, breach cold water to make tea technology, utilize low-temperature extraction technology, ensure that the active component in plant is not subjected to destroy, easily being absorbed by the body after drinking, it is readily soluble and is easily absorbed the short slab solving traditional product；The blood fat reducing Folium Ginkgo tea frozen water of the present invention, cold water, brewed in hot water even can, unique flavor, facilitate all ages drunk by people.
In order to solve above technical problem, the present invention by the following technical solutions:
A kind of blood fat reducing Folium Ginkgo tea, in units of weight portion, including following raw material:: Fructus Crataegi 100-400 part, Semen Cassiae 100-400 part, Rhizoma Polygoni Cuspidati 100-400 part, Radix Polygoni Multiflori 60-180 part, Ganoderma 60-180 part, Radix Et Rhizoma Rhei 40-80 part, Radix Puerariae 40-80 part, malt extract stick with paste 30-60 part, ginkgetin 1-3 part, tea polyphenols 1-3 part, stevioside's 1-3 part, vitamin 1-3 part, thickening agent 0.8-2 part, cosolvent 0.8-2 part, dispersant 0.8-2 part, antioxidant 0.8-2 part, tasty agents 0.5-1.5 part, flavouring agent 0.5-1.5 part；
The preparation method of described blood fat reducing Folium Ginkgo tea, comprises the following steps:
S1: pulverize after Fructus Crataegi, Semen Cassiae, Rhizoma Polygoni Cuspidati, the Radix Polygoni Multiflori, Ganoderma, Radix Et Rhizoma Rhei, Radix Puerariae are respectively dried, cross 40-60 mesh sieve, put in ultrasonic extraction equipment, extract after adding the 1500-7000 abundant moistening of part water, the condition extracted is: ultrasonic power is 120-180W, Extracting temperature is 40-70 DEG C, and extraction time is 30-60min；
S2: step S1 is extracted medical filtration, is sequentially added into ginkgetin, tea polyphenols, stevioside, vitamin, thickening agent, cosolvent, dispersant, antioxidant, tasty agents, flavouring agent after puckery, it is stirring 1-3min under 200-500r/min at rotating speed, be uniformly mixed liquid, and concentrating the filtrate to relative density when temperature is 64-66 DEG C is the clear paste of 1.32-1.38；
S3: the clear paste of step S2 spray drying at temperature 200-220 DEG C, to water content≤6%, is crossed the sieve of 200-400 order after pulverizing, prepares powder；
S4: the powder of step S3 and malt extract are stuck with paste, 50-100 part water adopts comminutor to make granule after being sufficiently mixed; finally prepared described granule is 134-136 DEG C in temperature; pressure is 210-230KPa, and the time is sterilizing under 20-40s, obtains blood fat reducing Folium Ginkgo tea；
The preparation method of ginkgetin described in step S2 comprises the following steps:
(1) undertaken pulverizing and cross 40-80 mesh sieve by dry Folium Ginkgo, prepare Ginkgo Leaf；
(2) adopting the water of 38-62 DEG C to carry out lixiviate the Ginkgo Leaf that step 1 prepares, in lixiviate, solid-to-liquid ratio is 1:12-14 (W/V), and extraction time is 2.5-3.5h, extracts 2-3 time, filtration, merging filtrate after extraction, prepares mixing lixiviating solution；
(3) the mixing lixiviating solution concentrate drying that step 2 is prepared, prepare lixiviate cream, the water of be used in lixiviate 5.5-6 times of volume of cream 45-55 DEG C dissolves, anhydrous ethyl acetate solvent is adopted to carry out extracting 2-3 time, continuation anhydrous ethyl acetate carries out repeatedly crystallization treatment, in crystallization process, solid-to-liquid ratio is 1:5.2-5.4 (W/V), prepares crystal crude product；
(4) crystal crude product step 3 prepared is through supercritical CO2Extracting, the condition of extraction: extraction kettle pressure is 12-18MPa, and extraction temperature is 42-45 DEG C, extraction time is 32-40min, prepares ginkgetin；
The preparation method of tea polyphenols described in step S2 comprises the following steps:
A () will cross 40-80 mesh sieve after group's sieve tea pulverizing, mix for 1:16-20 in mass ratio with the ethanol water that mass fraction is 40%-60%, extract 2-3 time at temperature is 36-40 DEG C, each 20-30min, filters, merging filtrate, concentration, prepares tea polyphenols crude extract；
B the tea polyphenols crude extract that step a prepares is joined in KCl solution by (), pH regulator is to 6.8-7.2, it is removing impurity under 4000-4500r/min at centrifugal rotational speed, adopts 0.45 μm of filter membrane at temperature is 34-36 DEG C, the solution after being centrifuged to be filtered, prepare filtrate；
(c) by step b prepare filtrate ether extraction, freezing, after drying prepare tea polyphenols；
The preparation method of stevioside described in step S2 comprises the following steps:
(A) crossing 40-80 mesh sieve after being pulverized by Stevia leaves, be dipped in water and soak 1-1.2.h, solid-to-liquid ratio is 1:20-25 (W/V), it is 100-120W at ultrasonic power, Extracting temperature is 40-60 DEG C, and extraction time is extract under 20-30min, prepares Folium Stevlae Rebaudianae medicinal liquid；
(B) the Folium Stevlae Rebaudianae medicinal liquid that step A prepares is crossed the filter cloth of 120-180 order, prepares Folium Stevlae Rebaudianae filtrate；
(C) NaAl (SO of filtrate percentage by weight 0.8%-1% is added to the step B Folium Stevlae Rebaudianae filtrate prepared4)2Ca (OH) with filtrate percentage by weight 1%-1.4%2, tune pH value is 6.8-7.2, at temperature 44-48 DEG C, stands 3.2-3.5h, prepares the solution after the removal of impurity；
(D) by the solution frit after the step C removal of impurity prepared and in being concentrated into every milliliter containing stevioside 10%-25%, macroporous adsorbent resin ADS-8 separating-purifying is adopted to prepare the liquid of stevioside, condition is: resolving agent is the alcoholic solution of 55%-65%, its consumption is 1-3 times of macroporous adsorbent resin volume, water wash zone is deionized water, absorption with macroporous adsorbent resin regenerated solvent is the KOH solution of 2%-4%, adsorption zone flow velocity 6-10BV/h, desorption zone flow velocity 15-20BV/h, water wash zone flow velocity 20-25BV/h, renewing zone flow velocity 6-8BV/h, switching time is 700-750s, temperature is 40-50 DEG C, pressure is 0.4-0.9MPa；
(E) stevioside's liquid that step D prepares is concentrated, at temperature is 200-220 DEG C, carries out spray drying, prepare stevioside.
