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Method for extracting aucubin from eucommia bark

A technology of aucubin and bark of Eucommia, applied in the field of extracting aucubin from bark of Eucommia, can solve the problems of changing fragrance profile, loss of top fragrance, solvent pollution, etc., avoiding the loss of active ingredients, improving quality and production rate effect

Inactive Publication Date: 2020-05-22
南京艾蒙利特生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water distillation and solvent extraction will inevitably cause changes in components, thereby changing the entire fragrance profile, and often lose top notes, the product loses its freshness, and pollution from solvent residues is inevitable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for extracting aucubin from ulmoides bark, comprising the following steps:

[0019] (1) Coarsely crush the fresh Eucommia bark and soak in water for 25 minutes, then put it into a sieve basket and immerse it in liquid nitrogen for 50 minutes, then lift it up and place it at room temperature for 8 minutes, and then immerse the sieve basket in liquid nitrogen as a whole 50min, so repeated 3 times;

[0020] (2) Drying the bark of Eucommia in step (1) at low temperature, pulverizing, and passing through a 20-mesh sieve to obtain bark of Eucommia powder;

[0021] The low-temperature vacuum drying process is as follows: the bark of Eucommia is stacked in a vacuum drying oven, the vacuum degree is controlled to 0.009Mpa, the temperature of vacuum drying is 40°C, and the bark of Eucommia is dried until the water content is below 5%;

[0022] (3) Mix Eucommia bark powder with 0.05 times the weight of β-glucosidase and let it stand for 50 minutes, then mix it with aceto...

Embodiment 2

[0025] A method for extracting aucubin from ulmoides bark, comprising the following steps:

[0026] (1) Coarsely crush the fresh Eucommia bark and soak in water for 20 minutes, then put it into a sieve basket and immerse it in liquid nitrogen for 30 minutes, then lift it up and place it at room temperature for 5 minutes, and then immerse the sieve basket in liquid nitrogen as a whole 30min, so repeated 2 times;

[0027] (2) drying the bark of Eucommia in step (1) at low temperature, pulverizing, and passing through a 5-mesh sieve to obtain bark of Eucommia powder;

[0028] The low-temperature vacuum drying process is as follows: the bark of Eucommia is stacked in a vacuum drying oven, the vacuum degree is controlled to 0.009Mpa, the temperature of vacuum drying is 40°C, and the bark of Eucommia is dried until the water content is below 5%;

[0029] (3) Mix Eucommia bark powder with 0.01 times the weight of pectinase and let it stand for 30 minutes, then mix it with ethanol an...

Embodiment 3

[0032] A method for extracting aucubin from ulmoides bark, comprising the following steps:

[0033] (1) Coarsely crush the fresh bark of Eucommia ulmoides and soak in water for 30 minutes, then put it into a sieve basket and immerse it in liquid nitrogen for 60 minutes, then lift it up and place it at room temperature for 10 minutes, and then immerse the sieve basket in liquid nitrogen as a whole 60min, so repeated 3 times;

[0034] (2) Drying the bark of Eucommia in step (1) at low temperature, pulverizing, and passing through a 30-mesh sieve to obtain bark of Eucommia powder;

[0035] The low-temperature vacuum drying process is as follows: the bark of Eucommia is stacked in a vacuum drying oven, the vacuum degree is controlled to 0.009Mpa, the temperature of vacuum drying is 40°C, and the bark of Eucommia is dried until the water content is below 5%;

[0036] (3) Mix Eucommia ulmoides bark powder with 0.08 times the weight of cellulase and let it stand for 60 minutes, then...

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Abstract

The invention discloses a method for extracting aucubin from eucommia bark, and belongs to the technical field of aucubin extraction. The method includes the following steps: (1) performing coarse crushing on the fresh eucommia bark, putting the crushed eucommia bark into a sieve basket, immersing the whole basket into liquid nitrogen, and performing repeating for 2 to 3 times in the way; (2) drying the eucommia bark in the step (1) at low temperature, and performing crushing to obtain eucommia bark powder; (3) performing extraction on the eucommia bark powder by using a supercritical CO2 extraction process; and (4) allowing CO2 containing the extract to flow out from an extraction kettle to enter a separation kettle for decompression separation to obtain the eucommia bark aucubin. The method for extracting the aucubin from the eucommia bark provided by the invention avoids considering the loss of the aucubin during the extraction process of the eucommia bark, and improves the qualityand yield of the aucubin extracted from the eucommia bark.

Description

technical field [0001] The invention relates to a method for extracting aucubin in natural plants, in particular to a method for extracting aucubin from eucommia bark. Background technique [0002] Eucommia, also known as Bakelite, is a plant of Eucommiaceae. Eucommia contains very few free amino acids, but it contains a small amount of protein, which is a complete protein similar to most foods, and can be hydrolyzed to detect 8 kinds of amino acids necessary for the human body. Eucommia contains zinc, copper, iron and other trace elements And 15 kinds of mineral elements such as calcium, phosphorus, potassium, magnesium and other macro elements. Medicinal eucommia is the dry bark of Eucommia ulmoides, a rare tonic medicinal material in China. It is sweet in taste and warm in nature. It has the effects of nourishing liver and kidney, strengthening tendons and bones, regulating Chong Ren, consolidating meridian and preventing miscarriage. It can treat lumbago and leg pain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H1/08C07H17/04
CPCC07H1/08C07H17/04Y02P20/54
Inventor 叶桂银
Owner 南京艾蒙利特生物科技有限公司
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