240results about How to "Low extraction rate" patented technology

A process for leaching laterite ores containing limonite and saprolite in a two stage process. The first stage consisting of mixing and reacting the ore with concentrated mineral acid, and the second stage consisting of preparing a slurry of the acid / ore mixture in water and leaching the mixture to dissolve nickel and cobalt. Iron is efficiently separated from nickel and cobalt in the solid leach residue primarily as an oxide or hydroxide of ferric iron other than jarosite.

Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.

Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.

The invention discloses a method of using wet phosphoric acid to prepare industrial grade phosphoric acid, food grade phosphoric acid and industrial ammonium diacid phosphate, which is characterized in using wet phosphoric acid as the material, and preparing industrial grade phosphoric acid and food grade phosphoric acid respectively by using a series of compound purifying technologies such as chemical sedimentation and extracting by organic solvent and concentration and recrystallization and other technologies; meanwhile, the invention uses a part of purified diluted phosphoric acid to prepare industrial ammonium diacid phosphate. The invention has the advantages of reasonable cascade utilization of the wet phosphoric acid, high additional value of phosphorus, and further exploitation of the lower industrial and food grades phosphate.

A method for delivering a long coffee extract from a capsule containing ground coffee within a flow time of 50 seconds or less by injection of water under pressure within the capsule. The capsule is filled with ground coffee and has a delivery membrane. The capsule is extracted in a coffee extraction device, and pressurized water is injected in the capsule under pressure. The coffee beverage is released through the beverage delivery membrane of the capsule with engaging means engaging in and / or against the membrane. The pressure loss is reduced in the coffee bed by providing in the capsule coffee ground having a controlled percentage of fines (F) depending on the average particle size (D4,3). The flow time can be lowered to 40 seconds or even less while maintaining a coffee extraction yield within a high range of 15 to 30%.

The invention provides a low alcohol grape wine and the brewing technology thereof, belonging to the technical field of grape wine preparation. The aim of the invention is to provide a brewing technology of high concentration low alcohol (8-10 percent of alcohol degree) grape wine. Under the premise that the grape wine made by the brewing technology meets the technical indicators of high concentration and low alcohol, the brewing technology does not influence the flavor and the characteristics of the grape wine.

Belonging to the field of green tea polyphenol extraction processes, the invention discloses a preparation process for extracting green tea polyphenols from tea. The preparation process includes the following six steps: pretreatment of tea, nitrogen protection, ultrasonic extraction, separation and filtration, resin adsorption, concentration and drying. The process provided by the invention solves the problems of serious destruction of effective components, low product yield and purity, high production cost and pollution in existing green tea polyphenol extraction. The preparation method disclosed in the invention not only has the advantages of high recovery rate, time saving, high extraction rate and the like, but also avoids the use of toxic solvents, and is conducive to reducing energy consumption and lowering the production cost, thus having good industrial promotion value.

The invention discloses a method of adopting simultaneous distillation and extraction technology to extract volatile oil in agilawood leaf.The method includes that two steps of agilawood leaf water solution distillation and solvent extraction are combined into one.Most steps in the method are performed in a simultaneous distillation and extraction device, so that the method is simple, convenient and practical in operation and easy in industrial production.Steam of agilawood leaf volatile oil and dichloromethane steam come across above the simultaneous distillation and extraction device and fully contact, extracting of the agilawood leaf volatile oil from the steam into the dichloromethane steam is facilitated, reducing of solvent consumption is facilitated, damage to and volatilization of active ingredients in the volatile oil are prevented, and value of extract is guaranteed.

The invention discloses a preparation method of a subcritical raisin extract and an application of the subcritical raisin extract in cigarettes. The subcritical raisin extract is characterized by being prepared by the following method: pretreating raw materials and extracting at an extraction pressure of 0.5MPa to 3MPa at the temperature of 0-50 DEG C by taking butane, propane or dimethyl ether as a subcritical extracting solvent, wherein an entrainer used is 55% to 95% ethanol. After being added with the subcritical raisin extract, cigarette shreds are free of peculiar smells in smoke and harmonious in fragrance; due to the subcritical raisin extract, the fragrance quality and the smoke fineness and tenderness of the cigarettes are both improved; the fragrance amount of the cigarettes is increased; impurity gas and irritation of the smoke are reduced; the overall smoking quality of the cigarette is improved. The most prominent characteristics of the subcritical raisin extract prepared by the method disclosed by the invention are that the subcritical raisin extract prepared by the method can be used as a cigarette additive, the application of the additive does not change the original performances and processing technique of the cigarettes, the fragrance quality of the cigarettes is improved and the sensory comfort degree of the cigarettes is increased, so the subcritical raisin extract has better significance and value for actual production.