Further, described vitamin includes one or more in vitamin A, vitamin C, vitamin D and vitamin E.
Further, described thickening agent includes one or more in xanthan gum, guar gum, locust bean gum and locust bean gum.
Further, described cosolvent is polyvinylpyrrolidone.
Further, described dispersant includes following component: one or more in potassium carboxymethylcellulose, agar, modified starch, polyacrylic acid potassium and potassium alginate.
Further, described antioxidant includes one or more in food grade antioxidant 9701, food grade antioxidant BHT, the different VC potassium of food grade antioxidant, food grade antioxidant BHA and food grade antioxidant MSK-NE150.
Further, described tasty agents includes one or more in inosinic acid potassium and guanyl potassium.
Further, described flavouring agent is methyl cyclopentenyl ketone.
Pharmacological action of the present invention is as follows:
Fructus Crataegi sour in the mouth is sweet, slightly warm in nature.Fructus Crataegi is containing Multiple components such as Crataegolic acid, malic acid, citric acid, caffeic acid, lactone, fat, hyperin, lipolytic enzyme, tannin, protein, Quercetin, riboflavin, carotene, saccharide and vitaminss.Fructus Crataegi has aid digestion, protection cardiovascular, reduces the effect of blood fat and blood pressure, antibacterial, fat-reducing, antitumor, scavenging free radicals, enhancing immunity.Pharmacological research finds, after rabbit serve on hawthorn preparation 3 weeks, serum cholesterol is remarkably decreased.
Semen Cassiae, containing anthraglycosides material, produces rheum emodin, physcione, chrysophanic acid, chrysophanol and glucose etc. after decomposition.Semen Cassiae sweet-bitter flavor cold nature, returns liver, gallbladder, kidney three warp, has effect of heat clearing away, improving eyesight, intestine moistening.It is demonstrated experimentally that Semen Cassiae has blood pressure lowering, blood fat reducing, the effect such as antibacterial, treatment hyperlipemia has certain curative effect.
Rhizoma Polygoni Cuspidati slightly warm in nature, has promoting blood circulation to restore menstrual flow, dampness removing function, is conventionally used to treatment rheumatism, arthralgia pain, jaundice, amenorrhea, dysmenorrhea etc..Proving according to modern pharmacological research, Rhizoma Polygoni Cuspidati, containing anthraquinone analog compound and flavonoid Multiple components, can extract the polydatin etc. with component for reducing blood fat in acting in accordance with YIN YANG changes in four seasons stem.About it is demonstrated experimentally that Rhizoma Polygoni Cuspidati has the effect reducing cholesterol and triglyceride.
Radix Polygoni Multiflori bitter in the mouth, sweet, puckery, warm in nature, return liver, kidney two warp.The Radix Polygoni Multiflori, containing abundant lecithin, starch etc., contributes to fat operating.The Radix Polygoni Multiflori, containing anthracene ester derivant, is mainly chrysophanol and rheum-emodin, is secondly chrysophanic acid, physcione etc., enterokinesia can be made to strengthen and suppress cholesterol absorption.The Radix Polygoni Multiflori can also stop cholesterol at intrahepatic deposition, is detained or penetrates in endarterium, to slow down atherogenesis in serum.Rate and blood-lipid decreased be likely to Radix Polygoni Multiflori effective ingredient with cholesterol in conjunction with relevant.
Ganoderma is warm in nature, slightly sweet flavor.Ganoderma is containing sterol, alkaloid, protein, polysaccharide, aminoacid, enzyme etc..Has effect of benefit vital essence, bone and muscle strengthening.Cure mainly metal fatigue, palpitation and insomnia, hypertension, hypercholesterolemia, cerebrovascular sclerosis etc..
Radix Et Rhizoma Rhei has reducing blood pressure, reduces the effects such as cholesterol.Clinical treatment hyperlipidemia patient, each 0.25 gram of Oral Rhubarb powder, every day 4 times, one month is a course for the treatment of, and triglyceride can be made to decline.It is particularly suited for the hyperlipidemia patient of constipation.
Radix Puerariae has the effects such as heat clearing away, decomposing alcohol, invigorating the spleen and regulating the stomach, relieving alcoholism and protecting the liver, and to reducing blood fat, blood pressure, blood glucose, auxiliary treatment coronary heart diseases and angina pectoris, nervous headache etc. have positive effect.
Ginkgetin is to extract from the leaf of " living fossil " ginkgo; it is highly resistant to and prevents the infringement that human body is caused by the electromagnetic radiation such as computer, mobile phone; particularly that the protective effect of brain cell is obvious, also there is vessel softening, remove rubbish in blood, drop the effects such as three fat, scavenging free radicals.
Tea polyphenols is extracting directly from a tender leaf of sieve tea and spring bud, has very strong Scavenger of ROS to act on free radical, control oxidase, elimination halitosis, protection vision etc..
Stevioside extracts from natural Stevia leaves, is a kind of have high sugariness, natural sweetener low in calories.Long-term eating will not make people get fat, and have certain adjustment blood glucose function stevioside to have no side effect, non-carcinogenesis, noresidue, safe and reliable, often edible can the disease such as prophylaxis of hypertension, heart disease, dental caries, be particularly well-suited to the health care of diabetics, phenyl ketonuria patient and obese people.Stevioside is that the current world has been found that, and through the natural low caloric value sweeting agent closest to sucrose taste of China's Ministry of Public Health, Ministry of Light Industry's approval use, it is continue to have Development volue and the healthy natural sucrose substitute praised highly outside cane suger and beet sugar, is described as " third place in the world sucrose ".
