52results about How to "Long extraction time" patented technology

The invention relates to a method for preparing an antioxidative active extractive of sweet potato leaves, and belonging to the field of agriculture products processing. The method comprises the following steps: drying and crushing fresh sweet potato leaves; performing microwave assistant extraction after the decoloring and degreasing treatment is carried out; decompressing and concentrating extract in vacuum; chromatographing through a column, and absorbing by maroporous resin; collecting eluent; decompressing and concentrating the eluent in vacuum to obtain extract of the sweet potato leaves; and atomizing and drying the extract to obtain powdered extractive of the sweet potato leaves. The product is powdered, has the unique smell of the sweet potato leaves, contains 65 to 75 percent of total phenol, and contains chlorogenic acid and 3,5-O-dicaffeoylquinic acid. The method adopts mass waste sweet potato leaves to prepare the extractive with strong antioxidative activity, turns waste into wealth, is a green industry, has simple process, no need of larger equipment investment and high extracting rate of antioxidative active substances, and is applicable to industrial production.

The invention relates to the field of agricultural fungicide, in particular to a botanical fungicide, an extracting method and the usage thereof. The botanical fungicide adopts extracts of plant raw materials such as sisal leaves, wild chrysanthemum, Chinese parasol leaves, ginger, bitter gourd or the like; the original preparation technology is improved, and the botanical fungicide is used for controlling agricultural diseases and has good environmental compatibility; the three-time extracting technique is adopted, and ultrasound-assisted extraction is applied, so that the maximum extraction capacity of active ingredient can be ensured; the technique is simple and seldom affects the environment, and the extracts have good effect on sterilization and bacteriostasis.

The invention relates to a method for extracting polysaccharides with cell immunocompetence from needle mushroom root waste materials and belongs to the field of biomedicine. The method comprises the steps of: drying and crushing needle mushroom roots to prepare ultrafine needle mushroom root powder, wherein the needle mushroom roots are the cut root parts as waste materials in a needle mushroom processing course; adding a proper amount of 85% ethanol to the crushed ultrafine powder to soak for 2 hours at room temperature; centrifuging to collect a precipitate; adding deionized water according to a ratio of water to material namely 28mL/g based on the raw material as a reference; carrying out ultrasonic treatment for 19.8 minutes at the power of 680W; centrifuging to collect a supernate; carrying out rotary evaporation on the supernate to obtain a proper amount of at room temperature; adding anhydrous ethanol the volume of which is 4 times that of a concentrated solution in the concentrated solution; precipitating for 12 hours at 4 DEG C; centrifuging to collect a precipitate; and placing the precipitate in an oven of 60 DEG C to bake so as to obtain crude needle mushroom root polysaccharide. An ultrasonic wave extraction technology is adopted, and the polysaccharide yield is 16.20%. Compared with the traditional hot water extraction, by using the method disclosed by the invention, the yield is improved by 70%, and the time is shortened by 92%.

The invention discloses a device and a method for active hole drilling and sealing. The device comprises a gas extraction pipe, a grout injection pipe, a grout return pipe, an inner-block grout disk, an outer-block grout disk, a sealing piston, a gravity hammer and a grout storage tank, wherein the bottom of the grout storage tank is provided with a grout injection opening which is controlled by a grout injection valve and a grout supplementing opening which is controlled by a grout supplementing valve. An inorganic flexible paste body is injected into a drilling space between the inner-block grout disk and the outer-block grout disk through the grout injection pipe, the grout return pipe is connected with the grout storage tank when the grout return pipe is subjected to grout return, the grout injection valve can be opened, the inorganic flexible paste body can be squeezed out by applying sustained pressure to the inorganic flexible paste body in the grout storage tank by the gravity hammer, cracks added around a drilling hole can be sealed and blocked, and the active hole drilling and sealing of the drilling hole can be realized. The device and the method, which are disclosed by the invention, have the advantages that the structure is simple, the operation is convenient, the cost is low, and the using effect is good.

The invention discloses an automatic patent keyword extraction method, and belongs to the technical field of text retrieval. The method comprises the following steps of electronic document importing,retrieving and querying, title analysis, text analysis and keyword exporting, wherein text analysis comprises document generation, word recognition, word retrieval, word comparison, word acquisition,word displaying and word saving. According to the method, by extracting keywords in a patent text, patent retrieving and querying can be more easily completed.

