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Method for extracting volatile oil and salidroside from rhodiola whole herb

A technology of salidroside and extraction method, which is applied in the field of extraction of active ingredients of plants, can solve problems such as unsuitable for extraction of low-content raw materials, difficult to realize factory production, unstable purity and extraction rate, etc., and achieve reduction of oily sticky The effect of high content, stable extraction rate and low cost

Active Publication Date: 2015-10-21
SHAANXI SCI TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using water or alcohol solution as a medium, extracting with ultrasonic or microwave, or extracting with supercritical carbon dioxide, and then separating and purifying by column chromatography, although high-purity salidroside can be obtained, the extraction cost of these methods is relatively high. The steps are cumbersome, the process is complicated, the purity and extraction rate are unstable, which directly affects the quality of salidroside, and it is difficult to realize industrial production, and it is not suitable for the extraction of low-content raw materials

Method used

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  • Method for extracting volatile oil and salidroside from rhodiola whole herb

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Dry the whole herb of Rhodiola rosea in the shade, crush it, pass through a 100-mesh sieve, and then follow the steps below to complete the extraction of Rhodiola rosea volatile oil and salidroside:

[0034] 1) Weigh 20kg of Rhodiola rosea whole herb powder and put it into a distillation tank, feed it with steam for 2.1 hours under stirring, and receive the liquid that slips out of the whole process from the condenser tube,

[0035] 2) The effluent was extracted three times with 30°C-60°C model petroleum ether, and the amount of petroleum ether used in each extraction was 1 times the volume of the effluent, and the extracts were combined,

[0036] 3) dry the extract with anhydrous sodium sulfate, then distill and recover sherwood oil to obtain Rhodiola rosea volatile oil 0.085kg,

[0037] 4) After completing step 1), continue to stir the water and solid slag in the retort, when its temperature drops to 70°C, feed the ethanol solution with a concentration of 95%, when th...

Embodiment 2

[0049] Weigh Rhodiola rosea 100 mesh powder 30kg, put it into a distillation tank, and then complete the extraction of Rhodiola rosea volatile oil and salidroside according to the following steps:

[0050] 1) Distillate with steam for 2.2 hours under stirring, and receive the liquid that slips out from the condensing tube during the whole process,

[0051] 2) The effluent was extracted three times with 30°C-60°C model petroleum ether, the amount of petroleum ether used in each extraction was 0.7 times the volume of the effluent, and the extracts were combined,

[0052] 3) dry the extract with anhydrous sodium sulfate, then distill and recover petroleum ether to obtain 0.127kg of rhodiola volatile oil;

[0053] 4) After completing step 1), continue to stir the water and solid slag in the retort, when its temperature drops to 70°C, feed the ethanol solution with a concentration of 95%, when the ethanol concentration in the material system in the retort reaches When the concentr...

Embodiment 3

[0065] Take by weighing 50kg of Rhodiola rosea 100 mesh powder, put it into a retort, and then complete the extraction of Rhodiola rosea volatile oil and salidroside according to the following steps:

[0066] 1) Distillate with water vapor for 2 hours under stirring, and receive the liquid that slips out from the condenser tube during the whole process,

[0067] 2) The effluent was extracted three times with 30°C-60°C model petroleum ether, and the amount of petroleum ether used in each extraction was 0.8 times the volume of the effluent, and the extracts were combined,

[0068] 3) drying the extract with anhydrous sodium sulfate, then distilling and recovering sherwood oil to obtain 0.191kg of rhodiola volatile oil;

[0069] 4) After completing step 1), continue to stir the water and solid slag in the retort, when its temperature drops to 70°C, feed the ethanol solution with a concentration of 95%, when the ethanol concentration in the material system in the retort reaches A...

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Abstract

The invention discloses a method for extracting volatile oil and salidroside from rhodiola whole herb. First, rhodiola whole herb powder is placed in a distilling tank for steam distillation, the rhodiola volatile oil is extracted, then the salidroside is extracted by the following steps that 1. materials in the tank are continuously stirred, a 95% ethanol solution is added, so that the ethanol concentration in a material system reaches 50%-55%, and extracting liquid is obtained by suction filtration and concentrated; 2. concentrated liquid is subjected to HPD-100 macroporous resin chromatography, ethyl alcohol eluant with the concentration of 50% is collected, the eluant is concentrated and dried, and powder is obtained; and 3. the dried powder is made into a silica gel mixture, column chromatography is carried out through a silica gel and neutral alumina mixing chromatographic column, absolute ethyl alcohol eluant is collected, after concentration, absolute ethyl alcohol is used for recrystallization, and salidroside crystals are obtained. Comprehensive extracting of two effective components in the rhodiola whole herb is achieved, the process is simple, cost is low, the extracting rate is stable, and industrialized production can be achieved.

Description

technical field [0001] The invention relates to a method for extracting plant effective components, in particular to a method for extracting volatile oil and salidroside from Rhodiola rosea. Background technique [0002] Rhodiola rosea (Rhodiola rosea L) is a plant of the genus Rhodiola (Crassulaceae) and is a perennial herb with more than 200 varieties. It is a rare wild Chinese medicinal material that mostly grows in alpine and pollution-free mountainous areas. , the common ones mainly include Rhodiola small clusters, Rhodiola parry, Rhodiola narrow leaves, Rhodiola small flowers, Rhodiola long whip, Rhodiola large flowers, Rhodiola alpine, Rhodiola rosea, Rhodiola holy land, etc. More than twenty varieties. "Shen Nong's Materia Medica" records that Rhodiola "mainly nourishes life to respond to the sky, is non-toxic, and will not hurt people if taken for a long time. Top grade, dispelling evil qi, supplementing all deficiencies" is "rare in known tonic medicines". [00...

Claims

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Application Information

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IPC IPC(8): C11B9/00C07H15/18C07H1/08
Inventor 刘存芳田光辉张志军史娟陈亮张强任晓峰赵桦葛红光王平
Owner SHAANXI SCI TECH UNIV
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