The method have the advantages that
(1) xanthan gum in the present invention, guar gum, locust bean gum, locust bean gum, it is possible to play thickening, suspension effect, improve mouthfeel, make mouthfeel smooth, improve blood fat reducing Folium Ginkgo tea quality；
(2) present invention uses inosinic acid potassium, guanyl potassium, delicate flavour can be made to increase several times, make blood fat reducing Folium Ginkgo tea have strong natural flavor；
(3) present invention uses cosolvent, is conducive to the dissolving of each composition, makes solution mix homogeneously；
(4) present invention uses dispersant, and system can be made uniform, and suspendability increases, and does not precipitate, makes whole system physico-chemical property the same；
(5) present invention uses antioxidant, it is to avoid the materials such as tea polyphenols lose activity in preparation blood fat reducing Folium Ginkgo tea process；
(6) present invention uses flavouring agent to cover abnormal flavour in blood fat reducing Folium Ginkgo tea, improves blood fat reducing Folium Ginkgo tea palatability；
(7) present invention extracts ginkgetin rate and active component height, and technique is simple, with short production cycle；
(8) tea polyphenols activity and the extract impurity content that prepared by the present invention are high；
(9) in stevioside's purification of the present invention and decolorization, seriality is good, and resin and reagent dosage are little, and resin utilization rate is high, operates consuming time short；
(10) Folium Ginkgo tea of the present invention have the effects such as blood fat reducing, can nourish blood, and blood fat reducing effectiveness is high, make that beverage mouthfeel is good, taste is aromatic；
(11) compared with the Folium Ginkgo tea of traditional handicraft, fully achieve the problems such as de-bitter detoxification, safely and effectively the benefit of Semen Ginkgo is performed to ultimate attainment；
(12) the blood fat reducing Folium Ginkgo tea of the present invention are without any preservative and pigment, pure natural plant refines elite, breach cold water to make tea technology, utilize low-temperature extraction technology, ensure that the active component in plant is not subjected to destroy, easily being absorbed by the body after drinking, it is readily soluble and is easily absorbed the short slab solving traditional product；
(13) the blood fat reducing Folium Ginkgo tea frozen water of the present invention, cold water, brewed in hot water even can, unique flavor, facilitate drinking of each age level.
[detailed description of the invention]
For ease of being more fully understood that the present invention, being illustrated by following instance, these examples belong to protection scope of the present invention, but are not intended to protection scope of the present invention.
In an embodiment, blood fat reducing Folium Ginkgo tea, in units of weight portion, including following raw material:: Fructus Crataegi 100-400 part, Semen Cassiae 100-400 part, Rhizoma Polygoni Cuspidati 100-400 part, Radix Polygoni Multiflori 60-180 part, Ganoderma 60-180 part, Radix Et Rhizoma Rhei 40-80 part, Radix Puerariae 40-80 part, malt extract stick with paste 30-60 part, ginkgetin 1-3 part, tea polyphenols 1-3 part, stevioside's 1-3 part, vitamin 1-3 part, thickening agent 0.8-2 part, cosolvent 0.8-2 part, dispersant 0.8-2 part, antioxidant 0.8-2 part, tasty agents 0.5-1.5 part, flavouring agent 0.5-1.5 part；
Described vitamin includes one or more in vitamin A, vitamin C, vitamin D and vitamin E；
Described thickening agent includes one or more in xanthan gum, guar gum, locust bean gum and locust bean gum；
Described cosolvent is polyvinylpyrrolidone；
Described dispersant includes following component: one or more of potassium carboxymethylcellulose, agar, modified starch, polyacrylic acid potassium and potassium alginate；
Described antioxidant includes one or more in food grade antioxidant 9701, food grade antioxidant BHT, the different VC potassium of food grade antioxidant, food grade antioxidant BHA and food grade antioxidant MSK-NE150；
Described tasty agents includes one or more in inosinic acid potassium and guanyl potassium；
Described flavouring agent is methyl cyclopentenyl ketone；
The preparation method of described blood fat reducing Folium Ginkgo tea, comprises the following steps:
S1: pulverize after Fructus Crataegi, Semen Cassiae, Rhizoma Polygoni Cuspidati, the Radix Polygoni Multiflori, Ganoderma, Radix Et Rhizoma Rhei and Radix Puerariae are respectively dried, cross 40-60 mesh sieve, put in ultrasonic extraction equipment, extract after adding 1500-7000 part abundant moistening of water water, the condition extracted is: ultrasonic power is 120-180W, Extracting temperature is 40-70 DEG C, and extraction time is 30-60min；
S2: step S1 is extracted medical filtration, is sequentially added into ginkgetin, tea polyphenols, stevioside, vitamin, thickening agent, cosolvent, dispersant, antioxidant, tasty agents, flavouring agent after puckery, it is stirring 1-3min under 200-500r/min at rotating speed, be uniformly mixed liquid, and concentrating the filtrate to relative density when temperature is 64-66 DEG C is the clear paste of 1.32-1.38；
S3: the clear paste of step S2 spray drying at temperature 200-220 DEG C, to water content≤6%, is crossed the sieve of 200-400 order after pulverizing, prepares powder；