The invention provides a method for detecting content of heavy metals in a plant sample, particularly a method for treating a to-be-detected sample in a sample pretreatment step by using dilute acid. Compared with a national standard method, the dilute acid method has wide application value, is easy and convenient to operate and rapid; and the national standard method is long in extraction time and easy to pollute and lose, and the dilute acid method is easy and wide to popularize. According to the method disclosed by the invention, heavy metal elements in vegetables are analyzed and measured, and the method has great significance for rapidly detecting the heavy metal elements in the vegetables.

The invention relates to a method for extracting effective component of traditional Chinese medicine, with dynamic overflow continuous reverse-flow method, wherein said method uses several extractors, while each extractor works independently and they use active overflow method, to transfer liquid continuously. Compared with traditional method, the invention improves extracting speed, reduce solvent consumption, reduce following energy consumption and improve efficiency. The invention can reduce extracting temperature, etc. And the invention comprise several pots, heater, condenser, tubes, pump and value which control the active overflow between pots, and the meter element controlling the balance of whole device.

The present application relates to a method for simultaneously detecting four isomers of resveratrol in peanut by using ultra performance liquid chromatography during the operation procedure and accurately controlling the detection conditions. The method of the invention can achieve continuous sample injection, and perform sample analysis in batch. The detection time for each sample is only about 10 min, which greatly improves the detection efficiency. Further, the ultra performance liquid chromatography has high sensitivity and a low detection limit. The method of the invention adopts ethanol extraction under heating in the earlier stage of extraction, and controls the temperature of the extraction, so as to achieve effective extraction of four isomers of resveratrol, time saving, and efficient extraction and separation.

The invention discloses a method for preparing fructus amomi volatile oil. The method comprises the following steps of taking dry fructus amomi medical material, and crushing into crude powder of 20 meshes-50 meshes after weighing, placing into a 100-mesh filter bag, and filling the filter bag into a material column of a subcritical extraction kettle; adding 1,1,1,2-tetrafluoroethane which is 4-20 times the weight of the fructus amomi into the extraction kettle as an extracting agent, extracting for 20 minutes-60 minutes under the conditions that the pressure is 0.3-1.6 Mpa and temperature is 20 DEG C-50 DEG C, placing extracting liquor into a separating kettle, evaporating and recycling the extracting agent for use under pressure of 0.04-0.1 Mpa, wherein residual liquor is fructus amomi volatile oil extracting liquor; repeating the extracting process twice-five times, combining and layering the fructus amomi volatile oil extracting liquor each time, and then carrying out oil-water separation, wherein the obtained oil phase is fructus amomi volatile oil, and yield of the fructus amomi volatile oil is not less than 90%. The fructus amomi volatile oil prepared by the method is high in yield, low in cost, good in perception and suitable for large-scale industrial production of the fructus amomi volatile oil.

The invention discloses green and healthy cakes. The green and healthy cakes are prepared form the following raw materials: low-gluten flour, highland barley flour, eggs, avocado oil, gentiooligosaccharide, lactitol, skimmed milk powder, green juice, almond kernels, table salt, kefir, lysozyme and water. The green and healthy cakes provided by the invention are rationally proportioned; and the green and healthy cakes are fine, smooth and soft in texture, mellow in refreshing aroma, bright green in color and luster, balanced in nutrition and easy to absorb; the fat contents of the green and healthy cakes are reduced by 41%; the green and healthy cakes are free of sucrose; and the green and healthy cakes are capable of promoting metabolism, expelling toxicants, keeping youth, enhancing immunity, resisting oxidation, resisting senescence and revisiting cancer. Enzymatic hydrolysis and fermentation are carried out on the green juice sources, so that the juice yield is improved by 13%; and the prepared green juice is sour-sweet in taste and naturally green in color, and has the effect of keeping the body healthy. The green and healthy cakes are steamed with separated water, so that harmful substances are reduced, and volumes of the cakes do not change before and after cooling; and the prepared cakes are fine, smooth and soft in texture as well as non-greasy in taste. The highland barley powder is puffed, and ultrafine crushing is performed on the puffed highland barley; thus, the prepared highland barley powder is high in nutrient content and capable of promoting gastrointestinal functions as well as increasing water retaining capacity of the cakes; moreover, the extraction time of the high land barley is shortened to five sixths of the original extraction time, and the powder yield is improved by 14%.

