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Preparation method for extracting salicin from bamboo-willow bark

A technology of salicin and willow, which is applied in the field of chemical engineering, can solve the problems of large consumption of organic solvents, unreachable content, unfavorable environmental protection, etc., and achieves the effect of low cost, low equipment requirements, and strong practicability

Inactive Publication Date: 2016-01-13
JINAN LVBAOLAI ECO AGRI DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process consumes a large amount of organic solvents during the extraction process, which is costly and not conducive to environmental protection, and the content cannot reach more than 98.45%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method for extracting salicin from bamboo willow bark, characterized in that: it is completed by the following steps:

[0022] Step 1. Drying and crushing of raw materials: collect bamboo willow bark older than two years as raw material, dry and pulverize, and use a 20-mesh screen to make bamboo willow bark powder; adopt continuous microwave drying method, drying temperature is 60°C, and make it after drying Get bamboo willow bark powder, the powder particle size is 20 orders;

[0023] Step 2, extraction and solid-liquid separation: take 0.8 tons of bamboo willow bark powder in parts by weight, use ultrasonic countercurrent continuous extraction equipment, extract under the condition of 60 ° C, after extraction, go through horizontal screw centrifugation at a speed of 2500rpm, and then pass through butterfly Formula centrifugation, rotating speed 7000rpm, obtain extraction filtrate A after centrifugation; Adopt solvent to be ion-free water during extractio...

Embodiment 2

[0030] A preparation method for extracting salicin from bamboo willow bark, which is completed by the following steps:

[0031] Step 1. Drying and crushing of raw materials: collecting bamboo willow bark older than two years as raw material, drying and crushing; using a 35-mesh screen to make bamboo willow bark powder; adopting continuous microwave drying method, drying temperature is 75°C, and making Bamboo willow bark powder is obtained, and the powder particle size is 30 orders;

[0032] Step 2. Extraction and solid-liquid separation: Take 1.0 tons of bamboo willow bark powder in parts by weight, use ultrasonic countercurrent continuous extraction equipment, and extract at 75°C. Formula centrifugation, rotating speed 7000rpm, obtain extraction filtrate A after centrifugation; Adopt solvent to be ion-free water during extraction;

[0033] Step 3, initial purification of macroporous resin: the filtrate A is adsorbed by macroporous adsorption resin at a flow rate of 1.8 BV / h,...

Embodiment 3

[0039] A preparation method for extracting salicin from bamboo willow bark, which is completed by the following steps:

[0040] Step 1. Drying and crushing of raw materials: collecting bamboo willow bark older than two years as raw material, drying and crushing; using a 45-mesh screen to make bamboo willow bark powder; adopting continuous microwave drying method, drying temperature 85°C, and making Bamboo willow bark powder is obtained, and the powder particle size is 32 orders;

[0041]Step 2, extraction and solid-liquid separation: Take 1.5 tons of bamboo willow bark powder in parts by weight, use ultrasonic countercurrent continuous extraction equipment, extract under the condition of 75 ° C, after extraction, go through horizontal screw centrifugation at a speed of 2750rpm, and then pass through butterfly Formula centrifugation, rotating speed 7000rpm, obtain extraction filtrate A after centrifugation; Adopt solvent to be ion-free water during extraction;

[0042] Step 3,...

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Abstract

The invention provides a preparation method for extracting salicin from bamboo-willow bark. The method comprises the following steps: Step 1, a raw material is dried and pulverized, wherein the bark of bamboo-willow with age more than 2 years is adopted as a raw material, and is dried and pulverized; the powder is sieved with a mesh with a size of 20-40 meshes, such that bamboo-willow park powder is prepared; the powder is dried with a continuous microwave drying method under a drying temperature of 60-95 DEG C, such that bamboo-willow park powder is obtained, wherein the particle size of the powder is 20-40 meshes. The raw material adopted by the method has the advantages of low solvent consumption and low cost. The extraction separation method is simple to operate, and has low equipment requirement, such that the method is suitable for large-scale popularization. In a product 1, salicin content is stabilized at 80-85%, and a yield is approximately 2.0%.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to an extract prepared from bamboo willow bark or bamboo willow branches, and a preparation method for extracting high-purity salicin from bamboo willow bark or bamboo willow branches. Background technique [0002] Bamboo willow is a plant of the genus Salix in the family Salicaceae. Arbor with great growth potential, up to 20 meters in height. Bark green when young, smooth. The apical dominance is obvious, the axillary buds have strong germination ability, the branches are early, and the angle between the side branches and the main trunk is 30-45°. Crown tower shaped, evenly branched. Leaves lanceolate, single leaves alternate, 15-22cm long, 3.5-6.2cm wide, apex long and acuminate, base cuneate, margins have obvious fine serrations, leaves green on the front, off-white on the back, reddish and short petiole. It has the characteristics of strong adaptability, fast g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/203C07H1/08
Inventor 叶宝兴许洪杰韩拥政
Owner JINAN LVBAOLAI ECO AGRI DEV CO LTD
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