S4: the powder of step S3 and malt extract are stuck with paste, 50-100 part water adopts comminutor to make granule after being sufficiently mixed; finally prepared described granule is 134-136 DEG C in temperature; pressure is 210-230KPa, and the time is sterilizing under 20-40s, obtains blood fat reducing Folium Ginkgo tea；
The preparation method of ginkgetin described in step S2 comprises the following steps:
(1) undertaken pulverizing and cross 40-80 mesh sieve by dry Folium Ginkgo, prepare Ginkgo Leaf；
(2) adopting the water of 38-62 DEG C to carry out lixiviate the Ginkgo Leaf that step 1 prepares, in lixiviate, solid-to-liquid ratio is 1:12-14 (W/V), and extraction time is 2.5-3.5h, extracts 2-3 time, filtration, merging filtrate after extraction, prepares mixing lixiviating solution；
(3) the mixing lixiviating solution concentrate drying that step 2 is prepared, prepare lixiviate cream, the water of be used in lixiviate 5.5-6 times of volume of cream 45-55 DEG C dissolves, anhydrous ethyl acetate solvent is adopted to carry out extracting 2-3 time, continuation anhydrous ethyl acetate carries out repeatedly crystallization treatment, in crystallization process, solid-to-liquid ratio is 1:5.2-5.4 (W/V), prepares crystal crude product；
(4) crystal crude product step 3 prepared is through supercritical CO2Extracting, the condition of extraction: extraction kettle pressure is 12-18MPa, and extraction temperature is 42-45 DEG C, extraction time is 32-40min, prepares ginkgetin；
The preparation method of tea polyphenols described in step S2 comprises the following steps:
A () will cross 40-80 mesh sieve after group's sieve tea pulverizing, mix for 1:16-20 in mass ratio with the ethanol water that mass fraction is 40%-60%, extract 2-3 time at temperature is 36-40 DEG C, each 20-30min, filters, merging filtrate, concentration, prepares tea polyphenols crude extract；
B the tea polyphenols crude extract that step a prepares is joined in KCl solution by (), pH regulator is to 6.8-7.2, it is removing impurity under 4000-4500r/min at centrifugal rotational speed, adopts 0.45 μm of filter membrane at temperature is 34-36 DEG C, the solution after being centrifuged to be filtered, prepare filtrate；
(c) by step b prepare filtrate ether extraction, freezing, after drying prepare tea polyphenols；
The preparation method of stevioside described in step S2 comprises the following steps:
(A) being dipped in water after being pulverized by Stevia leaves and soak 1-1.2.h, solid-to-liquid ratio is 1:20-25 (W/V), is 100-120W at ultrasonic power, and Extracting temperature is 40-60 DEG C, and extraction time is extract under 20-30min, prepares Folium Stevlae Rebaudianae medicinal liquid；
(B) the Folium Stevlae Rebaudianae medicinal liquid that step A prepares is crossed the filter cloth of 120-180 order, prepares Folium Stevlae Rebaudianae filtrate；
(C) NaAl (SO of filtrate percentage by weight 0.8%-1% is added to the step B Folium Stevlae Rebaudianae filtrate prepared4)2Ca (OH) with filtrate percentage by weight 1%-1.4%2, tune pH value is 6.8-7.2, at temperature 44-48 DEG C, stands 3.2-3.5h, prepares the solution after the removal of impurity；
(D) by the solution frit after the step C removal of impurity prepared and in being concentrated into every milliliter containing stevioside 10%-25%, macroporous adsorbent resin ADS-8 separating-purifying is adopted to prepare the liquid of stevioside, condition is: resolving agent is the alcoholic solution of 55%-65%, its consumption is 1-3 times of macroporous adsorbent resin volume, water wash zone is deionized water, absorption with macroporous adsorbent resin regenerated solvent is the KOH solution of 2%-4%, adsorption zone flow velocity 6-10BV/h, desorption zone flow velocity 15-20BV/h, water wash zone flow velocity 20-25BV/h, renewing zone flow velocity 6-8BV/h, switching time is 700-750s, temperature is 40-50 DEG C, pressure is 0.4-0.9MPa；
(E) stevioside's liquid that step D prepares is concentrated, at temperature is 200-220 DEG C, carries out spray drying, prepare stevioside.
Below by more specifically embodiment, the present invention will be described.
Embodiment 1
A kind of blood fat reducing Folium Ginkgo tea, in units of weight portion, including following raw material: Fructus Crataegi 250 parts, Semen Cassiae 250 parts, Rhizoma Polygoni Cuspidati 250 parts, the Radix Polygoni Multiflori 120 parts, Ganoderma 120 parts, Radix Et Rhizoma Rhei 60 parts, Radix Puerariae 60 parts, malt extract paste 50 parts, ginkgetin 2 parts, tea polyphenols 2 parts, stevioside 2 parts, vitamin 2 parts, thickening agent 1.5 parts, cosolvent 1.5 parts, dispersant 1.5 parts, 1.5 parts of antioxidant, tasty agents 1 part, flavouring agent 1 part；
Described vitamin is vitamin A, vitamin C, vitamin D, vitamin E；
Described thickening agent is xanthan gum, guar gum, locust bean gum, locust bean gum；
Described cosolvent is polyvinylpyrrolidone；
Described dispersant consists of the following composition: potassium carboxymethylcellulose, agar, modified starch；
Described antioxidant is the different VC potassium of food grade antioxidant, food grade antioxidant BHA, food grade antioxidant MSK-NE150；
Described tasty agents is inosinic acid potassium, guanyl potassium；
Described flavouring agent is methyl cyclopentenyl ketone；
The preparation method of described blood fat reducing Folium Ginkgo tea, comprises the following steps:
S1: by Fructus Crataegi；Semen Cassiae, Rhizoma Polygoni Cuspidati, the Radix Polygoni Multiflori, Ganoderma, Radix Et Rhizoma Rhei, Radix Puerariae, be respectively dried after pulverize, cross 60 mesh sieves, put in ultrasonic extraction equipment, extract after adding 5000 parts of abundant moistenings of water, the condition extracted is: ultrasonic power is 150W, and Extracting temperature is 100 DEG C, and extraction time is 50min；
