12results about How to "High extraction yield" patented technology

The invention relates to the technical field of polysaccharide, and provides an extraction method of tremella polysaccharide and application of the tremella polysaccharide to tobacco, the extraction method of the tremella polysaccharide comprises the following steps: S1, freezing and melting tremella, adding a solvent, pulping, and centrifuging to obtain a mixed solution I; s2, alkali liquor is added into the mixed solution I for alkali extraction, acid adjustment and centrifugation, and a mixed solution II is obtained; s3, concentrating, precipitating, filtering and drying the mixed solution II to obtain tremella polysaccharide; the solvent of the precipitation comprises ethanol and 1-propoxy-2-propanol; the volume ratio of the ethanol to the 1-propoxy-2-propanol is (1: 20) to (20: 1). According to the technical scheme, the problems of low yield and purity of tremella polysaccharide extracted in related technologies are solved.

This invention discloses a method for extracting the intermediate ACH, belonging to the field of fine chemicals. The method involves passing a layered acid containing acesulfame potassium (DCM) and a dichloromethane solution into a rotary extraction tower for extraction. The temperature of the layered acid entering the tower is 30-31°C. The extraction pressure and the temperature of the dichloromethane entering the tower are controlled. The extracted dichloromethane layer enters a vibrating extraction tower for back-extraction with deionized water. The back-extracted DCM is neutralized, concentrated, crystallized, and dried to obtain the finished product, potassium acesulfame potassium. Using this method, the ACH content in the extracted acid is reduced to below 0.1%, and the ACH extraction yield reaches over 98%. Because the rotary extraction tower effectively reduces the acid carryover in the DCM, it lowers the back-extraction load, ensuring the product quality of potassium acesulfame potassium. Simultaneously, it simplifies the process conditions, reduces energy consumption, and saves production costs.

The invention discloses an extraction method of high-purity glutamic acid, and belongs to the field of monosodium glutamate production industry. The method comprises the following steps: introducing glutamic acid fermentation liquor into an ultrafiltration membrane to obtain clear liquor and thallus concentrated liquor A; the thallus concentrated solution A enters a dialysis membrane to obtain dialysate and a thallus concentrated solution B; carrying out filter pressing on the thallus concentrated solution B to obtain fungi residues and filtrate; merging the filtrate and the thallus concentrated solution A; the dialysate enters a concentration membrane, a concentrated solution and membrane produced water are obtained, and the membrane produced water is dialysis water; the concentrated solution and the clear solution enter a continuous isoelectric crystallizer to be crystallized, and glutamic acid crystal slurry is discharged at the same time for crystallization; performing primary separation to obtain glutamic acid and isoelectric mother liquor A; the isoelectric mother liquor A is subjected to secondary separation, fine glutamic acid crystals and isoelectric mother liquor B are obtained, and the isoelectric mother liquor B enters a sewage treatment procedure; and fine glutamic acid crystals return to the continuous isoelectric crystallizer. The glutamic acid obtained by the method has the advantages of high yield, high product purity, high light transmittance and good color and luster, and is superior to the commonly used'concentration continuous isoelectric crystallization + crystal transformation 'process.

The invention relates to the technical field of aloe polysaccharide extraction, and provides an extraction method of aloe polysaccharide for cigarettes, which comprises the following steps: S1, crushing and filtering aloe leaves to obtain aloe juice; s2, adding an extracting agent into the aloe juice for extraction, and collecting an extracting solution; s3, an alcohol solvent is added into the extracting solution for precipitation, and aloe polysaccharide is obtained through recrystallization; the extracting agent comprises acetic acid, N, N-diethyl chloroformamide and water; the mass ratio of the acetic acid to the N, N-diethyl chloroformamide to the water is (1-6): 3: 2. According to the technical scheme, the problem that the extraction yield of the aloe polysaccharide is low in the prior art is solved.

The utility model provides a stripping tower for continuous production, which solves the problems of low production efficiency and unstable product quality of the existing stripping tower. Comprising a stripping tower body, the upper half section of the tower body is provided with a feed liquid inlet, and the lower half section of the tower body is provided with a steam inlet; a defoaming plate is arranged above the feed liquid inlet, a defoaming agent inlet and a liquid level sensor are arranged above the defoaming plate, the liquid level sensor is electrically connected with a defoaming agent control system, and the defoaming agent control system controls a defoaming agent to enter the defoaming agent inlet according to liquid level data of the liquid level sensor. The stripping tower is widely applied to the technical field of stripping tower equipment.

The application provides a grape skin active ingredient extraction method and grape skin extract. The grape skin active ingredient extraction method comprises the following steps: obtaining grape skin extract; performing stage-by-stage enzymatic hydrolysis on the grape skin extract, wherein the stage-by-stage enzymatic hydrolysis comprises the following steps: sequentially performing multiple reaction stages in sequence, in each reaction stage, adjusting the pH range corresponding to the reaction stage, and adding the enzyme system and antioxidant protective agent corresponding to the reaction stage; and performing separation and purification on the product after the enzymatic hydrolysis to obtain grape skin active ingredients. The grape skin extract obtained by the method has high extraction yield, good purity, and retains the natural antioxidant activity, and the production process is green and mild, so that the grape skin extract has good industrial application prospect and economic value.

