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Method for obtaining baicalein from scutellaria baicalensis root

A technology of Scutellaria baicalensis root and baicalein, applied in the field of obtaining baicalein from Scutellaria baicalensis root, can solve the problem of low extraction efficiency and achieve the effect of improving extraction efficiency

Inactive Publication Date: 2019-04-02
任肖雄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method for extracting baicalein in the prior art is usually high-pressure crushing and extraction, and the extraction efficiency is low

Method used

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  • Method for obtaining baicalein from scutellaria baicalensis root

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1: Soak the picked Scutellaria baicalensis root in water for 12 hours, and then wash each Scutellaria baicalensis root.

[0031] Step 2: Place the cleaned Scutellaria baicalensis root in an oven for drying.

[0032] Step 3: Peel the dried Scutellaria baicalensis root.

[0033] Step 4: Place the peeled Scutellaria baicalensis root in a blender for stirring, so that the peeled Scutellaria baicalensis root is crushed into a powder with a particle size of 100 μm.

[0034] Step 5: Put the Scutellaria baicalensis powder in a supercritical CO2 extraction kettle, and conduct the first extraction after passing in CO2 with a flow rate of 35L / h in an extraction environment with a desorption temperature of 35°C and a desorption pressure of 8MPa.

[0035] Step 6: After the object extracted for the first time is allowed to stand at room temperature for a period of time, the first upper layer object is taken.

[0036] Step 7: placing the first upper layer object in a supercriti...

Embodiment 2

[0042] Step 1: Soak the picked Scutellaria baicalensis root in water for 24 hours, and then wash each Scutellaria baicalensis root.

[0043] Step 2: Place the cleaned Scutellaria baicalensis root in an oven for drying.

[0044] Step 3: Peel the dried Scutellaria baicalensis root.

[0045] Step 4: Place the peeled Scutellaria baicalensis root in a blender for stirring, so that the peeled Scutellaria baicalensis root is crushed into a powder with a particle size of 60 μm.

[0046] Step 5: Put the Scutellaria baicalensis powder in a supercritical CO2 extraction kettle, and conduct the first extraction after feeding CO2 with a flow rate of 40L / h in an extraction environment with a desorption temperature of 60°C and a desorption pressure of 12MPa.

[0047] Step 6: After the object extracted for the first time is allowed to stand at room temperature for a period of time, the first upper layer object is taken.

[0048] Step 7: placing the first upper layer object in a supercritical...

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Abstract

The invention discloses a method for obtaining baicalein from scutellaria baicalensis root, and the method comprises the following steps: placing cleaned scutellaria baicalensis root in an oven for drying; peeling the dried scutellaria baicalensis root; placing the peeled scutellaria baicalensis root in a stirrer for stirring; placing the scutellaria baicalensis powder in a supercritical CO2 extraction kettle for first extraction, standing the object obtained by the first extraction for a period of time at normal temperature, and taking a first upper layer object; placing the first upper-layerobject in the supercritical CO2 extraction kettle for secondary extraction; standing the object obtained by the secondary extraction for a period of time at the room temperature, and taking a secondupper layer object; carrying out resin adsorption and desorption on the second upper layer object, and drying to obtain a baicalein extract. According to the invention, the extraction efficiency of the baicalein is improved.

Description

technical field [0001] The invention relates to the technical field of traditional Chinese medicines, in particular to a method for obtaining baicalein from roots of scutellaria baicalensis. Background technique [0002] The real name of Scutellaria baicalensis is "Qin", which is Qincao. It has the common name "Scutellaria baicalensis" because of the yellow color of the grass. The original meaning of "Qin" is "hemostatic grass". Used as medicine. There are heat-clearing and damp-drying, cooling blood and preventing miscarriage, detoxification effect. Indications for febrile disease, upper respiratory tract infection, lung-heat cough, damp-heat jaundice, pneumonia, dysentery, hemoptysis, red eyes, restless fetus, high blood pressure, carbuncle, swollen boils and other diseases. Produced in Hebei, Liaoning, Shaanxi, Shandong, Inner Mongolia, Heilongjiang and other places. The root of Scutellaria baicalensis is rich in baicalein, which has the functions of reducing cerebrova...

Claims

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Application Information

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IPC IPC(8): C07D311/30
CPCC07D311/30Y02P20/54
Inventor 任肖雄
Owner 任肖雄
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