S2: step S1 is extracted medical filtration, adds ginkgetin, tea polyphenols, stevioside, vitamin, thickening agent, cosolvent, dispersant, antioxidant, tasty agents, flavouring agent after puckery, it is stirring 2min under 300r/min at rotating speed, be uniformly mixed liquid, and concentrating the filtrate to relative density when temperature is 65 DEG C is the clear paste of 1.35；
S3: be 5% to water content by the clear paste of step S2 spray drying at 210 DEG C, crosses the sieve of 300 orders, prepares powder after pulverizing；
S4: the powder of step S3 and malt extract stuck with paste, 80 parts of water mixs and make granule, is finally 135 DEG C prepared described granule in temperature, and pressure is 220KPa, and the time is sterilizing under 30s, prepared blood fat reducing Folium Ginkgo tea；
The preparation method of ginkgetin described in step S2 comprises the following steps:
(1) undertaken pulverizing and cross 60 mesh sieve by dry Folium Ginkgo, prepare Ginkgo Leaf；
(2) adopting the water of 50 DEG C to carry out lixiviate the Ginkgo Leaf that step 1 prepares, in lixiviate, solid-to-liquid ratio is 1:13 (W/V), and extraction time is 3h, extracts 2 times, filtration, merging filtrate after extraction, prepares mixing lixiviating solution；
(3) the mixing lixiviating solution concentrate drying that step 2 is prepared, prepare lixiviate cream, the water of be used in 5.8 times of volumes of lixiviate cream 50 DEG C dissolves, anhydrous ethyl acetate solvent is adopted to carry out extracting 2 times, continuation anhydrous ethyl acetate carries out repeatedly crystallization treatment, in crystallization process, solid-to-liquid ratio is 1:5.3 (W/V), prepares crystal crude product；
(4) crystal crude product step 3 prepared is through supercritical CO2Extracting, the condition of extraction: extraction kettle pressure is 15MPa, extraction temperature is 43 DEG C, and extraction time is 36min, prepares ginkgetin；
The preparation method of tea polyphenols described in step S2 comprises the following steps:
A () will cross 60 mesh sieves after group's sieve tea pulverizing, mix for 1:18 in mass ratio with the ethanol water that mass fraction is 50%, be extract 2 times at 38 DEG C in temperature, and each 25min filters, merging filtrate, concentration, prepared tea polyphenols crude extract；
B the tea polyphenols crude extract that step a prepares is joined in KCl solution by (), pH regulator, to 7, is removing impurity under 4200r/min at centrifugal rotational speed, and adopting 0.45 μm of filter membrane is at 35 DEG C, the solution after being centrifuged is filtered in temperature, prepares filtrate；
(c) by step b prepare filtrate ether extraction, freezing, after drying prepare tea polyphenols；
The preparation method of stevioside described in step S2 comprises the following steps:
(A) being dipped in water after being pulverized by Stevia leaves and soak 1.1h, solid-to-liquid ratio is 1:22 (W/V), is 110W at ultrasonic power, and Extracting temperature is 50 DEG C, and extraction time is extract under 25min, prepares Folium Stevlae Rebaudianae medicinal liquid；
(B) the Folium Stevlae Rebaudianae medicinal liquid that step A prepares is crossed the filter cloth of 150 orders, prepares Folium Stevlae Rebaudianae filtrate；
(C) NaAl (SO of filtrate percentage by weight 0.9% is added to the step B Folium Stevlae Rebaudianae filtrate prepared4)2Ca (OH) with filtrate percentage by weight 1.2%2, adjusting pH value is 7, at temperature 46 DEG C, stands 3.3h, prepares the solution after the removal of impurity；
(D) by the solution frit after the step C removal of impurity prepared and in being concentrated into every milliliter containing stevioside 32%, macroporous adsorbent resin ADS-8 separating-purifying is adopted to prepare the liquid of stevioside, condition is: resolving agent is the alcoholic solution of 60%, its consumption is 2 times of macroporous adsorbent resin volume, water wash zone is deionized water, absorption with macroporous adsorbent resin regenerated solvent is the KOH solution of 3%, adsorption zone flow velocity 8BV/h, desorption zone flow velocity 18BV/h, water wash zone flow velocity 22BV/h, renewing zone flow velocity 7BV/h, switching time is 720s, temperature is 45 DEG C, pressure is 0.7MPa；
(E) stevioside's liquid that step D prepares is concentrated, be at 210 DEG C, carry out spray drying in temperature, prepare stevioside.
Embodiment 2
A kind of blood fat reducing Folium Ginkgo tea, in units of weight portion, including following raw material: Fructus Crataegi 100 parts, Semen Cassiae 100 parts, Rhizoma Polygoni Cuspidati 100 parts, the Radix Polygoni Multiflori 60 parts, Ganoderma 60 parts, Radix Et Rhizoma Rhei 40 parts, Radix Puerariae 40 parts, malt extract paste 30 parts, ginkgetin 1 part, tea polyphenols 1 part, stevioside 1 part, vitamin 1 part, thickening agent 0.8 part, cosolvent 0.8 part, dispersant 0.8 part, 0.8 part of antioxidant, tasty agents 0.5 part, flavouring agent 0.5 part；
Described vitamin is vitamin；
Described thickening agent is xanthan gum；
Described cosolvent is polyvinylpyrrolidone；
Described dispersant consists of the following composition: modified starch, polyacrylic acid potassium and potassium alginate；
Described antioxidant is food grade antioxidant 9701；
Described tasty agents is inosinic acid potassium；
Described flavouring agent is methyl cyclopentenyl ketone；
