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Method for extracting, separating and refining salicin from willow

A technology of salicin and willow tree, applied in the field of extraction, separation and purification of salicin, can solve the problems of increasing technical control points, unmentioned product yield, cumbersome production process, etc., to reduce pollution, slow down membrane pollution, and reduce cost. Effect

Active Publication Date: 2020-09-11
甘肃天顺植物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This production process is too cumbersome, ultrafiltration, adsorption, technical control points increase, and the product yield is not mentioned in the invention, the production cost is very high

Method used

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  • Method for extracting, separating and refining salicin from willow
  • Method for extracting, separating and refining salicin from willow

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] This specific embodiment adopts following technical scheme: its operating steps are as follows:

[0025] 1. Use white willow bark or fresh willow branches as raw materials, crush them into 20 mesh small granules for later use;

[0026] 2. Put in 8% quicklime by weight of the raw material, stir well and evenly, use a rapid instrument to detect the moisture content of the raw material, and spray an appropriate amount of water to ensure that ...

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Abstract

The invention discloses a method for extracting, separating and refining salicin from willow, and relates to the technical field of extraction and separation. The method comprises the following stepsof adding quick lime accounting for 8% of the weight of raw materials, sufficiently and uniformly stirring the quick lime, detecting the water content of the raw materials by using a rapid instrument,and spraying a proper amount of water; adding an ethanol solution with the concentration of 75% and the amount 7 times that of the raw materials, performing reflux extraction for 2 hours, and recovering an extracting solution; recovering ethanol from the extracting solution under reduced pressure until no alcohol exists, and performing standing to the room temperature to obtain a salicin aqueoussolution; carrying out dynamic cross-flow filtration on the aqueous solution by using a rotary ceramic membrane with the aperture of 2 nanometers, and collecting a filtrate; feeding the filtrate intoa refrigerating chamber for crystallization; and performing separation by using a centrifugal machine, collecting crystals, and performing drying to obtain salicin coarse crystals. According to the method, the alcohol consumption can be reduced, the time is saved, the production cost is reduced, and the salicin content of a prepared product can reach 99.5% or above.

Description

technical field [0001] The invention relates to the technical field of extraction and separation, in particular to a method for extracting, separating and refining salicin from willow. Background technique [0002] Salicin, also known as salicin, can be extracted from willow bark or branches, or obtained by condensation of salicyl alcohol and glucose. Usually the content of salicin in willow bark or willow branches is between 1.0 and 4..0%. The main uses are anti-inflammatory, analgesic and fever-reducing. Salicin and aspirin (acetylsalicylic acid) have similar biological activities, and are not irritating to the stomach, and are less likely to cause gastric bleeding. A new study found that it is an oxidase (NADH oxidase) inhibitor, has anti-wrinkle, increases skin gloss and elasticity, reduces pigmentation, increases skin moisture, etc., WO2009120214-A1), has been used in medicines, cosmetics, etc. . [0003] At present, there are many methods for extracting salicin from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H1/08C07H15/203
CPCC07H1/08C07H15/203
Inventor 杨军刘慧汪延孙文波郭佳丽
Owner 甘肃天顺植物科技有限公司
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