The invention discloses a method and device for extracting and scattering tobacco stems synchronously. The method comprises the step one of carrying out feeding, wherein the tobacco stems and solvent are fed into a storage tank according to the set proportion; the step two of carrying out stirring, wherein a push type paddle stirrer is started, and the materials in the step one are stirred and mixed uniformly to obtain a tobacco stem mixture; the step three of carrying out scattering while carrying out extracting, wherein a scattering machine is started, the tobacco stem mixture in the storage tank enters the scattering machine under action of stirring and driving force of the push type paddle stirrer, and then flows back to the storage tank through a circulating pulp pipe by utilizing the centrifugal pumping action generated by a rotor and pulp separating blades, so that the materials are extracted and scattered in a circulating mode; the step four of carrying out secondary extracting, wherein the scattering machine is closed for carrying out secondary extraction. While extracting and scattering are completed, the purposes of high extracting efficiency, good scattering quality and low energy consumption are achieved.

The invention discloses a method and system for extracting sludge protein by a focused pulsed electric field. According to the method and system, sludge that is homogenized and flowable flows throughdifferent electric field zones, generated by the staggering of cathode and anode plates, in a focused pulsed electric field sludge reactor; the treated sludge flows out from the reactor, and then is circulated and returned by a circulating pump; after thorough treatment, separation is performed through a high-speed centrifuge; the pH value is adjusted to precipitate protein; and then protein solidis obtained by a freezing vacuum belt type filter. The method and the system utilize electroporation effect of the focused pulsed electric field on biological cells to break sludge cells so that protein in the biological cells can be effectively released. The method and the system have advantages of low energy consumption, fast response, small consumption of pharmaceuticals, and capability of preparing the extracted biological protein with high purity and no side effect.

The invention provides a huperzine A production method suitable for industrial production and relates to a huperzine A production method. The huperzine A production method comprises the following specific steps of pretreatment of raw materials, extraction, centrifugation, ultra-filtration, nano-filtration, PH value regulation, concentration, microwave drying and smashing. The huperzine A production method adopts a membrane technology for separation and purification. Compared with other purification modes such as macroporous resin adsorption and solvent extraction, the huperzine A production method has the advantages of being safe, environmentally friendly and capable of saving energy, only using a pure water solvent, not adopting an organic solvent and the like, the operation is simple, the product is safe, environmentally friendly, good and inexpensive, and continuous large-scale industrial production can be achieved.

The invention belongs to the field of traditional Chinese medicines, and particularly relates to a preparation method of Qingjin oral liquid. According to the method, dynamic countercurrent extractionis adopted, wherein parameters of dynamic countercurrent extraction are selected; twelve medicinal materials in the Qingjin syrup are extracted; a single factor and an orthogonal experiment are combined and the bergenin transfer rate is used as an index, multi-index weighting is carried out to determine key factors. The optimal process parameters of the factors such as the medicinal material granularity, the extraction frequency, the material-liquid ratio, the extraction time, the extraction temperature and the like are determined. According to the present invention, the dynamic countercurrent extraction technology is adopted, such that the extraction temperature is low, the solvent consumption is low, the extraction efficiency is high, the energy consumption of the subsequent working section is low, the product quality is improved, and the product technical level can be significantly improved.

The invention discloses a production process of dried orange peel cool tea. The production process includes the steps of: crushing snow pears and placing the snow pears with lalang grass rhizome and dried orange peel into an extraction tank; adding water and heating the extraction tank to boil water in the extraction tank, and maintaining the water boiled for 30-120 min; during extraction, intermittently starting a circulating pump to circulate extract liquid, and after the extraction is finished, filtering the extract liquid for later use; repeatedly extracting the extract liquid for one time; mixing the two extract liquids and adding oligosaccharide, stirring and dissolving the liquid and filtering the liquid to obtain the dried orange peel cool tea. The method is high in extraction rate of effective components during extraction since that: 1) extraction time is prolonged; 2) water for extraction is circulated; and 3) the drug residues are secondarily extracted. In addition, in the process, use amount of Chinese herbal medicines and the snow pears is high and the cool tea is sugar-free and is low in water addition ratio, so that the cool tea has significant lung moistening and cough relieving effects and also has the effects of relaxing bowel and removing toxin.