The preparation method of described blood fat reducing Folium Ginkgo tea, comprises the following steps:
S1: by Fructus Crataegi；Semen Cassiae, Rhizoma Polygoni Cuspidati, the Radix Polygoni Multiflori, Ganoderma, Radix Et Rhizoma Rhei, Radix Puerariae, be respectively dried after pulverize, cross 40 mesh sieves, put in ultrasonic extraction equipment, extract after adding 1500 parts of abundant moistenings of water, the condition extracted is: ultrasonic power is 120W, and Extracting temperature is 40 DEG C, and extraction time is 60min；
S2: step S1 is extracted medical filtration, adds ginkgetin, tea polyphenols, stevioside, vitamin, thickening agent, cosolvent, dispersant, antioxidant, tasty agents, flavouring agent after puckery, it is stirring 3min under 200r/min at rotating speed, be uniformly mixed liquid, and concentrating the filtrate to relative density when temperature is 64 DEG C is the clear paste of 1.32；
S3: be 6% to water content by the clear paste of step S2 spray drying at 200 DEG C, crosses the sieve of 200 orders, prepares powder after pulverizing；
S4: the powder of step S3 and malt extract stuck with paste, 50 parts of water mixs and make granule, is finally 134 DEG C prepared described granule in temperature, and pressure is 210KPa, and the time is sterilizing under 40s, prepared blood fat reducing Folium Ginkgo tea；
The preparation method of ginkgetin described in step S2 comprises the following steps:
(1) undertaken pulverizing and cross 40 mesh sieve by dry Folium Ginkgo, prepare Ginkgo Leaf；
(2) adopting the water of 38 DEG C to carry out lixiviate the Ginkgo Leaf that step 1 prepares, in lixiviate, solid-to-liquid ratio is 1:12 (W/V), and extraction time is 3.5h, extracts 2 times, filtration, merging filtrate after extraction, prepares mixing lixiviating solution；
(3) the mixing lixiviating solution concentrate drying that step 2 is prepared, prepare lixiviate cream, the water of be used in 5.5 times of volumes of lixiviate cream 45 DEG C dissolves, anhydrous ethyl acetate solvent is adopted to carry out extracting 2 times, continuation anhydrous ethyl acetate carries out repeatedly crystallization treatment, in crystallization process, solid-to-liquid ratio is 1:5.2 (W/V), prepares crystal crude product；
(4) crystal crude product step 3 prepared is through supercritical CO2Extracting, the condition of extraction: extraction kettle pressure is 12MPa, extraction temperature is 42 DEG C, and extraction time is 40min, prepares ginkgetin；
The preparation method of tea polyphenols described in step S2 comprises the following steps:
A () will cross 40 mesh sieves after group's sieve tea pulverizing, mix for 1:16 in mass ratio with the ethanol water that mass fraction is 40%, be extract 2 times at 36 DEG C in temperature, and each 30min filters, merging filtrate, concentration, prepared tea polyphenols crude extract；
B the tea polyphenols crude extract that step a prepares is joined in KCl solution by (), pH regulator, to 6.8, is removing impurity under 4000-/min at centrifugal rotational speed, and adopting 0.45 μm of filter membrane is at 34 DEG C, the solution after being centrifuged is filtered in temperature, prepares filtrate；
(c) by step b prepare filtrate ether extraction, freezing, after drying prepare tea polyphenols；
The preparation method of stevioside described in step S2 comprises the following steps:
(A) being dipped in water after being pulverized by Stevia leaves and soak 1h, solid-to-liquid ratio is 1:20 (W/V), is 100W at ultrasonic power, and Extracting temperature is 40 DEG C, and extraction time is extract under 30min, prepares Folium Stevlae Rebaudianae medicinal liquid；
(B) the Folium Stevlae Rebaudianae medicinal liquid that step A prepares is crossed the filter cloth of 120 orders, prepares Folium Stevlae Rebaudianae filtrate；
(C) NaAl (SO of filtrate percentage by weight 0.8% is added to the step B Folium Stevlae Rebaudianae filtrate prepared4)2Ca (OH) with filtrate percentage by weight 1%2, adjusting pH value is 6.8, at temperature 44 DEG C, stands 3.2-3.5h, prepares the solution after the removal of impurity；
(D) by the solution frit after the step C removal of impurity prepared and in being concentrated into every milliliter containing stevioside 10%, macroporous adsorbent resin ADS-8 separating-purifying is adopted to prepare the liquid of stevioside, condition is: resolving agent is the alcoholic solution of 55%, its consumption is 1 times of macroporous adsorbent resin volume, water wash zone is deionized water, absorption with macroporous adsorbent resin regenerated solvent is the KOH solution of 2%, adsorption zone flow velocity 6BV/h, desorption zone flow velocity 15BV/h, water wash zone flow velocity 20BV/h, renewing zone flow velocity 6BV/h, switching time is 700s, temperature is 40 DEG C, pressure is 0.4MPa；
(E) stevioside's liquid that step D prepares is concentrated, be at 200 DEG C, carry out spray drying in temperature, prepare stevioside.
Embodiment 3
A kind of blood fat reducing Folium Ginkgo tea, in units of weight portion, including following raw material: Fructus Crataegi 400 parts, Semen Cassiae 400 parts, Rhizoma Polygoni Cuspidati 400 parts, the Radix Polygoni Multiflori 180 parts, Ganoderma 180 parts, Radix Et Rhizoma Rhei 80 parts, Radix Puerariae 80 parts, malt extract paste 60 parts, ginkgetin 3 parts, tea polyphenols 3 parts, stevioside 3 parts, vitamin 3 parts, thickening agent 2 parts, cosolvent 2 parts, dispersant 2 parts, 2 parts of antioxidant, tasty agents 1.5 parts, fragrance 1.5 parts；
Described vitamin is vitamin C；
Described thickening agent is guar gum；