The invention provides a method for rapidly preparing forsythin from forsythia suspense leaves and aims at solving the problems that forsythin can be easily decomposed, a preparation process is tedious and long time is consumed in the prior art. The method for rapidly preparing the forsythin from the forsythia suspense leaves comprises the following steps: preparing forsythia suspense leaf powder, firstly carrying out reflux extracting for 2-3 times by adopting absolute ethyl alcohol, concentrating filtrate into paste, then dissolving by adopting distilled water and filtering, concentrating obtained filtrate, refrigerating, filtering to obtain precipitate, dissolving the precipitate by adopting an ethyl alcohol solution, adding petroleum ether for extracting, and concentrating, drying and recrystallizing a solution at the lower layer for 2-4 times, thus the forsythin is obtained. Purity of the obtained forsythin is more than 98% when being detected by virtue of HPLC (high performance liquid chromatography). By adopting the method for rapidly preparing the forsythin from the forsythia suspense leaves, impurities can be greatly reduced, and great convenience is provided for subsequent purification operation; the petroleum ether is adopted for extracting, so that interference of chlorophyll is eliminated, and the purify of the forsythin is greatly increased; no column chromatography is used during separation, so that consumed time is greatly shortened, and manpower and time are saved for production.

The invention provides yacon fruit juice and a preparation method thereof. The yacon fruit juice contains fructooligosaccharide and chlorogenic acid, wherein the content of the fructooligosaccharide is not less than 11,000mg / 100g, and the content of the chlorogenic acid is not less than 19mg / 100g. The preparation method for producing the yacon fruit juice comprises that yacon tubers are prepared into a yacon fruit juice product by cleaning, peeling, crushing, color protection, juicing, enzyme treatment, adsorption, filtration, centrifugation, blending, high-temperature sterilization and filling. The yacon fruit juice keeps the nutrient components of the fructooligosaccharide and the chlorogenic acid, ensures that the contents of the fructooligosaccharide and the chlorogenic acid do not decline along with prolonging of storage time, and also keeps the unique flavor of yacon fruits. The guarantee period of the product is 1 year, and the yacon fruit juice has no sediment or suspension and does not change color in the guarantee period.

The invention provides a method for accurate extraction of sweet potato starch. The method comprises the following steps: (1) crushing sweet potatoes directly without washing to obtain a sweet potato pulp; (2) diluting the sweet potato pulp with water at a weight ratio of the sweet potato pulp to the water of 1:(3-5), and then filtering to obtain filtrate; (3) adding a mixed solution containing abrasive powder of gypsum, a sweet potato leaf extract and soybean oil into the filtrate with the added amount of 0.1% of the weight of the filtrate, then stirring uniformly, wherein during the preparation of the mixed solution, the weight ratio of the abrasive powder of gypsum to the sweet potato leaf extract to the soybean oil is 10:1:1, the abrasive powder of gypsum is put dissolved in water at first to obtain saturated gypsum water, and then the sweet potato leaf extract and the soybean oil are added and are stirred uniformly to obtain the mixed solution; (4) after stirring uniformly, standing for deposition to ensure that the mud, the sweet potato starch and the water in the filtrate are separated into an upper layer, a middle layer and a lower layer; (5) evacuating the water at the upper layer, and taking out the sweet potato starch; (6) performing sun-drying or oven-drying on the sweet potato starch, and bagging.

The invention discloses a preparation method, a quality control method and an application of composition of active ingredients ob bitter herb. The composition of the active ingredients of the bitter herb disclosed by the invention mainly comprises cichoric acid and luteolin-7-O-beta-D-glucuronide, and content of the cichoric acid and the luteolin-7-O-beta-D-glucuronide is not less than 80%. An extraction method of the composition comprises that pretreatment is carried out by adopting an enzymatic method, then a supercritical fluid extraction method is adopted, and the obtained extract is respectively subjected to separating, purifying, concentrating and drying by virtue of an AB-8 resin column and a polyamide resin column so as to obtain the composition. Besides, the invention also relates to an application of the composition in preparation of modern bitter herb injection and treatment on coronary heart disease, angor pectoris, myocardial infarction and cerebral infarction and an application of the composition in content determination of the composition of the active ingredients of the bitter herb and quality control of bitter herb medicinal material.