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85 results about "Salicin" patented technology

Salicin is an alcoholic β-glucoside. Salicin is produced in (and named after) willow (Salix) bark and acts as an anti-inflammatory agent in the human body. Salicin is also commonly found in the bark of Populus species, and the leaves of willows and poplars. It is also found in castoreum, which was used as an analgesic, anti-inflammatory, and antipyretic. The activity of castoreum has been credited to the accumulation of salicin from willow trees in the beaver's diet, which is transformed to salicylic acid and has an action very similar to that of aspirin. Salicin was the historical origin of aspirin and is chemically related to it. When consumed, the acetalic ether bridge is broken down. The two parts of the molecule, glucose and salicyl alcohol, then are metabolized separately. By oxidizing the alcohol function the aromatic part finally is metabolized to salicylic acid. Salicin tastes bitter like quinine.

Extract of willow barks or willow branches and method for preparing salicin

The invention belongs to the technical field of chemical engineering and particularly relates to an extract prepared by using willow barks or willow branches as raw materials, and a method for preparing high-purity salicin, aiming at providing a method for extracting high-content salicin from the willow barks or the willow branches. The method comprises the following steps of: (A) taking the willow barks or the willow branches as the raw materials and carrying out extraction by using an aqueous or alcoholic solution, (B) filtering an extracted solution, (C) carrying out resin adsorption separation on a filtrate, (D) decolorizing, and (E) crystallizing and is characterized in that: an ultrafiltration manner is adopted to filter when the filtration is carried out in the step (B), the extracted solution is firstly filtered by using a 100-500 kD ultrafiltration membrane and then is filtered by using a 5-10 kD ultrafiltration membrane, and the average membrane fluxes are respectively controlled at 100-190 LMH and 20-24 LMH. According to the method provided by the invention, the steps of extraction and ultrafiltration are adopted in coordination with the processes of adsorption, decolorization, crystallization and the like, the content of the obtained salicin can reach 99.0%, the yield is high, the cost is low, and the water and a small amount of alcohol which are used in production can be recycled, so that the cost is lowered, the pollution to the environment caused by organic solvents is reduced, and the implementation of industrialization is facilitated.
Owner:CHENGDU WAGOTT PHARMA

Method for preparing medicinal raw material salicin from white willow branch bark

The invention discloses a method for preparing a medicinal raw material salicin from white willow branch bark. The method comprises the following steps of: grinding the white willow branch bark; adding 20 to 30 weight percent of quicklime; mixing uniformly; conveying the mixture into an extracting tank; performing reflux extraction for three times by using methanol, wherein each time lasts for 1.5 hours; concentrating the extracting solution under reduced pressure until no alcohol exists; adding water in an amount which is 3 to 6 times that of concentrated solution into the concentrated solution; adjusting the pH value to be 9 to 13; standing for 24 hours; concentrating supernatant liquor under reduced pressure until the specific gravity D is equal to 1.10 to 1.13; adding 95 percent methanol in an amount which is 5 times that of concentrated solution into the concentrated solution; standing for 24 hours; performing alcohol precipitation; concentrating supernatant liquor under reduced pressure until the specific gravity D is equal to 1.10 to 1.13; and drying the concentrated solution by spraying powder to obtain the salicin with the content of 25 percent. In the method, the step of performing alcohol precipitation is added; the salicin with the content of 25 percent is directly separated; and the extraction ratio is increased from 4.3 percent to 9 percent. The method is simple in process and suitable for different scales of production, and the cost is obviously reduced.
Owner:汉中秦赢生物科技有限责任公司 +1

Process for extracting salicin from populus euphratica fallen leaves

The invention discloses a process for extracting salicin from populus euphratica fallen leaves. The process is characterized by comprising the following steps: adding calcium oxide into populus euphratica fallen leaf shreds, and adding water for decomposing; extracting the solution twice at the temperature of 30 DEG C, collecting filtrate, and combining the filtrate; adjusting the pH value to 10.0-12.5, allowing the solution to stand, and collecting the filtrate; concentrating the filtrate, adding a clarifying agent or an adsorbent for decolorizing while stirring at the temperature of 70 DEG C, and colleting the filtrate; adjusting the pH value to 3.0-5.0 at a normal temperature, allowing the solution to stand, and collecting the filtrate; adding ammonium water or ammonia gas into the filtrate for adjusting the pH value to 7.0-9.0, concentrating the filtrate till the specific weight is 1.2, and crystalizing the filtrate at the normal temperature in a static manner for 72 hours; and separating a crystal, drying the separated crystal at 80 DEG C, and smashing the dried crystal. The process has the beneficial effects that water with low environmental pollution is taken as an extraction solvent, so that the production cost and the workshop requirement are lowered; ash is removed by adopting sulfuric acid or sulfate, and the crystal is obtained through the crystallizing step, so that the purity of a final product is increased, and can be over 65 percent in general; and natural fallen leaves of populus euphratica in autumn are taken as raw materials, so that damage to vegetation is prevented.
Owner:TUMU SHUKER KUNSHEN PLANT EXTRACTION CO LTD