Described cosolvent is polyvinylpyrrolidone；
Described dispersant consists of the following composition: potassium carboxymethylcellulose, modified starch, potassium alginate；
Described antioxidant is food grade antioxidant BHT；
Described tasty agents is inosinic acid potassium；
Described flavouring agent is methyl cyclopentenyl ketone；
The preparation method of described blood fat reducing Folium Ginkgo tea, comprises the following steps:
S1: by Fructus Crataegi；Semen Cassiae, Rhizoma Polygoni Cuspidati, the Radix Polygoni Multiflori, Ganoderma, Radix Et Rhizoma Rhei, Radix Puerariae are pulverized after being respectively dried, and cross 60 mesh sieves, put in ultrasonic extraction equipment, extract after adding 7000 parts of abundant moistenings of water, the condition extracted is: ultrasonic power is 180W, and Extracting temperature is 70 DEG C, and extraction time is 30min；
S2: step S1 is extracted medical filtration, adds ginkgetin, tea polyphenols, stevioside, vitamin, thickening agent, cosolvent, dispersant, antioxidant, tasty agents, flavouring agent after puckery, it is stirring 1min under 500r/min at rotating speed, be uniformly mixed liquid, and concentrating the filtrate to relative density when temperature is 66 DEG C is the clear paste of 1.38；
S3: be 4% to water content by the clear paste of step S2 spray drying at 220 DEG C, crosses the sieve of 400 orders, prepares powder after pulverizing；
S4: the powder of step S3 and malt extract stuck with paste, 100 parts of water mixs and make granule, is finally 136 DEG C prepared described granule in temperature, and pressure is 230KPa, and the time is sterilizing under 40s, prepared blood fat reducing Folium Ginkgo tea；
The preparation method of ginkgetin described in step S2 comprises the following steps:
(1) undertaken pulverizing and cross 80 mesh sieve by dry Folium Ginkgo, prepare Ginkgo Leaf；
(2) adopting the water of 62 DEG C to carry out lixiviate the Ginkgo Leaf that step 1 prepares, in lixiviate, solid-to-liquid ratio is 1:14 (W/V), and extraction time is 2.5h, extracts 3 times, filtration, merging filtrate after extraction, prepares mixing lixiviating solution；
(3) the mixing lixiviating solution concentrate drying that step 2 is prepared, prepare lixiviate cream, the water of be used in 6 times of volumes of lixiviate cream 55 DEG C dissolves, anhydrous ethyl acetate solvent is adopted to carry out extracting 3 times, continuation anhydrous ethyl acetate carries out repeatedly crystallization treatment, in crystallization process, solid-to-liquid ratio is 1:5.4 (W/V), prepares crystal crude product；
(4) crystal crude product step 3 prepared is through supercritical CO2Extracting, the condition of extraction: extraction kettle pressure is 18MPa, extraction temperature is 45 DEG C, and extraction time is 32min, prepares ginkgetin；
The preparation method of tea polyphenols described in step S2 comprises the following steps:
A () will cross 80 mesh sieves after group's sieve tea pulverizing, mix for 1:20 in mass ratio with the ethanol water that mass fraction is 60%, be extract 3 times at 40 DEG C in temperature, and each 20min filters, merging filtrate, concentration, prepared tea polyphenols crude extract；
B the tea polyphenols crude extract that step a prepares is joined in KCl solution by (), pH regulator, to 7.2, is removing impurity under 4500r/min at centrifugal rotational speed, and adopting 0.45 μm of filter membrane is at 36 DEG C, the solution after being centrifuged is filtered in temperature, prepares filtrate；
(c) by step b prepare filtrate ether extraction, freezing, after drying prepare tea polyphenols；
The preparation method of stevioside described in step S2 comprises the following steps:
(A) being dipped in water after being pulverized by Stevia leaves and soak 1.2h, solid-to-liquid ratio is 1:25 (W/V), is 120W at ultrasonic power, and Extracting temperature is 60 DEG C, and extraction time is extract under 20min, prepares Folium Stevlae Rebaudianae medicinal liquid；
(B) the Folium Stevlae Rebaudianae medicinal liquid that step A prepares is crossed the filter cloth of 180 orders, prepares Folium Stevlae Rebaudianae filtrate；
(C) NaAl (SO of filtrate percentage by weight 1% is added to the step B Folium Stevlae Rebaudianae filtrate prepared4)2Ca (OH) with filtrate percentage by weight 1.4%2, adjusting pH value is 7.2, at temperature 48 DEG C, stands 3.2-3.5h, prepares the solution after the removal of impurity；
(D) by the solution frit after the step C removal of impurity prepared and in being concentrated into every milliliter containing stevioside 25%, macroporous adsorbent resin ADS-8 separating-purifying is adopted to prepare the liquid of stevioside, condition is: resolving agent is the alcoholic solution of 65%, its consumption is 3 times of macroporous adsorbent resin volume, water wash zone is deionized water, absorption with macroporous adsorbent resin regenerated solvent is the KOH solution of 4%, adsorption zone flow velocity 10BV/h, desorption zone flow velocity 20BV/h, water wash zone flow velocity 25BV/h, renewing zone flow velocity 8BV/h, switching time is 750s, temperature is 50 DEG C, pressure is 0.9MPa；
(E) stevioside's liquid that step D prepares is concentrated, be at 220 DEG C, carry out spray drying in temperature, prepare stevioside.
Above content is it cannot be assumed that specific embodiment of the invention is confined to these explanations; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the scope of patent protection that the present invention is determined by submitted claims.