The invention relates to the technical field of oral care treatment, in particular to a preparation method of a gingival protecting composition, and the gingival protecting composition comprises the following raw materials: a saffron crocus extract, ganoderma lucidum spore oil and a ginger extract; the preparation method comprises the steps of obtaining preparation raw materials; respectively extracting to obtain a saffron crocus extract, ganoderma lucidum spore oil and a ginger extract; obtaining the content corresponding to a plurality of characteristic components in each raw material, and determining a key ratio according to the content of each characteristic component; the preparation method comprises the following steps: stirring and mixing the saffron crocus extract, the ganoderma lucidum spore oil and the ginger extract according to a key ratio to obtain a premixed gingiva protecting composition, and standing; determining an emulsion stability characterization value of the gingival protecting composition; and adjusting ultrasonic emulsification stirring parameters based on the emulsification stability characterization value and a preset target stable duration to obtain the emulsified liquid of the homogenized gingival protecting composition. The preparation efficiency of the gingival protecting composition can be improved, and the gingival protecting capability is improved.

The invention provides a method for purifying histidine from Escherichia coli fermentation liquor, which comprises the following steps: taking L-histidine fermentation liquor, adjusting the pH value to 4-5 at 60-70 DEG C, and carrying out microfiltration to remove thalli in the fermentation liquor to obtain L-histidine microfiltrate; adding activated carbon into the L-histidine micro-filtrate for decoloration to obtain an L-histidine decoloration solution; carrying out concentration, crystallization and centrifugal separation on the eluted material liquid to obtain an L-histidine crude product and an L-histidine primary mother solution; redissolving the L-histidine crude product to obtain a histidine heavy solution; adding activated carbon into the histidine heavy solution for decoloration to obtain an L-histidine decoloration solution; concentrating, crystallizing and centrifugally separating the decolored L-histidine solution to obtain an L-histidine refined product and an L-histidine secondary mother solution, and drying the L-histidine refined product to obtain a finished product. The L-histidine is purified from the L-histidine fermentation liquor by adopting an ion exchange chromatographic separation technology, so that the overall extraction yield of the L-histidine is improved, and the production cost of the L-histidine is reduced.

The invention discloses an isomerization extraction method of cis-β-apo-12'-carotenal and its products and applications, and the isomerization extraction method comprises the following steps: 1) uniformly mixing materials containing cis-β-apo-12'-carotenal with acid and solvent, cooling to carry out isomerization reaction until solid is precipitated; 2) heating to continue isomerization reaction to obtain a mixed solution containing more than 80% of all-trans isomers, crystallizing and precipitating the all-trans isomers from the mixed solution, and extracting. The isomerization extraction method of cis-β-apo-12'-carotenal provided by the present invention has simple isomerization extraction operation, high extraction yield, easy-to-obtain raw materials, low cost, and is suitable for large-scale industrial operation.

The present invention proposes a vitamin K2 extraction process, comprising the following steps: (1) adding a filter aid to a vitamin K2 fermentation broth, stirring evenly, and then performing solid-liquid separation to obtain a fungus residue rich in vitamin K2; (2) drying and crushing the fungus residue to obtain fungus powder; (3) loading the fungus powder into a chromatography column, and compacting the fungus powder with clean gas; (4) adding an organic solvent for extraction from a feed port of the chromatography column at a set flow rate, collecting the effluent of the chromatography column, obtaining a vitamin K2 high-concentration extract, and after collecting 0.4-0.6 times the volume of the chromatography column, stopping the addition of the organic solvent, and pressing the liquid in the chromatography column with clean gas; (5) concentrating the vitamin K2 high-concentration extract to obtain a vitamin K2 ointment. Compared with the traditional stirring extraction process, the process of the present invention has the advantages of less use of extraction solvent, high extraction yield, and high content of vitamin K2 ointment, and is very valuable for industrialization.

An artemisinin continuous gradient forward and reverse flow forward and reverse rotation extraction device belongs to the technical field of artemisinin extraction equipment and comprises a forward flow charging tank, a first reverse flow transition extraction tank, a reverse flow extraction tank, a second reverse flow transition extraction tank, a forward flow extraction tank, a third reverse flow transition extraction tank and a reverse flow slag discharge tank which are communicated with one another in a welding manner; stirring shafts are arranged in the downstream charging tank, the countercurrent extraction tank, the downstream extraction tank and the countercurrent deslagging tank; spiral stirring propelling blades and positive and negative rotation driving motors are arranged on the stirring shafts; a material inlet, a slag outlet, a solvent injection pipe and a liquid taking and collecting pipe are arranged; three solvent bridge tubes and an ultrasonic transducer are additionally arranged; the device has the beneficial effects that the components form a four-stage continuous gradient forward and reverse flow forward and reverse rotation and ultrasonic extraction system, so that the artemisinin extraction yield can be effectively improved, the whole extraction period is shortened, and the production efficiency is improved.

The present invention relates to the technical field of natural product extraction, and in particular to a method for extracting pepper essential oil and the pepper essential oil obtained therefrom. The present invention provides a method for extracting pepper essential oil, the method comprising: subjecting a pepper raw material to subcritical extraction to obtain pepper oil, subjecting the pepper oil to molecular distillation, and collecting a light phase. The method can ensure a high extraction yield of pepper essential oil while ensuring that less piperine is extracted and reducing the loss of piperine, thereby significantly increasing the content of piperine in the pepper raw material after essential oil extraction; the extraction method can also effectively remove pesticide residues in the pepper raw material, ensuring low pesticide residues in the pepper raw material after pepper essential oil extraction. In addition, the method is easy to operate and can be industrialized for production.