Extract of willow barks or willow branches and method for preparing salicin

The invention belongs to the technical field of chemical engineering and particularly relates to an extract prepared by using willow barks or willow branches as raw materials, and a method for preparing high-purity salicin, aiming at providing a method for extracting high-content salicin from the willow barks or the willow branches. The method comprises the following steps of: (A) taking the willow barks or the willow branches as the raw materials and carrying out extraction by using an aqueous or alcoholic solution, (B) filtering an extracted solution, (C) carrying out resin adsorption separation on a filtrate, (D) decolorizing, and (E) crystallizing and is characterized in that: an ultrafiltration manner is adopted to filter when the filtration is carried out in the step (B), the extracted solution is firstly filtered by using a 100-500 kD ultrafiltration membrane and then is filtered by using a 5-10 kD ultrafiltration membrane, and the average membrane fluxes are respectively controlled at 100-190 LMH and 20-24 LMH. According to the method provided by the invention, the steps of extraction and ultrafiltration are adopted in coordination with the processes of adsorption, decolorization, crystallization and the like, the content of the obtained salicin can reach 99.0%, the yield is high, the cost is low, and the water and a small amount of alcohol which are used in production can be recycled, so that the cost is lowered, the pollution to the environment caused by organic solvents is reduced, and the implementation of industrialization is facilitated.
Owner:CHENGDU WAGOTT PHARMA

Camellia peel tranquilizing incense and preparation method thereof

The invention relates to the technical field of processing of tranquilizing incenses, and in particular to a camellia peel tranquilizing incense and a preparation method thereof. The tranquilizing incense provided by the invention is prepared from the following raw materials: a camellia peel extract, a lavender extract, a common bombax flower extract, a willow leaf extract, gelatin and glycerol; in the formula, the camellia peel extract can take effects of tranquilizing, sterilizing and promoting sleep when the incense is burned; the lavender extract, the common bombax flower extract and the willow leaf extract can effectively improve fragrance of the tranquilizing incense, so that a more effective function of promoting sleep is achieved; and the willow leaf extract, besides a function of improving sleep on the basis of fragrance, can also take a certain effect of expelling insects by virtue of salicin contained in the willow leaf extract. According to the preparation method, a camellia fruit extract is also extracted by virtue of a supercritical CO2 extraction method, an organic matter solvent extraction method and a gel separation method; and camellia fruits are processed through microwave and ultrasonic pre-treatment, so that effective cell disruption is implemented, and separation efficiency of essential oil, polyphenol and flavone is effectively guaranteed.
Owner:广西那坡县翠株园林业科技有限公司

High-yield extraction method of salicin in branches and leaves of white willows

The invention discloses a high-yield extraction method of salicin in branches and leaves of white willows. The method includes the steps of: crushing, pre-treatment, extraction, concentration, adsorption separation, decoloration, concentration crystallization, etc. In the method, before extraction, the branches and leaves of white willows are treated through ultraviolet irradiation, gas flow pulverization, liquid nitrogen freezing and microwave de-freezing, so that the cell wall structure of the branches and leaves of white willows is effectively damaged while active components in the cells are not damaged, thus remaining the nutrients as most as possible and bringing convenience to dissolution-out of the salicin in subsequent extraction step. In the extraction method, through treatment successively carried out with low-frequency ultrasonic wave, high-frequency ultrasonic wave and medium-frequency ultrasonic wave, cell tissue of the branches and leaves of white willows is further subjected to wall disruption or deformation, so that the active components are extracted more completely and extraction rate of the salicin is greatly increased; and then a filter residue of the branches and leaves of white willows is processed in a high-voltage pulse electric field, so that dissolution-out of the salicin in the filter residue of the branches and leaves of white willows is further promoted, thereby greatly increasing the yield of the salicin.
Owner:安徽龙津生物科技有限公司
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