Claims (8)
1. blood fat reducing Folium Ginkgo tea, it is characterized in that, in units of weight portion, including following raw material: Fructus Crataegi 100-400 part, Semen Cassiae 100-400 part, Rhizoma Polygoni Cuspidati 100-400 part, Radix Polygoni Multiflori 60-180 part, Ganoderma 60-180 part, Radix Et Rhizoma Rhei 40-80 part, Radix Puerariae 40-80 part, malt extract stick with paste 30-60 part, ginkgetin 1-3 part, tea polyphenols 1-3 part, stevioside's 1-3 part, vitamin 1-3 part, thickening agent 0.8-2 part, cosolvent 0.8-2 part, dispersant 0.8-2 part, antioxidant 0.8-2 part, tasty agents 0.5-1.5 part, flavouring agent 0.5-1.5 part；
The preparation method of described blood fat reducing Folium Ginkgo tea, comprises the following steps:
S1: pulverize after Fructus Crataegi, Semen Cassiae, Rhizoma Polygoni Cuspidati, the Radix Polygoni Multiflori, Ganoderma, Radix Et Rhizoma Rhei, Radix Puerariae are respectively dried, cross 40-60 mesh sieve, put in ultrasonic extraction equipment, carry out after adding the 1500-7000 abundant moistening of part water extracting medicinal liquid, the condition extracted is: ultrasonic power is 120-180W, Extracting temperature is 40-70 DEG C, and extraction time is 30-60min；
S2: step S1 is extracted medical filtration, is sequentially added into ginkgetin, tea polyphenols, stevioside, vitamin, thickening agent, cosolvent, dispersant, antioxidant, tasty agents, flavouring agent after puckery, it is stirring 1-3min under 200-500r/min at rotating speed, be uniformly mixed liquid, and concentrating the filtrate to relative density when temperature is 64-66 DEG C is the clear paste of 1.32-1.38；
S3: the clear paste of step S2 spray drying at temperature 200-220 DEG C, to water content≤6%, is crossed the sieve of 200-400 order after pulverizing, prepares powder；
S4: the powder of step S3 and malt extract are stuck with paste, 50-100 part water adopts comminutor to make granule after being sufficiently mixed; finally prepared described granule is 134-136 DEG C in temperature; pressure is 210-230KPa, and the time is sterilizing under 20-40s, obtains blood fat reducing Folium Ginkgo tea；
The preparation method of ginkgetin described in step S2 comprises the following steps:
(1) undertaken pulverizing and cross 40-80 mesh sieve by dry Folium Ginkgo, prepare Ginkgo Leaf；
(2) adopting the water of 38-62 DEG C to carry out lixiviate the Ginkgo Leaf that step 1 prepares, in lixiviate, solid-to-liquid ratio is 1:12-14 (W/V), and extraction time is 2.5-3.5h, extracts 2-3 time, filtration, merging filtrate after extraction, prepares mixing lixiviating solution；
(3) the mixing lixiviating solution concentrate drying that step 2 is prepared, prepare lixiviate cream, the water of be used in lixiviate 5.5-6 times of volume of cream 45-55 DEG C dissolves, anhydrous ethyl acetate solvent is adopted to carry out extracting 2-3 time, continuation anhydrous ethyl acetate carries out repeatedly crystallization treatment, in crystallization process, solid-to-liquid ratio is 1:5.2-5.4 (W/V), prepares crystal crude product；
(4) crystal crude product step 3 prepared is through supercritical CO2Extracting, the condition of extraction: extraction kettle pressure is 12-18MPa, and extraction temperature is 42-45 DEG C, extraction time is 32-40min, prepares ginkgetin；
The preparation method of tea polyphenols described in step S2 comprises the following steps:
A () will cross 40-80 mesh sieve after group's sieve tea pulverizing, mix for 1:16-20 in mass ratio with the ethanol water that mass fraction is 40%-60%, extract 2-3 time at temperature is 36-40 DEG C, each 20-30min, filters, merging filtrate, concentration, prepares tea polyphenols crude extract；
B the tea polyphenols crude extract that step a prepares is joined in KCl solution by (), pH regulator is to 6.8-7.2, it is removing impurity under 4000-4500r/min at centrifugal rotational speed, adopts 0.45 μm of filter membrane at temperature is 34-36 DEG C, the solution after being centrifuged to be filtered, prepare filtrate；
(c) by step b prepare filtrate ether extraction, freezing, after drying prepare tea polyphenols；
The preparation method of stevioside described in step S2 comprises the following steps:
(A) being dipped in water after being pulverized by Stevia leaves and soak 1-1.2.h, solid-to-liquid ratio is 1:20-25 (W/V), is 100-120W at ultrasonic power, and Extracting temperature is 40-60 DEG C, and extraction time is extract under 20-30min, prepares Folium Stevlae Rebaudianae medicinal liquid；
(B) the Folium Stevlae Rebaudianae medicinal liquid that step A prepares is crossed the filter cloth of 120-180 order, prepares Folium Stevlae Rebaudianae filtrate；
(C) NaAl (SO of filtrate percentage by weight 0.8%-1% is added to the step B Folium Stevlae Rebaudianae filtrate prepared4)2Ca (OH) with filtrate percentage by weight 1%-1.4%2, tune pH value is 6.8-7.2, at temperature 44-48 DEG C, stands 3.2-3.5h, prepares the solution after the removal of impurity；
(D) by the solution frit after the step C removal of impurity prepared and in being concentrated into every milliliter containing stevioside 10%-25%, macroporous adsorbent resin ADS-8 separating-purifying is adopted to prepare the liquid of stevioside, condition is: resolving agent is the alcoholic solution of 55%-65%, its consumption is 1-3 times of macroporous adsorbent resin volume, water wash zone is deionized water, absorption with macroporous adsorbent resin regenerated solvent is the KOH solution of 2%-4%, adsorption zone flow velocity 6-10BV/h, desorption zone flow velocity 15-20BV/h, water wash zone flow velocity 20-25BV/h, renewing zone flow velocity 6-8BV/h, switching time is 700-750s, temperature is 40-50 DEG C, pressure is 0.4-0.9MPa；
(E) stevioside's liquid that step D prepares is concentrated, at temperature is 200-220 DEG C, carries out spray drying, prepare stevioside.
2. blood fat reducing Folium Ginkgo tea according to claim 1, it is characterised in that described vitamin includes one or more in vitamin A, vitamin C, vitamin D and vitamin E.
3. blood fat reducing Folium Ginkgo tea according to claim 1, it is characterised in that described thickening agent includes one or more in xanthan gum, guar gum, locust bean gum and locust bean gum.
4. blood fat reducing Folium Ginkgo tea according to claim 1, it is characterised in that described cosolvent is polyvinylpyrrolidone.
5. blood fat reducing Folium Ginkgo tea according to claim 1, it is characterised in that described dispersant includes following component: one or more in potassium carboxymethylcellulose, agar, modified starch, polyacrylic acid potassium and potassium alginate.
6. blood fat reducing Folium Ginkgo tea according to claim 1, it is characterized in that, described antioxidant includes one or more in food grade antioxidant 9701, food grade antioxidant BHT, the different VC potassium of food grade antioxidant, food grade antioxidant BHA and food grade antioxidant MSK-NE150.
7. blood fat reducing Folium Ginkgo tea according to claim 1, it is characterised in that described tasty agents includes one or more in inosinic acid potassium and guanyl potassium.
8. blood fat reducing Folium Ginkgo tea according to claim 1, it is characterised in that described flavouring agent is methyl cyclopentenyl ketone.
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Application publication date: 20160720 |