Method for extracting pinostrobin and beta-sitosterin from hickory nut epicarp

A technology of coneconol and exocarp, which is applied in the field of extracting coneconin and β-sitosterol from the pecan exocarp, can solve problems such as product purity, process method and production cost, environmental pollution, etc., and achieve equipment The effect of less investment, high product purity, and increased added value

Inactive Publication Date: 2009-07-08
贵州绿黔能源科技有限公司
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Problems solved by technology

[0009] The existing domestic reports on the separation and purification of coniferin and β-sitosterol are limited to the systematic chemical composition research on plant raw materials, and the basic research reports on the isolation and

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  • Method for extracting pinostrobin and beta-sitosterin from hickory nut epicarp
  • Method for extracting pinostrobin and beta-sitosterin from hickory nut epicarp

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Embodiment Construction

[0035] The present invention will now be further described with reference to specific embodiments.

[0036] A method for extracting pinocyanin and β-sitosterol from pecan exocarp, comprising the following steps:

[0037] 1) Raw material treatment: After washing the pecan rind and drying it naturally, it is first dried in a 40°C oven for 24 hours, then taken out and pulverized into coarse powder, and passed through a 20-40 mesh sieve;

[0038] 2) Extraction: the raw material treated in step 1) was swollen with 95% ethanol for 4 hours and then loaded into a percolation cylinder, and 95% ethanol was used as a solvent for percolation extraction, and the flow rate was controlled to be 8 mL / min, and 15 times the amount of percolation was collected. liquid;

[0039] 3) Concentration under reduced pressure: the percolating liquid is concentrated in a vacuum film below 50 ° C until there is no alcohol smell, and ethanol is recovered to obtain a concentrated liquid;

[0040] 4) Organi...

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Abstract

The invention provides a method for extracting pinostrobin and beta-sitosterol from exocarp of kiskatom, which belongs to the technical field of pinostrobin and beta-sitosterol extracting methods. The method comprises the following steps: washing and crushing the expocarp of the kiskatom; and then diacolating and extracting the expocarp after the expocarp is swelled by ethanol, and concentrating the collected diacolation solution to prepare a concentrated solution; extracting the concentrated solution by an organic solvent to prepare extract dry powder; and separating the extract dry powder by silica gel column chromatography with the following steps: a) carrying out gradient elution on the extract dry powder by sherwood oil and a sherwood oil-ethyl acetate mixed solution with volume ratio of between 45:1 and 15:1 respectively, and combining two kinds of eluate; and b) carrying out the gradient elution on the combined eluate by the sherwood oil-ethyl acetate mixed solution with volume ratio of between 10:1 and 1:20, and concentrating and crystallizing the combined eluate in the reduced pressure to prepare pinostrobin coarse crystal and beta-sitosterol coarse crystal; and carrying out recrystallization treatment to prepare pinostrobin crystal and beta-sitosterol crystal. The method has the advantages of simple process and low manufacturing cost, and the contents of the prepared pinostrobin crystal and the beta-sitosterol crystal are more than 98 percent.

Description

technical field [0001] The invention belongs to the technical field of methods for extracting pinuncinol and beta-sitosterol, in particular to a method for extracting pinocytin and beta-sitosterol from pecan exocarp. Background technique [0002] Pecan Juglans mandshurica Maxim, is Juglandaceae, Pecan genus Carya plant, mainly produced in Zhejiang Lin'an, Chun'an and Anji and other places. When pecans are immature, there is a thick green exocarp on the outside of the stone. As the pecans mature and are picked and peeled, the color of the exocarp will gradually turn reddish brown. The peeled pecan exocarp has a very large amount, and the weight ratio of the fruit to the exocarp is almost 1:1, so it will cause great waste after discarding. According to literature reports, pecan leaves, bark and exocarp can be used as medicine. Pecan bark is bitter, acrid, and cold in nature, and can clear heat, dry dampness, clear intestines, and kill insects. In recent years, it has been u...

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Application Information

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IPC IPC(8): C07C49/755C07J9/00C07C45/78C07C45/80C07C45/81B01D15/34
Inventor 袁珂刘元慧张智俊
Owner 贵州绿黔能源科技有限公司
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