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Process for extracting and separating salicin from fresh hranch of red willow

A technology of salicin and willow fresh, which is applied in the field of extraction and separation of compounds, and achieves the effects of high yield, simple process and low cost

Inactive Publication Date: 2004-12-15
SANJIANG BIOLOGICA ENG XI AN CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to studies, various plants contain salicin, but how to find a plant with a high content, and can be extracted and separated to obtain pure salicin by a simple production process has not been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] 1. Crush the harvested red-skinned willow branches into a powder of about 10 meshes, mix with 5% quicklime by weight, mix well, and place it for 30 minutes

[0010] 2. The mixed raw materials were extracted for the first time with 85% ethanol under reflux for 1 hour, and for the second and third times with 80% ethanol for reflux extraction. The extracts were combined and concentrated under reduced pressure to form a thin extract with a specific gravity of 1.10.

[0011] 3. Dilute the dilute extract with 3 times of water, let it stand for 30 minutes, filter, and put the filtrate into D101 macroporous adsorption resin

[0012] 4. Collect the effluent and washing liquid, and concentrate under reduced pressure to a specific gravity of 1.02, and there will be needle crystals after standing.

[0013] 5. Suction filter the crystals to obtain crude crystals, then use 10 times the amount of 90% ethanol, and then add 10% activated carbon to decolorize under reflux, filter while h...

Embodiment 2

[0015] 1. Crush the harvested red-skinned willow branches into a powder of about 15 meshes, mix with 8% quicklime by weight, mix well, and place it for 30 minutes

[0016] 2. The mixed raw materials were extracted for the first time with 83% ethanol under reflux for 1 hour, and for the second and third times with 78% ethanol for reflux extraction. The extracts were combined and concentrated under reduced pressure to form a thin extract with a specific gravity of 1.12.

[0017] 3. Dilute the dilute extract with 3.5 times of water, let it stand for 30 minutes, filter, and put the filtrate into D101 macroporous adsorption resin

[0018] 4. Collect the effluent and washing liquid, and concentrate under reduced pressure until the specific gravity is 1.03, and there will be needle crystals after standing.

[0019] 5. Suction filter the crystals to obtain crude crystals, then use 8 times the amount of 92% ethanol, then add 8% activated carbon to decolorize under reflux, filter while ...

Embodiment 3

[0021] 1. Grind the harvested red-skinned willow branches into a powder of about 20 meshes, mix with 10% quicklime by weight, mix well, and place it for 30 minutes

[0022] 2. The mixed raw materials were extracted for the first time with 80% ethanol under reflux for 1 hour, and for the second and third times with 75% ethanol for reflux extraction. The extracts were combined and concentrated under reduced pressure to form a dilute extract with a specific gravity of 1.15.

[0023] 3. Dilute the dilute extract with 4 times of water, let it stand for 30 minutes, filter, and put the filtrate into D101 macroporous adsorption resin

[0024] 4. Collect the effluent and washing liquid, and concentrate under reduced pressure to a specific gravity of 1.05, and there will be needle crystals after standing.

[0025] 5. Suction filter the crystals to obtain crude crystals, then use 12 times the amount of 95% ethanol, and then add 12% activated carbon to decolorize under reflux, filter whil...

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PUM

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Abstract

The process of extracting and separating salicin from fresh branch of red willow material includes crushing the material, mixing with lime via stirring, letting stand for 30 min, thrice ethanol extraction, recovering ethanol to obtain dilute extractum, diluting with water and filtering to obtain filtrate, elution in macroporous resin, merging effluent and water washing liquid, concentration to crystallize, re-crystallize, suction filtering and vacuum drying. The present invention has simple technological process, low cost, high yield and less 'three waste', and is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for extracting and isolating compounds from plants, in particular to a method for extracting and isolating salicin from red willow fresh branches. Background technique [0002] With the increasing use of natural products, more and more natural products are valued by research institutions at home and abroad. Salicin has unique advantages in beauty, it can promote skin metabolism, improve skin texture, skin tone and smoothness. In addition, salicin-rich plant extracts work together with other extracts to lose weight. There are many studies on the pharmacology of salicin, but there are few reports on the extraction and separation, and there have been few reports in the past 20 years. According to studies, various plants contain salicin, but how to find a plant with high content, and can be extracted and separated to obtain pure salicin by simple production process has not been reported. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H1/08C07H15/203
Inventor 薛迎春陈冲
Owner SANJIANG BIOLOGICA ENG XI AN CITY
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