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Method for extracting flavonoids from poplar buds

A technology of poplar and flavonoids, which is applied in the field of compound separation and extraction, can solve problems such as low extraction rate, and achieve the effects of high extraction rate and resource saving.

Inactive Publication Date: 2015-11-18
HENAN INST OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But there is a common problem of low extraction rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] For a better description of the present invention, examples are as follows:

[0028] Select Shalan poplar buds: Pick poplar buds from the end of October every year after the poplar leaves fall to the end of March of the following year before the poplar leaves grow. The gum content is about 33%.

[0029] Extraction is achieved through the following steps:

[0030] (1) Water extraction method

[0031] 1. Soak poplar buds and cook: first put poplar buds in a pot, add water to soak the buds, soak for 12 hours (at room temperature), then boil and keep warm for 15-30 minutes;

[0032] 2. Squeeze: Use a colander to fish out the boiled poplar buds, put them in a wax press (or replace them with an oil press) to squeeze, and the glue will be squeezed out, and then use a container to take over;

[0033] 3. Re-pressed dregs: the remaining dregs after pressing, soaked in water for 6-12 hours, repeated heating, and squeezed again;

[0034] 4. Re-soaking tree buds: mix and soak the...

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PUM

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Abstract

The invention discloses a method for extracting flavones from poplar buds, which belongs to the field of compound separation extraction. The method comprises the following steps: taking water or alcohol as an extracting solvent, and performing methods of soaking, stewing, squeezing, separating, grinding and the like on poplar buds to prepare a poplar bud flavone extract. According to the method, the extracting rate is relatively high, the water extraction rate is more than 90%, the alcohol extraction rate is more than 95%, the poplar buds can be fully utilized, and resources are saved.

Description

technical field [0001] The invention relates to a method for extracting flavonoids, in particular to a method for extracting flavonoids from poplar buds, which belongs to the field of compound separation and extraction. Background technique [0002] Poplar is the most important glue source plant for bees to collect propolis. Poplar buds contain a lot of flavonoids, so they have medicinal value, which can diuresis and laxative, relieve heat and poison, and repel insects. It has been reported in the literature that the composition of poplar bud alcohol extract is very close to that of propolis, which has good development and application value. At present, there are four methods for extracting flavonoids from poplar buds: distilled water, acetone, ethyl acetate, and ethanol solution, which are generally considered to be 70% ethanol solution. extract method is a better method. [0003] But there is generally the deficiency that the extraction rate is low. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K36/76A61P7/10A61P1/10A61P29/00A61P39/02A61P33/00
Inventor 张中印吴黎明张玮赵文明刘霞
Owner HENAN INST OF SCI & TECH