Method for preparing Polygonum capilalum extract and Polygonum capilalum extract

A technology of Polygonum cephalosporin and extract, applied in the field of preparing Polygonum cephalosporin extract and Polygonum cephalosporin extract, to achieve the effect of prolonging the incubation time

Active Publication Date: 2012-07-04
GUIZHOU WARMEN PHARMA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Relevant pharmacological studies are rare, and there are only a few reports by Ren Guangyou et al.

Method used

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  • Method for preparing Polygonum capilalum extract and Polygonum capilalum extract

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0054] Preparation Example 1: Water Extract of Polygonum cephalum

[0055] Take 10Kg of the dry aboveground part of Polygonum cephalum, wash it with water, add 10 times the amount of water (W / W), soak for 1 hour, heat and boil for 1 hour, filter, add 6 times the amount of water to the filter residue, boil for 1 hour, filter, and combine The filtrate, when the filtrate was concentrated to 20°C, the relative density reached 1.3, and the concentrated solution was spray-dried to obtain 1.03Kg of dry fine powder.

preparation example 2

[0056] Preparation example 2: preparation of the extract of the present invention

[0057] Get 0.5Kg of dry fine powder (about 100 orders) obtained by the method of Preparation Example 1, and use 8 times (W / W) 82% ethanol to divide and extract ultrasonically twice, each time for 0.5 hours, filter, combine the filtrates, reclaim ethanol, and the residue is reduced Press and dry to obtain dry matter 0.047Kg, and this extract is used as the reagent in the part of the test in the following test examples.

preparation example 2a

[0058] Preparation example 2a: preparation of the extract of the present invention

[0059] In addition, with reference to the method of Preparation Example 2 above, extract with 6 times (W / W) 82% ethanol, 10 times (W / W) 82% ethanol respectively and ultrasonic treatment 2 times for 5 hours each time, the yield of the extract is the same as Preparation example 2 is basically identical; Gained extract is carried out following test example part test equally again, the result shows and the biological activity of extraction gained with 8 times (W / W) 82% ethanol extraction of preparation example 2 is basically identical (difference less than 10%), showing that under the condition of the same concentration of extract, extraction conditions such as the amount of extract and alcohol treatment time have no effect on the activity of the extract.

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Abstract

The invention relates to a method for preparing a Polygonum capilalum extract and a Polygonum capilalum extract. The method for preparing Polygonum capilalum extract substantially comprises the following steps: (1), boiling fresh or dried aerial parts of Polygonum capitatum in water, filtering, and concentrating and drying the filtrate; and (2), extracting the dried product obtained in the step (1) with 76% to 84% ethanol, filtering, and concentrating and drying the filtrate, to obtain the Polygonum capitatum extract. The Polygonum capitatum extract can be used for preparing medicaments with effect of removing heat and dampness, medicaments for relieving stranguria by inducing diuresis, medicaments for treating infection or calculus of the urinary system, medicaments for treating pyelonephritis, medicaments with effects of removing toxic substances and removing blood stasis, medicaments with antibacterial, anti-inflammatory and analgesic effects and medicaments for treating prostatitis.

Description

technical field [0001] The invention belongs to the field of medicinal plant extracts, and in particular relates to a method for preparing Polygonum cephalum extract and the Polygonum cephalum extract. In particular, the extract is obtained by the following steps: taking the fresh part of Polygonum cephalum or Dry product, decoct with water for 2-4 hours, filter, concentrate the filtrate to a relative density of 1.1-1.3 at 20°C, spray the concentrated solution or dry it under reduced pressure to become a dry product; the dried product is crushed into a 100-mesh fine powder, fine powder Then extract with 80-83% ethanol with 8 times the mass for 1 hour, filter, and dry the filtrate to obtain the final product. Background technique [0002] It is known that Polygonum capitatum Buch-Ham ex D.Don is a perennial herbaceous plant belonging to the genus Polygonum. It has the effects of clearing heat and dampness, diuresis and treating stranguria, and has a significant effect in cli...

Claims

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Application Information

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IPC IPC(8): A61K36/704A61P7/10A61P13/00A61P13/04A61P13/12A61P31/04A61P29/00A61P13/08
Inventor 梁斌万金志刘培庆张丽艳李孟林陈欣霞谢宇唐靖雯
Owner GUIZHOU WARMEN PHARMA
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